BBB — stable

# key-guard A local MCP server that keeps API keys off Claude's servers. ## Why This Exists When Claude reads a file containing an API key, the raw key content gets sent to Claude's servers. key-guard prevents this by acting as a local middleman — Claude calls a tool, the tool reads the key and makes the API call locally, and only the result is returned to Claude. (key-guard)

Name: # key-guard A local MCP server that keeps API keys off Claude's servers. ## Why This Exists When Claude reads a file containing an API key, the raw key content gets sent to Claude's servers. key-guard prevents this by acting as a local middleman — Claude calls a tool, the tool reads the key and makes the API call locally, and only the result is returned to Claude. skill trust rating BBB
Item: # key-guard A local MCP server that keeps API keys off Claude's servers. ## Why This Exists When Claude reads a file containing an API key, the raw key content gets sent to Claude's servers. key-guard prevents this by acting as a local middleman — Claude calls a tool, the tool reads the key and makes the API call locally, and only the result is returned to Claude.
Rating: BBB
Author: Agent Economy Report

above the trust line (BBB): proven adoption, mature, nothing alarming in its instructions.

Security guardrail: prevents API keys from being sent to Claude. Triggers when user asks to call an external API, use a key, check credentials, read .env fil...

Signals

Downloads	2,623 (7d: +2,585)
Installs · stars · versions	81 · 0 · 2
Track record	28 days in the registry
Author	domjeff
Requires	none declared
Instructions read	yes: payees, wallets and shell patterns extracted from SKILL.md

Flags

None.

Who it pays (x402 counterparties found in its instructions)

service	service rating	wallet
No payee found in its instructions.

Install

openclaw skills install @domjeff/key-guard · registry page

For agents

Free JSON: https://agenteconomy.report/k/key-guard.json · badge: https://agenteconomy.report/k/key-guard.svg · paid record via x402: GET https://agenteconomy.report/api/skill/key-guard (US$ 0.005). Check any skill before installing it with the x402-trust-check skill.

Code audit

No independent code audit of this skill yet. Commission one (US$ 29 per version; the result is published whatever it says).

How this is computed

Adoption (downloads relative to the registry, 7-day velocity, installs), maturity (age, release cadence, stars, author portfolio), inherited payment trust (every host or wallet the skill's instructions pay is looked up in the x402 service trust index; paying a rated service inherits its tier, an unknown hard-coded wallet is flagged) and hygiene (registry moderation verdict, license, declared setup, origin). Flags cap the tier, they never add to it. Trust line at BBB. Rating as of 2026-09-07.