# x402Hub

> Neutral, verified Trust Scores and discovery for x402 API and MCP services. Find and compare tools for AI agents by trust, price, and network.

x402Hub collects x402 API and MCP services from public sources (Coinbase Bazaar),
**independently verifies** each one (HTTPS, x402 protocol conformance, real usage),
and ranks them by a **Trust Score**. What Bazaar does not provide = a neutral,
verified Trust Score and filtering by it.

## Stats (as of build)
- Tracked services: 200
- Verified (x402Hub self-check): 148
- Data source: Coinbase Bazaar Discovery API

## For AI Agents — MCP server (recommended)
- Endpoint: https://x402.chain-ops.xyz/mcp (Streamable HTTP transport)
- Tool: search_services — filter x402 services by Trust Score, price, verification, network.
- Manifest: https://x402.chain-ops.xyz/.well-known/mcp.json
- Free to use. Rate limit: 60 requests/min per IP.

## For AI Agents — Discovery API (machine-readable)
- Search: https://x402.chain-ops.xyz/api/discovery/search?q={query}&minTrust={0-100}&maxPrice={usdc}&type={api|mcp}&verified={true|false}
- Service detail: https://x402.chain-ops.xyz/api/discovery/services/{id}
- Agent card: https://x402.chain-ops.xyz/.well-known/agent-card.json

Example: "OCR API with trust score over 80"
  → https://x402.chain-ops.xyz/api/discovery/search?q=OCR&minTrust=80

## Human pages
- Home (ranking): https://x402.chain-ops.xyz/
- Search: https://x402.chain-ops.xyz/search

## Top services by Trust Score
- [Exa](https://x402.chain-ops.xyz/services/exa) — Trust 97 (A+), base
- [Otto AI](https://x402.chain-ops.xyz/services/otto-ai) — Trust 95 (A+), base
- [BlockRun.AI](https://x402.chain-ops.xyz/services/blockrun-ai) — Trust 95 (A+), base
- [BlockRun.AI](https://x402.chain-ops.xyz/services/blockrun-ai-17) — Trust 94 (A+), base
- [Otto AI](https://x402.chain-ops.xyz/services/otto-ai-2) — Trust 93 (A+), base
- [BlockRun.AI](https://x402.chain-ops.xyz/services/blockrun-ai-3) — Trust 93 (A+), base
- [Otto AI](https://x402.chain-ops.xyz/services/otto-ai-6) — Trust 92 (A+), base
- [Otto AI](https://x402.chain-ops.xyz/services/otto-ai-3) — Trust 91 (A+), base
- [Otto AI](https://x402.chain-ops.xyz/services/otto-ai-4) — Trust 91 (A+), base
- [Otto AI](https://x402.chain-ops.xyz/services/otto-ai-5) — Trust 91 (A+), base

## Notes
- Trust Score = x402Hub's own algorithmic verification score (not user reviews).
- Data refreshed hourly.