APIbase.pro — The API Hub for AI Agents

Search flights, compare prices, track status, trade prediction markets — all via MCP. One endpoint. 33 tools. 5 providers. Pay per call.

Live Platform | Tool Catalog | MCP Endpoint | Health

What is APIbase?

Production MCP server — universal API hub for AI agents. 45+ tools across travel, finance, e-commerce, weather, and more. Search flights (Amadeus, Sabre GDS), trade prediction markets (Polymarket), track crypto, check weather — with more providers shipping regularly. One endpoint, pay per call via x402 USDC micropayments. Auto-registration, zero setup. Covers the most popular API categories agents actually need: travel, financial data, local services, e-commerce, and marketing.

Built for AI agents, not humans. Every tool is designed for autonomous discovery, authentication, and invocation via the Model Context Protocol.

Why agents use APIbase

• One MCP endpoint — https://apibase.pro/mcp connects to 5 providers
• Real-time flight search — Amadeus + Sabre GDS, 500+ airlines, real prices
• Pay per call — x402 micropayments (USDC), no subscriptions, no minimums
• Auto-registration — agents get API keys instantly, zero human setup
• Production-grade — 13-stage pipeline, escrow payments, idempotent operations

Quick Start (30 seconds)

For Claude Desktop / Cursor / Windsurf

Option A — Direct connection (Streamable HTTP):

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

Option B — Via npm package (stdio bridge):

{
  "mcpServers": {
    "apibase": {
      "command": "npx",
      "args": ["-y", "apibase-mcp-client"]
    }
  }
}

For any MCP-compatible agent

MCP Endpoint:   https://apibase.pro/mcp
Tool Catalog:   https://apibase.pro/api/v1/tools
Discovery:      https://apibase.pro/.well-known/mcp.json

Register and get your API key

POST /api/v1/agents/register
Content-Type: application/json

{"agent_name": "my-agent", "agent_version": "1.0.0"}

Returns api_key (ak_live_...) and agent_id. Store the key securely — it is shown once.

Call tools via MCP

Connect to https://apibase.pro/mcp using the MCP protocol (Streamable HTTP transport). Authenticate with Authorization: Bearer ak_live_....

All tool calls follow the MCP tools/call method.

Call tools via REST

POST /api/v1/tools/{tool_id}/call
Authorization: Bearer ak_live_...
Content-Type: application/json

{"param1": "value1", "param2": "value2"}

Flight Search Example

Ask your AI agent:

"Find the cheapest flights from New York to London next week"

The agent calls amadeus.flight_search and gets real-time prices from 500+ airlines:

{
  "origin": "JFK",
  "destination": "LHR",
  "departure_date": "2026-03-20",
  "adults": 1,
  "travel_class": "ECONOMY",
  "max_results": 5,
  "currency": "USD"
}

Returns itineraries with prices, airlines, stops, duration, baggage info — ready for the agent to compare and present.

Available Tools (33)

Amadeus — Flight Search & Travel Data (7 tools)

Real-time flight data from the world's largest GDS. Search flights across 500+ airlines, check live status, find airports.

Sabre GDS — Flight Search & Travel Data (4 tools)

Alternative flight search via Sabre Global Distribution System. Cross-reference prices with Amadeus for best deals.

Polymarket — Prediction Markets (11 tools)

Search, analyze, and trade on prediction markets. Real-time odds, order books, and trading via CLOB.

Hyperliquid — DeFi Perpetuals (6 tools)

On-chain perpetual futures exchange. Market data, order books, positions, and account info.

AsterDEX — DeFi Perpetuals (4 tools)

Decentralized perpetual exchange on Asterism. Market data, order books, and candlestick charts.

Payment

No subscriptions. No minimums. Pay only for what you use.

Authentication

Response Format

All responses include:

• X-Request-ID header for tracing
• JSON body with tool-specific data field
• Standard error codes on failure

Rate Limits

• Per-agent, per-tool token bucket
• Global tier limits: free (20 req/s), paid (100 req/s)
• 429 with Retry-After header on limit exceeded
• Redis-backed, fail-closed

Error Codes

MCP Discovery

GET /.well-known/mcp.json

{
  "name": "APIbase",
  "protocol": "MCP",
  "version": "1.0",
  "mcp_endpoint": "https://apibase.pro/mcp",
  "authentication": "x402"
}

Integrations

Connect APIbase to any AI platform:

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

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

{
  "mcp": {
    "servers": {
      "apibase": {
        "type": "http",
        "url": "https://apibase.pro/mcp"
      }
    }
  }
}

{
  "experimental": {
    "modelContextProtocolServers": [
      {
        "transport": {
          "type": "streamable-http",
          "url": "https://apibase.pro/mcp"
        }
      }
    ]
  }
}

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

openclaw config set provider.mcpServers.apibase.url "https://apibase.pro/mcp"

Architecture

• 13-stage pipeline: AUTH → IDEMPOTENCY → SCHEMA_VALIDATION → CACHE → RATE_LIMIT → ESCROW → PROVIDER_CALL → LEDGER → RESPONSE
• Fail-closed: Redis down = reject all requests, no silent degradation
• Idempotent: same request + same key = same result, no double charges
• Observable: Prometheus metrics, Grafana dashboards, structured logging

Self-Hosting

git clone https://github.com/whiteknightonhorse/APIbase.git
cp .env.example .env    # configure secrets
docker compose -f docker-compose.yml -f docker-compose.prod.yml up -d

Requires: Docker, PostgreSQL 16, Redis 7.2, Node.js 20.

16 containers: API, Worker, Outbox, PostgreSQL, Redis, Nginx, Prometheus, Grafana, Loki, Promtail, Alertmanager, and exporters.

License

MIT