Infrai Docs — One REST API for every backend service an AI-built app needs

The standard library for AI-built apps. One key, one wallet, one bill for every online service an app needs to run — email, SMS, storage, scheduling, realtime, captcha, PDF, image, analytics and more (the core), plus AI inference as the on-ramp. API host: https://api.infrai.cc

Quickstart

Sign in once at infrai.cc with Google or GitHub (or email-OTP) to get a project key — Google/GitHub sign-up includes a $2 trial.
Set INFRAI_API_KEY, then POST JSON to https://api.infrai.cc/v1/… with a Bearer header — no SDK to install, no signup flow in your code.
AI inference is OpenAI-API compatible: point any OpenAI client at base_url="https://api.infrai.cc/v1". Everything else (the core services) is a plain POST https://api.infrai.cc/v1/… or an MCP tool call.
API base URL: https://api.infrai.cc
Machine-readable: llms.txt
AI discovery: /.well-known/openapi.json

Call it from any language (zero install — just an HTTP client)

Plain HTTPS + a Bearer key: curl, Python (requests), JavaScript (fetch), Go, Rust, Java — any language that speaks HTTP.
MCP server: npx @infrai/mcp-server (stdio / http) → api.infrai.cc
Claude Code skill: /infrai

Error codes

VENDOR_NOT_CONFIGURED (503) — the capability IS implemented, but your project has no vendor key configured. Add a key → it works immediately. Not "unimplemented".
CAPABILITY_NOT_IMPLEMENTED (501) — Infrai hasn't built this capability yet. Adding a key won't help.
Full reference: Error codes in llms.txt

Infrai — Docs