mcpcost

com.extentos/mcp-server

@extentos/mcp-server

Is the com.extentos/mcp-server MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-26.

Build smart-glasses apps with AI agents: scaffold, validate, and simulate before real hardware.

alive probed 2026-11-14 · unchanged since 2026-10-26

36tools
33ktokens in Claude Opus 5.5
16.4 %of Claude's 200k window
13×the median server
388 msto initialize
11 msto list tools
Run it
npx -y @extentos/mcp-server@0.11.63 (stdio, probed in a container with the network off)
Host
npmjs.com
Reports itself as
@extentos/mcp-server 0.11.63
Capabilities
tools
Instructions
none
Of a 1M window
3.3 % of a 1M context window
Count
33k tokens in Claude Opus 5.5, exact, measured 2026-10-26. With the Claude Code prefix mcp__…__ on each tool name: 33k. The o200k_base estimate is 20k. Counted again when the tool definitions change. Method.
Repository
https://github.com/extentos/mcp-server
Website
https://extentos.com/docs/mcp-server
Registry
active, updated 2026-09-05 · registry entry
Changes
2 recorded, reachable in 2 of them. A row is added when the result, the tool count or the cost changes.

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.68×.

Tool≈ Claude tokenso200k estimateShare of this server
generateConnectionModule2 5011 4938 %
getEventLog2 2701 3557 %
injectAssistantUtterance1 8361 0966 %
createSimulatorSession1 7661 0545 %
getPlatformInfo1 7151 0245 %

Compare this server with others.

More servers

Other registry entries on npmjs.com, the ones next to this name; all of them.

Servers that mention hardware or scaffold.

History

We add a row when the result changes. A server with no change keeps its last row.

ProbedResultInitToolsClaudeo200k
2026-10-26 06:58alive578 ms3633k20k
2026-10-19 06:49alive388 ms3620k

Badge for the README

mcpcost: alive

The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.

Atom feed

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