ai.mailbeast/mailbeast

MailBeast.ai

Run MailBeast.ai cold email from your AI assistant: campaigns, leads, mailboxes, replies, analytics.

needs auth probed 2026-10-19 · HTTP 401 · Bearer

Streamable HTTP error: Error POSTing to endpoint: {"jsonrpc":"2.0","error":{"code":-32000,"message":"Sign in required. Connect with OAuth (add https://mcp.mailb

Endpoint: https://mcp.mailbeast.ai/mcp (streamable-http)
Host: mcp.mailbeast.ai
Website: https://mailbeast.ai
Registry: active, updated 2026-10-19 · registry entry
Reachable: 1 of the last 1 probe

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The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.

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A mail when this server changes

Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.

For the publisher

The server answers HTTP 401 to an unauthenticated initialize, so the probe cannot list its tools. That is correct for a private server. Some public servers answer initialize and tools/list without credentials and ask for auth on tool calls only; those get a token count here.

Fixed something? Probe it now, with the same steps as the daily run. This page updates with the next daily run.