io.github.cameronrye/activitypub-mcp
activitypub-mcp
Is the io.github.cameronrye/activitypub-mcp MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.
Read-only-by-default MCP server: let LLMs explore the Fediverse — Mastodon, Misskey, Pleroma.
alive probed 2026-11-14 · unchanged since 2026-10-30
- Run it
- npx -y activitypub-mcp@3.2.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- activitypub-mcp 3.2.1
- Capabilities
- prompts, resources, tools
- Instructions
- none
- Of a 1M window
- 0.5 % of a 1M context window
- Count
- 4.7k tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 5.0k. The o200k_base estimate is 2.8k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/cameronrye/activitypub-mcp
- Registry
- active, updated 2026-06-22 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.71×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| fetch-timeline | 509 | 297 | 11 % |
| get-public-timeline | 424 | 247 | 9 % |
| discover-instances | 408 | 238 | 9 % |
| search | 406 | 237 | 9 % |
| discover-actor | 388 | 226 | 8 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- SnapClap MCP io.github.calnflow/snapclap-mcp · not found
- Calypso Multimodal RAG MCP io.github.calypso-so/multimodal-rag-mcp-server · needs env
- io.github.cameron4316/hosannaith-mcp · alive
- io.github.cameroncooke/XcodeBuildMCP · alive
- io.github.camgitt/memoir · crashed on start
- Reddit Ads io.github.camlowe/mcp-server-reddit-ads · needs env
- sourcebolt io.github.candidloom-hub/sourcebolt · error
- Featureflip io.github.canopy-labs/featureflip · needs network
Servers that mention fediverse or mastodon.
- Schedule & Chill com.schedulenchill/mcp · needs auth
- reapx fediverse - Mastodon posts and instance timelines dev.reapx/mastodon-fediverse · needs auth
- Mastodon io.github.pipeworx-io/mastodon · alive
- Postbase io.github.postbasehq/postbase · needs auth
- NameHound app.namehound/namehound · alive
- dopost co.dopost/dopost · needs auth
- ScrapeMole Social dev.pages.scrapemole/social · not found
- io.github.mrfentmen/mastodon-mcp · 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.