Agent Tools

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.

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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 22603 verified services.

Overall Stats

Live counters across the directory and discovery API

/api/v1/stats /.well-known
Services indexed
22603
x402 APIs · MCP · agent tools
Healthy
9682
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.

  • Studio X Image Generation
    ● healthy

    Create any image with uncensored models and exact USDC payment through x402.

    B7.4 inference base $0.0033 USDC / call
  • Money Mind — Eval Selection Check
    ● healthy

    You tried N prompts, models or configs and kept the best one. How much of that margin is selection rather than skill? Free, no account, no wallet. Same arithmetic as multiple-testing correction, aimed at anyone running an LLM eval.

    B7.2 inference base $0.0300 USDC / call
  • BananaBanana
    ● healthy

    Pay-per-call AI image, video and speech generation on Google's Nano Banana, Veo 3.1 and Gemini TTS. One endpoint, three tools chosen in the request body. Images from $0.03, video from $0.30, speech $0.01 per 200 characters. No account, no API key: an unpaid POST answers 402 with the exact price for the given arguments. Discovery manifest at https://bananabanana.pro/.well-known/x402

    C+6.0 inference base $0.0100–$0.3000 USDC
  • OpenRelay
    ● down

    OpenAI-compatible LLM inference for AI agents. Pay-per-request in USDC via x402 — no signup, no API keys, no subscriptions. $0.10 per 1M tokens (input + max_tokens), $0.0005 min per request. Models: DeepSeek V4 Flash (400k ctx), Kimi K2.6, MiniMax M2.7. USDC on Solana or Base. Facilitator: PayAI (gasless).

    D1.9 inference basesolana $0.0005 USDC / call
  • OpenRelay Premium
    ● down

    OpenAI-compatible LLM inference for AI agents. Pay-per-request in USDC via x402 — no signup, no API keys. $0.10 per 1M tokens, $0.001 min. Models: DeepSeek V4 Flash (400k ctx), Kimi K2.6, MiniMax M2.7. USDC on Solana or Base via PayAI (gasless).

    D1.9 inference basesolana
  • Clarity
    ● down

    Direct pay-per-request local AI inference for autonomous agents. OpenAI-compatible Qwen3 1.7B chat completions over x402 v2. No API key required.

    D2.0 inference Base $0.0010 USDC / call