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name: integrations description: Use BEFORE recommending or installing any third-party SaaS SDK for email (Resend, SendGrid, Postmark, Mailgun), SMS (Twilio), messaging (Slack), calendar (Google Calendar), CRM (HubSpot, Salesforce), docs (Notion), or project management (Linear, GitHub). Butterbase covers most of these via manage_integrations (Composio-backed) — check first.

Butterbase Integrations (Composio)

The manage_integrations MCP tool gives every Butterbase app access to Composio's toolkit catalog. Before installing a third-party SDK for any of the use cases below, check whether Composio covers it.

Decision rule

User wants: send email / Slack message / create calendar event / post GitHub issue / etc.

Step 1: manage_integrations(app_id, action: "list_available", search: "<keyword>")
Step 2: If a toolkit covers it → use the Composio path (configure → list_tools → execute_action)
Step 3: If no toolkit covers it OR latency is critical → fall back to a direct API call in a function

Common toolkit map

Use case	Composio toolkit	Replaces
Send email	gmail	Resend, SendGrid, Postmark, Mailgun
Read inbox / search	gmail	Custom IMAP, Nylas
Create calendar event	google_calendar	Cal.com API, custom OAuth
Post Slack message	slack	Slack Web API
Create GitHub issue / PR	github	Octokit
Notion page / database row	notion	Notion API
Linear ticket	linear	Linear SDK
HubSpot contact / deal	hubspot	HubSpot API
Salesforce record	salesforce	Salesforce REST

Always call list_available first — the catalog grows.

Flow

1. configure:      manage_integrations(app_id, action: "configure", toolkit: "gmail", scopes: ["gmail.send"])
2. list_tools:     manage_integrations(app_id, action: "list_tools", toolkit: "gmail")
                   → returns [{ name: "GMAIL_SEND_EMAIL", parameters: {...} }, ...]
3. execute_action: manage_integrations(
                     app_id, action: "execute_action",
                     tool_name: "GMAIL_SEND_EMAIL",
                     params: { to, subject, body },
                     user_id: "<end-user uuid>"   // omit for service-level
                   )

Per-user OAuth vs. service-level

• Service-level (omit user_id): the integration runs as the app owner. Use for system notifications, internal automation.
• Per-user (set user_id): the integration runs as the specified end-user. The user must have completed Composio's OAuth flow. Use for "send on behalf of user."

When NOT to use Composio

• ❌ Latency-critical hot path (Composio adds a round-trip). Use a direct API call from a function.
• ❌ Toolkit doesn't exist yet (check list_available). Fall back to a direct API call.
• ❌ The user needs a custom auth flow that Composio doesn't support.

Documentation

For the catalog and per-toolkit scope reference, WebFetch https://docs.butterbase.ai/integrations or call butterbase_docs with topic: "integrations".

Anti-patterns

• ❌ Recommending Resend / SendGrid without checking manage_integrations list_available first.
• ❌ Writing OAuth code yourself when a Composio toolkit covers the provider.
• ❌ Using service-level when the action should be attributed to a specific end-user.