The open discovery layer for x402 services — 22606 verified service entries, LLM-ranked recommendations via /api/v1/ask, and service cards with payment, call, and quality metadata.
Add your APIAggregated from public x402 sources — x402scan, awesome-x402, Coinbase CDP Bazaar, pay-skills PRs — plus our own crawling and provider self-submissions. Every entry is de-duplicated across sources, liveness-probed (health + on-chain payment demand), and passed through ingestion filters (bare-IP / dead-host removal) before listing — distilling tens of thousands of raw endpoints down to 22606 verified services.
Overall Stats
Live counters across the directory and discovery API
Top rated
by quality score · health · trust signals| # | Tool | Grade | Score |
|---|---|---|---|
| 1 |
api.onesource.io
ERC20 token balance for any Ethereum wallet - USDC, USDT, DAI, or any token - via balanceOf (eth_call) on OneSource live Ethereum RPC
|
A | 10.00 |
| 2 |
OneSource - Ethereum RPC for AI Agents
Ethereum mainnet and Sepolia testnet RPC for AI agents, served from OneSource-operated nodes. Live block, balance, contract, NFT, transaction, and event data. Pay per call or use batch/session mode — USDC on Base via x402, or pathUSD/USDC.e on Tempo via MPP. No API keys required.
|
A | 10.00 |
| 3 |
Bitrefill x402
Buy gift cards, eSIMs, mobile top-ups and prepaid cards with USDC via x402. 10,000+ brands across 180+ countries. No API keys or Bitrefill account required — wallet payment and optional SIWX sign-in only.
|
A | 9.90 |
| 4 |
BotPay — AI Agent Payment Network and x402 Infrastructure
BotPay provides payment access, API discovery, automated service delivery, and settlement infrastructure for AI agents, applications, robots, and connected machines.
|
A | 9.86 |
| 5 |
Otto AI x402 — Market Intelligence, DeFi & Trading
84 pay-per-call AI services on x402 V2 — market intel, DeFi execution, AI creative tools. USDC on Base on every endpoint, Solana USDC on 66 of 84. From $0.001 per call.
|
A | 9.65 |
| 6 |
BlockRun — The routing & payment layer for AI
Pay for the outcome. One endpoint for every model, tool and data source an agent needs — each call priced before it runs, at the best value per dollar. 114 models and 100 data and tool APIs.
|
A | 9.63 |
| 7 |
blockrun-web-vbsbhh7lea-uc.a.run.app
AI chat completions API - pay per request with USDC on Base
|
A | 9.62 |
| 8 |
BlockRun
BlockRun is the routing and payment layer for AI. One OpenAI-compatible endpoint routes to 87 LLMs plus image, video, music and speech generation, web search, prediction-market and on-chain data, and multi-chain RPC. Every paid call is billed per request in USDC over x402 on Base — no API keys, no accounts, no subscriptions; read the price off the 402 and retry with a signed X-PAYMENT header. 7 open-weight chat models are free and need no wallet.
|
A | 9.62 |
| 9 |
ACP - Virtuals Protocol
Virtuals Protocol ACP Job Payment Service - Pay for ACP jobs using x402 protocol
|
A | 9.60 |
| 10 |
stable-enrich-git-mason-migrate-off-prices-map-merit-systems.vercel.app
Exa Search - Neural search across the web
|
A | 9.59 |
All services
Crawled from awesome-x402, CDP Bazaar, x402scan and manual submissions · refreshed daily.
-
Tate Programs x402 Surface Checks● healthy
Paid public-surface readiness checks for x402, MPP, Pay.sh, A2A, and agent-skill launches. Four Base mainnet USDC endpoints for x402 launch triage, 402 Index watch, agent-skill trust checks, and A2A payment-surface triage. ([Discovery](https://the402.tateprograms.com/.well-known/x402)) ([Agent Card](https://the402.tateprograms.com/.well-known/agent.json)) ([OpenAPI](https://the402.tateprograms.com/openapi.json)) ([Docs](https://tateprograms.com/x402-surface-check.html))
C+5.8 security-analysis -
x402-endpoint-validator● healthy
GitHub Action that validates x402 endpoints in CI: 402 challenge shape, EIP-712 typed data, settlement path, well-known schema. Drop-in YAML, MIT licensed. ([Marketplace](https://github.com/marketplace/actions/x402-endpoint-validator))
D4.0 security-analysis -
Sentinel Payment Preflights● healthy
Free local MCP server that deterministically checks decoded x402 v2 PaymentRequired JSON against a scoped exact-EVM EIP-3009 safety profile; the preflight makes no network requests and performs no wallet access, signing, or settlement. ([MCP Registry](https://registry.modelcontextprotocol.io/v0.1/servers/io.github.TerminallyLazy%2Fsentinel-recovery-services/versions/0.3.0))
D4.0 security-analysis -
Base Token Safety Scanner● down
Free API that analyzes Base chain ERC-20 tokens for rug pull risks, honeypots, ownership issues, and security flags. Returns risk score with detailed flag breakdown. Built for AI agents and DeFi traders. ([GitHub](https://github.com/0xVarius/base-token-scanner)) ([Guide](https://base-token-scanner.onrender.com/guide))
E0.0 security-analysis -
chainfacts● down
Verifiable token risk / pre-trade rug screen for any Base ERC-20. Deterministic contract-security facts (upgradeable proxy / EIP-1967, ownership renounced, mint authority, paused) + holder concentration (Gini, HHI, Nakamoto, top-1/3/5/10 share) + a 0-100 risk score, each block-pinned with a reproducible sha256 attestation any agent can independently recompute. 3 pay-per-call routes, USDC on Base, no API key: `POST /token-risk-report` ($0.01), `POST /batch-token-risk-screen` (up to 25 tokens, $0.005), `POST /onchain-snapshot-analyze` ($0.003). ([Offerings](https://chainfacts-x402.onrender.com/offerings)) ([Health](https://chainfacts-x402.onrender.com/health))
E1.0 security-analysis