Connect Mermail MCP

Overview

Use this skill to establish and diagnose the external client's authenticated Streamable HTTP connection to Mermail. It is a connection-control skill, not a substitute for the domain skills that operate mailboxes, compose email, administer workspaces, run triage, call Composio, chat with the mailbox Assistant, or use Agent Wallet.

Read platforms.md for exact client configuration and profile selection. Read troubleshooting.md for catalog expectations, read-only smoke tests, status recovery, and schema errors. Read security.md before handling API keys, OAuth, workspace scope, logs, or any connection handoff. In API-key mode, use check-connection.mjs for deterministic initialization and catalog checks.

Preferred Deliverables

• A connection plan naming the client, endpoint, authentication mode, workspace boundary, and tool profile.
• A minimal client configuration that references a secret environment variable rather than embedding its value.
• Verification evidence containing server identity, selected profile, discovered tool count, required canaries, and one read-only mailbox/workspace smoke test.
• A precise diagnosis that distinguishes authentication, scope, credits, rate limits, stale client discovery, missing capability, and invalid arguments.
• A recovery sequence with the smallest safe reconnect or reload action and no speculative tool names or write retries.
• A PayBox prerequisite report distinguishing member live-tool access, owner-only connection/legacy access, PayBox connection state, and API-key/profile limitations.

Workflow