Add AgentMail third-party MCP plugin - #211
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Wire AgentMail's hosted MCP server into the marketplace using the documented Cursor API-key path (x-api-key header). Co-authored-by: Sam Sokolin <SamSokolin@users.noreply.github.com>
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Adds an official marketplace plugin for AgentMail, following their documented Cursor API-key MCP setup: https://www.agentmail.to/docs/integrations/mcp#cursor-api-key
The plugin points at AgentMail's hosted Streamable HTTP server (
https://mcp.agentmail.to/mcp) and forwards a user-suppliedAGENTMAIL_API_KEYas anx-api-keyheader. No credential is bundled.Agents can create inboxes, send/receive/reply/forward mail, search threads, and manage drafts and attachments. The hosted runtime remains the source of truth for the tool catalog.
Files
third_party/agentmail/— plugin manifest, MCP config, README, changelog, license, and AgentMail's official mark.cursor-plugin/marketplace.jsonand rootREADME.md— marketplace registrationAuth
Matches AgentMail's Cursor docs (API key, not OAuth). Keys come from console.agentmail.to under Settings → API Keys and must include the
am_prefix.