Agent Exchange
payment-ready until 2026-10-23
Pay-per-call data gateway for AI agents · 62 x402 endpoints, USDC on Base, no API key or signup, just a wallet.
Call it x402 v2
x402 v2
- Base URL
- https://store.agentexchange.work
- Payment
- x402 v2, header channel
$ curl -i 'https://store.agentexchange.work/brands/check' An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.
Endpoints 20 paid routes on store.agentexchange.work
GET/brands/check Base+Sol $0.09since 07-17
GET/category/ranking Base+Sol $0.02since 07-17
GET/chain/balance Base+Sol $0.003since 07-17
GET/chain/chain-id Base+Sol $0.001since 07-17
GET/chain/ens Base+Sol $0.005since 07-17
GET/chain/estimate-gas Base+Sol $0.09since 07-17
GET/chain/gas Base+Sol $0.02since 07-17
GET/chain/storage Base+Sol $0.09since 07-17
12 more in Example 402 response
Prices as captured in the 402 response: median $0.01 across the 20 endpoints.
Example 402 response
Endpoints and prices
| Method | Path | Description | Price | Network | Asset | 402 channel | Captured |
|---|---|---|---|---|---|---|---|
| GET | / | AI SEO audit API / live brand AI-visibility audit: does ChatGPT, Perplexity, Gemini, Google AI Overviews or Claude recommend this brand when buyers ask for the best in its category, or name competitors instead? One call returns an SEO-style audit for AI search: score 0-100, mention rate, the competitors AI names instead, and per-question evidence. Use for GEO/AEO/LLM-SEO audits, AI search optimization checks, brand monitoring, and website AI-visibility reports. Params: brand + category (+ optional market). | $0.09 | Base+ | USDC | header | since 07-17 |
| GET | / | The inverse of a brand check: ask AI right now who it recommends in ANY category, and get the ranked shortlist of brands it actually names (with mention share). Live from a current model. For competitive-intel, market-research, GEO and sales agents that want the whole AI landscape of a category, not just one brand. Nobody else sells the live category leaderboard. | $0.02 | Base+ | USDC | header | since 07-17 |
| GET | / | The core on-chain RPC read: any address's native coin balance (ETH/POL/xDAI) with live USD value and outgoing transaction count (nonce), across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. The high-frequency balance check wallet-tracking, settlement, and trading agents poll constantly. Free upstream (Blockscout); 6 chains vs onesource's Ethereum-only. | $0.003 | Base+ | USDC | header | since 07-17 |
| GET | / | The EIP-155 chain ID for any supported network via eth_chainId · the read multi-chain agents make to confirm which chain an RPC is on before signing. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free public RPC; 6 chains vs onesource's Ethereum-only coverage. | $0.001 | Base+ | USDC | header | since 07-17 |
| GET | / | Resolve ENS in either direction on Ethereum: an ENS name (vitalik.eth) → its 0x address, or a 0x address → its primary ENS name (plus avatar when set). The identity read wallet, payment, and UX agents make to verify who they're sending to or to show a human-readable name instead of a raw hex address. Free upstream (Blockscout ENS / live registry); one paid call instead of running your own resolver. | $0.005 | Base+ | USDC | header | since 07-17 |
| GET | / | Estimate the gas a transaction will use via eth_estimateGas · the pre-send read every tx-building, trading and settlement agent makes to size gas and avoid out-of-gas reverts. Pass from/to/value/data. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free public RPC; 6 chains vs onesource's Ethereum-only coverage. | $0.09 | Base+ | USDC | header | since 07-17 |
| GET | / | Live network gas prices (slow / average / fast, in gwei) for any chain · the pre-transaction read every trading, sniping, and settlement agent makes before sending a tx to size the fee. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free upstream (Blockscout); one paid call instead of running your own RPC. | $0.02 | Base+ | USDC | header | since 07-17 |
| GET | / | Read any raw contract storage slot via eth_getStorageAt · the low-level read auditing, proxy-resolution and advanced trading agents make to inspect contract state directly. Pass address + slot. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free public RPC; 6 chains vs onesource's Ethereum-only coverage. | $0.09 | Base+ | USDC | header | since 07-17 |
| GET | / | Total supply, holder count, decimals, and live USD price / market cap for any ERC-20/721 token contract, across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. The supply read trading, valuation, and risk agents make to size circulating supply, dilution, and holder distribution before pricing or trading a token. Free upstream (Blockscout); one paid call instead of running your own RPC. | $0.01 | Base+ | USDC | header | since 07-17 |
| GET | / | Look up any transaction by hash: confirmation status (success/failed/pending), block number, confirmations, value, from/to, fee paid, gas used, and the decoded method. The read every settlement, trading, and payment agent polls after sending a tx to confirm it landed. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free upstream (Blockscout); one paid call instead of running your own RPC. | $0.008 | Base+ | USDC | header | since 07-17 |
| GET | / | Decode any transaction by hash into plain English: what happened (swap/transfer/approval/mint/call), the actors, and the full asset changes (every native+token in/out with symbol, amount, direction), plus status, fee and method. For wallet UX, accounting, risk and trading agents. Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis via Blockscout. | $0.09 | Base+ | USDC | header | since 07-17 |
| GET | / | Live decentralized-exchange trading data for ANY token by symbol, name, or contract address: USD price, 24h volume, liquidity, buy/sell transaction counts, and price momentum across 5m/1h/6h/24h, across every chain and DEX. For crypto trading, sniping, research and portfolio agents that poll the market constantly. One paid call instead of integrating Dexscreener. | $0.01 | Base+ | USDC | header | since 07-17 |
