108 pay-per-call AI and data APIs for agents, including 72 LLMs, image, video, audio, web, code, crypto, wallet, travel, and utility endpoints. Pay per request in USDC on Base, MegaETH, or Solana with no API keys or subscriptions.
Pay from $0.001 to $0.02 per request in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.
first settlement 2026-07-28 · $0.13 all-time · settled via coinbase
ASSESSMENT
updated 5h agoEvidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.
reliability 100%
- uptime 24h
- 100%
- uptime 7d
- 100%
- uptime 30d
- 100%
- uptime 90d
- 100%
- response p95
- 116ms
- avg response
- 92ms
- total checks
- 24
compliance A (14/14)
14 of 14 x402 conformance checks pass. Full checklist below.
price $0.001 to $0.02 (p11 in AI)
- price (min)
- $0.001
- price (max)
- $0.02
- category percentile (min)
- p11 in AI
- category percentile (max)
- p37 in AI
- endpoints / prices
- 13 / 6
- model
- tiered
- stability
- 100%
risk clean
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
- 170d
- registrar
- GoDaddy.com, LLC
- hosting
- custom
- domain created
- 2026-02-08
Identity facts, not a risk score.
traction $0.13 30d · 1 buyers
- volume 30d
- $0.13
- buyers 30d
- 1
- settlements 30d
- 126
- first settlement
- 2026-07-28
- last settlement
- 2026-07-28
- top buyer share
- 100% of 30d volume
- trend 7d vs 30d
- 4.29x the 30d daily rate
- networks
- eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
- volume all-time
- $0.13
- settlements all-time
- 126
- median settlement 30d
- $0.001
- max settlement 30d
- $0.001
- settled via
- coinbase
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share is a concentration signal, not part of the ranking score.
WHAT IT DOES
ai-derivedA pay-per-call API gateway providing various services including cryptocurrency data, ENS resolution, IPFS retrieval, travel information, web scraping, and AI-generated content.
- category
- multi-service-api
- in
- query params
- auth
- none
AI-generated summary. The measured data is never altered by it.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET |
|---|---|---|---|---|---|
| GET | /api/crypto/history | $0.003 | Base/Solana | USDC | |
| GET | /api/crypto/markets | $0.002 | Base/Solana | USDC | |
| GET | /api/crypto/price | $0.001 | Base/Solana | USDC | |
| GET | /api/crypto/search | $0.001 | Base/Solana | USDC | |
| GET | /api/crypto/trending | $0.001 | Base/Solana | USDC | |
| GET | /api/ens/resolve | $0.001 | Base/Solana | USDC | |
| GET | /api/ens/reverse | $0.001 | Base/Solana | USDC | |
| GET | /api/ipfs/get | $0.001 | Base/Solana | USDC | |
| GET | /api/token/metadata | $0.002 | Base/Solana | USDC | |
| GET | /api/travel/flights | $0.02 | Base/Solana | USDC | |
| GET | /api/travel/hotels | $0.02 | Base/Solana | USDC | |
| GET | /api/web/scrape | $0.005 | Base/Solana | USDC | |
| GET | /api/web/screenshot | $0.01 | Base/Solana | USDC |
13 endpoints
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /api/crypto/history returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
// request
curl -i 'https://x402engine.app/api/crypto/history'
// 402 response (captured by monitor) · 13 payloads · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/ens/resolve",
"mimeType": "application/json",
"description": "Resolve an ENS name to an Ethereum address"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"name": "vitalik.eth"
}
}
},
"schema": {
"type": "object",
"$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": [
"name"
],
"properties": {
"name": {
"type": "string",
"example": "vitalik.eth",
"description": "ENS name to resolve"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/ens/reverse",
"mimeType": "application/json",
"description": "Reverse-resolve an Ethereum address to its ENS name"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"example": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"description": "Ethereum address (0x...)"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/ipfs/get",
"mimeType": "application/json",
"description": "Fetch a file from IPFS by CID via gateway"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"cid": "QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG"
}
}
},
"schema": {
"type": "object",
"$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": [
"cid"
],
"properties": {
"cid": {
"type": "string",
"example": "QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG",
"description": "IPFS CID"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "3000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "3000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/crypto/history",
"mimeType": "application/json",
"description": "Historical price, market cap, and volume data for any coin"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"id": "bitcoin",
