MCP tools: AI (Branded Email)

The MCP tools for atbridge Branded Email — turn a block layout into a branded HTML email (charts included). write tools need ATBRIDGE_ALLOW_WRITES=1 — see the MCP overview. (Provider activation for the in-Thunderbird AI Chat is device-side and lives on the CLI, not MCP.)

Tool	Access	Purpose	Key parameters
compose_templates	read	List atbridge Branded Email starter templates, or fetch one’s ready-to-fill spec	name (optional)
compose_theme_get	read	The saved Branded Email brand — colours, fonts and wordmark applied to every branded email. Returns default, saved and effective	—
mail_compose	write	Render an atbridge Branded Email (branded HTML) and draft/send/review it	to[], subject, mode (draft|send|review), blocks, theme, identity
compose_templates_save	write	Save a reusable Branded Email template (Pro/Enterprise)	name, blocks (or from_last), subject, description
compose_templates_delete	write	Delete one of your saved templates	name

| compose_theme_set | write | Set the brand — MERGES, so send only what changes; hex colours only, validated before saving | colors, fonts, brand | | compose_theme_reset | write | Clear the saved brand, back to the atbridge default | — |