Apibase

APIbase.pro — The API Hub for AI Agents

One MCP + REST endpoint to 1377 tools from 399 providers. No signup, no subscription, no API key to start — pay per call in USDC (x402 on Base or MPP on Tempo).

Latest release: see the tag that equals package.json version; release notes in docs/releases/.

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Quick Start

{

"mcpServers": { "apibase": { "url": "https://apibase.pro/mcp" } } }

That's the Claude Desktop config. Cursor, Windsurf, OpenAI Agents SDK, LangChain, Google ADK, CrewAI, Microsoft Copilot Studio, and plain REST: [apibase.pro/connect](https://apibase.pro/connect).

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For AI Agents

• [llms.txt](https://apibase.pro/llms.txt) — concise LLM context
• [ai.txt](https://apibase.pro/ai.txt) — plain-text agent discovery
• [mcp.json](https://apibase.pro/.well-known/mcp.json) — MCP server metadata
• MCP protocol versions — 2025-11-25, 2025-06-18, 2025-03-26, 2024-11-05, 2024-10-07 (Streamable HTTP on /mcp); revision 2026-07-28 is not served yet (the released SDK does not support it). Current list: protocolVersions in mcp.json
• [openapi.json](https://apibase.pro/.well-known/openapi.json) — OpenAPI 3.1 spec
• [api-catalog](https://apibase.pro/.well-known/api-catalog) — RFC 9727 discovery linkset
• [Roadmap](docs/ROADMAP.md) — planned/shipped changes that affect what an agent can do or see
• API providers: /partners (two ways in)

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For Merchants — Integrator

AI payment for merchants: a merchant gets its own MCP storefront, and a buyer's agent gets a quote and pays in USDC (x402 on Base, MPP on Tempo) straight to the merchant wallet. Non-custodial; fee 0% during the pilot.

• [Overview](https://apibase.pro/integrator) — what it is and how to connect
• [Agent guide](https://apibase.pro/integrator/agent-guide) — step-by-step connection for a merchant's agent
• [WooCommerce plugin](https://apibase.pro/integrator/platforms/woocommerce) — catalog sync and paid-order webhook
• [Demo shop](https://apibase.pro/m/apibase-demo) — a live storefront
• [Integrator guide](https://apibase.pro/integrator/docs) (source: static/integrator/docs.md); operator notes: docs/integrator.md

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For paying agents: what protects your money

• Fixed price before payment — the 402 response states the exact amount and recipient; see payments.
• Payment identifier / idempotency — persist the id and signed payload before you send, re-send after a crash: agent guide.
• Public receipts — https://apibase.pro/r/ .json, see receipts. Attest one on GenLayer at https://apibase.pro/attest/?r= : contract 0x1bD4C0EBC9b365905d4EBC84b944d861499afe6E on Bradbury Phase 2 (chain 4221, test network), client library genlayer-js 2.0.0-rc.2.
• Automatic refunds — for undelivered paid calls and APIbase's fee share of duplicate order payments: pricing.
• Several agents, one budget — buyers.
• Tool definition fingerprint — discover-tools and /api/v1/tools/manifest.

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Integrations & Registries

[Full framework guides →](https://apibase.pro/frameworks)

Registry listings: Smithery · Glama · MCP Registry (io.github.whiteknightonhorse/apibase) · PulseMCP · MPPScan

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Self-Hosting

git clone https://github.com/whiteknightonhorse/APIbase.git && cd APIbase

cp .env.example .env # set POSTGRES_PASSWORD, X402_PAYMENT_ADDRESS, provider keys docker compose -f docker-compose.yml -f docker-compose.prod.yml up -d

Full prerequisites, verification steps, and config reference: docs/self-hosting.md.

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Architecture

Single Node.js/TypeScript API server, PostgreSQL as the append-only financial source of truth, Redis for cache/rate-limiting only, multi-container Docker stack on one Hetzner server. Every tool call runs the same multi-stage pipeline (escrow-first, idempotent, content-moderated, fail-closed on payment, cache and rate limit; the idempotency stage fails open on Redis errors) — dual-rail payments (self-hosted x402 facilitator + MPP), error-code contract, and full container/pipeline detail (exact counts, live): docs/architecture.md.

API lane

Fleet-internal: a prepaid Anthropic API credit lane overflows Fable acceptance reviews that hit a real subscription limit, through one capped wrapper. Lanes, caps, ledger, revocation and the plug-in site: docs/api-credits.md.

License

MIT