| GET | / | The discovery feed sniper and trading agents poll on a loop: newest token launches + most-boosted/promoted tokens across Solana, Base, Ethereum, BSC and more. Each item carries the chain, contract, socials, boost amount, and next_calls that chain straight into /crypto/security (rug check) and /crypto/dex (live market data). Top-of-funnel for the whole trading lane. | $0.09 | Base+ | USDC | header | since 07-17 |
| GET | / | Pre-trade safety check for any token contract: is it a honeypot, buy/sell tax, mintable, owner can reclaim, transfer-pausable, blacklist, open-source, holder count · plus a DANGER/HIGH_RISK/CAUTION/OK verdict and risk flags. The call every trading and sniping agent should make BEFORE buying. Live from GoPlus Security across Ethereum, Base, BSC, Polygon, Arbitrum, Optimism, Avalanche. | $0.09 | Base+ | USDC | header | since 07-17 |
| GET | / | Look up any wallet's token holdings with live USD values: every ERC-20 position with amount, price, USD value and portfolio %, total portfolio value, top-position concentration, and spam/unpriced filtering. The 'bagcheck' call for copy-trading, risk, research and portfolio agents. Across Base, Ethereum, Optimism, Arbitrum, Polygon. Free upstream (Blockscout). | $0.01 | Base+ | USDC | header | since 07-17 |
| GET | / | Current top DeFi yield opportunities filtered by chain and minimum TVL. Returns pool, project, chain, APY (base + reward), TVL, and stablecoin flag, sorted by APY. Sourced live from DefiLlama with attribution. For agents scanning yield opportunities. | $0.01 | Base+ | USDC | header | since 07-17 |
| GET | / | Live macro/economic indicators for ANY of 200+ countries in one call: GDP, GDP growth %, inflation (CPI %), unemployment %, GDP per capita, and population · most-recent values with year. For AI macro, finance, research and trading agents. Official public-domain data from the World Bank (every country, not just the majors). Pass an ISO code (USA, DEU, JPN, CHN, GBR, IND, BRA). | $0.09 | Base+ | USDC | header | since 07-17 |
| GET | / | Live real-money prediction-market odds from Polymarket: top markets by 24h volume with implied probabilities, price moves, dollar volume, and liquidity. Search by keyword (bitcoin, election, fed, world cup, AI). For trading, forecasting, news, and event-resolution agents · one paid call instead of integrating the exchange API yourself. | $0.01 | Base+ | USDC | header | since 07-17 |
| GET | / | One call, many sources: search Hacker News, GitHub, Stack Overflow, and Wikipedia by keyword and get back a unified, ranked result set · titles, URLs, scores/stars, and snippets · across all of them at once. The general research/search read agents make to ground answers, find code, surface discussion, and gather context. No API keys, no per-source accounts, free upstreams. Pass `sources` to narrow (hackernews,github,stackoverflow,wikipedia). | $0.01 | Base+ | USDC | header | since 07-17 |
| GET | / | Keyless fact-grounding: search Wikipedia for any topic and get the matching article titles with extract snippets and canonical URLs · the cheap knowledge read agents make to ground answers and reduce hallucination. Free upstream (Wikimedia API). | $0.01 | Base+ | USDC | header | since 07-17 |
Payment evidence
402 payload captured at . Check evidence JSON · Measurement methodology.
First of 20 payloads captured by the monitor.
150 lines, scroll inside
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/crypto/wallet",
"tags": [
"crypto",
"wallet",
"portfolio",
"holdings",
"bagcheck",
"balance",
"defi",
"trading",
"copy-trade",
"data-feed"
],
"mimeType": "",
"description": "Look up any wallet's token holdings with live USD values: every ERC-20 position with amount, price, USD value and portfolio %, total portfolio value, top-position concentration, and spam/unpriced filtering. The 'bagcheck' call for copy-trading, risk, research and portfolio agents. Across Base, Ethereum, Optimism, Arbitrum, Polygon. Free upstream (Blockscout).",
"serviceName": "Wallet Portfolio / Bagcheck"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "base",
"wallet": "0x..."
}
},
"output": {
"type": "json",
"example": {
"holdings": [
{
"symbol": "ETH",
"usd_value": 99826.71
}
],
"token_count": 23,
"top_position": {
"pct": 54.2,
"symbol": "ETH"
},
"total_usd_value": 184220.45
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"wallet"
],
"properties": {
"chain": {
"type": "string",
"description": "base|ethereum|optimism|arbitrum|polygon (default base)"
},
"wallet": {
"type": "string",
"description": "Wallet address (0x...)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"holdings": {
"type": "array"
},
"total_usd_value": {
"type": "number"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
} Other captured 402 responses (19)
Captured payload 2 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/web/search",
"tags": [
"search",
"web-search",
"research",
"developer",
"github",
"hackernews",
"stackoverflow",
"wikipedia",
"aggregator",
"data-feed"
],
"mimeType": "",
"description": "One call, many sources: search Hacker News, GitHub, Stack Overflow, and Wikipedia by keyword and get back a unified, ranked result set — titles, URLs, scores/stars, and snippets — across all of them at once. The general research/search read agents make to ground answers, find code, surface discussion, and gather context. No API keys, no per-source accounts, free upstreams. Pass `sources` to narrow (hackernews,github,stackoverflow,wikipedia).",
"serviceName": "Multi-source Web & Developer Search"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"q": "vector database",
"limit": 5,
"sources": "hackernews,github,stackoverflow,wikipedia"
}
},
"output": {
"type": "json",
"example": {
"count": 14,
"query": "vector database",
"results": [
{
"url": "https://github.com/owner/repo",
"score": 12000,
"title": "owner/repo",
"source": "github",
"snippet": "..."
