customerio-hello-world
Create a minimal working Customer.io example. Use when learning Customer.io basics, testing SDK setup, or creating your first identify + track integration. Trigger: "customer.io hello world", "first customer.io message", "test customer.io", "customer.io example", "customer.io quickstart".
85
83%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Passed
No known issues
Quality
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 skill description with excellent trigger terms and clear completeness, explicitly covering both what the skill does and when to use it. The main weakness is that the specificity of concrete actions could be slightly more detailed—listing what the example actually produces (e.g., a Node.js script, specific API calls) would strengthen it. Overall, it's well-crafted for skill selection purposes.
Suggestions
Add more specific concrete actions, e.g., 'Generates a Node.js script that calls the Customer.io identify and track APIs' to improve specificity.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | It names the domain (Customer.io) and mentions some actions ('create a minimal working example', 'identify + track integration', 'testing SDK setup'), but doesn't list multiple concrete actions comprehensively—e.g., it doesn't specify what the example includes beyond 'identify + track'. | 2 / 3 |
Completeness | Clearly answers both 'what' (create a minimal working Customer.io example with identify + track integration) and 'when' (learning basics, testing SDK setup, creating first integration) with explicit trigger terms. | 3 / 3 |
Trigger Term Quality | Explicitly lists natural trigger phrases users would say: 'customer.io hello world', 'first customer.io message', 'test customer.io', 'customer.io example', 'customer.io quickstart'. These are realistic and cover common variations well. | 3 / 3 |
Distinctiveness Conflict Risk | Very specific niche—Customer.io hello world / quickstart examples. The explicit trigger terms and narrow scope (first example, basics, SDK setup) make it unlikely to conflict with other skills. | 3 / 3 |
Total | 11 / 12 Passed |
Implementation
77%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-structured, highly actionable Customer.io quickstart with executable code examples and good verification steps. Its main weakness is scope creep — it covers four distinct operations (identify, track, anonymous track, transactional email) which makes it longer than a typical 'hello world' warrants. The duplication between step-by-step examples and the complete example adds unnecessary tokens.
Suggestions
Trim the scope to just identify + track (the two fundamental operations) and move anonymous events and transactional email to separate referenced skills or a 'See also' section.
Remove the complete example section or replace it with a link to a separate file, since it largely duplicates Steps 1-2.
Remove inline comments that restate what the 'Key rules' sections already explain (e.g., the comment about identify creating/updating users).
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill is mostly efficient with good code examples, but includes some unnecessary commentary (e.g., explaining what identify() does when the code and comments already show it, the 'Key rules' sections repeat information partially visible in code comments). The complete example at the end largely duplicates Steps 1-2. The anonymous event tracking and transactional email sections add significant length beyond what a 'hello world' needs. | 2 / 3 |
Actionability | All code examples are fully executable TypeScript with real imports, proper client initialization, and copy-paste ready snippets. The complete example includes a runnable script with the exact command to execute it. Key gotchas like Unix seconds vs milliseconds and snake_case naming are specific and actionable. | 3 / 3 |
Workflow Clarity | Steps are clearly numbered and sequenced with explicit dependencies (identify before track). Step 5 provides a concrete verification checklist in the dashboard. The error handling table serves as a troubleshooting feedback loop. The workflow progresses logically from identify → track → anonymous → transactional → verify. | 3 / 3 |
Progressive Disclosure | The skill has good section structure and links to external resources, but it's quite long for a 'hello world' skill. The anonymous events and transactional email sections could be referenced as separate guides rather than inlined. The complete example duplicates earlier content rather than being in a separate file. | 2 / 3 |
Total | 10 / 12 Passed |
Validation
81%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 9 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
allowed_tools_field | 'allowed-tools' contains unusual tool name(s) | Warning |
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 9 / 11 Passed | |
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