LocalFree

Ctxfw MCP server

heuristicolab/ctxfw

Zero-egress AI Agent Firewall: SARA prompt injection defense, AST context pruning & MCP governance.

7 GitHub stars1 forks
Source code

Install Ctxfw in Claude Code

Claude Code
claude mcp add ctxfw -- uvx ctxfw
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "ctxfw": {
      "command": "uvx",
      "args": [
        "ctxfw"
      ]
    }
  }
}

Frequently asked questions

What does the Ctxfw MCP server do?

Zero-egress AI Agent Firewall: SARA prompt injection defense, AST context pruning & MCP governance.

Is the Ctxfw MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Ctxfw run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Ctxfw to Claude Code?

Run: claude mcp add ctxfw -- uvx ctxfw

More ai agents & coding agents MCP servers

View all

DaVinci Resolve Lua

7

saadk408/davinci-resolve-lua-mcp

Control the free edition of DaVinci Resolve 21.1 from Claude through a Lua script inside Resolve.

LocalFree

CTFd

7

MrJamescot/ctfd-mcp-server

MCP server for CTFd v3: list challenges, submit flags, and query scoreboards via AI agents.

LocalFree

Document Integrity Validator

0218

OjasKord/document-integrity-validator-mcp

AI reasoning checks any document against known international standards before your agent acts on it.

Local + RemoteAccount needed

Claude Prompt Optimizer

210

rishiatlan/Claude-Prompt-Optimizer-MCP

Scores, compiles & optimizes prompts for any LLM. Zero AI calls inside. Freemium.

LocalFree

dompruner

2146

dong7812/dompruner-mcp

Strips layout noise via DOM AST; with a query, BM25 filters to relevant sections. No model or API.

Local + RemoteFree

Base Flash Arb

220

lordbasilaiassistant-sudo/base-flash-arb-mcp

MCP server for AI agents to detect flash loan arbitrage opportunities across DEXes on Base. Scan Uni

LocalFree