APIbase

One MCP endpoint to a live API catalog. AI agents pay per call in USDC (x402 on Base, MPP on Tempo).

View on apibase.pro

Documentation

APIbase.pro

The API Hub for AI Agents — 1398 tools from 404 providers via one MCP endpoint.

What this is

APIbase aggregates 1398 tools from 404 providers into a single Model Context Protocol (MCP) endpoint. Any AI agent can discover, call, and pay for tools through one entry point — no provider-by-provider signup, no API-key juggling, no per-provider billing.

  • MCP endpoint: POST https://apibase.pro/mcp (Streamable HTTP)
  • Tool catalog: GET https://apibase.pro/api/v1/tools (all 1398 tools with JSON schemas)
  • OpenAPI 3.1 spec: GET https://apibase.pro/.well-known/openapi.json
  • Health: GET https://apibase.pro/health/ready

Integrator — AI payment for merchants

Sell to AI agents. One link on your site, and a buyer's agent places and pays the order by itself. USDC settles to your wallet. 0% fee during the pilot.

Merchants connected so far: 1.

Quick start for agents

  1. Connect — POST to /mcp using any MCP-compatible client (Claude Desktop, Cursor, Windsurf, OpenAI SDK, LangChain, CrewAI, Google ADK, Copilot Studio).
  2. Discover — call the discover_tools prompt with a category or task argument. Instead of loading every tool schema into context, fetch only the tools relevant to the current agent goal.
  3. Call — tools/call with any tool name. The multi-stage pipeline handles authentication, idempotency, schema validation, caching, rate limiting, escrow, the provider call, ledger write, and the response.

Authentication

  • Auto-registration: the first request creates agent credentials automatically.
  • API key format: ak_live_<32 hex> in Authorization: Bearer <key>.
  • Alternative: Authorization: Payment <base64url> (MPP) or X-PAYMENT: <base64> (x402).

Payments

Two payment rails are supported in parallel — agents pick the one that matches their wallet.

RailStandardTokenNetworkHeader
x402HTTP 402 (x402 Foundation)USDCBase mainnetX-PAYMENT
MPPMachine Payments Protocol (Stripe/Tempo)USDC.eTempo mainnetAuthorization: Payment

Tool prices: $0.0005–$29.99 per call (90% of tools <= $0.003), depending on upstream cost.

Full payment metadata: https://apibase.pro/.well-known/x402-payment.json

Tool categories (25)

business, crypto, developer, device, education, entertainment, finance, health, infrastructure, jobs, legal, location, logistics, marketing, media, messaging, music, news, podcasts, search, social, space, travel, weather, world.

Discovery artifacts

Source & contact