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.
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Cloud World Model API● healthy
Multi-cloud infrastructure simulation with RL, chaos, and AI analysis endpoints; x402 pay-per-call on Solana mainnet USDC and Base, no signup required.
B7.6 devtools base $0.0030 USDC / call -
Agent API Listings● healthy
Generates ready-to-submit mpp.dev and x402-list.com listing packages from a caller-supplied OpenAPI spec. $0.20 per package.
B7.3 devtools base $0.2000 USDC / call -
Buyer-Readiness Linter● healthy
Lints a paid x402/MPP API endpoint for agent-buyer readiness and returns actionable findings. $0.10 per lint.
B7.3 devtools base $0.1000 USDC / call -
Listing Drift Watchdog● healthy
Compares a live 402 challenge (price, network, pay-to) against CDP Bazaar, x402scan, and MPPScan directory listings and flags drift. $0.10 per check.
B7.3 devtools base $0.0100–$0.1000 USDC -
PayBox Agent Tools● healthy
Deterministic pay-per-call utilities for prompt-injection screening, canonical JSON profiling, structural fingerprints, and tabular data-quality summaries. Each endpoint returns structured JSON for 0.01 USDC.
B6.4 devtools base $0.0100 USDC / call -
SAP MCP Server● healthy
Hosted Solana-native MCP gateway for Synapse Agent Protocol operations, Solana protocol tools, SNS identity, x402/pay.sh payments, and agent execution workflows.
C+5.9 devtools solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp -
Hoodi ETH Merchant● healthy
Buy Hoodi ETH with Base or Solana USDC at $0.025 per testnet ETH
C5.0 devtools base $0.1300 USDC / call -
Toolbelt402 x402 Endpoint Validator● healthy
Validate any x402 paid endpoint: checks the 402 response, PAYMENT-REQUIRED header, payTo, asset, network and price. Built for agents and x402 sellers debugging listings. Pay per call in USDC on Base, no API key.
C+6.0 devtools base $0.0100 USDC / call -
Toolbelt402 SEO/OG Metadata Extractor● healthy
Fetch a URL and return title, description, canonical, Open Graph and Twitter card metadata as JSON for SEO audits and link previews by agents. Pay per call in USDC on Base via x402, no API key.
C+6.0 devtools base $0.0020 USDC / call -
Toolbelt402 URL to Markdown● healthy
Pay-per-call URL→clean Markdown for AI agents. x402 USDC on Base $0.003. No API key.
C+6.0 devtools base $0.0030 USDC / call -
OutageDesk Status Copy API● healthy
Status-page / incident comms copy for SaaS on-call agents. Free /v1/templates; /v1/compose 0.05 USDC via x402 on Base. Educational templates, not legal advice.
C+6.0 devtools base $0.0500 USDC / call -
Toolbelt402 Seller Kit● healthy
x402 Seller Kit ZIP $9 USDC on Base.
C+6.0 devtools base $9.0000 USDC / call -
EU Compliance Desk GPSR warnings● healthy
EU GPSR warning lookup for agents. x402 USDC on Base. Educational compliance text, not legal advice.
C+6.0 devtools base $0.0100 USDC / call -
Utilia Solana Priority Fees● down
Pay-per-call Solana priority-fee estimates for transaction-building agents. Returns recent quantiles and supports repeated writable account keys for localized bidding. x402 v2 exact payment costs $0.002 USDC on Solana mainnet, with no API key or account.
D1.9 devtools solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp $0.0020 USDC / call