CtrlK
BlogDocsLog inGet started
Tessl Logo

aws-serverless

Specialized skill for building production-ready serverless applications on AWS. Covers Lambda functions, API Gateway, DynamoDB, SQS/SNS event-driven patterns, SAM/CDK deployment, and cold start optimization.

59

Quality

70%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

View guide

SecuritybySnyk

Low

Low-risk findings worth noting

Fix and improve this skill with Tessl

tessl review fix ./skills/aws-serverless/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

65%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, code-rich serverless reference with strong examples, but it is monolithic and verbose with repeated guidance and no progressive disclosure via separate reference files. Core build/deploy workflows also lack explicit validation gates.

Suggestions

Split large sections (Sharp Edges, Validation Checks, CDK pattern, API comparison) into reference files under references/ and link to them from SKILL.md to enable progressive disclosure.

Add an explicit validation checkpoint to the build/deploy workflow (e.g. verify `sam build` succeeds and run local tests before `sam deploy`).

De-duplicate repeated SnapStart and modular-AWS-SDK-v3 guidance, and remove the verbatim description repeat at the top of the body, to reduce token cost.

DimensionReasoningScore

Conciseness

The body is code-dense and mostly avoids explaining concepts Claude already knows, but at ~1340 lines it repeats guidance across sections (SnapStart and modular SDK-v3 imports each appear ~3 times) and duplicates the description verbatim at the top, so it could be tightened.

3 / 5

Actionability

It provides copy-paste-ready, executable code and commands in multiple languages (Node.js, Python, YAML, TypeScript, bash) covering the common serverless cases end to end.

5 / 5

Workflow Clarity

Sequences exist for SAM/CDK build-deploy and reactive Sharp-Edges fix flows, but the core build/deploy workflow lacks explicit validate-then-proceed checkpoints for a batch/infra operation, capping workflow clarity at 3.

3 / 5

Progressive Disclosure

It is well-structured with clear headers, but as a single 1340-line file it inlines large blocks (Sharp Edges, Validation Checks, full CDK/SAM patterns) that clearly belong in separate reference files, with no external references at all.

3 / 5

Total

14

/

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 AWS serverless description with strong trigger terms and clear distinctiveness. Its main weakness is the missing explicit 'Use when...' guidance, which caps completeness.

Suggestions

Add an explicit 'Use when...' clause to the description, e.g. 'Use when building or debugging AWS serverless workloads — Lambda, API Gateway, DynamoDB, or SQS/SNS event-driven patterns.'

Include a couple of natural synonyms/phrasings (e.g. 'serverless functions', 'event-driven') to broaden trigger coverage.

DimensionReasoningScore

Specificity

The description lists multiple concrete components and actions across the serverless stack (Lambda, API Gateway, DynamoDB, SQS/SNS, SAM/CDK deployment, cold start optimization), giving comprehensive coverage.

5 / 5

Completeness

It clearly states what the skill does, but the description field has no 'Use when...' clause or equivalent trigger guidance, which caps completeness at 3 per the rubric.

3 / 5

Trigger Term Quality

Strong natural keywords a user would say (serverless, AWS, Lambda, API Gateway, DynamoDB, SAM/CDK), but it lacks synonyms and there are no file extensions, so a few natural terms are missing.

4 / 5

Distinctiveness Conflict Risk

It carves out a clear AWS-serverless niche with distinct service-specific triggers and minimal conflict risk, with other clouds explicitly delegated elsewhere.

5 / 5

Total

17

/

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.

Validation14 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

skill_md_line_count

SKILL.md is long (1344 lines); consider splitting into references/ and linking

Warning

frontmatter_unknown_keys

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

Warning

Total

14

/

16

Passed

Repository
sickn33/antigravity-awesome-skills
Reviewed

Table of Contents

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.