"days": "30",
"currency": "usd",
"interval": "daily"
}
}
},
"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": [
"id"
],
"properties": {
"id": {
"type": "string",
"example": "bitcoin",
"description": "Coin ID"
},
"days": {
"type": "string",
"default": "30",
"example": "30",
"description": "Days of history (1-365 or \"max\")"
},
"currency": {
"type": "string",
"default": "usd",
"example": "usd",
"description": "Fiat currency"
},
"interval": {
"type": "string",
"example": "daily",
"description": "Data interval (daily)"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "2000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "2000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/crypto/markets",
"mimeType": "application/json",
"description": "Market rankings with price, volume, market cap — filterable by category"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"page": 1,
"limit": 100,
"order": "market_cap_desc",
"category": "decentralized-finance-defi",
"currency": "usd"
}
}
},
"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": {
"page": {
"type": "number",
"default": 1,
"example": 1,
"description": "Page number (1-500)"
},
"limit": {
"type": "number",
"default": 100,
"example": 100,
"description": "Number of results (1-250)"
},
"order": {
"type": "string",
"default": "market_cap_desc",
"example": "market_cap_desc",
"description": "Sort order"
},
"category": {
"type": "string",
"example": "decentralized-finance-defi",
"description": "Filter by category ID"
},
"currency": {
"type": "string",
"default": "usd",
"example": "usd",
"description": "Fiat currency for pricing"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/crypto/price",
"mimeType": "application/json",
"description": "Real-time cryptocurrency prices for any coin in any fiat currency"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"ids": "bitcoin,ethereum",
"currencies": "usd,eur",
"include_24h_change": true,
"include_market_cap": 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": [
"ids"
],
"properties": {
"ids": {
"type": "string",
"example": "bitcoin,ethereum",
"description": "Comma-separated coin IDs (e.g. bitcoin,ethereum)"
},
"currencies": {
"type": "string",
"default": "usd",
"example": "usd,eur",
"description": "Comma-separated fiat currencies"
},
"include_24h_change": {
"type": "boolean",
"default": true,
"description": "Include 24h price change"
},
"include_market_cap": {
"type": "boolean",
"default": false,
"description": "Include market cap"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/crypto/search",
"mimeType": "application/json",
"description": "Search for a coin by name or symbol to get its CoinGecko ID"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"q": "bitcoin"
}
}
},
"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",
"example": "bitcoin",
"description": "Search query (coin name or symbol)"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/crypto/trending",
"mimeType": "application/json",
"description": "Currently trending coins on CoinGecko"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "2000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "2000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/token/metadata",
"mimeType": "application/json",
"description": "Token/asset metadata — name, symbol, decimals, chain info"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "ethereum",
"address": "0xdac17f958d2ee523a2206206994597c13d831ec7"
}
}
},
"schema": {
"type": "object",
"$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": [
"chain",
"address"
],
"properties": {
"chain": {
"type": "string",
"example": "ethereum",
"description": "Chain name"
},
"address": {
"type": "string",
"example": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"description": "Token contract address"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "20000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "20000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/travel/flights",
"mimeType": "application/json",
"description": "Search flights via Google Flights (SerpApi). Returns best flights, prices, airlines, and price insights."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"adults": "1",
"origin": "JFK",
"currency": "USD",
"destination": "LAX",
"travelClass": "1",
"departureDate": "2026-04-15"
}
}
},
"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": [
"origin",
"destination",
"departureDate"
],
"properties": {
"stops": {
"type": "string",
"description": "0=Nonstop only, 1=Up to 1 stop, 2=Up to 2 stops"
},
"adults": {
"type": "string",
"default": "1",
"description": "Number of adult passengers"
},
"origin": {
"type": "string",
"example": "JFK",
