toolgate: a tool-call firewall for agents

Screens agent tool calls for destructive, exfiltration, privilege-escalation and off-task actions using Jev probabilities, ships as an npm package and a Claude Code PreToolUse hook, and logs an audit trail.

Notes

100–500 ms via Vercel AI Gateway plus a ~60 ms static-rule path.

source-backed — Public repository, docs or live artifact. About this label

Destinations

Filed under

• #safety
• #guardrail
• #claude-code
• #github

In collections

• Agent harnesses →
• Coding workflows →