Review and compact prompts, docs, and AI-agent skills to save tokens, preserving structure.
CompactPrompt MCP server exists for a simple reason — assistants are far more useful when they can act on CompactPrompt directly instead of describing what you should do. Review and compact prompts, docs, and AI-agent skills to save tokens, preserving structure.
CompactPrompt shortens the text you send to an AI model while preserving its meaning. The result costs less to run, returns faster, and is less likely to exceed the model's input limit. The common case is a single function call, and no background in machine learning is required to use it.
Installation goes through your MCP client rather than a global install: point it at compactprompt on PyPI and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.
Once CompactPrompt is connected, these are the calls the assistant has available:
Engine — ApproachLLMLingua — Microsoft's established tool, which uses a small model to decide what to removeCaveman — Rewrites the text in a concise style, preserving code, links, and headingsField — MeaningAmong the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. CompactPrompt's toolset — Engine, LLMLingua, Caveman and 1 more — is a fair guide to whether it matches your workflow. It is maintained by gtkcyber; worth a glance at recent repository activity before you build anything load-bearing on it.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| Engine | Approach |
| LLMLingua | Microsoft's established tool, which uses a small model to decide what to remove. |
| Caveman | Rewrites the text in a concise style, preserving code, links, and headings. |
| Field | Meaning |
{
"mcpServers": {
"compactprompt": {
"command": "uvx",
"args": ["compactprompt"]
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
Kill hallucinated APIs — version-accurate, up-to-date library documentation injected straight into context.
Microsoft's official browser automation server — drive a real browser through the accessibility tree, no screenshots needed.
GitHub's official server — repos, issues, pull requests, Actions and code security, straight from your assistant.
Issue tracking at the speed of conversation — Linear's official hosted server with OAuth and zero install.
Local repository surgery — status, diffs, commits, branches and history for any repo on disk.
Timezone sanity for AI — current time anywhere and correct conversions, without the model doing date math.