x402 Blockchain API
x402 blockchain APIs: RPC, indexing, and on-chain data services that accept x402 payments per call. Discover them as machine-readable JSON and pay onchain through the 402 flow.
BLOCKCHAIN SERVICES ── 42 total ── for live status visit /status
STATUS ── ● online · ◐ degraded · ○ offline · ─ unknown ── live health, see /status.
VOL 30D and BUYERS 30D are a measured 30d floor across listed services, not an ecosystem total; an unmeasured service is not counted as zero.
·sh = shared payout address; volume attributed pro-quota (buyers left whole).
| STATUS | NAME | DESCRIPTION | EP | FROM $/REQ | UPTIME 24H | VOL 30D | BUYERS 30D | NETWORKS |
|---|---|---|---|---|---|---|---|---|
| ● | XRPL Microstructure | First-party XRPL market-microstructure and safety data, served per call over x402 and paid in USDC on Base. Cumulative order-book depth by bps band with an execution-cost curve, a 250-issuer safety register (blackholed / global-freeze / no-freeze flags), token name-collision evidence including homographs built from invisible bytes, trustline census by issuer, wallet-level maker attribution, ledger vitals, and the XRPL agentic-payment market itself. Generated from a local rippled node on an unbroken schedule; every artifact carries its own as_of and gaps are attributed rather than hidden. | 9 | $0.05 | 100.00% | $0 | 0 | BSE |
| ● | SolSigs | Real-time Solana data APIs plus ProofGuard receipts for AI agents: 22 specialist workers paid per call in USDC via x402 - DEX prices, arbitrage, wallet intelligence, launch detection, plus signed trust scores and payment/fulfillment receipts. No API keys, no subscriptions. | 22 | $0.001 | 100.00% | $0 | 0 | SOL |
| ● | AeroCheck | Takes an Aerodrome or Uniswap v2 compatible pool address on Base and returns per token risk scores, honeypot status, risk flags and a safe, caution or avoid verdict for the pair. | 1 | $0.05 | 100.00% | $0.98 ·sh | 34 | BSE/SOL |
| ● | Deepnets API | Solana on-chain analysis API: token safety scoring, holder breakdowns, wallet funding-network graphs, social research, trending feed and watchlist. Paid per call in USDC on Solana via x402. | 10 | $0.01 | 100.00% | $0.10 | 3 | SOL |
| ● | chainkit | 17 on-chain compute primitives in one x402 API: keccak256, ABI encode/decode, function selectors, EIP-712 hashing + signature recovery/verification, merkle root/proof/verify, CREATE/CREATE2 address derivation, ENS namehash, checksum, unit conversion, RLP encode/decode. Pure computation, no data dependencies. 0.02 USDC per call on Base. | 1 | $0.02 | 100.00% | $0.0016666667 ·sh | 1 | BSE |
| ● | GPUOps Blockchain Data MCP | Multi-chain blockchain data API supporting 7 chains. JSON-RPC proxy balance checks transaction lookups block data gas prices. Pay-per-call with USDC on Base via x402. | 5 | $0.001 | 100.00% | $0 | 0 | BSE |
| ● | Stakevia | Pay-per-request Solana validator due-diligence reports. | 1 | $1.00 | 100.00% | $0 | 0 | SOL |
| ● | Holoworld $FIGHT Pass | Holoworld x402 mint endpoint on Solana. GET /api/mint mints the $FIGHT Pass for 50 USDC per request. | 1 | $50.00 | 100.00% | $0 | 0 | SOL |
| ● | Testnet ETH Merchant | Buy Sepolia and Hoodi testnet ETH with Base or Solana mainnet USDC through x402. Intended for wallet, smart contract, validator, and AI agent testing. Testnet ETH has no monetary value. | 2 | $0.05 | 100.00% | $1 | 3 | BSE/SOL |
| ● | Feeless402 | Reference x402 endpoint paid over the feeless Nano (XNO) rail: spec-shaped x402 v2 402 (scheme exact, network nano:mainnet, 0.0001 XNO per call — no gas, so the metered amount is the payer amount, sub-second on-chain settlement). The 402 carries the rail-hint extension with structured onboarding metadata pointing at a zero-cost faucet on the same host, so a new agent can fund itself and complete a paid call in one session without keys or signup. Open-source reference client: pip install feeless402 (CLI + remote MCP server at /mcp). | 1 | --- | 100.00% | --- | --- | |
| ● | BentCrypto | Machine-payable token intelligence APIs for AI agents and automated applications. Token Risk supports Solana and Base over x402 v2; Token Security provides Solana token-control and Token-2022 security analysis. $0.01 USDC per authorized request, with no subscription or API key required for paid calls. | 2 | $0.01 | 100.00% | $0.09 | 1 | BSE/SOL |
