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rc-backend

Use this skill when your backend needs to read or update RevenueCat state on Android. Covers the RevenueCat REST API (v1 subscribers endpoint, grant/revoke entitlements, attributes), secret vs public SDK API key usage, and why you do not build a receipt verification backend with RevenueCat.

72

Quality

91%

Does it follow best practices?

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SecuritybySnyk

Passed

No findings from the security scan

SKILL.md
Quality
Evals
Security

Quality

Content

90%Weight 40%Scale 1-5

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

A well-structured, actionable, and token-efficient skill body with concrete code and clear phase sequencing. The main gap is the absence of explicit response-validation feedback loops around the state-changing grant/revoke operations.

Suggestions

Add an explicit validation step after grant/revoke promotional calls (e.g., re-fetch the subscriber and confirm the entitlement is active, or check the HTTP response status before proceeding).

Include a brief validate→fix→retry note for webhook event handling beyond the auth check, since event processing is effectively a batch operation.

Consider moving the API key rules table and duration reference into a short linked reference file if the skill grows, to keep the overview lean.

DimensionReasoningScore

Conciseness

Lean and efficient: uses tables and code blocks, assumes Claude's competence, and never explains basic concepts (what a REST API, webhook, or entitlement is); every section earns its place.

5 / 5

Actionability

Fully executable guidance — copy-paste HTTP and Kotlin Ktor examples, a use-case-to-mechanism mapping table, and concrete duration values for promotional grants cover the common cases.

5 / 5

Workflow Clarity

Clear Discovery → Plan → Execute sequencing with a pre-flight confirmation checklist and webhook auth validation, but grant/revoke calls lack explicit response-validation checkpoints, leaving a minor validation gap.

4 / 5

Progressive Disclosure

Well-organized into clearly headed phases with a single one-level-deep external reference in a References section; no bundle files exist to split, and structure is good, though there is no in-bundle progressive disclosure to reward further.

4 / 5

Total

18

/

20

Passed

Description

92%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A strong, specific description that names concrete capabilities and gives an explicit trigger clause for when to use it. Trigger-term coverage is good but could add a couple of natural synonyms.

DimensionReasoningScore

Specificity

Lists multiple concrete actions — 'v1 subscribers endpoint, grant/revoke entitlements, attributes', 'secret vs public SDK API key usage', and the receipt-verification-avoidance scope — giving comprehensive coverage of the domain rather than vague abstractions.

5 / 5

Completeness

Explicitly answers both: 'what' (covers the REST API, grant/revoke, attributes, key usage) and 'when' ('Use this skill when your backend needs to read or update RevenueCat state on Android') with a concrete trigger clause.

5 / 5

Trigger Term Quality

Natural developer-facing terms like 'RevenueCat', 'Android', 'backend', 'REST API', and 'entitlements' are present and would be said by a user needing this skill, though a few synonymous phrasings are missing.

4 / 5

Distinctiveness Conflict Risk

The RevenueCat + Android + backend niche is tightly scoped with distinct triggers, making conflict with other skills minimal.

5 / 5

Total

19

/

20

Passed

Validation

87%

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

Validation — 14 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

metadata_version

'metadata.version' is missing

Warning

metadata_field

'metadata' should map string keys to string values

Warning

Total

14

/

16

Passed

Repository
RevenueCat/ai-toolkit
Reviewed

Table of Contents

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