sigrix-mcp

Publish prompt, persona and skill listings to Sigrix from the AI client you already write in — Claude Code, Claude Desktop, Cursor, or any MCP client.

A thin server over Sigrix's seller API. It carries no model calls, no validation of its own and no secret beyond your token. Every submission goes through Sigrix's moderation queue; nothing goes live from here.

Install

uvx sigrix-mcp        # or: pipx install sigrix-mcp

Python 3.11 or newer.

Related MCP server: stendium-mcp

Get a token

Sign in to Sigrix, open Account → Settings, and create a Seller API token. It is shown once. The token can create, edit and submit your own drafts for review, and nothing else on your account: it cannot approve or publish, and it opens no other page or API. Revoke or regenerate it from the same card at any time; the old token stops working on the next request.

Give it to the server as SIGRIX_SELLER_TOKEN.

Configure your client

Claude Code

claude mcp add sigrix -e SIGRIX_SELLER_TOKEN=sgx_... -- uvx sigrix-mcp

Claude Desktop (claude_desktop_config.json) and Cursor (.cursor/mcp.json)

{
  "mcpServers": {
    "sigrix": {
      "command": "uvx",
      "args": ["sigrix-mcp"],
      "env": { "SIGRIX_SELLER_TOKEN": "sgx_..." }
    }
  }
}

SIGRIX_BASE_URL is optional and defaults to https://sigrix.io.

What it does

Tools:

Prompts: draft_prompt_listing, draft_persona_listing, draft_skill_listing — the brief a good listing of each type is written to. Give one an idea and it drafts, checks and asks you before submitting.

The server pins the seller API version it was written against and refuses to run against a platform that serves another one; upgrade when it tells you to.

What it does not do

It does not publish anything. A submitted listing is pending_review until a moderator approves it, and you can keep editing it in the web wizard at the edit_url every tool returns. It does not read your purchases or anyone else's listings, and it never sends your token anywhere but the Authorization header of requests to the base URL you configured.

Development

pip install -e ".[dev]"
ruff check . && pytest

scripts/sync_schemas.py <base-url> refreshes the API schema the tool descriptions are derived from.

Licence

Apache-2.0. The Sigrix name and logo are not covered by the licence — see NOTICE.