}
],
"sources": [
"hackernews",
"github",
"stackoverflow",
"wikipedia"
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"q"
],
"properties": {
"q": {
"type": "string",
"description": "Search query / keywords"
},
"limit": {
"type": "number",
"description": "Results per source, 1-10 (default 5)"
},
"sources": {
"type": "string",
"description": "Comma list to narrow: hackernews,github,stackoverflow,wikipedia (default all)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"count": {
"type": "number"
},
"query": {
"type": "string"
},
"results": {
"type": "array"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 3 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "90000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "90000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/crypto/security",
"tags": [
"crypto",
"defi",
"security",
"rug-check",
"honeypot",
"trading",
"token",
"risk",
"safety",
"data-feed"
],
"mimeType": "",
"description": "Pre-trade safety check for any token contract: is it a honeypot, buy/sell tax, mintable, owner can reclaim, transfer-pausable, blacklist, open-source, holder count — plus a DANGER/HIGH_RISK/CAUTION/OK verdict and risk flags. The call every trading and sniping agent should make BEFORE buying. Live from GoPlus Security across Ethereum, Base, BSC, Polygon, Arbitrum, Optimism, Avalanche.",
"serviceName": "Token Security / Rug Check (GoPlus)"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "ethereum",
"address": "0x..."
}
},
"output": {
"type": "json",
"example": {
"flags": [],
"token": {
"symbol": "PEPE"
},
"buy_tax": 0,
"verdict": "OK",
"sell_tax": 0,
"is_honeypot": false
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"chain": {
"type": "string",
"description": "ethereum|base|bsc|polygon|arbitrum|optimism|avalanche (default ethereum)"
},
"address": {
"type": "string",
"description": "Token contract address (0x...)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"flags": {
"type": "array"
},
"verdict": {
"type": "string"
},
"is_honeypot": {
"type": "boolean"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 4 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "90000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "90000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/brands/check",
"tags": [
"ai-visibility",
"geo",
"aeo",
"brand-monitoring",
"share-of-voice",
"chatgpt",
"perplexity",
"x402"
],
"mimeType": "",
"description": "AI SEO audit API / live brand AI-visibility audit: does ChatGPT, Perplexity, Gemini, Google AI Overviews or Claude recommend this brand when buyers ask for the best in its category, or name competitors instead? One call returns an SEO-style audit for AI search: score 0-100, mention rate, the competitors AI names instead, and per-question evidence. Use for GEO/AEO/LLM-SEO audits, AI search optimization checks, brand monitoring, and website AI-visibility reports. Params: brand + category (+ optional market).",
"serviceName": "Live Brand AI-Visibility Check"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"brand": "Acme Logistics",
"market": "us",
"category": "freight brokers"
}
},
"output": {
"type": "json",
"example": {
"brand": "Acme Logistics",
"score": 20,
"total": 5,
"mentions": 0,
"competitors": [
"BigCo",
"OtherCo"
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"brand",
"category"
],
"properties": {
"brand": {
"type": "string"
},
"market": {
"type": "string"
},
"category": {
"type": "string"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"score": {
"type": "number"
},
"mentions": {
"type": "number"
},
"competitors": {
"type": "array"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 5 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "3000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/chain/balance",
"tags": [
"onchain",
"rpc",
"balance",
"wallet",
"eth",
"crypto",
"trading",
"settlement",
"defi",
"data-feed"
],
"mimeType": "",
"description": "The core on-chain RPC read: any address's native coin balance (ETH/POL/xDAI) with live USD value and outgoing transaction count (nonce), across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. The high-frequency balance check wallet-tracking, settlement, and trading agents poll constantly. Free upstream (Blockscout); 6 chains vs onesource's Ethereum-only.",
"serviceName": "On-chain Native Balance"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "base",
"address": "0x..."
}
},
"output": {
"type": "json",
"example": {
"chain": "base",
"symbol": "ETH",
"address": "0x...",
"balance": 61.6,
"tx_count": 1842,
"usd_value": 99826.71
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"chain": {
"type": "string",
"description": "base|ethereum|optimism|arbitrum|polygon|gnosis (default base)"
},
"address": {
"type": "string",
"description": "Account address (0x...)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"balance": {
"type": "number"
},
"tx_count": {
"type": "number"
},
"usd_value": {
"type": "number"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 6 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/web/wikipedia",
"tags": [
"search",
"wikipedia",
"knowledge",
"facts",
"grounding",
"research",
"encyclopedia",
"data-feed"
],
"mimeType": "",
"description": "Keyless fact-grounding: search Wikipedia for any topic and get the matching article titles with extract snippets and canonical URLs — the cheap knowledge read agents make to ground answers and reduce hallucination. Free upstream (Wikimedia API).",
"serviceName": "Wikipedia Knowledge Lookup"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"q": "Ethereum",
"limit": 3
}
},
"output": {
"type": "json",
"example": {
"count": 3,
"query": "Ethereum",
"results": [
{
"url": "https://en.wikipedia.org/wiki/Ethereum",
"title": "Ethereum",
"snippet": "Ethereum is a decentralized blockchain..."
}
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"q"
],
"properties": {
"q": {
"type": "string",
"description": "Topic / search query"
},
"limit": {
"type": "number",
"description": "Results, 1-10 (default 3)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"count": {
"type": "number"
},
"query": {
"type": "string"
},
"results": {
"type": "array"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 7 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "90000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "90000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/chain/estimate-gas",
"tags": [
"onchain",
"rpc",
"gas",
"estimate-gas",
"transaction",
"trading",
"settlement",
"crypto",
"data-feed"
],
"mimeType": "",
"description": "Estimate the gas a transaction will use via eth_estimateGas — the pre-send read every tx-building, trading and settlement agent makes to size gas and avoid out-of-gas reverts. Pass from/to/value/data. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free public RPC; 6 chains vs onesource's Ethereum-only coverage.",
"serviceName": "Estimate Gas"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"to": "0x...",
"data": "0x",
"from": "0x...",
"chain": "base",
"value": "0x0"
}
},
"output": {
"type": "json",
"example": {
"gas": 21000,
"chain": "base"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"to"
],
"properties": {
"to": {
"type": "string",
"description": "Recipient/contract address (0x...)"
