Individual skill

s4h-writing-technical

Writes and audits technical documentation, API docs, user guides, and specifications for completeness, sequence, precision, and audience calibration. Use when documentation is confusing, assumes too much knowledge, or leaves gaps a user can't bridge. Triggers: 'technical writing', 'API documentation', 'write documentation', 'user guide', 'technical docs', 'the documentation is confusing', 'write a spec', 'docs are missing steps'.

skills/s4h-writing-technical/SKILL.md

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Jul 15, 2026
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# Writing: Technical

Technical writing fails when it is written for the person who already knows how the system works. The person who already knows doesn't need the document. The document is for the person who doesn't know — and that person's experience of the document is the only test that matters. The test is simple: can a reader with the assumed knowledge execute the task using only this document? If they cannot, something is missing.

This is a higher bar than it sounds. Technical writers who know the system well have difficulty seeing the gaps — because for them, nothing is missing. The prerequisite knowledge is so obvious it doesn't seem worth stating. The step that requires understanding the system's mental model doesn't look like a step — it looks like common sense. These invisible assumptions are where most documentation fails.

The five failure modes in technical writing:

**Audience miscalibration:** Assumes knowledge the reader doesn't have, or over-explains what the reader already knows. Both are wrong. The first makes the document unusable; the second makes it condescending.

**Incompleteness:** Steps that require bridging knowledge the document doesn't provide. Often invisible to the writer because the knowledge is automatic.

**Sequence errors:** Prerequisites stated after they are needed, steps in the wrong order, troubleshooting information buried after the task it applies to.
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