mcpcost

io.github.jarahkon/hass-mcp-server

Home Assistant MCP Server

Is the Home Assistant MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-01.

MCP server for full Home Assistant control — dashboards, files, automations, add-ons, and more

alive probed 2026-11-15 · unchanged since 2026-11-01

66tools
10ktokens in Claude
5.0 %of Claude's 200k window
4.0×the median server
657 msto initialize
49 msto list tools
Run it
npx -y @jarahkon/hass-mcp-server@1.0.6 (stdio, probed in a container with the network off)
Host
npmjs.com
Reports itself as
hass-mcp-server 1.0.6
Capabilities
tools
Instructions
none
Of a 1M window
1.0 % of a 1M context window
Count
10k tokens in Claude, exact, measured 2026-10-25. With the Claude Code prefix mcp__…__ on each tool name: 11k. The o200k_base estimate is 5.5k. Counted again when the tool definitions change. Method.
Repository
https://github.com/jarahkon/hass-mcp-server
Website
https://github.com/jarahkon/hass-mcp-server
Registry
active, updated 2026-03-25 · 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, 1.83×.

Tool≈ Claude tokenso200k estimateShare of this server
ha_call_service3702024 %
ha_create_helper3551944 %
ha_create_dashboard3151723 %
ha_update_dashboard2761513 %
ha_create_backup2621433 %

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 hass.

History

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

ProbedResultInitToolsClaudeo200k
2026-10-25 06:52alive420 ms6610k5.5k
2026-10-18 06:41alive657 ms665.5k

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