
Instagit
io.github.instagitaiPublished by GitHub account instagitaiv0.1.5Updated Oct 25, 2026
MCP server for Instagit — AI-powered Git repository analysis for coding agents
Overview
Instagit is a local MCP server that lets a coding agent ask AI-backed questions about any Git repository and get answers grounded in its source code.
- What you can do
- Analyze a Git repository: submit a repository URL, owner/repo shorthand or public Git URL with a prompt and optional branch, commit or tag, and get an AI analysis of the codebase, such as architecture explanations, security reviews, migration plans or integration guidance, with file and line citations.
- When to use it
- Useful when an agent must integrate with an unfamiliar library, migrate between versions, debug across repository boundaries, compare candidate libraries, or onboard to a new codebase and needs answers grounded in the actual source rather than training data.
- Requirements
- Runs locally via npx with Node.js 18 or later. No API key is required: an anonymous token is auto-registered and stored in the user's home directory. An optional INSTAGIT_API_KEY from instagit.com raises rate limits and speeds up analysis; INSTAGIT_API_URL can point to a custom endpoint. Network access to the Instagit service is needed.
Installation
In SourceWeft
- Open Instagit in the dashboard and add it to a workspace.
- Enable the server for the chats that should use its tools.
Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.
Other MCP clients
Follow the launch instructions in the repository.
README
Instagit
Let Your Agents Instantly Understand Any GitHub Repo
An MCP server that gives coding agents instant insight into any Git repository — no guessing, no hallucination.
Quick Start
Agentic Install
Share the following with your agent to get started:
Manual Install
Add to your MCP client configuration:
Works with Claude Code, Claude Desktop, Cursor, OpenClaw, and any MCP-compatible client. The @latest tag ensures you always get the most recent version.
Why
Agents that integrate with external libraries are flying blind. They read docs (if they exist), guess at APIs, and hallucinate patterns that don't match the actual code. The result: broken integrations, wrong function signatures, outdated usage patterns, hours of debugging.
When an agent can actually analyze the source code of a library or service it's integrating with, everything changes. It sees the real function signatures, the actual data flow, the patterns the maintainers intended. Integration becomes dramatically easier and less error-prone because the agent is working from ground truth, not guesses.
What Agents Can Do With This
- Integrate with any library correctly the first time — "How do I set up authentication with this SDK?" gets answered from the actual code, not outdated docs or training data. Your agent sees the real constructors, the real config options, the real error types.
- Migrate between versions without the guesswork — Point your agent at both the old and new version of a library. It can diff the actual implementations and generate a migration plan that accounts for every breaking change.
- Debug issues across repository boundaries — When a bug spans your code and a dependency, your agent can read both codebases and trace the issue to its root cause — even into libraries you've never opened.
- Generate integration code that actually works — Instead of producing plausible-looking code that fails at runtime, your agent writes integration code based on the real API surface: actual method names, actual parameter types, actual return values.
- Evaluate libraries before committing — "Should we use library A or B?" Your agent can analyze both implementations, compare their approaches to error handling, test coverage, and architectural quality, and give you a grounded recommendation.
- Onboard to unfamiliar codebases in minutes — Point your agent at any repo and ask how things work. It answers from the code itself, with file paths and line numbers, not from memory that may be months out of date.
Features
- Agent-native context — Purpose-built for coding agents. Returns the exact context an AI needs to understand, modify, and reason about code.
- Architectural truth — Goes beyond keyword search. Understands how components connect, why decisions were made, and where the real complexity lives.
- Any repo, any scale — From weekend projects to massive monorepos. Public and private repositories, any Git host.
- Exact source citations — Every claim traced back to specific files and line numbers. No hallucination, no hand-waving.
Configuration
Environment Variables
Authenticated Usage
Sign up at instagit.com for higher rate limits and faster analysis:
Anonymous Usage
No API key required — the server automatically registers an anonymous token on first use. Anonymous tokens are stored in ~/.instagit/token.json and shared with the Python MCP server.
Tool: ask_repo
Analyze any Git repository with AI.
Parameters:
Example prompts:
- "Explain the architecture and main components"
- "Review the authentication implementation for security issues"
- "How would I add a new API endpoint following existing patterns?"
- "What would it take to upgrade from React 17 to 18?"
Requirements
- Node.js 18+
License
MIT — Copyright (c) 2026 Instalabs, LLC
Learn more at instagit.com
Source: README.md at commit 13f4d3e
Tools
0Version history
1- v0.1.5LatestSep 16, 2026
Score
50% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
- Reached in the last 30 days25 pts
Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.
- Auth declared10 pts
Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.
- Tools listed15 pts
Answer tools/list without a credential, or ship a package that starts in a sandbox without one.
- DescriptionRequired15 pts
- Logo10 pts
- Documentation15 pts
- License10 pts