Free tools for AI agent builders
Small, practical utilities for people who run coding agents every day. No sign-up, no tracking of what you type — everything runs in your browser.
Runs entirely in your browser. Nothing you type is sent anywhere.
Agent config generator
Codex · Claude Code · Gemini CLI · +6
Copy the exact config snippet to point your coding agent at a local OpenAI- or Anthropic-compatible gateway.
Open toolLLM cost calculator
Tokens · Prompt cache · Monthly cost
Estimate the monthly cost of an agent workload across models, with prompt caching, and see what cheaper routing could save.
Open tool