Guardrail by NeatProxy
Full visibility into your AI spend, before it goes rogue
What it does
We burned real money running AI agents and didn't know why until it was too late. That's the whole reason Guardrail exists. It's a local proxy for Claude Code and Codex that shows you where every dollar goes, system prompt, tools, that MCP server you forgot about, before you spend it. When you're about to blow a budget, Guardrail blocks the request. Not after. Before. Built for developers who'd rather see the bill coming than explain it later.
Guardrail is a local-first spend firewall for AI coding agents. It tracks Claude Code and Codex cost in real time and blocks over-budget requests before they reach the provider. Metadata only, no prompts stored.
Guardrail is a local proxy on localhost:4000. It intercepts runaway agent loops, audits silent context taxes, and enforces hard limits before calls hit provider billing or exhaust your 5-hour subscription quota. A coding agent runs unattended for minutes at a time, and a single retry loop can burn more than a month of subscription before anyone looks. The tools that exist today tell you afterwards. Provider billing is a monthly rear-view mirror. By the time a number looks wrong, the money is already spent. A token counter watches the meter run. It has no opinion about when to stop, and no way to act on one. A threshold alert fires after the spend it is warning you about. A budget you cannot…from neatproxy.com
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