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OPENCLAW

Register Mermail
on OpenClaw.

Connect with OAuth, then verify Mermail with a live probe.

Start setupRead MCP docs

Why OpenClaw

Built for the agent you already use.

Mermail gives OpenClaw a dedicated inbox and payment layer so verification, checkout, and receipts stay in the same loop.

OAuth MCP connection
Live doctor probe
Optional ClawHub skills
Hosted Streamable HTTP

Before you start

Check 3 things.

openclaw --version works.

Use the coding or messaging profile; minimal hides MCP.

Allow bundle-mcp and browser or returned-code OAuth.

OpenClaw MCP docs

Success contract

Done when all 3 pass.

status --verbose shows Mermail with OAuth.

doctor mermail --probe connects and lists tools.

list_mailboxes succeeds in an agent run.

Three steps to connect.

1

Add Mermail over OAuth

Register the OAuth Streamable HTTP server.

Install
openclaw --version
openclaw mcp add mermail --url https://console.mermail.app/mcp --transport streamable-http --auth oauth
2

Authorize Mermail

Finish OAuth. If it returns a code, pass it once.

Auth
openclaw mcp login mermail
# If approval returns a code:
# openclaw mcp login mermail --code <returned-code>
3

Probe, then try a tool

Run the live probe, then the read-only check.

Verify
openclaw mcp doctor mermail --probe
Ask: "List my Mermail mailboxes" (tool: list_mailboxes)

A FEW GOOD QUESTIONS

Questions,
answered.

Fast fixes for auth, setup, and discovery.

How do I add a compose skill?

Run npm install -g clawhub, then clawhub install mermail/mermail-compose-email.

OAuth returned a code instead of finishing automatically.

Run openclaw mcp login mermail --code <returned-code>, then run doctor --probe.

Doctor passes but the agent cannot see Mermail tools.

Use coding or messaging, allow bundle-mcp, then reload MCP or restart OpenClaw.

See all integrations

Integration index
Claude Code

Connect OAuth and install 15 skills for inbox, verification, and x402 workflows.

ChatGPT

Add Mermail as a custom OAuth app in an eligible ChatGPT workspace.

Codex

Connect OAuth and install 15 skills for inbox and x402 workflows.

Cursor

Add the hosted MCP server with OAuth—no API key required.

Grok

Connect Mermail to Grok web chat and Grok Bot with OAuth, PayBox, and inline MCP Apps.

Hermes

Add Mermail to Hermes with Streamable HTTP OAuth.