API & MCP Documentation

Connect to the Unbound AI API or install Unbound MCP. Learn API authentication, model IDs, spending caps and browser-based agent login.

AI API Quickstart & Authentication

Use Bearer API key authentication with the OpenAI-compatible Unbound API. Discover model IDs and send your first text request.

Test your Unbound API connection with a public simulation key. Fixed responses, streaming and zero charges; no account or deposit required.

Interactive Unbound setup for Codex, Claude Code and OpenCode: enter your key, choose a default model and launch your coding app.

Configure the local Unbound MCP stdio client, approve account access in a browser and complete login using a five-character code.

Understand USD and token caps, request reservations, released funds and confirmed crypto deposits for the Unbound API.

Explore GLM-5.3, DeepSeek V4.1 Flash and MiniMax M3.1 Flash on Unbound. Compare models, API IDs, parameter sizes and token prices.

Compare input, output and cached token prices for GLM, DeepSeek and MiniMax. Pay as you go with USD or token spending caps on every API key.