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ProofFlow MCP Server

by hyperion-gpu Your server? Claim it
local only

ProofFlow runs on your own machine — the client starts it, so there is no endpoint to ping. 112 installs a week from pypi. Last commit 20 May 2026.

Audit infrastructure for AI coding agents with evidence-backed review and policy gates.

Installs per day peak 35 · avg 15 · -6% w/w
a month agotoday
112
Installs / week
pypi · proofflow-mcp
7
Stars
5 open issues
20 May 2026
Last commit
from GitHub
MIT
License
Python

What the code does

We read the source, 5 d ago · rules 995398eba69f

A tool parameter reaches a dangerous call

A value the model can set ends up inside a file or shell call. That is not a flaw by itself — for a terminal server it is the job — but it is where things go wrong when it is not.

A tool parameter reaches a dangerous call proofflow_review.test_command → backend/proofflow/services/review_service.py:390
        result = subprocess.run(
In the project's build, not in the package

Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.

Builds a file path from a variable vscode-proofflow/src/webviews/caseDetail.ts:182
      absPath = path.join(folders[0].uri.fsPath, relPath);
Secret passed into the image build frontend/Dockerfile:10
ENV VITE_PROOFFLOW_API_KEY=$VITE_PROOFFLOW_API_KEY

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

A tool parameter here reaches a dangerous call

That is not a flaw by itself — but it is where things go wrong when it is not the job. We re-read this code on every release. Watch it and you hear from us the day another one appears.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add proofflow -- uvx proofflow-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "proofflow": {
      "command": "uvx",
      "args": [
        "proofflow-mcp"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.proofflow]
command = "uvx"
args = ["proofflow-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "proofflow": {
      "command": "uvx",
      "args": [
        "proofflow-mcp"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "proofflow": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "proofflow-mcp"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: PROOFFLOW_BASE_URL (ProofFlow backend URL (default: http://127.0.0.1:8787)), PROOFFLOW_API_KEY (API key for authenticated access to the ProofFlow backend).

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ProofFlow — questions

Answers built from our own checks of this server.

Why is there no uptime for ProofFlow?
ProofFlow runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the pypi package proofflow-mcp was installed 112 times last week.
How do I connect ProofFlow?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls proofflow-mcp straight from pypi; nothing to host, nothing to sign up for.
How many people use ProofFlow?
The pypi package proofflow-mcp was installed 112 times in the last week. Week over week that is -6%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is ProofFlow open source?
Yes — it is published under the MIT licence, written in Python, 7 stars on GitHub and 5 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.