io.github.polaris-smart/agent-mailbox
agent-mailbox — Mailbox and Wake System for AI Agent Teams
Is the agent-mailbox MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-27.
Mailbox + wake system for AI agent teams: letters always land, right agent wakes, quiet otherwise.
alive probed 2026-11-15 · unchanged since 2026-10-27
- Run it
- uvx agent-mailbox@0.7.6 (stdio, probed in a container with the network off)
- Host
- pypi.org
- Reports itself as
- agent-mailbox
- Capabilities
- prompts, resources, tools
- Instructions
- 943 characters
- Of a 1M window
- 0.5 % of a 1M context window
- Count
- 4.5k tokens in Claude Opus 5.5, exact, measured 2026-10-27. With the Claude Code prefix mcp__…__ on each tool name: 4.7k. The o200k_base estimate is 2.6k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/polaris-smart/agent-mailbox
- Registry
- active, updated 2026-09-30 · registry entry
- Changes
- 2 recorded, reachable in 2 of them. A row is added when the result, the tool count or the cost changes.
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.73×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| mailbox_send | 1 124 | 649 | 25 % |
| mailbox_check | 662 | 382 | 15 % |
| mailbox_thread | 419 | 242 | 9 % |
| mailbox_list | 348 | 201 | 8 % |
| task_move | 331 | 191 | 7 % |
Compare this server with others.
More servers
Other registry entries on pypi.org, the ones next to this name; all of them.
- io.github.pkotecha-eng/aria-mcp-server · alive
- SanAlert io.github.plrojek/sanalert-mcp · alive
- io.github.pmgarg/cgraphy · crashed on start
- thread-keeper io.github.po4erk91/thread-keeper · crashed on start
- catalejo io.github.polfananas/catalejo · needs args
- Span io.github.pontivus-com/span · needs args
- io.github.pouriaetab/llmledger · alive
- PlatformIO io.github.powerdragonfire/platformio.mcp · alive
Servers that mention mailbox.
- mailmcp ai.mailmcp/mailmcp · needs auth
- ReplyLayer ai.replylayer/replylayer · needs auth
- Conduit Mail app.conduitmail/conduit-mail · needs auth
- JustEmails app.justemails/mcp · needs auth
- mailbox.bot bot.mailbox/mailbox · alive
- Multi Mail co.lumman/mail · needs auth
- adbtd com.adbtd/mcp · needs auth
- com.anymailmcp/mail · needs auth
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-27 06:57 | alive | 2.0 s | 14 | 4.5k | 2.6k |
| 2026-10-20 06:44 | alive | 3.0 s | 14 | 2.6k |
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
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 initialize and tools/list. Nothing to fix.