},
"data": {
"type": "string",
"description": "Calldata (0x...)"
},
"from": {
"type": "string",
"description": "Sender address (0x...)"
},
"chain": {
"type": "string",
"description": "base|ethereum|optimism|arbitrum|polygon|gnosis (default base)"
},
"value": {
"type": "string",
"description": "Wei value, hex or decimal (default 0)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"gas": {
"type": "number"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 8 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "20000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/chain/gas",
"tags": [
"onchain",
"rpc",
"gas",
"gas-price",
"gwei",
"trading",
"settlement",
"crypto",
"defi",
"data-feed"
],
"mimeType": "",
"description": "Live network gas prices (slow / average / fast, in gwei) for any chain — the pre-transaction read every trading, sniping, and settlement agent makes before sending a tx to size the fee. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free upstream (Blockscout); one paid call instead of running your own RPC.",
"serviceName": "Live Gas Price"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "ethereum"
}
},
"output": {
"type": "json",
"example": {
"fast": 0.71,
"slow": 0.42,
"unit": "gwei",
"chain": "ethereum",
"average": 0.55
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"chain": {
"type": "string",
"description": "base|ethereum|optimism|arbitrum|polygon|gnosis (default ethereum)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"fast": {
"type": "number"
},
"slow": {
"type": "number"
},
"average": {
"type": "number"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 9 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/markets/prediction",
"tags": [
"prediction-markets",
"polymarket",
"trading",
"forecasting",
"odds",
"betting",
"crypto",
"data-feed"
],
"mimeType": "",
"description": "Live real-money prediction-market odds from Polymarket: top markets by 24h volume with implied probabilities, price moves, dollar volume, and liquidity. Search by keyword (bitcoin, election, fed, world cup, AI). For trading, forecasting, news, and event-resolution agents — one paid call instead of integrating the exchange API yourself.",
"serviceName": "Prediction Market Odds (Polymarket)"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"q": "bitcoin",
"top": 10,
"sort": "volume"
}
},
"output": {
"type": "json",
"example": {
"count": 1,
"source": "polymarket",
"markets": [
{
"end_date": "2026-07-01",
"question": "Will Bitcoin hit $150k by June 30, 2026?",
"volume_24h": 5821652,
"implied_yes": 0.0135
}
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"q": {
"type": "string",
"description": "Keyword filter, e.g. bitcoin, election, fed, world cup"
},
"top": {
"type": "number",
"description": "1-25, default 10"
},
"sort": {
"type": "string",
"description": "volume|liquidity, default volume"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"count": {
"type": "number"
},
"markets": {
"type": "array"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 10 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "90000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "90000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/chain/tx-explain",
"tags": [
"onchain",
"transaction",
"decode",
"explain",
"swap",
"accounting",
"crypto",
"x402"
],
"mimeType": "",
"description": "Decode any transaction by hash into plain English: what happened (swap/transfer/approval/mint/call), the actors, and the full asset changes (every native+token in/out with symbol, amount, direction), plus status, fee and method. For wallet UX, accounting, risk and trading agents. Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis via Blockscout.",
"serviceName": "Transaction Explainer (human-readable decode)"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"hash": "0x...",
"chain": "base"
}
},
"output": {
"type": "json",
"example": {
"hash": "0x...",
"action": "swap",
"method": "swapExactETHForTokens",
"summary": "swapped 1.5 ETH for 4,200 USDC via Uniswap V3",
"asset_changes": [
{
"amount": 1.5,
"symbol": "ETH",
"direction": "out"
},
{
"amount": 4200,
"symbol": "USDC",
"direction": "in"
}
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"hash"
],
"properties": {
"hash": {
"type": "string"
},
"chain": {
"type": "string"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 11 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "8000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "8000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/chain/tx",
"tags": [
"onchain",
"rpc",
"transaction",
"tx",
"receipt",
"settlement",
"trading",
"crypto",
"payment",
"data-feed"
],
"mimeType": "",
"description": "Look up any transaction by hash: confirmation status (success/failed/pending), block number, confirmations, value, from/to, fee paid, gas used, and the decoded method. The read every settlement, trading, and payment agent polls after sending a tx to confirm it landed. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free upstream (Blockscout); one paid call instead of running your own RPC.",
"serviceName": "Transaction Status & Receipt"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"hash": "0x...",
"chain": "base"
}
},
"output": {
"type": "json",
"example": {
"to": "0x...",
"from": "0x...",
"hash": "0x...",
"block": 18234567,
"chain": "base",
"method": "transfer",
"status": "success",
"fee_eth": 0.00012,
"value_eth": 0.05,
"confirmations": 42
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"hash"
],
"properties": {
"hash": {
"type": "string",
"description": "Transaction hash (0x...)"
