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Documentation

Ship on Flatkey with official API shapes.

Quickstarts for the OpenAI-compatible router, Anthropic-native workflows, tool integrations, model catalog, governance and billing.

OpenAI
Compatible base URL
Anthropic
Native request shape
Tools
Codex and Claude Code

Start

Use one key with existing SDKs

Point your client at the Flatkey router endpoint, keep standard request formats, and manage model routing from the console.

Integrations

Built for coding agents and app builders

Docs cover Codex, Claude Code, Cursor, Cline and browser playground workflows so teams can validate before changing production traffic.

Operations

Governance and billing stay visible

Track keys, quotas, usage, recharge records and team policy from one product surface.