io.github.PromptBranch/promptbranch
PromptBranch
Local-first MCP server for versioning, searching, evaluating, and improving AI prompts.
alive probed 2026-10-19
6tools
≈ 992tokens, estimate
≈ 0.5 %of Claude's 200k window
0.7×the median server
233 msto initialize
10 msto list tools
- Run it
- npx -y @promptbranch/mcp@0.2.6 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- promptbranch 0.2.6
- 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/PromptBranch/promptbranch
- Website
- https://promptbranch.app
- Registry
- active, updated 2026-09-05 · 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 |
|---|---|---|
| get_prompt | 239 | 24 % |
| report_run | 230 | 23 % |
| suggest_variation | 176 | 18 % |
| search_prompts | 143 | 14 % |
| add_note | 130 | 13 % |
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.