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About
Most AI cost tools tell you what you spent after the fact. Guardrail stops it before it happens. It runs as a local proxy in front of Claude Code and Codex, tracking every request live and blocking the next one once you hit a cap you set, with a graceful choice (finish now vs. stop) instead of a hard kill. You get a live dashboard, cross-tool visibility across Claude Code and Codex in one place, cache-write cost breakdowns, and shadow-usage detection, all without needing an admin console, a specific billing plan, or any setup beyond a single connect command. Free tier available.
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