Agent Tools

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.

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Aggregated 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

/api/v1/stats /.well-known
Services indexed
22606
x402 APIs · MCP · agent tools
Healthy
9684
last health check < 6 h
Categories
227
crypto · agent · data · LLM …
Chains
81
base · solana · arbitrum · …

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.

  • AgentBIT EU VAT Validation
    ● healthy

    LIVE EU VAT number validation against VIES, the European Commission's official service — not a format check: the number is verified in the member state's actual register, returning the registered trader name and address where published. Covers all 27 member states plus Northern Ireland (XI). Essenti

    B+8.2 compliance basepolygonarbitrumsolanaeip155:480 $0.0200 USDC / call
  • AGORA Omega
    ● healthy

    Pay-per-call verification APIs for AI agents: EU crypto/finance counterparty check (French AMF blacklists + ESMA MiCA register + EU/UN/OFAC sanctions), supplier due diligence, French company registry, AI deliverable verification, EU AI Act check. Paid in USDC via x402, no account, no API key. MCP server: https://agoraverify.com/mcp — OpenAPI: https://agoraverify.com/openapi.json — Discovery: https://agoraverify.com/.well-known/x402. $0.01–$0.25 per call.

    B6.6 compliance basearbitrum $0.0150 USDC / call
  • OFAC SDN Wallet Screen
    ● healthy

    Screen a crypto wallet (EVM, BTC, TRON, SOL, ...) against every OFAC SDN Digital Currency Address. Returns sanctioned true/false, verdict, SDN name, programs, list date. Use before paying or accepting funds from an unfamiliar wallet. GET ?address=

    C+6.0 compliance base $0.0100 USDC / call
  • RegRadar
    ● healthy

    Pay-per-impact SADC regulatory coding: jurisdiction, obligations, deadlines, penalties, risk score. $0.01 USDC/call, x402, not legal advice.

    C+6.0 compliance solana $0.0100 USDC / call
  • OFAC Sanctions Screening
    ● down

    OFAC SDN sanctions screening with fuzzy Jaro-Winkler matching. Returns results plus a signed EIP-712 proof-of-execution receipt.

    D1.3 compliance base