| ● | anchor-x402 | 16 pay-per-call x402 services for AI agents: on-chain Merkle anchoring, wallet/address security screening, Web3 data resolution (tx & calldata decode, ENS name resolution), token pricing, content analysis, and verifiable randomness. No API keys or accounts. Settle per request on Base USDC, Solana USDC, or Polygon JPYC (1 yen / anchor) | 16 | $0.001 | 100.00% | $4 | 44 | BSE/POL/SOL |
| ● | LiquidPad | Pay-per-request LiquidPad endpoints. Verify whether a token was deployed via LiquidPad (ERC-8004 anchored), get full agent provenance with fee split, or read the full agents registry snapshot. | 3 | $0.001 | 100.00% | $0 | 0 | BSE |
| ● | Loyal Spark | Paid API for onchain loyalty programs on Base: loyalty token deployment, minting to customer wallets, rewards catalog, vouchers and P2P exchange, usable by agents over REST or MCP. | 10 | $0.001 | 100.00% | $136 | 107 | BSE |
| ● | Hugen DeFi Intelligence API | DeFi data and token security API. Endpoints cover token and address risk checks, phishing and approval lookups, bridge routes and quotes, plus chain level stablecoin supply, DEX volume and protocol fees. JSON over GET, $0.01 per call in USDC on Base or Solana. | 6 | $0.01 | 100.00% | $1 ·sh | 362 | BSE/SOL |
| ● | ZERO | Five pay-per-call onchain instruments on Base, sold by an autonomous AI agent that runs on its own revenue. /api/payout-oracle (0.03 USDC) measures the EXACT fee any contract pays an arbitrary caller right now by simulating settlement - reward getters lie. /api/interface-xray (0.04 USDC) recovers the COMPLETE external interface of any contract straight from runtime bytecode - works on unverified contracts and proxies. /api/contract-audit (0.05 USDC) returns a smart-contract red-flag report quoted from verified source lines. /api/wallet-brief (0.02 USDC) is a plain-language activity brief for any address. /api/buy-zero (1 USDC) delivers 250k ZERO coin OTC on-chain. No account, no API key, no signup: x402 exact scheme, or plain USDC transfer plus &tx=<hash>. | 5 | $0.02 | 100.00% | $0 | 0 | BSE |
| ● | LoneStarOracle ContractCheck | Paid API that checks a deployed contract address on Ethereum, Base, BSC, Arbitrum or Polygon and returns source verification status, proxy type, owner address, compiler version and risk flags. $0.05 per call via x402. | 1 | $0.05 | 100.00% | $0.98 ·sh | 34 | BSE/SOL |
| ● | fry.farm x402 Agentic Actions | 15 pay-per-call USDC endpoints on Algorand mainnet: DeFi/DePIN data feeds plus non-custodial transaction builders (staking, LP farming, NFT mint, P2P offers). Builders return unsigned atomic groups - agents sign with their own wallet and submit. No API keys, no accounts. Free machine-readable catalog at https://fry.farm/x402/catalog | 15 | $0.001 | 100.00% | --- | --- | |
| ● | Whale Intelligence API | Resolves Ethereum addresses to entity labels, name tags and categories from a database of about 412,000 labeled addresses, and returns large ETH transfers with labeled counterparties. Paid per call in USDC on Base. | 2 | $0.01 | 100.00% | $1 ·sh | 362 | BSE |
| ● | ChainPeek | Pay-per-call EVM reads for AI agents. No API key. Default Base, plus a human-readable wallet snapshot (native + USDC + WETH + nonce + gas) in one call. $0.001-$0.002 USDC on Base via x402 v2. | 7 | $0.001 | 100.00% | $0 | 0 | BSE |
| ● | Token Safety Check (x402) | Token safety & rug-pull/honeypot risk check — scans an ERC-20's bytecode & ownership on Base/Ethereum for mint, blacklist, pause, fee traps Pay-per-call USDC on Base via x402; free agent-readable help doc at the base path. | 1 | $0.02 | 100.00% | $0.42 | 14 | BSE |
| ● | DJZS Protocol | Deterministic pre-execution audit of a prediction-market trade thesis. Submit the reasoning behind a trade as free text; receive PASS, WAIT, or FAIL with the taxonomy codes that fired, a risk score, and a reproducible verdict_hash. Audits the reasoning, not the transaction. Out-of-scope requests are refused free. Payable over HTTP x402 or MCP. | 1 | $2.00 | 100.00% | $12 | 3 | BSE |
