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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.
Passed 21 of 22 test cases with the skill, and 3 of 22 without it.
and 18 more in the full report
18 fixed3 passed either way1 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 18 test cases the skill fixed. Same model, same prompt, with and without the skill.
We need read-only access to a Gmail inbox. What exact action string is sent to manage_integrations to request specific OAuth scopes before listing tools?
| Checked | Without skill | With skill |
|---|---|---|
| Specifies setting the action parameter to configure | Missed | Passed |
The instructions your model reads when the skill loads.
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.
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
| 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.
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 },
test cases passed, vs 3 / 22 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.