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katamaraju

gitlab-mr-reviewer

by katamaraju
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TypeScript

# GitLab MR Reviewer

AI-powered code review for GitLab merge requests. Ships as an MCP (Model Context Protocol) server for use with Kiro IDE, plus a standalone CLI for CI/CD pipelines.

Features

  • GitLab MR Analysis - Fetches MR diffs, threads, and metadata via GitLab API

  • Inline Code Comments - Posts review findings directly on changed lines with severity and category

  • Multi-Model Council - Runs multiple LLMs (via AWS Bedrock) in parallel for consensus-based review

  • Thread Management - Reply, resolve, reopen discussion threads; auto-resolve fixed issues

  • Noise Filtering - Automatically skips lockfiles, generated code, build output

  • Paginated Analysis - Handles large MRs without context overflow

  • Import Resolution - Follows imports to gather context from related files

  • Repository Profiles - Learns project architecture and conventions over time

  • CI/CD Integration - Standalone CLI for automated reviews in pipelines

  • Customizable Standards - Teams can add code-review-standards/ to their repos

Related MCP server: GitLab MCP Code Review

Quick Start

1. Install

npm install -g gitlab-mr-reviewer

2. Configure

Create a .env file or set environment variables:

GITLAB_URL=https://gitlab.com
GITLAB_PAT=glpat-xxxxxxxxxxxx

3. Use with Kiro IDE

Add to your MCP config (~/.kiro/settings/mcp.json):

{
  "mcpServers": {
    "gitlab-mr-reviewer": {
      "command": "mr-review-mcp",
      "args": [],
      "env": {
        "GITLAB_URL": "https://gitlab.com",
        "GITLAB_PAT": "glpat-xxxxxxxxxxxxxxxxxxxx"
      }
    }
  }
}

4. Use via CLI (CI/CD)

mr-review-cli --mr-url "https://gitlab.com/group/project/-/merge_requests/42"
mr-review-cli --project "group/project" --mr 42
mr-review-cli --mr-url $CI_MERGE_REQUEST_URL --dry-run
mr-review-cli --mr-url $CI_MERGE_REQUEST_URL --council

Multi-Model Council Review

Multiple AI models independently review the same MR in parallel, then findings are consolidated by consensus.

Enable Council

COUNCIL_ENABLED=true
COUNCIL_MODELS=claude-sonnet-4,claude-haiku-4.5,nova-pro
AWS_REGION=us-east-1

Environment Variables

Variable

Required

Default

Description

GITLAB_URL

Yes

-

GitLab instance URL

GITLAB_PAT

Yes

-

GitLab PAT (api scope)

REVIEW_LABEL

No

ai-review

Label added to reviewed MRs

COUNCIL_ENABLED

No

false

Enable multi-model review

COUNCIL_MODELS

No

claude-sonnet-4,claude-haiku-4.5,nova-pro

Models to use

AWS_REGION

No

us-east-1

AWS region for Bedrock

BEDROCK_MAX_TOKENS

No

8192

Max tokens per model

REVIEW_MODE

No

deep

deep (clone) or quick (diff only)

Architecture

src/
  index.ts              - Library exports
  mcp-server.ts         - MCP server class (tool implementations)
  mcp-server-stdio.ts   - STDIO transport + tool definitions
  cli-review.ts         - CLI entrypoint for CI/CD
  cache/                - MR data caching
  config/               - Retry and runtime configuration
  core/                 - Multi-model council, verification, pipeline
  modules/              - GitLab operations, analysis, comments
  types/                - TypeScript type definitions
  utils/                - Helpers (validation, errors, parsing)
power/
  POWER.md              - Kiro Power manifest
  mcp.json              - MCP server configuration
  steering/             - Review guidance files

Development

git clone https://github.com/katamarajub/gitlab-mr-reviewer.git
cd gitlab-mr-reviewer
npm install
npm run build

License

MIT

This server cannot be installed

A
license - permissive license
Not graded
quality - not tested
C
maintenance

How are these scores calculated?

Maintenance

–Maintainers
–Response time
–Release cycle
–Releases (12mo)
Commit activity

Resources

Unclaimed servers have limited discoverability.

Looking for Admin?

If you are the server author, to access and configure the admin panel.

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