---
title: "Subscribe"
method: POST
path: "/subscribe"
---

# Subscribe

`POST /subscribe`

## Request

- Base URL: `https://cathedral-ai.com` (the document declares no server; this is the origin it was published from)
- URL: `https://cathedral-ai.com/subscribe`
- Auth: none declared. Required headers: `authorization`

Upgrade to Cathedral Pro: 10,000 memories, 16KB/memory, unlimited snapshots.

Returns checkout_url -- open in a browser to pay. Tier upgrades automatically.

## Headers

- `authorization` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/cathedral-ai/apis/cathedral-memory-service.md) · [All operations](https://skmtc.dev/cathedral-ai/apis/cathedral-memory-service/llms.txt) · [OpenAPI document](https://skmtc.dev/cathedral-ai/apis/cathedral-memory-service/revisions/e40fefc11dcf?raw)