Tool Guardian MCP server
MCP router that keeps tool definitions out of the context window and finds tools on demand.
not scanned yet
2 stars135 downloads/wk
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If you have run it, two minutes of your experience saves the next person an afternoon.
Tool Guardian tools
No tool declarations could be read from the package source. They show once the server is installed.
How Tool Guardian compares
Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.
- Safety score
- 89/100
- higher than 80% of 48,255 servers
- GitHub stars
- 2
- more than 75% of 28,688 servers
- Downloads a week
- 135
- more than 69% of 12,191 servers with a package
Release history: 4 versions in the registry since 2026-10-15, latest 2026-11-01, typically one every 7 days.
Install Tool Guardian in Claude Code, Cursor or VS Code
claude mcp add tool-guardian -- uvx tool-guardian
What the publisher says
From the Tool Guardian repository's README, as published. We do not edit it. Read it on GitHub
Tool Guardian
Seven MCP servers for 951 tokens instead of 20,005 — and tool results that stop flooding the window.
For local models served by Ollama, LM Studio, vLLM or llama.cpp: the router never talks to the model backend, so any of them works when your client's model calls tools.
Measured on DeepSeek Harness with qwen3-coder:30b, 8 tasks: sessions that ended on a tool call written as text instead of made7/16 → 0/32 (16 sessions on 0.4.0-beta.2, 32 on 0.5.0-beta.1; the repair runs in the DSH bundle, see the CHANGELOG).
mcp-name: io.github.LuminariSoftwares/tool-guardian
Works with · Install both · First 5 minutes · Why · Two ways to run it · Install · Measure it · Output ladder · DSH bundle · Compatibility · Changelog
An MCP server that sits in front of your other MCP servers and exposes four small generic tools (list, search, describe, call) instead of dozens of specific ones — discovering the rest on demand — so tool definitions stop eating your context window before the model reads a word.
Companion to Context Guardian: Context Guardian compacts the conversation before the window fills; Tool Guardian keeps the tools from filling it in the first place. Two halves of the same problem.
Works with
pip install tool-guardian, then one entry in your client. Every example below starts the same command, tool-guardian, which reads ~/.tool-guardian/mcp.json: tool-guardian-setup import fills it from the servers you already use.
Shortened. The full README is on GitHub.
Nothing above is checked by us. What we check is on the safety report.
Tool Guardian: common questions
- Is Tool Guardian MCP server safe?
- Yes, by our scan: it is graded A (89/100). Read the Tool Guardian safety report
- How do I install Tool Guardian?
- It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
- Does Tool Guardian need an API key?
- Not as far as the registry entry and our scan can tell: no credentials are declared or required.
- Is Tool Guardian maintained?
- The last commit was 20 days ago (2026-10-15). The latest release is v0.9.1.
- How does Tool Guardian compare with other MCP servers?
- safety score 89/100 (higher than 80% of 48,255 servers); github stars 2 (more than 75% of 28,688 servers); downloads a week 135 (more than 69% of 12,191 servers with a package). Full comparison.