Inside agent-gov: Architecture of an Agent Cost Governance Platform
AI agents orchestrate complex workflows — calling LLMs, scraping pages, querying databases, sending emails. Each call costs real money. Without a governance layer, a single buggy loop can burn through your budget before anyone notices.
agent-gov is an open-source reverse proxy that intercepts every tool call your agents make, enforces budgets in real time, and auto-pauses out-of-control agents. Built as a FastAPI service with SQLite persistence, running 45 tests in 0.3 seconds.
This post walks through the architecture: the proxy pattern, the four-stage decision tree, cost tracking with a tool registry, multi-tenancy via workspaces, and the lazy auto-reset pattern.
The Proxy Pattern
