Delimit MCP Server

@delimit-ai

Basic information

About Delimit MCP Server

The merge gate for AI-written code, with signed, replayable attestation. Works across Claude Code, Codex, Cursor, and Gemini CLI.

#openapi#api-governance#breaking-changes#mcp #claude-code #codex #gemini #cursor#semver#linting

Delimit MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "delimit": {
      "type": "stdio",
      "command": "python3",
      "args": [
        "~/.delimit/server/ai/server.py"
      ],
      "cwd": "~/.delimit/server",
      "env": {
        "PYTHONPATH": "~/.delimit/server"
      }
    }
  }
}

Delimit MCP Server tools

Tool list not available yet

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We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is Delimit?

Delimit is a merge gate for AI-written code that wraps any AI coding assistant (Claude Code, Codex, Cursor, Gemini CLI) with a governance chain. It runs gates, records changes, and signs replayable, HMAC-signed attestations for every merge. Designed for teams that want to govern and audit AI-assisted code contributions.

How to use Delimit?

Install via npx delimit-cli. For a full merge gate, run delimit wrap -- <ai-command> to pipe any AI invocation through signed governance. For a zero-config safety gate, run delimit check on staged or modified files. Use delimit init to set up a merge-gate config. No account or API keys are required for basic usage. Commands like delimit lint, delimit diff, delimit simulate, and delimit scan provide specific gate capabilities.

Key features of Delimit

Signed, replayable attestations (HMAC-SHA256) per merge
Zero-config PR safety gate (delimit check)
Wraps any AI coding assistant with a governance chain
Cross-model context persistence (memory, ledger)
Offline-verifiable receipts with public replay URLs
Multi-model deliberation and autonomous builds (delimit think, delimit build)

Use cases of Delimit

Protect an API from breaking changes before each merge
Detect spec drift and unreviewed changes automatically
Run governance gates on every pull request via a GitHub Action
Gate all AI-assisted invocations across different CLIs and models
Keep decision context and task lists across sessions and AI assistants

Frequently asked questions

What does `delimit wrap` do?

It pipes an AI-assisted CLI command through a governance gate: snapshots the git diff, runs lint and tests, HMAC-signs an attestation, and emits a replay URL. Advisory by default; `--enforce` blocks on policy violations.

Does Delimit require an account or API keys for basic usage?

No. Commands like `delimit check`, `delimit scan`, `delimit init`, and `delimit wrap` work without any account, API keys, or configuration files. Some features (e.g., `delimit deliberate` with custom models) may require a key.

How are receipts verified?

Receipts are offline-verifiable: run `npx delimit-cli seal-verify <receipt.json>` or open the unique replay URL at `delimit.ai/att/<id>`. No external service needed for verification.

What is the difference between `delimit check` and `delimit wrap`?

`delimit check` is a zero-config PR safety gate that applies deterministic checks (breaking API changes, leaked secrets) to staged or modified files. `delimit wrap` is a full governance gate for AI-assisted invocations that produces a signed, replayable attestation with git diff, gate results, and a public URL.

What does the `--record` option do on `delimit check`?

It writes a content-pinned record of the check to `.delimit/records/check-<ts>.json`. This record is the precursor to a signed, replayable Seal attestation.

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