Local spend caps, kill-switch blocking and Ed25519-signed receipts for AI agent tool calls.
To add AgentGuard to Claude, run the install command below or copy the ready-made config for Claude Code, Claude Desktop, Cursor and VS Code further down. Restart your client after adding it and its tools show up in your next conversation. It needs 21 environment variables, listed below.
Install
npx -y @agentguard-run/mcp@0.3.1Environment variables
AGENTGUARD_MCP_DAILY_CAP_CENTSSet in your MCP configAGENTGUARD_MCP_PER_CALL_CAP_CENTSSet in your MCP configAGENTGUARD_MCP_TENANTSet in your MCP configAGENTGUARD_HOMESet in your MCP configAGENTGUARD_MCP_LEDGERSet in your MCP configAGENTGUARD_MCP_DISABLE_COST_OVERRIDESet in your MCP configAGENTGUARD_LOCK_COST_OVERRIDESSet in your MCP configAGENTGUARD_ACTOR_DIGESTSet in your MCP configAGENTGUARD_LICENSE_KEYSet in your MCP configAGENTGUARD_LICENSE_ENDPOINTSet in your MCP configAGENTGUARD_NO_BEACONSet in your MCP configAGENTGUARD_TELEMETRYSet in your MCP configAGENTGUARD_INSTALL_IDSet in your MCP configAGENTGUARD_ANONYMOUS_INSTALL_IDSet in your MCP configCISet in your MCP configGITHUB_ACTIONSSet in your MCP configGITLAB_CISet in your MCP configCIRCLECISet in your MCP configBUILDKITESet in your MCP configVERCELSet in your MCP configNETLIFYSet in your MCP configInstall with your client
claude mcp add agentguard --env AGENTGUARD_MCP_DAILY_CAP_CENTS=<YOUR_AGENTGUARD_MCP_DAILY_CAP_CENTS> --env AGENTGUARD_MCP_PER_CALL_CAP_CENTS=<YOUR_AGENTGUARD_MCP_PER_CALL_CAP_CENTS> --env AGENTGUARD_MCP_TENANT=<YOUR_AGENTGUARD_MCP_TENANT> --env AGENTGUARD_HOME=<YOUR_AGENTGUARD_HOME> --env AGENTGUARD_MCP_LEDGER=<YOUR_AGENTGUARD_MCP_LEDGER> --env AGENTGUARD_MCP_DISABLE_COST_OVERRIDE=<YOUR_AGENTGUARD_MCP_DISABLE_COST_OVERRIDE> --env AGENTGUARD_LOCK_COST_OVERRIDES=<YOUR_AGENTGUARD_LOCK_COST_OVERRIDES> --env AGENTGUARD_ACTOR_DIGEST=<YOUR_AGENTGUARD_ACTOR_DIGEST> --env AGENTGUARD_LICENSE_KEY=<YOUR_AGENTGUARD_LICENSE_KEY> --env AGENTGUARD_LICENSE_ENDPOINT=<YOUR_AGENTGUARD_LICENSE_ENDPOINT> --env AGENTGUARD_NO_BEACON=<YOUR_AGENTGUARD_NO_BEACON> --env AGENTGUARD_TELEMETRY=<YOUR_AGENTGUARD_TELEMETRY> --env AGENTGUARD_INSTALL_ID=<YOUR_AGENTGUARD_INSTALL_ID> --env AGENTGUARD_ANONYMOUS_INSTALL_ID=<YOUR_AGENTGUARD_ANONYMOUS_INSTALL_ID> --env CI=<YOUR_CI> --env GITHUB_ACTIONS=<YOUR_GITHUB_ACTIONS> --env GITLAB_CI=<YOUR_GITLAB_CI> --env CIRCLECI=<YOUR_CIRCLECI> --env BUILDKITE=<YOUR_BUILDKITE> --env VERCEL=<YOUR_VERCEL> --env NETLIFY=<YOUR_NETLIFY> -- npx -y @agentguard-run/mcp@0.3.1
Run this in a terminal to add the server to Claude Code.
What this does
AgentGuard exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.
Requirements
This server needs the following environment variables to be set before it can run:
AGENTGUARD_MCP_DAILY_CAP_CENTS AGENTGUARD_MCP_PER_CALL_CAP_CENTS AGENTGUARD_MCP_TENANT AGENTGUARD_HOME AGENTGUARD_MCP_LEDGER AGENTGUARD_MCP_DISABLE_COST_OVERRIDE AGENTGUARD_LOCK_COST_OVERRIDES AGENTGUARD_ACTOR_DIGEST AGENTGUARD_LICENSE_KEY AGENTGUARD_LICENSE_ENDPOINT AGENTGUARD_NO_BEACON AGENTGUARD_TELEMETRY AGENTGUARD_INSTALL_ID AGENTGUARD_ANONYMOUS_INSTALL_ID CI GITHUB_ACTIONS GITLAB_CI CIRCLECI BUILDKITE VERCEL NETLIFY
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install AgentGuard?
Run the Claude Code command in the install section to add AgentGuard to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.
Which clients work with AgentGuard?
This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to AgentGuard as well.
Does AgentGuard need an API key?
Yes. Before it can run, set these environment variables: AGENTGUARD_MCP_DAILY_CAP_CENTS, AGENTGUARD_MCP_PER_CALL_CAP_CENTS, AGENTGUARD_MCP_TENANT, AGENTGUARD_HOME, AGENTGUARD_MCP_LEDGER, AGENTGUARD_MCP_DISABLE_COST_OVERRIDE, AGENTGUARD_LOCK_COST_OVERRIDES, AGENTGUARD_ACTOR_DIGEST, AGENTGUARD_LICENSE_KEY, AGENTGUARD_LICENSE_ENDPOINT, AGENTGUARD_NO_BEACON, AGENTGUARD_TELEMETRY, AGENTGUARD_INSTALL_ID, AGENTGUARD_ANONYMOUS_INSTALL_ID, CI, GITHUB_ACTIONS, GITLAB_CI, CIRCLECI, BUILDKITE, VERCEL, NETLIFY. They go in the env block of your MCP config.
Imported from the Official MCP Registry. The details above come from the registry entry; the maker can claim this listing to correct them, add docs, and see its traffic.
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