Patchloom MCP Server

One binary. Every platform. Structured file edits for AI agents. Patchloom is a single-binary CLI that gives AI coding agents safe, structured file editing on any operating system. It edits JSON, YAML, and TOML by selector (not regex), preserves comments, understands code structure across 20 languages, batches multiple file edits into one tool call, and works identically on Linux, macOS, and Windows.

People who work with automation, code generation and developer tools and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Rust.

VERIFIED ACTIVE

LAST COMMIT 2026-09-18 · ★ 17 · #40 OF 168 MAINTAINED DEVELOPER TOOLS · VERIFIED 2026-09-18

MIT · Rust servers · how we verify → /methodology

01 · Install Patchloom

before you install - you'll need

Set PATCHLOOM_MCP_SURFACE before connecting.

Claude Code

claude mcp add patchloom-patchloom -- npx -y patchloom

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "patchloom-patchloom": {
      "command": "npx",
      "args": [
        "-y",
        "patchloom"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

npm package patchloom - unscoped; check the name against the project README before installing

registry namespace io.github.patchloom is GitHub-verified and matches the repo owner

03 · What Patchloom can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

patchloom-v0.34.0 · 2026-09-11

Patchloom 0.34.0 · Empty and whitespace-only edits now return invalid_input instead of · writing junk. AST parse that runs longer than five seconds returns · parse_timeout and exit 4. · Highlights · Blank create…

patchloom-v0.33.0 · 2026-09-08

Patchloom 0.33.0 · Windows dests, globs, and line endings now follow the same rules as · Linux. Library hosts can set charset on writes. · Highlights · A dest like .txt matches files in the current directory only.…

patchloom-v0.32.0 · 2026-09-02

Patchloom 0.32.0 · YAML merge-key edits keep shared mappings, sibling anchors, and · comments instead of rewriting the whole file. Patch deletes report · a change and apply hunks before unlink, so leftover lines stay…

04 · Who maintains Patchloom

Patchloom is maintained by patchloom. It's the only MCP server we track from this author; the repo dates to May 2026.

05 · Facts

repository: github.com/patchloom/patchloom
category: developer tools - ranked #40 of 168 actively-maintained developer tools servers as of 2026-09-18.
release cadence: 10+ releases in the last 90 days (latest 2026-09-11)
registry: io.github.patchloom/patchloom (active, first published 2026-07-20 · 21 versions)
packages: cargo:patchloom · npm:patchloom

06 · Patchloom FAQ

What is Patchloom?

Is Patchloom still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-18 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

How do I install Patchloom?

Run `npx -y patchloom`. The README documents one environment variable (PATCHLOOM_MCP_SURFACE) to set first. Set PATCHLOOM_MCP_SURFACE before connecting. You can also paste the ready-made client config above.

Does Patchloom run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Patchloom

Alternatives to Patchloom

Maintained developer tools servers if Patchloom isn't the fit.

Pairs well with

Servers that cover what Patchloom doesn't - only shown when the pairing reason fits the companion.

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