iii-channels
Binary streaming between workers via channels. Use when building data pipelines, file transfers, streaming responses, or any pattern requiring binary data transfer between functions.
76
70%
Does it follow best practices?
Impact
—
No eval scenarios have been run
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./skills/iii-channels/SKILL.mdQuality
Discovery
89%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This is a solid description that clearly communicates both what the skill does and when to use it. The 'Use when...' clause provides good trigger coverage with natural terms. The main weakness is that the 'what' portion could be more specific about the concrete actions or operations the skill teaches (e.g., creating channels, chunking data, connecting producers/consumers).
Suggestions
Add more specific concrete actions to the capability statement, e.g., 'Creates binary channels between worker functions, manages chunked data transfer, handles backpressure and stream completion.'
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (binary streaming between workers via channels) and some actions/patterns (data pipelines, file transfers, streaming responses), but doesn't list multiple concrete specific actions like 'create channels', 'chunk binary data', or 'connect producer/consumer workers'. | 2 / 3 |
Completeness | Clearly answers both 'what' (binary streaming between workers via channels) and 'when' with an explicit 'Use when...' clause listing four specific trigger scenarios (data pipelines, file transfers, streaming responses, binary data transfer between functions). | 3 / 3 |
Trigger Term Quality | Includes strong natural keywords users would say: 'data pipelines', 'file transfers', 'streaming responses', 'binary data transfer', 'channels', 'workers'. These cover common variations of how users would describe this need. | 3 / 3 |
Distinctiveness Conflict Risk | The combination of 'binary streaming', 'workers', and 'channels' creates a clear niche that is unlikely to conflict with general data processing or file handling skills. The focus on inter-worker binary transfer via channels is quite specific. | 3 / 3 |
Total | 11 / 12 Passed |
Implementation
50%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
The skill provides a reasonable overview of the channels pattern with clear API primitives and cross-references to language-specific implementations. However, it suffers from redundancy across sections, lacks complete executable examples in the body itself, and misses explicit error handling/validation steps for what is fundamentally a multi-step streaming workflow. The boilerplate 'When to Use' and 'Boundaries' sections consume tokens without adding actionable value.
Suggestions
Add a complete, minimal end-to-end executable example (e.g., TypeScript) showing channel creation, ref passing, writing, and reading — rather than relying solely on external reference files.
Consolidate redundant information: cross-language capability is mentioned in Key Concepts, Architecture, and Adapting This Pattern; binary chunking details appear in both Key Concepts and the primitives table.
Add explicit error handling and validation guidance: what happens on writer/reader disconnect, how to verify stream completion, and how to handle partial reads.
Remove or merge the generic 'When to Use' and 'Boundaries' sections — they add no channel-specific actionable information.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is mostly efficient but has some redundancy — the 'Key Concepts' section repeats information that appears again in 'Common Patterns' and 'Adapting This Pattern' (e.g., cross-language capability mentioned three times, binary chunking mentioned twice). The 'When to Use' and 'Boundaries' sections are boilerplate that add little value. | 2 / 3 |
Actionability | The skill provides API signatures and common code snippets but they are inline fragments rather than complete, executable examples. There's no full end-to-end example showing channel creation, passing refs, and consuming data — the reader is directed to reference files instead. The 'Common Patterns' section is closer to pseudocode snippets than copy-paste ready code. | 2 / 3 |
Workflow Clarity | The Architecture section describes the flow conceptually (create channel → pass ref → stream data) but lacks an explicit numbered sequence with validation checkpoints. There's no guidance on error handling, what happens if the writer closes unexpectedly, or how to verify the stream completed successfully. For a pattern involving binary streaming between workers, missing error recovery caps this at 2. | 2 / 3 |
Progressive Disclosure | The skill references three language-specific implementation files (channels.js, channels.py, channels.rs) which is good progressive disclosure structure, and cross-references other skills for boundary cases. However, no bundle files were provided to verify these references exist, and the main content itself has some sections that could be consolidated (e.g., 'When to Use' and 'Boundaries' are generic boilerplate that doesn't aid navigation). | 2 / 3 |
Total | 8 / 12 Passed |
Validation
100%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
- Repository
- iii-hq/iii
- Commit
d51a06d
- Reviewed
Table of Contents
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