Gallery Platform API
Reference

Update an offer

Updates a draft or scheduled offer's editable fields (title, subject, intro, template, tracking, schedule).

PATCH
/gallery/offers/{id}

Updates a draft or scheduled offer's editable fields (title, subject, intro, template, tracking, schedule).

Authorization

bearerAuth offers:update
AuthorizationBearer <token>

A gallery API key, sent as Authorization: Bearer gpk_… (or the x-api-key header).

In: header

Scope: offers:update

Path Parameters

id*string

Query Parameters

dry_run?boolean

Preview this operation without committing it. When true, the request is authenticated, scoped, and validated, but no side effect runs — no write, no idempotency claim, no audit event, no outbound delivery. The response is HTTP 200 with an X-Dry-Run: true header and a body of { "dry_run": true }, plus an effect object describing what the real call would change when this operation can resolve one.

Header Parameters

Idempotency-Key?string

Optional. Send a unique key per logical operation to make retries safe: a retry with the same key replays the stored success for 14 days instead of re-running the write. Reusing a key with a different body returns 400.

Request Body

application/json

TypeScript Definitions

Use the request body type in TypeScript.

Update an offer's editable fields. Status transitions happen via send/cancel, not here.

Response Body

application/json

application/problem+json

application/problem+json

application/problem+json

application/problem+json

application/problem+json

application/problem+json

{  "id": "string",  "title": "string",  "subject": "string",  "intro": "string",  "template_id": "string",  "status": "draft",  "track_engagement": true,  "scheduled_at": "string",  "sent_at": "string",  "cc_emails": [    "string"  ],  "bcc_emails": [    "string"  ],  "created_by": "string",  "metadata": {    "property1": "string",    "property2": "string"  },  "created_at": "string",  "updated_at": "string"}