com.clawhard/postcard
Postcard
Is the Postcard MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-14.
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alive probed 2026-11-14 · HTTP 200
- Endpoint
- https://postcard.clawhard.com/mcp (streamable-http)
- Host
- postcard.clawhard.com
- Protocol
- 2025-11-25
- Reports itself as
- com.clawhard/postcard 1.0.0
- Capabilities
- prompts, resources, tools
- Instructions
- 890 characters
- Of a 1M window
- 0.1 % of a 1M context window
- Count
- 1.4k tokens in Claude Opus 5.5, exact, measured 2026-11-14. With the Claude Code prefix mcp__…__ on each tool name: 1.4k. The o200k_base estimate is 881. Counted again when the tool definitions change. Method.
- Website
- https://postcard.clawhard.com
- Registry
- active, updated 2026-11-13 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.57×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| postcard_check_link_preview | 713 | 453 | 51 % |
| postcard_check_preview_tags | 673 | 428 | 49 % |
Compare this server with others.
More servers
Servers that mention postcard.
- MailStream app.mailstream/mailstream · needs auth
- No Errands Mail com.noerrands/mail · needs auth
- Postedly com.postedly/send · needs auth
- Premier Letters com.premierletters/mcp · alive
- Vintage Postcard fr.vintage-postcard/boutique · alive
- PieterPost MCP io.github.neddes/pieterpost-mcp · not found
- PieterPost MCP io.github.pieterpost-com/pieterpost-mcp · needs auth
- Sendpaper io.github.ryan-tish/sendpaper · alive
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.
Fixed something? Probe it now, with the same steps as the daily run. This page updates with the next daily run.