> ## Documentation Index > Fetch the complete documentation index at: https://docs.brew.new/llms.txt > Use this file to discover all available pages before exploring further. # MCP tools > The full Brew MCP tool catalog by domain — emails, sending, audiences, contacts, domains, automations, analytics, brand, and media. The Brew MCP exposes every Public API v1 operation as a tool. Each is strictly typed (Zod input schema) with `readOnly` / `destructive` annotations, and write tools accept an optional `idempotency_key` for safe retries. Call `get_brew_capabilities` for the live, machine-readable catalog including per-tool credit costs. ## Discovery | Tool | What it does | | ----------------------- | -------------------------------------------------------------- | | `get_brew_capabilities` | The capability catalog + lifecycle workflows. Call this first. | ## Email | Tool | What it does | | -------------------------------- | ------------------------------------------------------------------------------------------------------------------- | | `list_email_designs` | List designs, or fetch one (`include: ["html"]` / `["versions"]`). | | `create_email_design`\* | Generate a new on-brand design from a prompt. | | `import_email_design`\* | Import HTML / MJML / React-Email JSX. | | `edit_email_with_ai`\* | Apply a natural-language edit, producing a new version. | | `restore_email_version` | Restore a previous version. | | `delete_email_design` | Delete a design (idempotent). | | `audit_email_accessibility` | Accessibility audit of a design. | | `preview_email_across_clients`\* | Render a design in real inboxes/devices — Gmail, Outlook, Apple Mail, iOS (light & dark) — a screenshot per client. | ## Sending | Tool | What it does | | ------------- | ------------------------------------------------------------------------------- | | `send_email` | Campaign or test send; pass `scheduledAt` to schedule. Fail-closed idempotency. | | `cancel_send` | Cancel a scheduled / in-flight send. | ## Audiences & contacts | Tool | What it does | | ---------------------------------------------------------------------------------------------------- | ---------------------------------------------------------- | | `list_audiences` / `create_audience` / `update_audience` / `delete_audience` | Saved segments built from contact filters. | | `search_contacts` / `create_contact` / `update_contact` / `delete_contact` / `batch_delete_contacts` | Manage contacts. | | `validate_contacts` | Validate email addresses before import / send. | | `import_contacts_csv` | Bulk import contacts. | | `list_custom_fields` / `create_custom_field` / `delete_custom_field` | Custom contact fields (great for CRM-enriched attributes). | ## Domains | Tool | What it does | | -------------------------------------------------------------------------------------- | ---------------------------------- | | `list_domains` / `create_domain` / `verify_domain` / `update_domain` / `delete_domain` | Manage and verify sending domains. | ## Automations & triggers | Tool | What it does | | ------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------- | | `list_automations` / `create_automation` / `update_automation` / `delete_automation` | Build and publish automated flows (`update_automation { published: true }`). | | `test_automation` | Dry-run a flow. | | `run_automation` | Run a manual-audience automation against its cohort. | | `list_automation_runs` | Inspect runs. | | `list_audience_runs` | Inspect manual-audience runs. | | `list_triggers` / `create_trigger` / `update_trigger` / `delete_trigger` | The named events automations listen for. | | `fire_trigger_event` | Fire a trigger with a payload to start its automations. | ## Analytics | Tool | What it does | | ---------------------------------------------------------------------------------------------------- | -------------------------- | | `get_send_analytics` / `get_campaign_analytics` / `get_automation_analytics` / `get_event_analytics` | Delivery + engagement. | | `list_trigger_instances` | Inbound trigger audit log. | ## Brand, media & account | Tool | What it does | | ------------------------------------------------------------------------------------------- | ----------------------------------------- | | `get_brand` / `update_brand` / `search_brand_images` | The connected brand. | | `generate_image`\* / `create_gif`\* / `transform_image`\* / `html_to_png`\* / `add_image`\* | On-brand media. | | `get_usage` / `list_templates` | Plan, credits, send quota, and templates. | `*` = credit-metered. Out of credits → an `INSUFFICIENT_CREDITS` error. ## Need Help? Our team is ready to support you at every step of your journey with Brew. Choose the option that works best for you: Type in the "Ask any question" search bar at the top left to instantly find relevant documentation pages. Click "Open in ChatGPT" at the top right of any page to analyze documentation with ChatGPT or Claude for deeper insights. Book time with our founders for personalized guidance on strategy, best practices, or complex implementation questions. Need immediate assistance? Reach us at **+1-(332)-203-2145** for urgent issues or time-sensitive questions. Our preferred support channel. You'll receive an invite after signup for direct founder support and fast responses. Contact us at **[support@brew.new](mailto:support@brew.new)** for detailed inquiries or if you prefer not to use Slack.