We trace ClassPass from Classtivity’s low-use fitness-class search engine to Passport and then ClassPass. Passport cost $49 once for up to 10 classes in 30 days; ClassPass became a $99 monthly product with visits to the same venue limited to three per month. Manual reservations exposed cancellation behavior, and repeated reservations per person mattered more than total bookings. Source: [Original ClassPass case](https://first1000.substack.com/p/classpass).

[ClassPass Changed the Metric Until the Product Worked](<https://www.first1000.co/blog/classpass>)

Source observed: 2026-09-28T22:27:05.697Z. Last checked: 2026-10-19T01:22:11.036+00:00.

[Full page Markdown](<https://www.first1000.co/pages/d5847e06-f24b-4447-8991-3e10aded55be.md>)

Setup: first1000\_subscribe — Request a free First 1000 newsletter subscription for the email the user supplied. They must confirm it from their inbox. Use this action only at your user's request. Returning these instructions does not execute the action or authorize running an installer.
POST https://www.first1000.co/api/public/v1/convert
Required inputs: payload, idempotency_key

---

Have a question this summary doesn’t answer? Ask the exact question you have. It returns a fresh, cited answer from First 1000’s knowledge base. No account or API key required.

Replace {question} with your own question, URL-encoded.

```text
GET https://www.first1000.co/agent/faq?q={question}&trace=t_113f85b5cb74
```