},
"chain": {
"type": "string",
"description": "base|ethereum|optimism|arbitrum|polygon|gnosis (default base)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"block": {
"type": "number"
},
"status": {
"type": "string"
},
"confirmations": {
"type": "number"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 12 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/chain/chain-id",
"tags": [
"onchain",
"rpc",
"chain-id",
"eip155",
"network",
"multichain",
"crypto",
"settlement",
"data-feed"
],
"mimeType": "",
"description": "The EIP-155 chain ID for any supported network via eth_chainId — the read multi-chain agents make to confirm which chain an RPC is on before signing. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free public RPC; 6 chains vs onesource's Ethereum-only coverage.",
"serviceName": "Chain ID (EIP-155)"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "base"
}
},
"output": {
"type": "json",
"example": {
"chain": "base",
"chain_id": 8453
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"chain": {
"type": "string",
"description": "base|ethereum|optimism|arbitrum|polygon|gnosis (default base)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"chain_id": {
"type": "number"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 13 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/crypto/dex",
"tags": [
"crypto",
"defi",
"dex",
"trading",
"token",
"price",
"liquidity",
"volume",
"market-data",
"memecoin",
"data-feed"
],
"mimeType": "",
"description": "Live decentralized-exchange trading data for ANY token by symbol, name, or contract address: USD price, 24h volume, liquidity, buy/sell transaction counts, and price momentum across 5m/1h/6h/24h, across every chain and DEX. For crypto trading, sniping, research and portfolio agents that poll the market constantly. One paid call instead of integrating Dexscreener.",
"serviceName": "Live DEX Token Data (Dexscreener)"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"q": "WIF"
}
},
"output": {
"type": "json",
"example": {
"pairs": [
{
"pair": "WIF/SOL",
"chain": "solana",
"price_usd": 2.31,
"volume_24h": 18500000,
"price_change": {
"h24": 5.2
},
"liquidity_usd": 9200000
}
],
"query": "WIF"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"q"
],
"properties": {
"q": {
"type": "string",
"description": "Token symbol, name, or contract address (e.g. WIF, PEPE, or 0x...)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"pairs": {
"type": "array"
},
"query": {
"type": "string"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 14 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/defi/yields",
"tags": [
"defi",
"yields",
"apy",
"data-feed",
"crypto",
"tvl"
],
"mimeType": "",
"description": "Current top DeFi yield opportunities filtered by chain and minimum TVL. Returns pool, project, chain, APY (base + reward), TVL, and stablecoin flag, sorted by APY. Sourced live from DefiLlama with attribution. For agents scanning yield opportunities.",
"serviceName": "DeFi Yield Snapshot"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"top": 10,
"chain": "Base",
"min_tvl": 1000000
}
},
"output": {
"type": "json",
"example": {
"count": 10,
"pools": [
{
"apy": 5.2,
"pool": "aave-v3-usdc",
"chain": "Base",
"symbol": "USDC",
"tvlUsd": 12000000,
"project": "aave-v3",
"stablecoin": true
}
],
"source": "DefiLlama"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"top": {
"type": "number",
"description": "Number of pools to return (max 50), default 10"
},
"chain": {
"type": "string",
"description": "Chain name e.g. Ethereum, Base, Arbitrum, Solana. Default Base"
},
"min_tvl": {
"type": "number",
"description": "Minimum pool TVL in USD, default 1000000"
},
"stablecoin_only": {
"type": "boolean",
"description": "Only stablecoin pools, default false"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"count": {
"type": "number"
},
"pools": {
"type": "array"
},
"source": {
"type": "string"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 15 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "20000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/category/ranking",
"tags": [
"ai-visibility",
"geo",
"category-ranking",
"competitive-intelligence",
"market-research",
"brand-monitoring",
"leaderboard",
"answer-engine",
"share-of-voice",
"data-feed"
],
"mimeType": "",
"description": "The inverse of a brand check: ask AI right now who it recommends in ANY category, and get the ranked shortlist of brands it actually names (with mention share). Live from a current model. For competitive-intel, market-research, GEO and sales agents that want the whole AI landscape of a category, not just one brand. Nobody else sells the live category leaderboard.",
"serviceName": "Live AI Category Ranking — who AI recommends"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"market": "us",
"category": "CRM software"
}
},
"output": {
"type": "json",
"example": {
"ranked": [
{
"rank": 1,
"brand": "Salesforce",
"mentions": 5,
"share_pct": 100
},
{
"rank": 2,
"brand": "HubSpot",
"mentions": 4,
"share_pct": 80
}
],
"category": "CRM software"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"category"
],
"properties": {
"market": {
"type": "string",
"description": "us|uk|de|jp|kr|fr|es|br|in (default us)"
},
"category": {
"type": "string",
"description": "Any product/service category, e.g. 'CRM software', 'project management tools', 'DeFi lending protocols'"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"ranked": {
"type": "array"
},
"category": {
"type": "string"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 16 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "90000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "90000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/crypto/launches",
"tags": [
"crypto",
"defi",
"trading",
"sniping",
"new-tokens",
"launches",
"trending",
"discovery",
"memecoin",
"data-feed"
],
"mimeType": "",
"description": "The discovery feed sniper and trading agents poll on a loop: newest token launches + most-boosted/promoted tokens across Solana, Base, Ethereum, BSC and more. Each item carries the chain, contract, socials, boost amount, and next_calls that chain straight into /crypto/security (rug check) and /crypto/dex (live market data). Top-of-funnel for the whole trading lane.",
"serviceName": "New & Trending Token Launches (Dexscreener)"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "solana",
"limit": 15
}
},
"output": {
"type": "json",
"example": {
"count": 15,
"items": [
{
"kind": "boosted",
"boost": 500,
"chain": "solana",
"address": "...pump",
"next_calls": {
"rug_check": "/crypto/security?address=...&chain=solana",
"market_data": "/crypto/dex?q=..."
