MCP Server for Deliverability: Run Inbox Checks From Your AI Agent

Deliverability debugging is a perfect fit for agent workflows: tool-heavy, data-driven, bounded task graphs. We shipped an official MCP server so your agent can treat Inbox Check as a first-class tool.

What the MCP server exposes

run_placement_test — send a draft through the seed network, return per-provider placement.
get_test_result — poll a previous test by token.
monitor_domain — subscribe a domain to daily auth+blacklist+reputation checks.
presend_analyze — spam-word/link intel/human-perception check on a draft before sending.
list_providers — enumerate supported mailbox providers and seeds available.

Install

npm install -g ldm-inbox-check-mcp
# Or use directly via npx
npx ldm-inbox-check-mcp@latest

Claude Desktop config

{
  "mcpServers": {
    "inbox-check": {
      "command": "npx",
      "args": ["-y", "ldm-inbox-check-mcp@latest"],
      "env": { "INBOX_CHECK_TOKEN": "optional-for-higher-limits" }
    }
  }
}

What agents do with it

Deliverability triage. “My Gmail placement dropped — run a test and explain the cause” is a 30-second round trip.
Pre-send review. An agent pipes your draft through presend_analyze before the sequencer sends it.
Weekly digest. Scheduled agent runs all three tools, returns a 200-word health summary.
Campaign QA. Agent fires a placement test for every new template variant, aborts promotion if below threshold.

MCP is free

No token required for basic usage — same rolling limits as the web UI. Token unlocks higher concurrency and longer retention. Start using it.

FAQ

Do I need a paid plan for the MCP server?

No. Anonymous use is rate-limited but fine for typical agent workflows. Token-authenticated use raises concurrency.

Is there an A2A agent endpoint too?

Yes — same tool set exposed over A2A. See our A2A protocol article.

What SDKs/runtimes work?

Anything that speaks MCP: Claude Desktop, Claude Code, Cursor, Continue, Zed, the Anthropic Agent SDK, OpenAI Responses API tool-use proxies, and custom stdio/http clients.

MCP server for deliverability