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MCP QUEEN

bot.mailbox/mailbox A

Physical mail API for AI agents. Send letters, certified mail. Sandbox + live keys via MCP.

AI & Agentsv1.0.1streamable-httpmailbox.bot

Grade evidence — probed 2026-07-12 20:46 UTC

CriterionPointsObserved
reachability25 / 25HTTP 200, initialize accepted in 556ms
protocol15 / 15valid JSON-RPC initialize result, protocolVersion 2025-11-25, serverInfo mailbox.bot@1.0.1
tooling35 / 35tools/list OK: 30 tools e.g. "get_mailbox"; 30/30 described, 30/30 fully-typed schemas, median description 253 chars
latency7 / 10initialize round-trip 556ms
provenance12 / 15description present; no repository URL; version 1.0.1; namespace bot.mailbox matches endpoint/repo

Score 94/100 · latency 556ms · 30 tools · auth: open

Connect your agent

Claude Code:

claude mcp add --transport http mailbox https://mailbox.bot/api/mcp

Generic MCP client config:

{ "mcpServers": { "mailbox": { "type": "http", "url": "https://mailbox.bot/api/mcp" } } }

MCP Queen is a graded index, not a middleman — your agent connects directly to the server above. Check the grade and evidence first; that's the point. Share this server: permalink https://mcpqueen.com/s/bot.mailbox/mailbox · referral link https://mcpqueen.com/go/bot.mailbox/mailbox (counts as “routed via the queen”).

Own this server? Embed your grade badge

Live badge, re-probed continuously — put it in your README:

MCP Queen grade badge for bot.mailbox/mailbox

[![MCP Queen grade](https://mcpqueen.com/badge/bot.mailbox/mailbox.svg)](https://mcpqueen.com/s/bot.mailbox/mailbox)

Think the grade is wrong? Fix the finding the evidence shows, then the next probe cycle picks it up automatically (full cycle ≈ 3 days) — or open a dispute via the MCP endpoint.

Queen Watch

Email alerts when the grade changes or the endpoint stops answering. Double-opt-in, one-click unwatch, free while in beta.

Probe history

When (UTC)GradeScoreLatency
2026-07-12 20:46A94556ms

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