dep-diff

A local MCP server that translates changes in an npm or PyPI lockfile into a plain-language upgrade plan. A lockfile records the exact package versions used by a project.

In plain words
What is it for?
Use it when reviewing dependency upgrades in JavaScript or Python projects to get a human-readable summary of the changes.
Why use it?
Raw lockfile diffs are hard to read and do not clearly show what a dependency update means.

MCP server for Claude CodeCodexCursor

Part of the dep-diff plugin — 2 MCP servers shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add mcp/digicatalyst-systems/dep-diff-mcp/dep-diff
Clone the repo
git clone --depth 1 https://github.com/DigiCatalyst-Systems/dep-diff-mcp

Made for: Claude Code, Codex, Cursor.

Or install dep-diff, the plugin that ships this one along with the rest of its 2 MCP servers.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

dep-diff scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.mcp.json · 9 lines

What it actually says

{
  "dep-diff": {
    "command": "npx",
    "args": [
      "-y",
      "@digicatalyst/dep-diff-mcp"
    ]
  }
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 9 lines scan A ef8680acdb8f

Subscribe to this mod's changes

dep-diff is an MCP server published in the GitHub repository DigiCatalyst-Systems/dep-diff-mcp (2 stars, last pushed 9d ago), licensed MIT. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.