io.github.littlebearapps/outlook-assistant
Outlook Assistant
Is the Outlook Assistant MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-01.
Microsoft Outlook MCP server — 22 tools for email, calendar, contacts, and mailbox management.
alive probed 2026-11-14 · unchanged since 2026-11-01
- Run it
- npx -y @littlebearapps/outlook-assistant@3.14.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- outlook-assistant 3.14.1
- Capabilities
- tools
- Instructions
- 963 characters
- Of a 1M window
- 2.2 % of a 1M context window
- Count
- 22k tokens in Claude, exact, measured 2026-10-25. With the Claude Code prefix mcp__…__ on each tool name: 23k. The o200k_base estimate is 13k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/littlebearapps/outlook-assistant
- Website
- https://littlebearapps.com/builds/outlook-assistant
- Registry
- active, updated 2026-10-05 · 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, 1.67×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| search-emails | 2 566 | 1 535 | 11 % |
| manage-rules | 2 061 | 1 233 | 9 % |
| export | 1 944 | 1 163 | 9 % |
| manage-event | 1 608 | 962 | 7 % |
| folders | 1 371 | 820 | 6 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- io.github.litheonhq/author-mcp-server · alive
- io.github.lithtrix/lithtrix · alive
- io.github.litportnet/free-proxy-mcp · alive
- io.github.litportnet/litport-mcp · alive
- io.github.littlebearapps/outlook-mcp · not found
- io.github.littleblakew/msds-chain · not probed
- GhostBus io.github.littlestjames82-sys/ghostbus · alive
- Ownly io.github.liuh886/ownly · crashed on start
Servers that mention outlook.
- Calfeed ai.calfeed/calfeed · needs auth
- alfred_ ai.get-alfred/alfred · needs auth
- ai.powerline/inbox-preview · alive
- Domain Mail Check app.openkrill/mailcheck · alive
- Multi Mail co.lumman/mail · needs auth
- GlockApps — Inbox Placement Testing com.glockapps/mcp · needs auth
- MCPEmails com.mcpemails/emails · needs auth
- com.mintmcp/outlook-calendar · 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 |
|---|---|---|---|---|---|
| 2026-10-25 06:53 | alive | 277 ms | 22 | 22k | 13k |
| 2026-10-18 06:40 | alive | 421 ms | 22 | 13k |
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
- This server is in the heaviest 10 % of the registry. Its 5 most expensive tools are 43 % of the cost. Shorter descriptions, fewer optional parameters and fewer tools cut the cost. The command npx mcpcost --url <endpoint> --tools 50 lists every tool with its cost.