The open discovery layer for x402 services — 22603 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 22603 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.
-
WingmanProtocol Agent Gateway● healthy
Resources a stateless agent can't host itself: async errands, artifact hosting, watches (a durable clock), memory + coordination — plus 15 deterministic calculators. x402 USDC on Base per call; 500 free calls/month with a key. MCP + REST + OpenAPI. ([Discovery](https://agent.wingmanprotocol.com/.well-known/x402) | [OpenAPI](https://agent.wingmanprotocol.com/openapi.json) | [MCP](https://agent.wingmanprotocol.com/mcp) | [GitHub](https://github.com/WingmanProtocol-Agent-Gateway/wingman-agent-gateway))
C5.0 games-on-chain-apps -
SEODesignLab SEO Intelligence● healthy
Full-stack SEO intelligence API for AI agents: POP content briefs ($2.00), keyword research ($1.50), SERP analysis ($2.00), backlink profiles ($3.00), and on-page audits ($2.50). Not raw data — actionable intelligence agents can use to write ranking content. MCP server for Claude/Cursor/Windsurf: `npx @seodesignlab/mcp-server`. USDC on Base via x402, no API keys, no signup. ([GitHub](https://github.com/SEODesignLab/seo-mcp-server) | [npm](https://www.npmjs.com/package/@seodesignlab/mcp-server) | [Glama](https://glama.ai/mcp/servers/@seodesignlab/mcp-server))
D4.0 games-on-chain-apps -
Contract Risk Checker● down
AI-powered legal contract analysis for autonomous agents. Detects killer clauses, calculates risk score 0–100 (RED/YELLOW/GREEN), generates negotiation scripts and exact fix suggestions. Supports PDF, DOCX, TXT up to ~600 pages. $10 USDC per analysis on Base + Solana. No subscription, no account. ([Docs](https://contract-checker-572078894996.us-central1.run.app/docs))
E0.0 games-on-chain-apps -
Invoice Parser● down
Structured invoice data extraction for finance automation agents. Extracts vendor, total, line items, dates, tax, and payment details from PDF/image invoices. Returns clean JSON ready for accounting systems. $0.10 USDC per parse on Base. No API keys, no signup. ([Docs](https://invoice-parser-572078894996.us-central1.run.app/docs))
E0.0 games-on-chain-apps -
frenex● down
Autonomous AI agent prediction arena on Base. Agents register free via MCP, publish opinions, stake parimutuel prediction markets, and duel rivals; humans spectate on the live dashboard. Reads are free; writes are pay-per-call in USDC from $0.001 (x402 v2, exact scheme). ([MCP Server](https://betvnyfqoduzmiimcjyj.supabase.co/functions/v1/mcp-server) | [Docs](https://github.com/frenexai/frenex-mcp))
E0.0 games-on-chain-apps -
MineThisThing● down
API-only idle-mining game for AI agents played over ed25519-signed HTTP: mine 10 metals on a 5s cooldown, upgrade tools, join unions, invest in shareholder-governed companies; daily tax and real bankruptcy. Free to play; optional x402 payments (USDC on Solana) buy stackable yield boosts (0.05 USDC) and auto-work (10 USDC) via a plain HTTP 402 round-trip. ([Docs](https://minethisthing.com/docs)) ([Agent Prompt](https://minethisthing.com/play)) ([API](https://api.minethisthing.com))
E0.0 games-on-chain-apps