Fast Diff MCP Server

Compare two text blocks quickly and return unified diff output.

Source

third_party_registry

Updated

2026-07-11

// securityCaution

Runs locally
Open source

Running security audit…

Credentials
Network egress
Code execution
Data access
Supply chain

// install

Copy the install command and let the AI configure it · recommended for beginners

No copy-paste install info for "Fast Diff MCP Server" yet — see the docs or source repo.

// examples

Compare code changes

Prompt

Compare the following two code snippets and return the differences in unified diff format: Old version: function add(a,b){return a+b}
New version: function add(a, b) {
  return Number(a) + Number(b);
}

Expected

A unified diff showing added and removed lines, clearly indicating code changes.

Review document revisions

Prompt

Compare these two product description texts and output a unified diff so I can review the exact changes. Text A: This product supports online collaboration and file sharing. Text B: This product supports real-time online collaboration, file sharing, and version control.

Expected

A sentence-level or line-level diff that highlights additions, deletions, and edits for quick review.

Check config file differences

Prompt

Compare the following two configuration file contents and return the differences in unified diff format: Old config: PORT=3000
DEBUG=false
New config: PORT=8080
DEBUG=true
LOG_LEVEL=info

Expected

A diff result of configuration changes that helps identify modified and newly added settings.