com.pulsemcp/slack
slack-workspace-mcp-server
MCP server for Slack — read/write messages, manage threads, and react to messages.
alive probed 2026-10-14
9tools
4.4ktokens in Claude Opus 5.5
4.5ktokens in Claude Code
2.2 %of a 200k context window
2.7ko200k_base estimate
410 msto initialize
6 msto list tools
- Run it
- npx -y slack-workspace-mcp-server@0.0.7 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- slack-workspace-mcp-server 0.0.7
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-14. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/pulsemcp/mcp-servers
- Registry
- active, updated 2026-06-14 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| slack_upload_snippet | 372 | 14 % |
| slack_react_to_message | 370 | 14 % |
| slack_reply_to_thread | 306 | 11 % |
| slack_update_message | 299 | 11 % |
| slack_get_thread | 296 | 11 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/com.pulsemcp/slack)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.