Content
80%Weight 40%Scale 1-5Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
A disciplined, token-efficient interpretive companion skill: it covers exactly what the technique skills do not (evidentiary limits, safety envelope, what does and does not constitute proof) while deferring implementation to live schemas and sibling skills. Its main gap is the absence of any ordered evidence-capture sequence for the authorized write-test path it describes.
Suggestions
Add a compact ordered checklist for separately authorized write tests (capture baseline → confirm read-only/verified behavior → execute → verify telemetry remains intact → restore baseline → document), which would raise workflow clarity without much token cost.
Include one concrete method for confirming a command is read-only before use (e.g., dry-run flags or a verification command per tool family), since tool defaults differ and the current guidance stops at 'confirm'.
Optionally name the sibling ICS technique skills explicitly (or their lookup path) so the delegation in 'Use the relevant existing technique skills' is unambiguous.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The ~24-line body is lean and assumes Claude's competence: 'Passive captures and read-only identification can reveal vendor, firmware, unit IDs, function codes' and 'Tools such as modbus-cli, python-snap7 and OPC UA clients differ in default behavior' add non-obvious, situation-specific facts with zero padding and no explanation of concepts Claude already knows. It fits the anchor 'Lean and efficient; every token earns its place' rather than 4, where some trimming would still be possible. | 5 / 5 |
Actionability | Concrete, checkable guidance dominates ('confirm a command is read-only before use', 'Capture baseline state and restoration evidence', 'Preserve network segment, device identity and observation timestamps'), and the absence of code is acceptable for an instruction-only skill. It falls short of 5 because executable specifics (e.g., how to actually confirm a command is read-only) are delegated to other skills rather than even briefly specified here. | 4 / 5 |
Workflow Clarity | There is no step sequence — the skill explicitly states 'they do not define an engagement stage order' — yet validation checkpoints for the risky operation are present ('Capture baseline state and restoration evidence for any separately authorized write test', 'loss of telemetry during a test is a blocker'), placing it above anchor 2 (validation absent) but below anchor 4 (clear sequence). No ordered checklist or feedback loop exists for the write-test path. | 3 / 5 |
Progressive Disclosure | The skill is under 50 lines, has no bundle files (no references/, scripts/, or assets/ exist), needs no external references, and is cleanly organized under '## Industrial protocol evidence' and '## State and safety context'. Per the simple-skill guideline this earns 5 with well-organized sections alone. | 5 / 5 |
Total | 17 / 20 Passed |