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resend-email

Resend transactional email patterns, React Email templates, domain configuration, and webhook handling. Use when sending emails, building email templates, or configuring email delivery.

100

Quality

100%

Does it follow best practices?

Impact

Pending

No eval scenarios have been run

SecuritybySnyk

Advisory

Suggest reviewing before use

SKILL.md
Quality
Evals
Security

Quality

Discovery

100%

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 strong skill description that clearly identifies the specific technology stack (Resend, React Email), lists concrete capabilities, and provides explicit trigger guidance via a 'Use when...' clause. The description is concise, uses third person voice, and covers natural user language well.

DimensionReasoningScore

Specificity

Lists multiple specific concrete actions: 'transactional email patterns', 'React Email templates', 'domain configuration', and 'webhook handling' — these are all distinct, concrete capabilities.

3 / 3

Completeness

Clearly answers both 'what' (Resend transactional email patterns, React Email templates, domain configuration, webhook handling) and 'when' (explicit 'Use when sending emails, building email templates, or configuring email delivery').

3 / 3

Trigger Term Quality

Includes strong natural keywords users would say: 'sending emails', 'email templates', 'email delivery', 'Resend', 'React Email', 'domain configuration', 'webhook'. These cover the main ways a user would phrase requests related to this skill.

3 / 3

Distinctiveness Conflict Risk

The mention of 'Resend' and 'React Email' as specific technologies, combined with 'transactional email' and 'webhook handling', creates a clear niche that is unlikely to conflict with generic coding or other email-related skills.

3 / 3

Total

12

/

12

Passed

Implementation

100%

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 skill that balances conciseness with actionability. It provides executable code examples, a clear verification workflow with validation checkpoints, and appropriately delegates detailed reference material to a separate file. The content respects Claude's intelligence by avoiding unnecessary explanations while still being comprehensive enough to cover setup, sending, domain configuration, and webhook handling.

DimensionReasoningScore

Conciseness

The content is lean and efficient. It doesn't explain what Resend is or how email works—it jumps straight into setup and usage. Every section earns its place with minimal filler.

3 / 3

Actionability

Provides fully executable TypeScript code for sending emails (both plain text and React templates), concrete bash commands for setup and preview, and specific DNS verification commands. Copy-paste ready.

3 / 3

Workflow Clarity

The Quick Verification Workflow provides a clear numbered sequence with explicit validation checkpoints (dig TXT to confirm DNS, check SPF/DKIM headers, assert 200 on webhook test) and an error recovery step if verification fails.

3 / 3

Progressive Disclosure

The SKILL.md serves as a clear overview with quick-start content inline, while appropriately deferring detailed template patterns, webhook handler examples, and troubleshooting to REFERENCE.md with well-signaled one-level-deep references.

3 / 3

Total

12

/

12

Passed

Validation

100%

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

Validation11 / 11 Passed

Validation for skill structure

No warnings or errors.

Repository
monkilabs/opencastle
Reviewed

Table of Contents

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