Local first
The server runs on your Mac, so agent tools keep working against your real project files instead of a hosted sandbox.
Use Cursor's models with any harness
-
OpenCode
-
Codex
-
VS Code
-
Cline
-
Kilo Code
-
pi
API for Cursor is an open source native MacOS app that leverages Cursor's Agent SDK to produce a standard OpenAI compatible API. Import Composer as a model into OpenCode, Codex, or your own harness with a single click.
91 - Star the repo
OpenAI-compatible
Chat Completions, Responses, and Models endpoints are exposed at a standard local /v1 base URL.
One-click agent setup
Configure Composer for OpenCode, Codex, VS Code, Cline, Kilo Code, and pi from a single Agent Setup panel.
Works where agents already run
Set up in your favorite coding agents.
Start the local API, then wire Composer into the agents you already use.
Each one keeps its own shell loop and your real project files — only the model
route points at 127.0.0.1.
OpenCode
Composer models ready
Codex
Custom provider ready
VS Code
Model metadata ready
Cline
Provider profile ready
Kilo Code
Provider profile ready
pi
Custom models ready
OpenAI-compatible
A standard local /v1 surface.
Point any OpenAI-compatible client at the local base URL and the familiar endpoints are right there — Models, Chat Completions, and Responses.
In your editor
OpenCode, building with Composer 2.5.
Composer 2.5 shows up as a normal model in OpenCode — “Build · Composer 2.5 Cursor API via Standard Agents” — while the agent keeps its local filesystem and shell tools. Same flow in Codex and any tool with a custom provider.
Download for macOS Free local app
Standard Agents
What is Standard Agents?
Standard Agents is an open standard for creating domain-specific agents that can be distributed, composed, and run across different harnesses. API for Cursor is one example: a local app that turns Cursor's Agent SDK into a standard model API.