Gemini-powered governance plane that gates every AI agent tool call, signs the audit trail, and meters per-business-unit spend. This is the live gateway service. The dashboard is a separate service.
curl -X POST https://agent-sentinel.up.railway.app/v1/tools/call \
-H 'content-type: application/json' \
-d '{"agent_id":"agent-sales-01","session_id":"hi","tool":"web.search","args":{"q":"competitor pricing 2026"}}'
Per-IP rate limit: 30 req/min, 500 req/day on Gemini-spending endpoints. Clone github.com/SankarSubbayya/agent_sentinel and run locally for unlimited use.