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".

Quality

81%

Does it follow best practices?

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Securityby

Passed

No findings from the security scan

Quality

Content

85%Weight 40%Scale 1-3

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The skill is highly actionable and concise, with executable code and tight key-rules annotations throughout. Its weakness is structure: a large inline reference section duplicates content already in the bundle, the bundle file is never referenced from the body, and the workflow lacks explicit validation feedback loops between API calls.

Suggestions

Move the per-step API detail (Steps 1–4) into references/implementation-guide.md and keep SKILL.md as a concise overview that links to it, reducing the inline wall of code.

Add an explicit validation checkpoint between identify and track (e.g., confirm the profile appears or check the API response) and frame the error-handling table as a validate -> fix -> retry loop.

Either link references/implementation-guide.md from the body or remove it; an unreferenced bundle file is not navigable progressive disclosure.

Dimension	Reasoning	Score
Conciseness	The body is lean: code-first steps with tight "Key rules" bullets and no explaining of what Customer.io or an SDK is, so every token earns its place.	3 / 3
Actionability	Each step ships complete, copy-paste TypeScript with real imports, env vars, and a runnable "Complete Example" plus an exact run command (`npx tsx scripts/hello-customerio.ts`).	3 / 3
Workflow Clarity	Steps are clearly sequenced 1–5 with a dashboard verification step, but the Track API calls lack a validation/feedback checkpoint (no check that identify succeeded before tracking, no retry guidance) and the error-handling table is diagnostic rather than a validate-then-retry loop, which caps the score at 2.	2 / 3
Progressive Disclosure	The body is a monolithic ~185-line wall of inline API reference (four full code blocks plus a complete example) with the one bundle file (references/implementation-guide.md) never linked or signaled from SKILL.md, leaving content that should be split instead inline and references unnavigable.	1 / 3
	Total	9 / 12 Passed

Description

77%Weight 40%Scale 1-3

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 clearly states concrete actions (identify, track, send email) with an explicit Use-when clause and brand-specific triggers, giving it strong completeness and distinctiveness. Trigger term coverage is solid but the phrases are repetitive variants rather than a broad spread of natural terms.

Suggestions

Broaden trigger terms with varied natural phrasings such as "send first customer.io email", "customer.io SDK test", or "customer.io identify and track" instead of near-duplicate "hello world"/"example"/"quickstart" variants.

Tighten the description to a single flowing sentence or two; the multi-line line breaks and repeated Trigger label add formatting without adding information.

Dimension	Reasoning	Score
Specificity	"identify a user", "track an event", and "send a transactional email" name three concrete actions on a specific domain, matching the multiple-specific-actions anchor.	3 / 3
Completeness	It states what the skill does in the first sentence and includes an explicit "Use when..." clause plus a Trigger block, answering both what and when.	3 / 3
Trigger Term Quality	Trigger phrases like "customer.io hello world", "test customer.io", and "customer.io example" are natural but are near-duplicates lacking variation (no "SDK setup" phrasings a user would actually say beyond what's listed), so coverage is good but not comprehensive.	2 / 3
Distinctiveness Conflict Risk	The Customer.io niche and its brand-specific trigger terms are narrow and unlikely to conflict with unrelated skills.	3 / 3
	Total	11 / 12 Passed

Validation

81%

Warnings & errors only

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 13 / 16 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
referenced_paths_exist	Referenced path issues: 2 missing	Warning

	Total	13 / 16 Passed

Repository: jeremylongshore/claude-code-plugins-plus-skills
Path: plugins/saas-packs/customerio-pack/skills/customerio-hello-world/SKILL.md
Commit: 4c47e33

Reviewed: about 8 hours ago

Table of Contents

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