grai-gate MCP server

Deterministic cadence scoring and cryptographic seal verification for AI-generated drafts, exposed as a Model Context Protocol server over stdio.

No API key needed for scoring. The gate is a pure Python scorer with no dependencies outside the standard library.

Install

uvx --from grai-mcp grai-gate-mcp

Or with pip:

pip install grai-mcp
grai-gate-mcp

Configure your client

Claude Desktop, Cursor, Cline, Windsurf and anything else that reads mcpServers:

{
  "mcpServers": {
    "grai-gate": {
      "command": "uvx",
      "args": ["--from", "grai-mcp", "grai-gate-mcp"]
    }
  }
}

Tools

grai_score_draft runs entirely offline. If the local scorer cannot load, it falls back to the hosted endpoint.

Example

{"name": "grai_score_draft", "arguments": {"text": "Your draft goes here."}}

The response carries the score, the CV, the rules that failed, and upgrade links. A score of 85 or higher passes.

What the gate checks

Sentence-length variance (CV), contrastive negation, epiphany openers, corporate slop words, em dashes, structural monotony, and five other deterministic rules. Same engine as the grai-gate CLI, so scores match between the CLI and the MCP server.

Links

• Product: https://grai.page
• Source: https://github.com/adrianpeticila/grai
• License: MIT