Free local-first developer toolkit in the browser: JSON format/diff, cron helper, timestamps, JWT decode, hash, Base64, UUIDs. Processing stays in your tab — don’t paste secrets into a stranger’s formatter. No signup. An Acsaven product.
One dashboard for OpenAI, Anthropic, Gemini, OpenRouter & more. Scout emails when you cross your spend limit after daily sync (~24h), or Sync now for same-day numbers. Spike cause by model + savings hints. Read-only keys, AES-256. Free 7-day trial · Solo $9 · Team $29 — not TikTok.