API Changelog

All notable changes to the Templated API are documented here.

July 2026

API Keys

• API key authentication is live — create keys under Integrations → API Keys in the app and call any account-scoped endpoint with Authorization: Bearer tmpl_sk_.... Available on every plan.
• Keys are account-scoped with editor permissions; up to 5 active keys per account; instant revocation
• Management endpoints: GET/POST /api/accounts/{slug}/api-keys, DELETE /api/accounts/{slug}/api-keys/{keyId} (session auth only)
• Authentication and the Quickstart now lead with API keys

Documentation Refresh

• New: Template Document Reference — the full block model behind craftState: all 11 block types, shared styles, responsive settings, dark mode, and a complete worked example
• New guides for previously undocumented endpoints: Import HTML, Test Sends & Compatibility, ESP Integrations (Mailchimp, Klaviyo, Constant Contact, Campaign Monitor), and Sub-Accounts
• AI Generation guide now covers guided mode, the follow-up endpoint, email types, and iterative refinement
• Brand Kit guide now documents all fields (voice, industry, style preferences) and website extraction
• Corrections: template create/update use htmlContent and craftState (not html/design); updates are PATCH (not PUT); duplicates are named "(Copy)"; template status values are draft/exported; Unsplash downloads take downloadLocation
• OpenAPI spec expanded to cover test sends, HTML import, compatibility checks, sub-accounts, ESP integrations, brand-kit extraction, AI follow-up, member management, and invites

February 2026

Sub-Accounts API

• POST /api/accounts/{slug}/sub-accounts — Create a sub-account under a parent account
• GET /api/accounts/{slug}/sub-accounts — List sub-accounts for a parent account
• DELETE /api/accounts/{slug}/sub-accounts/{subSlug} — Detach a sub-account
• Sub-accounts share pooled usage limits with their parent account
• Available to Business plan accounts

Developer Docs Launch

• Published developer documentation at developer.templated.email
• Interactive API reference with endpoint testing via Scalar
• Getting started guides, authentication docs, and workflow guides
• OpenAPI specification available at /openapi.yaml

Available Endpoints

The following API endpoint categories are documented:

• Authentication — Register, sign in, email verification
• Accounts — Create, list, update, delete accounts
• Members — Invite, manage roles, remove members
• Templates — Full CRUD, duplicate, import
• AI Generation — Generate templates from natural language prompts
• Brand Kit — Manage brand colors, logos, typography
• Fonts — Upload custom fonts, browse Google Fonts
• Images — Upload and manage template images
• Integrations — Unsplash (search, download)