Create a Gmail filter to automatically label, star, or categorize incoming messages.
81
77%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./skills/recipe-create-gmail-filter/SKILL.mdQuality
Discovery
67%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
The description is concise and specific about what it does—creating Gmail filters with concrete actions like labeling, starring, and categorizing. Its main weakness is the absence of an explicit 'Use when...' clause, which would help Claude know exactly when to select this skill. Adding trigger guidance and a few more natural keyword variations would make this a strong description.
Suggestions
Add a 'Use when...' clause, e.g., 'Use when the user wants to set up Gmail filters, auto-sort emails, organize their inbox, or create email rules.'
Include additional natural trigger terms users might say, such as 'email rules', 'inbox organization', 'auto-sort', 'email automation', or 'filter emails'.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: 'label, star, or categorize incoming messages' and specifies the context is creating a Gmail filter. These are clear, actionable capabilities. | 3 / 3 |
Completeness | Clearly answers 'what' (create a Gmail filter to label/star/categorize messages) but lacks an explicit 'Use when...' clause or equivalent trigger guidance, which caps this at 2 per the rubric. | 2 / 3 |
Trigger Term Quality | Includes good natural keywords like 'Gmail filter', 'label', 'star', 'categorize', and 'incoming messages', but misses common variations users might say such as 'email rules', 'auto-sort', 'inbox organization', 'archive', or 'email automation'. | 2 / 3 |
Distinctiveness Conflict Risk | Very specific niche: Gmail filters for message organization. The combination of 'Gmail filter' with specific actions like labeling and starring makes it clearly distinguishable from general email or productivity skills. | 3 / 3 |
Total | 10 / 12 Passed |
Implementation
87%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a well-crafted, concise skill that provides clear, executable commands for creating a Gmail filter. Its main weakness is the workflow gap around the LABEL_ID placeholder—users need to know to substitute the actual label ID from step 2's output into step 3's command, and there's no error handling guidance.
Suggestions
Add a brief note after step 2 indicating that the LABEL_ID returned should be substituted into step 3's command (e.g., 'Use the `id` from the response in the next step').
Add a brief error recovery note: what to do if filter creation fails or if the verification step shows unexpected results.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Very lean and efficient. No unnecessary explanations of what Gmail filters are or how they work. Every line is actionable. The prerequisite note is appropriately brief. | 3 / 3 |
Actionability | Provides fully concrete, copy-paste ready commands for each step with specific flags, parameters, and JSON payloads. The example uses realistic values (e.g., 'receipts@example.com', 'Receipts' label). | 3 / 3 |
Workflow Clarity | Steps are clearly sequenced and include a verification step (step 4). However, there's no guidance on what to do if verification fails, no mention of replacing the placeholder 'LABEL_ID' with the actual ID from step 2's output, and no error recovery feedback loop. | 2 / 3 |
Progressive Disclosure | For a simple, single-purpose skill under 50 lines, the content is well-organized with a clear prerequisite callout and numbered steps. No need for external references given the scope. | 3 / 3 |
Total | 11 / 12 Passed |
Validation
90%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 10 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
metadata_field | 'metadata' should map string keys to string values | Warning |
Total | 10 / 11 Passed | |
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