---
title: "US-8 self-service: start a trial on the workspace's canonical Subscription. Resolves the key exactly against the app's own plan catalog (TBP-508) and applies its `trial` + `trialDays` policy. Stripe-side trial config (trial_period_days) is set through the existing checkout flow, not here."
method: POST
path: "/billing/trial/start"
tags: ["account"]
---

# US-8 self-service: start a trial on the workspace's canonical Subscription. Resolves the key exactly against the app's own plan catalog (TBP-508) and applies its \`trial\` + \`trialDays\` policy. Stripe-side trial config (trial_period_days) is set through the existing checkout flow, not here.

`POST /billing/trial/start`

## Request

- Base URL: `https://api.thebridge.dev` (the document declares no server; this is the origin it was published from)
- URL: `https://api.thebridge.dev/billing/trial/start`
- Auth: none declared

## Response `201`

- CanonicalSubscriptionDto
  - `id` string, required
  - `workspaceId` string, required
  - `plan` object, required
    - `slug` string, required
    - `name` string, required
  - `status` 'trial' | 'active' | 'past_due' | 'cancel_at_period_end' | 'canceled', required
  - `createdAt` string, date-time, required
  - `endsAt` string
  - `gateEngaged` boolean

---

[API](https://skmtc.dev/thebridge/apis/bridge-api.md) · [All operations](https://skmtc.dev/thebridge/apis/bridge-api/llms.txt) · [OpenAPI document](https://skmtc.dev/thebridge/apis/bridge-api/revisions/290fffcb3d80?raw)