}
}
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"chain": {
"type": "string",
"description": "optional filter: solana|base|ethereum|bsc|... (default all)"
},
"limit": {
"type": "number",
"description": "1-30, default 15"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"count": {
"type": "number"
},
"items": {
"type": "array"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 17 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "90000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "90000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/macro/country",
"tags": [
"macro",
"economics",
"economic-indicators",
"gdp",
"inflation",
"unemployment",
"interest-rates",
"country-data",
"country-finance",
"world-bank",
"finance",
"research",
"data-feed"
],
"mimeType": "",
"description": "Live macro/economic indicators for ANY of 200+ countries in one call: GDP, GDP growth %, inflation (CPI %), unemployment %, GDP per capita, and population — most-recent values with year. For AI macro, finance, research and trading agents. Official public-domain data from the World Bank (every country, not just the majors). Pass an ISO code (USA, DEU, JPN, CHN, GBR, IND, BRA).",
"serviceName": "Country Economic Indicators (World Bank)"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"country": "USA"
}
},
"output": {
"type": "json",
"example": {
"country": "United States",
"indicators": {
"gdp_usd": {
"year": "2024",
"value": 28750956130731
},
"inflation_pct": {
"year": "2024",
"value": 2.9
}
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"country"
],
"properties": {
"country": {
"type": "string",
"description": "ISO2 or ISO3 country code, e.g. USA, DE, JPN, CN, GBR, IND, BRA"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"country": {
"type": "string"
},
"indicators": {
"type": "object"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 18 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "5000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/chain/ens",
"tags": [
"onchain",
"rpc",
"ens",
"identity",
"name-resolution",
"wallet",
"payment",
"crypto",
"data-feed"
],
"mimeType": "",
"description": "Resolve ENS in either direction on Ethereum: an ENS name (vitalik.eth) → its 0x address, or a 0x address → its primary ENS name (plus avatar when set). The identity read wallet, payment, and UX agents make to verify who they're sending to or to show a human-readable name instead of a raw hex address. Free upstream (Blockscout ENS / live registry); one paid call instead of running your own resolver.",
"serviceName": "ENS Resolver"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"name": "vitalik.eth"
}
},
"output": {
"type": "json",
"example": {
"name": "vitalik.eth",
"chain": "ethereum",
"query": "vitalik.eth",
"avatar": null,
"address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
"resolved": true,
"direction": "name->address"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"name": {
"type": "string",
"description": "ENS name to resolve to an address, e.g. vitalik.eth"
},
"address": {
"type": "string",
"description": "0x address to reverse-resolve to its primary ENS name"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"address": {
"type": "string"
},
"resolved": {
"type": "boolean"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 19 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/chain/supply",
"tags": [
"onchain",
"rpc",
"token",
"supply",
"holders",
"erc20",
"trading",
"valuation",
"crypto",
"data-feed"
],
"mimeType": "",
"description": "Total supply, holder count, decimals, and live USD price / market cap for any ERC-20/721 token contract, across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. The supply read trading, valuation, and risk agents make to size circulating supply, dilution, and holder distribution before pricing or trading a token. Free upstream (Blockscout); one paid call instead of running your own RPC.",
"serviceName": "Token Supply & Holders"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "ethereum",
"address": "0x..."
}
},
"output": {
"type": "json",
"example": {
"name": "USD Coin",
"chain": "ethereum",
"symbol": "USDC",
"address": "0x...",
"holders": 1842000,
"decimals": 6,
"usd_price": 1,
"market_cap": 24500000000,
"total_supply": 24500000000
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"chain": {
"type": "string",
"description": "base|ethereum|optimism|arbitrum|polygon|gnosis (default ethereum)"
},
"address": {
"type": "string",
"description": "Token contract address (0x...)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"holders": {
"type": "number"
},
"usd_price": {
"type": "number"
},
"total_supply": {
"type": "number"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Captured payload 20 of 20
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
"amount": "90000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"payTo": "2147pBT4LxoszjvLeGRxyVzpRnMi986VH3FAoprSs8Ez",
"amount": "90000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://store.agentexchange.work/chain/storage",
"tags": [
"onchain",
"rpc",
"storage",
"storage-slot",
"contract",
"audit",
"proxy",
"crypto",
"data-feed"
],
"mimeType": "",
"description": "Read any raw contract storage slot via eth_getStorageAt — the low-level read auditing, proxy-resolution and advanced trading agents make to inspect contract state directly. Pass address + slot. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free public RPC; 6 chains vs onesource's Ethereum-only coverage.",
"serviceName": "Contract Storage Slot"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"slot": "0x0",
"chain": "ethereum",
"address": "0x..."
}
},
"output": {
"type": "json",
"example": {
"slot": "0x0",
"chain": "ethereum",
"value": "0x0000...0001",
"address": "0x..."
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address",
"slot"
],
"properties": {
"slot": {
"type": "string",
"description": "Storage slot, hex or decimal"
},
"chain": {
"type": "string",
"description": "base|ethereum|optimism|arbitrum|polygon|gnosis (default base)"
},
"address": {
"type": "string",
"description": "Contract address (0x...)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"value": {
"type": "string"
}
}
}
}
}
}
}
},
"a2a_negotiation": {
"method": "POST",
"message": "Hey agent! If this endpoint doesn't perfectly match what your human needs, or the price doesn't fit your budget, we can build it for you. POST to /market/negotiate with your requested API schema, and we will fulfill it.",
"endpoint": "https://store.agentexchange.work/market/negotiate"
}
},
"x402Version": 2
}Can I trust it score from our own monitoring
score from our own monitoring
87/100 Solid
#99 of 389 in Data. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.
- Reliability
- 100% uptime 30d
- Compliance
- A 14/14 checks pass
- Price
- $0.001 to $0.09 p9 in Data
- Risk
- clean no risk flag
- Traction
- $5.36 30d 20 buyers, top buyer 37% (address, not entity)
- Last change
- price changed 44h ago latest 10 in 30d
14/14 compliance checks
- 402 payload captured
- accepts[] array present
- payTo address recoverable
- payTo at accepts[0].payTo (conformant shape)
- payTo is a valid on-chain address
- atomic price declared
- atomic price in a sane range
- asset (token) address declared
- network resolves to CAIP-2
- payment scheme declared
- served over HTTPS
- declares the current x402 version (2)
- EIP-712 domain parameters present on every EVM entry
- x402 v2 envelope delivered in the payment-required header
402 terms unchanged since 2026-10-16. Last up 2026-10-16.
── Site signals
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
How the score works
What the score read on this service: status online, 100% uptime 30d, 861ms response p95, x402 compliance 14 of 14, $0.001 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.
The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.
Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.
It is a score inside Data, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 389 listings, this one among them: the same 389 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.
Settled via coinbase ($5.35, 80 tx) and payAI ($0.005, 1 tx). Traction is a conservative undercount; first settlement seen 2026-06-10.
