Diff MCP server
Character-precise unified diff + patch application + patch parsing.
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If you have run it, two minutes of your experience saves the next person an afternoon.
Diff tools (3, 2 write)
write = sends, deletes, buys or postsRead from the package source without running it. The installed server may list more.
apply_patchwrite actionApply a unified-diff patch to an original string. Returns success/false plus the patched text. Returns success:false with a reason when the patch can't apply cleanly (e.g. context drift).
parse_patchwrite actionParse a unified-diff patch and return its structure (file pairs, hunk count, addition/deletion counts per file). Useful for summarizing a patch before deciding whether to apply it.
unified_diffGenerate a unified diff between two strings. Returns the patch text plus counts of additions / deletions / unchanged lines. Use this when an LLM needs to produce a code review or a patch the user (or a tool) will then apply.
Public scan report
scanner v0.1.9 · 2026-09-27 · same rubric, same numbers if you re-run it
- Code scan3 source files scanned25/25
- –Live reliabilityno gateway calls yet and no remote to proben/a
- –Tool poisoningtools not inspected (local package is not executed); not countedn/a
- Auth qualitylocal package, no credentials required12/15
- Maintenancelast push 29 days ago15/15
- Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
How Diff compares
Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.
- Safety score
- 92/100
- higher than 90% of 48,273 servers
- Tools
- 3
- the typical server has 7
- Tools that change things
- 67%
- typical: 0%. Fewer write tools means less an agent can break
What its tools let an agent do: 1 read · 1 change · 1 run or deploy
Install Diff in Claude Code, Cursor or VS Code
Runs npx -y @mukundakatta/diff-mcp on your machine. Read the scan report first; the gateway never runs local packages.
claude mcp add diff-mcp -- npx -y @mukundakatta/diff-mcp
What the publisher says
From the Diff repository's README, as published. We do not edit it. Read it on GitHub
mcp-stack
Fourteen small MCP servers for everyday LLM / RAG / agent work. Each ships independently on npm, listed in the official MCP Registry, and is callable from Claude Desktop, Cursor, Cline, Windsurf, Zed, and any other MCP-compatible client.
RAG / agent helpers
Reliable transforms LLMs reach for tools instead of imagining
Sibling libraries
The first four wrap or re-implement logic from the user's Rust + Python work:
ragdrift-py (PyPI) — five-dimensional drift detection
- ragdrift (crates.io) /
stopstream, citecite, ragmetric — pure-Rust crates from the rust-llm-stack workspace
- embedrank, promptbudget,
The MCP servers are independent: they implement the logic they need in plain JavaScript so installing them doesn't pull a Rust toolchain.
Install (any of them)
Add to your MCP client config. Example for Claude Desktop:
Shortened. The full README is on GitHub.
Nothing above is checked by us. What we check is on the safety report.
Diff: common questions
- Is Diff MCP server safe?
- Yes, by our scan: it is graded A (92/100). Read the Diff safety report
- How do I install Diff?
- It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
- Does Diff need an API key?
- Not as far as the registry entry and our scan can tell: no credentials are declared or required.
- Is Diff maintained?
- The last commit was 65 days ago (2026-08-29). The latest release is v0.1.0.
- How does Diff compare with other MCP servers?
- safety score 92/100 (higher than 90% of 48,273 servers); tools 3 (the typical server has 7); tools that change things 67% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.