| ● | FiatDock Marketplace | An MCP marketplace where AI agents discover and pay for other people's MCP services per call in USDC over x402. Payment settles directly buyer-wallet to seller-wallet on Base — non-custodial, no accounts, no API keys, no subscriptions. 33 services are listed today (24 currently buyable); agents browse them with the free search_services tool and pay with call_service. FiatDock also runs 12 first-party paid endpoints of its own: Base chain reads (gas, blocks, balances, tx status, ERC-20 metadata) from $0.001, token-safety and rug screening, address intelligence, a full token report, and a non-custodial USDC-to-bank ramp. Five tools are free and need no wallet at all. | 12 | $0.001 | 100.00% | $0.22 | 11 | BSE |
| ● | contract-guard API | Pre-interaction risk signals for any EVM contract/token address. USDC on Base via x402. | 1 | $0.005 | 100.00% | $0.45 | 12 | BSE |
| ● | ForgeMesh Anomaly Tracker | Pay-per-call anomaly and signal API: sequence anomaly scoring on chain event windows, mempool and whale monitoring, stablecoin depeg checks, plus aviation and GitHub signal endpoints. USDC on Base, from $0.01 per call, no signup. | 10 | $0.01 | 100.00% | $0.32 | 13 | BSE |
| ● | LedgerBrain x402 KYA KYT KYE Compliance API | x402 pay-per-use KYA, KYT, and KYE crypto compliance API for AI agents. Provides address risk reports, transaction risk screening, entity due diligence, compliance risk screening, and auditable report outputs via USDC payments on Base. No LedgerBrain API key required for x402 endpoints. | 3 | $0.10 | 100.00% | $0 | 0 | BSE |
| ● | OneSource | RPC API for Ethereum mainnet and Sepolia, with 25 pay-per-call endpoints (blocks, balances, transactions, receipts, event logs, ENS, contracts, NFTs) payable in USDC on Base via x402, with no API key. | 10 | $0.001 | 100.00% | $82 | 2053 | BSE |
| ● | Base Agent Evidence & Route API | Paid, finality-aware Base account and transaction evidence, bounded activity lookup, and dry Base-USDC-to-NEAR-USDC route quotes. | 5 | $0.001 | 100.00% | $0 | 0 | BSE |
| ● | WalletRisk | Risk scoring for EVM wallet addresses: transaction history, DeFi exposure and behavioral flags, returned as a numeric score via a single paid endpoint. | 1 | $0.15 | 100.00% | $0.98 ·sh | 34 | BSE/SOL |
| ● | Hugen Intel API | Crypto due diligence API. Token, wallet, contract and DeFi yield reports combining security checks, market data and an AI risk score from 0 to 100 with red and green flags. Full report $0.50, lite variant without AI prose $0.02, in USDC on Base or Solana. | 3 | $0.50 | 100.00% | $1 ·sh | 362 | BSE/SOL |
| ● | apix402 — Onchain Verified Data | Onchain governance, treasury and risk data for agents, read from the contracts rather than mirrored from a dashboard. DAO proposals cross-checked between Snapshot and each DAO's own Governor contract; whether a known proposal actually executed rather than merely succeeded; Hedgey and Sablier vesting plans read from the contract; a beneficiary's outgoing transfers before their cliff; Gnosis Safe owner, threshold and module drift compared against the same Safe's configuration at an earlier block; Chainlink and Pyth staleness judged per feed against each feed's own measured cadence; and Aave wstETH depeg exposure recomputed independently of the published health factor. $0.01-$0.05 USDC per call on Base, x402 v2, free /preview on every paid route, no signup and no API key. | 8 | $0.001 | 100.00% | $0.02 | 4 | BSE |
| ● | PreApe | Arc and RadarDEX token risk checks for AI agents. Free preape_check triage; preape_analyze is $0.03 USDC on Base via x402 v2. Scores observed creator history, LP lock, liquidity, and holder concentration. GO is not a buy signal. | 1 | $0.03 | 100.00% | $0 | 0 | BSE |
| ● | Onchain Query API | Pay-per-call EVM chain data for AI agents: wallet balances, token profiles with live DEX market data, spot prices, gas market, decoded transactions, ENS. Base, Ethereum, Arbitrum, Optimism, Polygon. No API keys or node infra - one x402 USDC micropayment per call ($0.002-0.004). | 6 | $0.002 | 100.00% | $0 | 0 | BSE |
