API infrastructure
for AI Agents
The protocol-agnostic API marketplace. Discover, connect, and call any API in 5 minutes — not days. MCP, REST, and whatever comes next.
Trusted by AI agents and developers
Try it live
No signup required. Pick an API, hit Run.
/api/v1/apis?q=REST Countries&limit=1One Token. Any API.
No per-provider credentials. No individual SDK installations. Just one apitree token.
import { ApitreeClient } from '@apitreedev/sdk';
const apitree = new ApitreeClient('nxs_live_xxx');
// Call any API through apitree
const weather = await apitree.call('open-meteo-weather');
const rates = await apitree.call('exchange-rates');
// Batch: call multiple APIs at once
const results = await apitree.batch([
{ api: 'exchange-rates' },
{ api: 'restcountries', path: 'all' },
{ api: 'cat-facts' },
]);
// Check your usage
const usage = await apitree.getUsage();AI Agent Ready
15 MCP tools + 2 prompts for search, call, batch, compare, health scoring, cost optimization, and fine-tuning. AI Agents discover and invoke APIs automatically.
Built-in Resilience
Circuit breakers, retry with exponential backoff, 15s timeout, and response caching. Your calls always land.
Unified Billing
One credit balance for all APIs. Real-time usage tracking, CSV/JSONL export, cost forecasting.
Self-Healing Gateway
Auto-detects schema changes, maps renamed fields, and health-checks every 15 minutes.
One token, one SDK, every API. AI Agents discover and call APIs automatically through MCP — or use our REST gateway directly.
// Claude Code / Cursor — just ask naturally
// "Find an API for bank account balance"
// apitree MCP Server auto-handles:
search_apis({
intent: "bank account balance query",
category: "financial"
})
// Returns: matched API with 0.94 similarity
// → call_api() with your apitree token
// → Done. 5 minutes, zero docs.AI-first developer experience
apitree is the API infrastructure layer that AI Agents call by default. One token unlocks every API in the marketplace — your agent handles the rest.
APIs were built for humans. The future is built for Agents.
The entire API ecosystem — discovery, integration, operations — was designed around human developers. apitree reimagines it all for a world where AI Agents are the primary consumers.
Everything AI Agents need to call APIs at scale
Built from the ground up for the MCP era — where AI Agents are the primary API consumers.
Latest thinking
How AI Agents choose APIs
The 4-factor ranking algorithm behind intent matching — and why Tool Definition quality beats catalog size.
apitree vs RapidAPI
Agent-native vs developer-native: same market, fundamentally different architecture.
153 APIs, no key needed
Weather, crypto, NASA, Wikipedia — all callable right now through apitree proxy.
APIs reimagined. Available today.
Start connecting APIs with the best AI-native developer experience.