Content
57%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.
The body is a well-organized, largely executable FFI reference with genuinely useful error-recovery guidance, but it behaves as a monolithic API document rather than an overview pointing to bundle files. Its two advertised references are missing entirely, and several snippets contain placeholders or undefined variables that break copy-paste readiness. Splitting reference material into the promised files and completing the code examples would address the weakest dimensions.
Suggestions
Actually create `references/type-mappings.md` and `references/performance.md` (or remove the "When to Load References" section) — both are advertised but missing from the bundle, and move the inline FFI type table and callback details there to slim SKILL.md toward an overview.
Replace non-executable placeholders (`dlopen(..., { ... })`, undefined `arrayPtr`/`length`/`cPointer`) with complete, copy-paste-ready examples, including the missing `toArrayBuffer` import in the callbacks section.
Add validation checkpoints around risky operations: e.g. verifying a returned pointer is non-null before dereferencing, and checking dlopen error handling before calling symbols, to pair with the existing Common Errors table.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The 327-line body is essentially an inlined API reference: the FFI types section enumerates every type, every snippet repeats its imports, and the platform-path section shows three variants of the same task. Prose is lean (no explanations of concepts Claude already knows), so it clears anchor 2 but fits anchor 3 ("mostly efficient but could be tightened"). | 3 / 5 |
Actionability | Most snippets are executable TypeScript covering the common cases (quick start, strings, buffers, callbacks, SQLite), but several blocks use non-executable `{ ... }` placeholders, the callback example references undefined `arrayPtr`/`length` and an unimported `toArrayBuffer`, and `lib.symbols.free(cPointer)` uses undefined variables. Minor gaps place it at anchor 4 rather than 5. | 4 / 5 |
Workflow Clarity | Topics are logically sequenced (loading → types → functions → strings → pointers → structs → callbacks → example → memory → errors) and the Common Errors table gives some recovery guidance, but there are no validation checkpoints for risky operations like memory management where segfaults are expected failures. Sequence without checkpoints matches anchor 3. | 3 / 5 |
Progressive Disclosure | The "When to Load References" section is a clearly signaled navigation aid, but both referenced files (`references/type-mappings.md`, `references/performance.md`) do not exist in the bundle, and ~330 lines of type/API reference that belong in separate files are fully inlined. Structure is present (not anchor 2's minimal structure) but organization is compromised by dangling references and inlined bulk, matching anchor 3. | 3 / 5 |
Total | 13 / 20 Passed |