io.github.handset-hq/handset
handset
A business phone system for AI agents: send texts, place calls, read transcripts, buy numbers.
alive probed 2026-10-15
15tools
2.5ktokens in Claude Opus 5.5
2.6ktokens in Claude Code
1.2 %of a 200k context window
1.4ko200k_base estimate
234 msto initialize
11 msto list tools
- Run it
- npx -y @handset/mcp@0.1.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- handset 0.1.0
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-15. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/handset-hq/handset-ui
- Website
- https://docs.handset.dev/ai.html
- Registry
- active, updated 2026-08-18 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| send_message | 191 | 14 % |
| make_call | 191 | 14 % |
| buy_number | 123 | 9 % |
| create_tenant | 104 | 7 % |
| get_call | 96 | 7 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.handset-hq/handset)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.