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.
-
Warden● healthy
Pre-execution security for agents on Base. Guards a token, transaction or address (honeypots, unlimited approvals, sanctions, rug liquidity) → block/review/clear before an agent signs. Free MCP: `npx -y warden402-mcp`. ([GitHub](https://github.com/sukrutkrdg/warden402.xyz))
C5.0 security-audits -
BLACK_WALL● healthy
Pre-signature payment-risk oracle for x402 agents: one call returns GO / HOLD / STOP for paying a counterparty — from OFAC sanctions screening, counterparty reputation, and price-anomaly — plus an independently-verifiable Ed25519 signed receipt. Verdict only, never custody; free under $10 at risk, x402-payable above. Remote MCP tool (`forecast_payment`) + npm (`blackwall-mcp`). ([MCP](https://mcp.blackwalltier.com)) ([demo](https://check.blackwalltier.com/demo)) ([GitHub](https://github.com/bluetieroperations-create/blackwall-mcp))
D4.0 security-audits -
stripe-mcps● degraded
Trust verification + AML sanctions screening before Stripe/x402 payments. Agent identity (ECDSA), 75K+ sanctions entries (UK HMT + OFAC SDN), behavioural spend limits. OWASP MCP Security Cheat Sheet aligned. ([GitHub](https://github.com/razashariff/stripe-mcps))
D1.8 security-audits -
Crest Verify● down
Verification tools for x402 endpoints, including conformance checks, service indexing, and signed trust receipts. ([npm](https://npmjs.com/package/@crestdeploymentsystems/verify) | [GitHub](https://github.com/andysalvo/crest))
E0.0 security-audits