io.github.brentspore/buildutilities-mcp
buildutilities
Deterministic dev utilities: UUIDs, hashes, encoding, JWT, cron, regex. No network, no API key.
alive probed 2026-10-19
20tools
≈ 2.6ktokens, estimate
≈ 1.3 %of Claude's 200k window
1.8×the median server
386 msto initialize
15 msto list tools
- Run it
- npx -y buildutilities-mcp@0.1.2 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- buildutilities 0.1.2
- Capabilities
- tools
- Instructions
- 356 characters
- Of a 1M window
- ≈ 0.3 % 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/brentspore/buildutilities-mcp
- Website
- https://buildutilities.com
- Registry
- active, updated 2026-09-09 · 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 |
|---|---|---|
| generate_password | 205 | 8 % |
| cron_next_runs | 181 | 7 % |
| test_regex | 171 | 7 % |
| format_json | 166 | 6 % |
| hash_text | 155 | 6 % |
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.