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selvedge

Cursor MCP setup

Selvedge works with any compatible agent. This page covers one optional client integration; see general MCP and CLI setup for other agents.

Cursor speaks MCP natively, so wiring in Selvedge takes one config file. Once it’s connected, the agent can call log_change as it works and prior_attempts before it edits.

Before you start

Section titled “Before you start”

Install uv, then install the Selvedge CLI and MCP server:

Terminal window
uv tool install --upgrade selvedge

The MCP config below launches the server with uvx instead of a bare selvedge-server, so the package can be fetched on demand — the editor still needs to find uv installed. Prefer the global binary? Swap uvx --from selvedge selvedge-server for selvedge-server.

Add the MCP server

Section titled “Add the MCP server”

Add this to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project only):

{
  "mcpServers": {
    "selvedge": {
      "command": "uvx",
      "args": ["--from", "selvedge", "selvedge-server"]
    }
  }
}

Prefer not to touch config files? selvedge setup detects Cursor and writes this for you (with a .bak first).

Tell your agent when to call it

Section titled “Tell your agent when to call it”

Selvedge captures decisions when your agent calls it. Install the instruction block into your project’s .cursorrules:

Terminal window
selvedge prompt --install .cursorrules

It’s also a copy-paste block on the site: the Selvedge agent prompt block.

Verify

Section titled “Verify”

Open Cursor Settings → MCP. selvedge should be listed with its 8 tools. Or run selvedge watch in a terminal and make a change — the event prints within a second.

If it doesn’t connect

Section titled “If it doesn’t connect”

These configs run the server with uvx, which ships with uv — so the one prerequisite is uv on the PATH Cursor launches with (curl -LsSf https://astral.sh/uv/install.sh | sh). Prefer a global install instead? pip install selvedge and set command to selvedge-server.

Next

Section titled “Next”