io.github.afferens/mcp-server
afferens
Is the io.github.afferens/mcp-server MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.
Real-time physical perception for AI agents — vision, spatial, acoustic, environmental
alive probed 2026-11-14 · unchanged since 2026-10-30
- Run it
- npx -y @afferens/mcp-server@0.2.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- afferens 0.2.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- 0.2 % of a 1M context window
- Count
- 1.6k tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 1.6k. The o200k_base estimate is 849. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/afferens/afferens-mcp
- Registry
- active, updated 2026-06-07 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.84×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| afferens_actuate | 386 | 210 | 25 % |
| afferens_ingest | 356 | 194 | 23 % |
| afferens_perceive | 327 | 178 | 21 % |
| afferens_verify | 323 | 176 | 21 % |
| afferens_demo | 167 | 91 | 11 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
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- io.github.aethynio/aethyn-browser-mcp · alive
- Computer Use Turbo io.github.afaaq-io/computer-use-turbo · alive
- io.github.afable702/vault-mcp-tools · not found
- Baserow Schema MCP io.github.aficiomaquinas/mcp-baserow-schema · alive
- Bacon Services io.github.afmontoya/baconservices-mcp · alive
- io.github.africa-api/africa-api-mcp · alive
- Doktor io.github.afsozer/doktor-mcp · alive
Servers that mention environmental or perception.
- GroundTruth - Environmental Records ai.agentlookups/groundtruth · alive
- CaptureOneAI Web Perception com.captureoneai/web-perception · alive
- FacilityProof com.davisvillelabs/facilityproof · not MCP
- E2LLM com.e2llm/element-to-llm · needs auth
- com.geiant/mcp-perception · alive
- UK Environmental Intelligence MCP Server from MCPBundles com.mcpbundles/uk-environmental-intelligence · needs auth
- EPA EJScreen com.olyport/ejscreen · alive
- PixelGust Environmental Data com.pixelgust/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.