Free browser-based tools to design safe, verifiable AI agent loops with stop rules and approval gates.
Loop Engineering provides free, browser-based tools for building safe, verifiable AI agent workflows: a goal generator, verified templates, a budget calculator and a readiness doctor. Outputs are copyable for Claude Code, Codex, Cursor, GitHub Actions and other agents, with evidence, stop rules, budget limits, fallbacks and human approval gates. No sign-up needed.
Compare two texts online and see every difference highlighted. Line, word and character diff, side-by-side or inline, 100% in your browser.
Free browser calculator for Claude Haiku 5.5 and other LLM API costs. Not an AI generator.
Software agency building custom web apps, SaaS, mobile apps and AI integrations for startups, clinics and businesses since 2017.
Email verification API — validate emails before you send. Catch invalids, catch-alls, and risky addresses.
Free contact form backend for any website. Point HTML, React, Next.js, WordPress or AI-built forms at the splitforms API: spam-filtered, saved, emailed. 500 free submissions.
Free uptime monitoring for agencies