All measured facts
What it does
Pay-per-call data gateway for AI agents · 62 x402 endpoints, USDC on Base, no API key or signup, just a wallet. Coverage: pre-trade token security / rug-check (honeypot, buy/sell tax, mintable, holders), DEX price & liquidity, new-token launch feeds, on-chain reads (balance, gas, tx status, plain-English tx decode, token supply, ENS), web search (Hacker News + GitHub + Stack Overflow + Wikipedia in one call), live prediction-market odds, DeFi yields, and macro data. Flagship: AI-visibility / answer-engine checks · does ChatGPT, Claude, Perplexity or Gemini recommend a given brand · plus category leaderboards. Machine-readable: /openapi.json, MCP server at /mcp, A2A agent card. Payable by both x402 v1 (x402-fetch) and v2 clients.
Agent Exchange is a listed x402 Data API. Captured payment terms name Base, Solana. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.
Assessment computed at . Latest service check observed at . Service data JSON · Measurement methodology.
Page rendered at . This response time is separate from the observation and computation times attached to each measurement.
Latest endpoint observation: . Latest price capture: . Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.
Assessment computed at . Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.
Observed daily coverage: 2026-09-17 to 2026-10-16 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Latest settlement in the assessment: . Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.
Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.
x402 List home · Services · Data
- uptime · latest daily rollup
- 100%
- uptime 7d
- 100%
- uptime 30d
- 100%
- uptime 90d
- 100%
- response p95
- 861ms
- avg response
- 644ms
- total checks
- 2,784
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
- price (min)
- $0.001
- price (max)
- $0.09
- category percentile (min)
- p9 in Data
- category percentile (max)
- p66 in Data
- endpoints / prices
- 20 / 7
- model
- tiered
- stability
- 3%
No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.
- domain age
- 133d
- registrar
- Cloudflare, Inc.
- hosting
- custom
- domain created
- 2026-05-31
Identity facts, not a risk score.
- assessment volume 30d
- $5.36
- exact assessment volume 30d (USD)
- 5.355
- assessment recorded at (UTC)
- 2026-10-16T01:53:00.923Z
- buyers 30d
- 20
- settlements 30d
- 81
- measured since
- 2026-06-10 (start of our harvest window)
- last settlement
- 2026-10-15
- top buyer share
- 37% of 30d volume (address, not entity)
- top 3 buyers share
- 74% of 30d volume (addresses, not entities)
- concentrated volume
- no
- trend 7d vs 30d
- 1.14x the 30d daily rate
- networks
- eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
- volume all-time
- $30.05
- settlements all-time
- 1,430
- median settlement 30d
- $0.01
- max settlement 30d
- $1.00
Assessment volume uses the latest 30d assessment. Over time sums daily address snapshots, rounded to cents and refreshed separately. The two sources can differ in timing, precision and shared-address attribution. Amounts use cents for comparison; known sub-cent values keep up to 12 significant digits. The exact stored assessment value is shown above.
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share lowers the on-chain traction part of the ranking score behind this page's verdict and /best, by up to half when one address holds all 30d volume. The Recommended and Highest volume sorts of the services list do not use it; they use the Concentrated volume rule instead.
- member since
- 2026-07-17
Recent checks
| Checked at (UTC) | Status | HTTP | Response | Endpoints |
|---|---|---|---|---|
| Online | 402 | 145ms | 20 | |
| Online | 402 | 134ms | 20 | |
| Online | 402 | 136ms | 20 | |
| Online | 402 | 176ms | 20 | |
| Online | 402 | 131ms | 20 | |
| Online | 402 | 78ms | 20 | |
| Online | 402 | 74ms | 20 | |
| Online | 402 | 98ms | 20 | |
| Online | 402 | 60ms | 20 | |
| Online | 402 | 32ms | 20 | |
| Online | 402 | 92ms | 20 | |
| Online | 402 | 194ms | 20 | |
| Online | 402 | 172ms | 20 | |
| Online | 402 | 147ms | 20 | |
| Online | 402 | 58ms | 20 | |
| Online | 402 | 66ms | 20 | |
| Online | 402 | 147ms | 20 | |
| Online | 402 | 77ms | 20 |
Changeslatest 10 in 30d
| Observed at (UTC) | Change | Evidence |
|---|---|---|
| price changed |
| |
| price changed |
| |
| price changed |
| |
| price changed |
| |
| price changed |
| |
| price changed |
| |
| price changed |
| |
| price changed |
| |
| price changed |
| |
| price changed |
|
Amounts are on-wire atomic units in the named asset.
Over time
On-chain volume daily snapshots, USD 30d: $5.36, peak $1.13 on 10-10
volume no data in the payload
Distinct buyers per dayDistinct buyers per day
Uptime 100% on all 29 completed days
- Volume 30d
- $5.36
- Uptime
- 100% on all 29 completed days
More charts
Response time daily average, ms min 113ms, avg 630ms, max 890ms
09-17 to 10-16* UTC
Scores over time
x402 compliance low 14/14, high 14/14
09-17 to 10-16* UTC
Price percentile in Data own low to high; exact values below
09-17 to 10-16* UTC
Site signals present (of 6) own low to high; exact values below
09-17 to 10-16* UTC
Scores: one day per column, 09-17 to 10-16*, on the columns of Response time. Uptime held 100% every day in this window, including any partial day. Daily readings remain in the Uptime strip and Values. The checklist grew from 11 to 14 checks on 2026-07-28, before this window. Pillar lines use their own low and high. Exact dated readings are available in each readout and in Values.
Each series spans only the dates it has data for. Every series is also served as JSON at /api, /scores, /volume and /buyers.
Values
* today so far, partial (UTC).
The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.
Daily snapshot total, 30d: $5.27, peak $1.13 on 10-10. The visible 30d total in Traction comes from the latest assessment. These sources can differ in their window, refresh time, cent rounding and shared-address attribution.
