# Circuit Studio

> Draw analog audio circuits and play through them. An open MCP server lets agents build circuits, simulate them with the engine the app plays through, measure responses, draw schematics, and tune part values (fit to a recording, optimize to a target response, sensitivity).

## Start here

- [Agents & API](https://circuit.synthcity.org/agents/): connect, tools, a worked example, limits.
- [Hosted tool schemas](https://circuit.synthcity.org/agents/tools.json): the connected server's tools/list is authoritative.

## Hosted connection

Streamable HTTP at https://circuit.synthcity.org/api/mcp. No account or key. Each call is stateless: pass the circuit inline (netlist text, a gallery name, or a share link https://circuit.synthcity.org/#c=…); every edit returns the updated circuit (circuit.cir and circuit.link) for the next call. Audio and large files come back as links that expire after 24 h.