dev.postbag/mcp
postbag-mcp
Form backend that routes: one tool per Postbag API operation, plus quickstart and explain.
alive probed 2026-10-15
64tools
16ktokens in Claude Opus 5.5
16ktokens in Claude Code
7.8 %of a 200k context window
8.8ko200k_base estimate
352 msto initialize
8 msto list tools
- Run it
- npx -y @postbag/mcp@0.1.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- postbag-mcp 0.1.0
- Capabilities
- resources, tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-15. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/faahim/postbag
- Website
- https://postbag.dev/for-ai-agents/
- Registry
- active, updated 2026-08-21 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| streams_create | 480 | 5 % |
| forms_create | 479 | 5 % |
| streams_update | 474 | 5 % |
| destinations_create | 470 | 5 % |
| forms_update | 449 | 5 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/dev.postbag/mcp)
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.