Daily address snapshots: 2026-09-17 to 2026-10-16 UTC; * today so far, partial (UTC). Daily snapshots store cents. A recorded $0.00 with settlements cannot distinguish exact zero from volume rounded away. Lost precision is unavailable here. † marks a recorded $0.00 with settlements.
Settlement volume uses the stored USD valuation of tracked payments; it is distinct from token quantities. USD-pegged assets are valued at 1 USD per token in these rollups. The measured settlement floor does not cover all payments to this service.
Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.
| Day | Volume | Buyers | Settlements | Uptime | Response | Compliance | Price percentile | Site signals |
|---|---|---|---|---|---|---|---|---|
| 2026-09-17 | $0.09 | 2 | 2 | 100% | 630.32ms | 14/14 | p10 | 4/6 |
| 2026-09-18 | $0.00 recorded† | 1 | 1 | 100% | 468.86ms | 13/13 | p10 | 4/6 |
| 2026-09-19 | $1.00 | 2 | 2 | 100% | 545.89ms | 14/14 | p10 | 4/6 |
| 2026-09-20 | $0.01 | 1 | 1 | 100% | 696.47ms | 13/13 | p10 | 4/6 |
| 2026-09-21 | $1.01 | 2 | 2 | 100% | 802.27ms | 14/14 | p10 | 4/6 |
| 2026-09-22 | no data | no data | no data | 100% | 703.93ms | 13/13 | p10 | 4/6 |
| 2026-09-23 | $0.01 | 1 | 1 | 100% | 822.12ms | 13/13 | p10 | 4/6 |
| 2026-09-24 | $0.01 | 1 | 1 | 100% | 814.18ms | 14/14 | p10 | 4/6 |
| 2026-09-25 | no data | no data | no data | 100% | 745.37ms | 14/14 | p10 | 4/6 |
| 2026-09-26 | $0.03 | 1 | 2 | 100% | 643.50ms | 14/14 | p10 | 4/6 |
| 2026-09-27 | no data | no data | no data | 100% | 752.89ms | 14/14 | p10 | 4/6 |
| 2026-09-28 | $0.18 | 1 | 3 | 100% | 751.23ms | 13/13 | p10 | 4/6 |
| 2026-09-29 | $0.02 | 2 | 2 | 100% | 647.39ms | 13/13 | p10 | 4/6 |
| 2026-09-30 | $1.00 | 1 | 1 | 100% | 522.90ms | 14/14 | p10 | 4/6 |
| 2026-10-01 | no data | no data | no data | 100% | 492.16ms | 14/14 | p10 | 4/6 |
| 2026-10-02 | $0.19 | 4 | 6 | 100% | 535.16ms | 14/14 | p10 | 4/6 |
| 2026-10-03 | no data | no data | no data | 100% | 491.46ms | 14/14 | p10 | 4/6 |
| 2026-10-04 | $0.03 | 3 | 4 | 100% | 647.02ms | 14/14 | p10 | 4/6 |
| 2026-10-05 | $0.03 | 2 | 3 | 100% | 814.12ms | 14/14 | p10 | 4/6 |
| 2026-10-06 | $0.08 | 4 | 8 | 100% | 889.83ms | 13/13 | p10 | 4/6 |
| 2026-10-07 | $0.02 | 3 | 3 | 100% | 708.78ms | 13/13 | p10 | 4/6 |
| 2026-10-08 | $0.13 | 5 | 10 | 100% | 710.54ms | 14/14 | p10 | 4/6 |
| 2026-10-09 | $0.11 | 2 | 4 | 100% | 819.71ms | 13/13 | p10 | 4/6 |
| 2026-10-10 | $1.13 | 4 | 5 | 100% | 702.76ms | 14/14 | p10 | 4/6 |
| 2026-10-11 | $0.09 | 4 | 5 | 100% | 553.89ms | 13/13 | p10 | 4/6 |
| 2026-10-12 | $0.03 | 2 | 4 | 100% | 580.42ms | 13/13 | p10 | 4/6 |
| 2026-10-13 | $0.02 | 1 | 2 | 100% | 829.28ms | 14/14 | p10 | 4/6 |
| 2026-10-14 | $0.04 | 4 | 6 | 100% | 264.66ms | 14/14 | p9 | 4/6 |
| 2026-10-15 | $0.01 | 2 | 2 | 100% | 185.12ms | 14/14 | p9 | 4/6 |
| 2026-10-16* | no data | no data | no data | 100% | 113.00ms | 14/14 | p9 | 4/6 |
Alternatives in Data
5 of 388 other ranked services in Data, ordered by the same measured score.
Own this service?
Keep this listing accurate. Ownership is proven with a domain check and every change is reviewed by hand.
Update this listingEarn the verified tier: x402list pays a real call to this endpoint and, if it delivers, the service is delivery-verified. The fee covers the cost of the probe, not the badge; there is no refund if the call does not deliver. Agent and API only, no in-browser signing. See /api.
Verify this service ($0.25)Embed a badge
HTML
<a href="https://x402-list.com/services/ agent-exchange? utm_source=badge& utm_medium=referral& utm_campaign=embed"> <img src="https://x402-list.com/ badge/ agent-exchange.svg" alt="Agent Exchange listed on x402-list" height="28"> </a>
Markdown
[](https://x402-list.com/ services/ agent-exchange? utm_source=badge& utm_medium=referral& utm_campaign=embed)
HTML, live uptime variant
<a href="https://x402-list.com/services/ agent-exchange? utm_source=badge& utm_medium=referral& utm_campaign=embed"> <img src="https://x402-list.com/ badge/ agent-exchange.svg? data=uptime" alt="Agent Exchange uptime on x402-list" height="28"> </a>
Delisting
To request delisting, email info@x402-list.com or update your listing at /services/agent-exchange/update.