dev.scratchrun/mcp
ScratchRun
Ephemeral MicroVM-isolated code execution for AI agents. Fresh VM per call, hard-purged after.
alive probed 2026-10-19
1tools
≈ 333tokens, estimate
≈ 0.2 %of Claude's 200k window
0.2×the median server
281 msto initialize
4 msto list tools
- Run it
- npx -y @scratchrun/mcp-server@0.1.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- scratchrun 0.1.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- ≈ <0.1 % of a 1M context window, estimate
- Claude count
- The count_tokens endpoint refused the tool schemas: invalid x-api-key. The estimate stands in.
- Repository
- https://github.com/ar-blues/scratchrun-mcp
- Registry
- active, updated 2026-08-04 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
Estimates with the o200k_base tokenizer.
| Tool | o200k estimate | Share of this server |
|---|---|---|
| scratchrun_exec | 333 | 100 % |
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 Anthropic count_tokens endpoint refused the tool schemas (invalid x-api-key). A client that validates schemas can refuse them too.