customerio-reliability-patterns
Implement Customer.io reliability and fault-tolerance patterns. Use when building circuit breakers, fallback queues, idempotency, or graceful degradation for Customer.io integrations. Trigger: "customer.io reliability", "customer.io resilience", "customer.io circuit breaker", "customer.io fault tolerance".
80
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 ./plugins/saas-packs/customerio-pack/skills/customerio-reliability-patterns/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 skill description with strong completeness and distinctiveness. It clearly identifies when to use the skill with explicit trigger terms and a 'Use when' clause. The main weakness is that the capabilities are described at the pattern level rather than as concrete actions the skill performs, making it slightly less specific than ideal.
Suggestions
Replace abstract pattern names with concrete actions, e.g., 'Generates circuit breaker wrappers, implements retry logic with exponential backoff, creates fallback queue handlers, and adds idempotency keys for Customer.io API calls.'
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (Customer.io reliability) and lists some specific patterns (circuit breakers, fallback queues, idempotency, graceful degradation), but these are more pattern categories than concrete actions. It doesn't describe what the skill actually produces or does (e.g., 'generates retry logic', 'creates dead letter queue handlers'). | 2 / 3 |
Completeness | Clearly answers both 'what' (implement reliability and fault-tolerance patterns including circuit breakers, fallback queues, idempotency, graceful degradation) and 'when' (explicit 'Use when' clause and 'Trigger' terms). Both components are present and explicit. | 3 / 3 |
Trigger Term Quality | Includes explicit trigger terms that users would naturally say: 'customer.io reliability', 'customer.io resilience', 'customer.io circuit breaker', 'customer.io fault tolerance'. These are natural phrases a developer would use when seeking this kind of help, with good coverage of variations. | 3 / 3 |
Distinctiveness Conflict Risk | Highly distinctive due to the narrow niche of Customer.io-specific reliability patterns. The combination of Customer.io + reliability/fault-tolerance creates a clear, unique scope that is unlikely to conflict with general reliability skills or other Customer.io skills. | 3 / 3 |
Total | 11 / 12 Passed |
Implementation
64%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill excels at actionability with fully executable, production-quality TypeScript code for each reliability pattern. However, it's overly long for a SKILL.md — the six complete code examples should be split into referenced files with the main skill serving as an overview. The lack of validation/testing steps for these critical reliability patterns (how to verify the circuit breaker trips correctly, how to test failover) is a meaningful gap.
Suggestions
Extract individual pattern implementations into separate files (e.g., circuit-breaker.md, retry-patterns.md) and keep SKILL.md as a concise overview with pattern descriptions and links.
Add validation steps for each pattern: how to test the circuit breaker trips at the right threshold, how to verify the fallback queue processes correctly, and how to simulate failure scenarios.
Remove Pattern 4 (combined client) from the main file — Claude can compose the individual patterns together, and showing the composition inline is redundant given the individual pattern examples.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill provides substantial executable code which is valuable, but the sheer volume (~250 lines of TypeScript) is heavy for a SKILL.md overview. The combined client pattern (Pattern 4) repeats logic that could be inferred from the individual patterns. Some patterns like the health check endpoint are straightforward enough that Claude could generate them without a full example. | 2 / 3 |
Actionability | Every pattern includes fully executable TypeScript code with proper imports, types, and realistic configurations. The code is copy-paste ready with real library usage (bullmq, customerio-node), specific error handling for status codes, and concrete configuration values. | 3 / 3 |
Workflow Clarity | The pattern selection guide and reliability checklist provide good structure, but there's no explicit workflow for implementing these patterns in sequence. There are no validation checkpoints — e.g., how to verify the circuit breaker is working, how to test the fallback queue, or how to validate the integration before going to production. For patterns involving queues and destructive retry logic, this is a notable gap. | 2 / 3 |
Progressive Disclosure | The content is largely monolithic — all six patterns are fully inline with complete code examples, making this a very long document. The patterns could be split into separate files with the SKILL.md serving as an overview with brief descriptions and links. The reference to 'customerio-load-scale' at the end shows some awareness of progressive disclosure but the main content doesn't practice it. | 2 / 3 |
Total | 9 / 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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