juliusbrussee/caveman
Compressed caveman-style prose for AI coding agents — cuts ~65% output tokens while keeping full technical accuracy
96
100%
Does it follow best practices?
Impact
96%
1.00xAverage score across 38 eval scenarios
Passed
No known issues
Quality
Discovery
100%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This is a strong skill description that clearly communicates what the skill does (compressed communication with specific intensity levels), when to use it (multiple explicit trigger phrases), and how it's unique (caveman-style brevity with technical accuracy). The description is concise yet comprehensive, with excellent trigger term coverage and a clear niche that won't conflict with other skills.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple concrete capabilities: cuts token usage ~75%, maintains technical accuracy, supports specific intensity levels (lite, full, ultra, wenyan-lite, wenyan-full, wenyan-ultra). These are specific, actionable details. | 3 / 3 |
Completeness | Clearly answers both 'what' (ultra-compressed communication that cuts tokens ~75% while keeping technical accuracy, with multiple intensity levels) and 'when' (explicit 'Use when' clause with multiple trigger phrases plus auto-trigger condition). | 3 / 3 |
Trigger Term Quality | Excellent coverage of natural trigger terms: 'caveman mode', 'talk like caveman', 'use caveman', 'less tokens', 'be brief', '/caveman', and 'token efficiency'. These are phrases users would naturally say. | 3 / 3 |
Distinctiveness Conflict Risk | Highly distinctive niche — 'caveman mode' communication style with specific intensity levels is unlikely to conflict with any other skill. The trigger terms are unique and specific to this particular behavior. | 3 / 3 |
Total | 12 / 12 Passed |
Implementation
100%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
Excellent skill that exemplifies its own principles — concise, well-structured, and highly actionable. The intensity level table with concrete examples at each level is particularly effective, and the Auto-Clarity section wisely carves out safety exceptions for destructive operations. The wenyan variants add creative depth without bloating the core content.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill practices what it preaches — it's written in its own caveman style, extremely lean, every token earns its place. No unnecessary explanations of concepts Claude already knows. | 3 / 3 |
Actionability | Highly actionable with concrete before/after examples at each intensity level, specific rules for what to drop/keep, exact trigger phrases, and clear patterns to follow. The examples are copy-paste-ready behavioral templates. | 3 / 3 |
Workflow Clarity | For a behavioral/communication skill, the workflow is crystal clear: activation triggers, persistence rules, intensity switching via /caveman command, auto-clarity exceptions for safety-critical situations, and explicit deactivation conditions. The Auto-Clarity section serves as a validation checkpoint for when to break the pattern. | 3 / 3 |
Progressive Disclosure | Well-organized with clear sections (Persistence, Rules, Intensity, Auto-Clarity, Boundaries). The intensity table provides excellent at-a-glance navigation. For a skill under 50 lines with no need for external references, this is appropriately structured. | 3 / 3 |
Total | 12 / 12 Passed |
Validation
100%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
Reviewed
Table of Contents