Content
88%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.
Highly actionable content with executable dual-SDK examples, explicit error handling, and a valuable CANNOT section. Minor gains available from deduplicating the Python/Node examples and splitting reference tables into a references file.
Suggestions
Trim duplication: drop the 'Validate Before Sending' pattern (or fold into one line) since Quickstart already demonstrates the `phone.valid` / `validation_errors` check, and show one SDK per pattern with a note that the call shape is identical in the other.
If the skill grows, move the data-package table, error-code table, and the CANNOT list into a `references/` file (e.g. `references/packages.md`) and keep SKILL.md as a lean overview with clearly signaled one-level links.
The CANNOT entry on batching ("Loop for bulk lookups") could name an explicit per-number error-continue checkpoint to make bulk-loop guidance as rigorous as the single-lookup flow.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Efficient with no concept over-explanation, but every pattern is duplicated in both Python and Node, and "Validate Before Sending" repeats the `phone.valid` check already shown in Quickstart. Not 5: minor duplication could be trimmed; not 3: it is not noticeably verbose. | 4 / 5 |
Actionability | Fully executable, copy-paste-ready code in both SDKs (e.g. `client.lookups.v2.phone_numbers("+15108675310").fetch()`, `fields="line_type_intelligence,sim_swap,caller_name"`) plus a concrete error-code table with fixes. Not 4: there are no gaps in covering the common cases. | 5 / 5 |
Workflow Clarity | The single-purpose read-only workflow is unambiguous (setup → fetch → validate → interpret) with explicit checkpoints and error recovery ("If `valid` is `false`, check `phone.validation_errors`", "Handle gracefully — do not attempt to send", 60601 → "Check regional coverage"). Not 4: validation steps are explicit, not merely implied. The batch/destructive cap does not apply since lookups are read-only. | 5 / 5 |
Progressive Disclosure | Well-organized single-file skill (Overview → Prerequisites → Quickstart → Key Patterns → Common Errors → CANNOT → Next Steps) with no bundle files; all inline content is decision-time-relevant. Not 5: the ~150-line reference material (package table, error codes, CANNOT list) is kept fully inline with no one-level reference split, fitting the anchor-4 profile with minor organization headroom. | 4 / 5 |
Total | 18 / 20 Passed |