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.
-
_done● healthy
Suite of x402 micropayment-gated utility APIs for AI agents (Web lookups, site analysis, data and more). Pay-per-call, no API keys or subscriptions — agents discover and pay per request via x402. Base + Solana mainnet payment support.
B7.7 monitoring-analytics -
SwarmX (swarms-x402)● healthy
Multi-agent AI orchestration with x402 micropayments. 49 endpoints, 39 MCP tools, knowledge/RAG. ([npm](https://www.npmjs.com/package/swarms-x402)) ([Live](https://swarmx.io))
D4.0 monitoring-analytics -
Sentinel● healthy
Enterprise audit & compliance layer for x402 payments. Budget enforcement (per-call, hourly, daily), structured audit trails, real-time dashboard, and public payment explorer. SDK: [`@x402sentinel/x402`](https://npmjs.com/package/@x402sentinel/x402). Built by [Valeo](https://valeocash.com)
D4.0 monitoring-analytics -
ScoutScore● healthy
Trust scoring infrastructure for x402 services. Monitors 1,700+ services with continuous health checks and fidelity probes using a 4-pillar model (Contract Clarity, Availability, Response Fidelity, Identity & Safety). [API Docs](https://scoutscore.ai/docs) · [npm SDK](https://www.npmjs.com/package/@scoutscore/sdk) · [MCP Server](https://www.npmjs.com/package/@scoutscore/mcp-server)
D4.0 monitoring-analytics -
Mycelium Trails● healthy
Post-execution accountability receipts for x402 agent payments. Each settled payment generates a signed trail record: payment_hash + action_ref (SHA-256 commitment) + dual-chain anchor (Arbitrum One + Base). Verifiable by anyone. Usable for audits, disputes (Kleros), reputation scoring, and insurance. 21 sats/trail via Lightning. Part of the [Agent Trust Loop](https://github.com/giskard09/rama-core).
D4.0 monitoring-analytics -
x402 List● healthy
Agent-first directory of x402 API services with live uptime monitoring and machine-readable discovery for AI agents (JSON API, OpenAPI 3.1, llms.txt). Per-service endpoints, pricing, response time, and uptime charts. ([API](https://x402-list.com/api/v1/services)) ([OpenAPI](https://x402-list.com/api/v1/openapi.json)) ([llms.txt](https://x402-list.com/llms.txt))
D4.0 monitoring-analytics -
Tersign● healthy
Neutral evidence layer for x402 agent commerce: seller-signed EIP-712 receipts and agent action records, counter-signed into per-seller hash chains on a public ledger, verifiable by anyone without an account, with refunds, deterministic dispute triage, and exportable evidence packs for audits and disputes. One-line verification: `npx tersign verify <receipt-hash> --ledger https://tersign.ai`. ([npm](https://www.npmjs.com/package/tersign)) ([Conformance vectors](https://github.com/tersignhq/evidence-record-conformance)) ([llms.txt](https://tersign.ai/llms.txt))
D4.0 monitoring-analytics -
Agent Forensics● degraded
Agent cost observability for Claude Code. Analyzes JSONL session logs to show per-model cost breakdown, cache efficiency, waste patterns (model misallocation, debug loops, sub-agent sprawl), and estimated savings. Free CLI: `npx agent-forensics analyze`. x402 API: $5 basic / $15 full tier on Base. ([Live](https://api.agentsconsultants.com))
D1.8 monitoring-analytics