| ● | true402 | Machine-native marketplace of x402-gated APIs. 27 paid endpoints, no accounts and no API keys - the wallet is the identity. Strongest coverage is on-chain token safety: honeypot buy/sell simulation via eth_call state-override, token reports and address checks across Base, Ethereum and BNB Smart Chain, deployer reputation on Base and Ethereum, and a structural Solana mint check (mint/freeze authorities only, no trade simulation). Also liquidity-pull history from a durable archive, unsigned transaction preflight, new-pair and whale-swap feeds, screenshot and page-render tools, SEO/GEO audit, prediction markets, DeFi yields, and an OpenAI-compatible LLM router. USDC on Base (eip155:8453), EIP-3009 exact scheme via a no-KYC facilitator; the amount must equal the quote exactly, and settlement is submitted only on a 2xx, so a failed call is never charged. Flat pricing $0.003-$0.04 per call (SEO audit is priced per page); the LLM router is metered per token. Machine discovery via /openapi.json, /.well-known/x402-manifest.json and /llms.txt, plus an official MCP server and LangChain, CrewAI, Vercel AI SDK and AgentKit clients. | 27 | $0.0001 | 100.00% | $0.70 | 2 | BSE/SOL |
| ● | LoneStarOracle ChainScout | Paid on-chain intelligence API returning whale transfers, trending tokens and DeFi protocol TVL shifts on Base and Ethereum, priced per query in USDC. | 5 | $0.05 | 100.00% | $0.98 ·sh | 34 | BSE/SOL |
| ● | LoneStarOracle TokenScope | Returns a risk report for an ERC-20 token contract: risk score, GoPlus security flags, honeypot detection, liquidity, top-holder concentration, ownership status and an AI analyst verdict. | 1 | $0.15 | 100.00% | $0.98 ·sh | 34 | BSE/SOL |
| ● | GenTech Labs x402 Gateway | GenTech Labs x402 Gateway: 10 paid x402 endpoints across 5 rails (base/algorand/avalanche/xlayer/solana). Agentic treasury + agent-economy API suite: treasury defense, wallet analysis, agent discovery/research, DeFi LP analytics, market intelligence, deals, token security, NFT search. Settlement via USDC x402. Backed by real on-chain revenue. | 10 | $0.005 | 100.00% | $0.42 | 6 | AVX/BSE/SOL |
| ● | APEX on X1 | On-chain market data for X1, a Solana fork. Pay per call in USDC on Solana or XNT on X1. | 1 | $0.01 | 98.53% | $0 | 0 | BSE/SOL |
| ○ | paypi — Solana intelligence for AI agents | Solana on-chain intelligence sold per call in USDC over x402. decode: turn any transaction (by signature or raw base64) into human-readable instructions, accounts and program names across 46 known mainnet programs. simulate: dry-run a transaction against live mainnet state before signing, returning compute units, logs and failure reasons via a paid RPC. kamino-liquidation: liquidation risk for any wallet on Kamino lending — LTV vs liquidation LTV, health buffer, per-asset liquidation prices and risk tier, using ported on-chain math rather than estimates. Charge-on-success: failed or refused calls are never charged. Free request/response examples at /samples. | 3 | $0.005 | 0.00% | $0 | 0 | BSE/SOL |
| ○ | Utilia Solana Preflight | Machine-payable Solana transaction intelligence for autonomous agents: live priority-fee quantiles, transaction simulation, confirmed-transaction diagnostics, and token mint risk analysis. Every response is deterministic structured JSON, paid per call in mainnet USDC over x402 v2, with no account or API key. | 4 | $0.002 | 0.00% | --- | --- | SOL |
| ○ | SNTL Helium Intelligence | Pay-per-query intelligence over the Helium DePIN network, settled on Solana. A datalake half a million records deep and growing — over a year of on-chain history, AI-enhanced and classified: threat heuristics, anomaly detection, yield-loss and yield-recovery attribution, hotspot configuration and location, and geo-spatial binding of blockchain activity (lat/long + time) to real economic events. The moment a wallet is flagged as an anomaly, its full causal history becomes queryable. Agents POST read-only SQL and receive structured rows — flat $0.01 USDC per query via standard x402 (PayAI facilitator), first tier free, no signup or API key; plus single-event lookup by transaction id and a free wallet-history endpoint. Built for Fleet Managers, Helium hotspot owners, and every party in the Helium ecosystem. | 1 | $0.00 | 0.00% | $0 | 0 | SOL |
| ○ | 3Route | 3Route is an agent-ready multichain swap API from Baking Bad, a provider of tools for agents. Discover tokens for free, then pay per quote or unsigned swap. | 4 | $0.001 | 0.00% | $4 | 4 | BSE/SOL |
42 of 42 services ── category: Blockchain ── all services