nikolay-e/diffctx

Overview

Smart git diff context for LLMs and AI agents selects the minimal code fragments needed to understand a change under a token budget. Deterministic, local, MCP server included. Also exports a full codebase to YAML/JSON/MD.

Best for

Best for
Developers who need token-efficient git context for AI coding agents

Use cases

• Feed minimal diff snippets to an LLM or agent
• Reduce token spend when analyzing code changes
• Export a snapshot of the codebase for external tools

How to use

Install

npx diffctx . --diff HEAD~1             # npm wrapper over the native binary

Tested with

Claude Desktop, Claude Code, Cursor, Windsurf, Continue, VS Code, ChatGPT

Notes

Smart git diff context for LLMs and AI agents selects the minimal code fragments needed to understand a change under a token budget. Deterministic, local, MCP server included. Also exports a full codebase to YAML/JSON/MD.

3 stars on GitHub. Last updated 2026-09-03. Licensed Apache-2.0.

Use cases

• Feed minimal diff snippets to an LLM or agent
• Reduce token spend when analyzing code changes
• Export a snapshot of the codebase for external tools

Pros

• Deterministic and runs locally without network dependency
• Token budget control keeps context small and focused
• Includes MCP server for agent integration

Cons

• Very low adoption so far, limiting community support
• No cloud or hosted option, requires local setup
• Feature set narrow, primarily diff context and export

Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.