# tokenusage.dev

> Unofficial site about OpenAI Codex usage. It records Codex usage-limit reset announcements from @thsottiaux's public posts on X (Reset Alerts), compares Codex and Claude subscription plans, and estimates each Codex plan's weekly limit from token-counter users' self-reported logs. Not affiliated with OpenAI or Anthropic.

## Pages

- [Codex Reset Tracker](https://tokenusage.dev/resets): the latest Codex reset announcements and recent history, with text and email alerts
- [Codex vs Claude subscriptions](https://tokenusage.dev/): Codex and Claude plans side by side at $20, $100 and $200 a month: each model's weekly limit and its value at API prices
- [How the numbers work](https://tokenusage.dev/method): how a Codex plan's weekly limit is estimated, and where the estimate goes wrong
- [Developers](https://tokenusage.dev/developers): the public JSON and MCP server, their fields, caching and fair use

## Public JSON

- [Reset announcements](https://tokenusage.dev/api/resets): read-only, no key; newest first, at most 50. Free to reuse with credit: where you show the data to others, show [Data: tokenusage.dev](https://tokenusage.dev/resets).

## MCP server

- [MCP endpoint](https://tokenusage.dev/mcp): Streamable HTTP, read-only, no sign-in; tool get_codex_reset_announcements
- [Server card](https://tokenusage.dev/mcp/server-card): v1 identity, connection details and supported protocol versions; tools are listed through tools/list
- [AI catalog](https://tokenusage.dev/.well-known/ai-catalog.json): domain discovery pointing to the server card