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agentmail

Email infrastructure for AI agents. Create accounts, send/receive emails, manage webhooks, and check karma balance via the AgentMail API.

65

Quality

78%

Does it follow best practices?

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Adds up to 20 points to the overall score

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SecuritybySnyk

High

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tessl review fix ./skills/agentmail/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

82%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 highly actionable, well-structured skill body with concrete executable examples and clear multi-step patterns. Minor gains are available by trimming context/boilerplate and splitting bulky reference material into bundle files.

Suggestions

Tighten the opening paragraph and remove the generic 'Limitations' boilerplate to improve token efficiency.

Add explicit error-recovery steps for the polling loops (e.g., what to do after 30 failed attempts).

Move the full API reference table and type definitions into a references/ file to better practice progressive disclosure.

DimensionReasoningScore

Conciseness

The body is mostly lean — curl commands, an API table, and SDK code with little padding — but the opening context paragraph and the generic 'Limitations' boilerplate could be trimmed, sitting just below the fully-lean anchor.

4 / 5

Actionability

It provides copy-paste-ready curl and TypeScript SDK examples, a full API reference table, concrete type definitions, and worked common-case patterns (signup + poll verification, send + await reply), fully covering the common cases.

5 / 5

Workflow Clarity

Multi-step patterns are clearly sequenced with polling loops and break conditions, and the karma section adds an explicit 'Always check balance before operations that cost karma' checkpoint, but explicit error-recovery guidance on failures is light.

4 / 5

Progressive Disclosure

Content is well-organized into clearly-headed sections (When to Use, Quick start, Full API reference, Karma, SDK, Common patterns, Types) with easy navigation, though some reference material (full API table, type defs) is inlined rather than split into bundle files.

4 / 5

Total

17

/

20

Passed

Description

75%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 specific, well-scoped description that clearly communicates what the skill does and is distinct from other skills. Its main weakness is the absence of any explicit 'Use when...' trigger guidance, which caps its completeness score.

Suggestions

Add a 'Use when...' clause naming concrete user triggers, e.g. 'Use when an agent needs a real inbox for signups, verification codes, or transactional email via the AgentMail API.'

Include common synonyms such as 'inbox', 'verification email', and 'API key' to broaden natural trigger coverage.

Mention the @theagentmail.net domain in the description to further sharpen distinctiveness.

DimensionReasoningScore

Specificity

The description enumerates multiple concrete actions — 'Create accounts, send/receive emails, manage webhooks, and check karma balance' — giving comprehensive coverage of the API's capabilities, matching the score-5 anchor.

5 / 5

Completeness

The 'what' is clearly and comprehensively stated, but there is no 'Use when...' clause or equivalent explicit trigger guidance, which per the guidelines caps completeness at 3.

3 / 5

Trigger Term Quality

It surfaces natural terms a user would say ('email', 'send/receive emails', 'accounts', 'webhooks', 'karma') but lacks synonyms like 'inbox' or 'verification' and any 'Use when...' phrasing, so it sits above the midpoint but short of comprehensive.

4 / 5

Distinctiveness Conflict Risk

It carves a clear niche tied to the AgentMail API with distinct triggers (karma, webhooks, @theagentmail.net), making conflict with other skills minimal.

5 / 5

Total

17

/

20

Passed

Validation

93%

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

Validation15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

15

/

16

Passed

Repository
sickn33/antigravity-awesome-skills
Reviewed

Table of Contents

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