Names the domain (tessl tiles - rules, docs, skills) and describes the general action (investigates, finds or creates), but lacks specific concrete actions like 'analyzes error patterns', 'generates rule files', or 'updates documentation'.

Clearly answers both what ('Investigates a problem area and finds or creates a tessl tile') and when ('Use when agents keep making the same mistakes around a library, design pattern, or convention') with explicit trigger guidance.

Includes some relevant terms like 'same mistakes', 'library', 'design pattern', 'convention', but misses common variations users might say like 'recurring errors', 'repeated issues', 'agent keeps failing', 'wrong approach'.

Has a clear niche focused on tessl tiles and agent mistake patterns - unlikely to conflict with general coding skills or documentation skills due to the specific 'agents making repeated mistakes' trigger.

The skill is reasonably efficient but includes some unnecessary explanation (e.g., explaining what tiles contain when Claude could infer this). The 'Important Notes' section repeats guidance already covered in the phases.

Provides clear phase structure and specific commands like `tessl install` and `tessl status`, but delegates the actual tile creation to another skill rather than providing executable guidance. The interview questions are helpful but the core action is outsourced.

Excellent multi-phase workflow with clear sequencing (Interview → Search → Create → Verify). Each phase has explicit steps, decision points (install existing vs create new), and a verification checkpoint at the end.

Content is well-organized with clear sections, but everything is inline in one file. The delegation to `tessleng/tile-creator` is appropriate progressive disclosure, but the skill itself could benefit from separating the detailed interview questions or search strategies into referenced materials.