"description": "Departure airport IATA code"
},
"children": {
"type": "string",
"description": "Number of children"
},
"currency": {
"type": "string",
"default": "USD",
"description": "Currency code (e.g. USD, EUR)"
},
"maxPrice": {
"type": "string",
"description": "Maximum price filter"
},
"returnDate": {
"type": "string",
"description": "Return date for round trips (YYYY-MM-DD)"
},
"destination": {
"type": "string",
"example": "LAX",
"description": "Arrival airport IATA code"
},
"travelClass": {
"type": "string",
"default": "1",
"description": "1=Economy, 2=Premium Economy, 3=Business, 4=First"
},
"departureDate": {
"type": "string",
"example": "2026-04-15",
"description": "Departure date (YYYY-MM-DD)"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "20000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "20000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/travel/hotels",
"mimeType": "application/json",
"description": "Search hotels via Google Hotels (SerpApi). Returns properties with prices, ratings, and amenities."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"q": "hotels in Paris",
"adults": "2",
"currency": "USD",
"checkInDate": "2026-04-15",
"checkOutDate": "2026-04-18"
}
}
},
"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",
"checkInDate",
"checkOutDate"
],
"properties": {
"q": {
"type": "string",
"example": "hotels in Paris",
"description": "Search query — city name or hotel name"
},
"adults": {
"type": "string",
"default": "2",
"description": "Number of adults"
},
"sortBy": {
"type": "string",
"description": "3=Lowest price, 8=Highest rating, 13=Most reviewed"
},
"children": {
"type": "string",
"description": "Number of children"
},
"currency": {
"type": "string",
"default": "USD",
"description": "Currency code (e.g. USD, EUR)"
},
"maxPrice": {
"type": "string",
"description": "Maximum price per night"
},
"minPrice": {
"type": "string",
"description": "Minimum price per night"
},
"hotelClass": {
"type": "string",
"description": "Star rating (2-5)"
},
"checkInDate": {
"type": "string",
"example": "2026-04-15",
"description": "Check-in date (YYYY-MM-DD)"
},
"checkOutDate": {
"type": "string",
"example": "2026-04-18",
"description": "Check-out date (YYYY-MM-DD)"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "5000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "5000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/web/scrape",
"mimeType": "application/json",
"description": "Scrape any URL and get clean markdown content — ideal for extracting readable text from web pages"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"url": "https://example.com"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string",
"example": "https://example.com",
"description": "URL to scrape"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "10000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/web/screenshot",
"mimeType": "application/json",
"description": "Capture a screenshot of any URL — returns base64-encoded image, supports full-page capture"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"url": "https://example.com",
"fullPage": false
}
}
},
"schema": {
"type": "object",
"$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": [
"url"
],
"properties": {
"url": {
"type": "string",
"example": "https://example.com",
"description": "URL to screenshot"
},
"fullPage": {
"type": "boolean",
"default": false,
"description": "Capture full page"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
}
] OVER TIME
All charts share the 30d window selected here. Every series is also served as JSON at /api/v1/services/x402engine/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.
UPTIME
30d UPTIME 100%
RESPONSE TIME
AVG RESP 91ms
PRICE (captured 402, USD)
Median across 13 endpoints. Use the selector to isolate one.
SUB-SCORES (uptime + x402 compliance)
VOLUME (on-chain settlement, USD)
DISTINCT BUYERS
COMPLIANCE
14/14 checks pass · grade A- 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
SITE PILLARS
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
recent checks (18) · click to expand
TIME STATUS RESP
● OK 72ms
● OK 105ms
● OK 77ms
● OK 77ms
● OK 75ms
● OK 117ms
● OK 95ms
● OK 93ms
● OK 85ms
● OK 67ms
● OK 82ms
● OK 102ms
● OK 110ms
● OK 85ms
● OK 99ms
● OK 94ms
● OK 86ms
● OK 97ms
EMBED THIS BADGE
// HTML
<a href="https://x402-list.com/services/x402engine?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/x402engine.svg" alt="x402engine listed on x402-list" height="28"> </a>
// Markdown
[](https://x402-list.com/services/x402engine?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/x402engine?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/x402engine.svg?data=uptime" alt="x402engine uptime on x402-list" height="28"> </a>