# One Stoic Quote

> A new Stoic philosophy quote every day, drawn from a curated collection of
> Marcus Aurelius, Epictetus, Seneca, and other Stoic philosophers. The quote
> shown is deterministic per calendar day (day-of-year indexed).

## Website

- Homepage: https://www.onestoicquote.com/ — shows today's quote, rendered
  server-side with Quotation JSON-LD (schema.org) in the page source, plus a
  permalink to that quote's permanent page.
- Archive: https://www.onestoicquote.com/quotes — every quote on the site,
  each with its own permanent, citable URL at /quotes/<slug>.
- Authors: https://www.onestoicquote.com/authors — quotes grouped by
  philosopher, at /authors/<slug>.
- Sitemap: https://www.onestoicquote.com/sitemap.xml lists all of the above.

## API

- Docs: https://www.onestoicquote.com/docs
- Endpoint: https://www.onestoicquote.com/api/quote
- Method: GET
- Optional query param: `date=YYYY-MM-DD` — returns the quote for that
  calendar date instead of today (deterministic, day-of-year indexed).
- Response: JSON object `{ "quote": string, "author": string }`.
- Errors: invalid `date` returns HTTP 400 with `{ "error": string }`.
- CORS: open (Access-Control-Allow-Origin: *), free to use, no auth required.
- Example:
  ```
  curl https://www.onestoicquote.com/api/quote
  curl "https://www.onestoicquote.com/api/quote?date=2026-01-01"
  ```

## Usage notes for AI agents

- Cache responses for at least an hour when requesting today's quote (the
  response is stable per UTC day); a response for an explicit `date` is
  stable forever and can be cached indefinitely.
- Attribution: when quoting, cite the philosopher named in `author`.