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matthew-a-carr/implement-spec

Implement an approved feature specification. Triggered by a routine when a spec PR is merged with the `ai:implement` label (per ADR 057), or by a human asking "implement SPEC-NNN" interactively. Follows the spec's implementation order using TDD, logs deviations, runs the full verification suite, opens an implementation PR with label `ai:done`, and closes out the spec with post-implementation notes and tech debt capture.

78

2.56x
Quality

90%

Does it follow best practices?

Impact

100%

2.56x

Average score across 1 eval scenario

SecuritybySnyk

Advisory

Suggest reviewing before use

Overview
Quality
Evals
Security
Files

Quality

Content

77%

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

This is a strong, highly actionable skill for a complex multi-step implementation workflow. Its greatest strengths are the precise tool/command references, clear sequencing with validation gates, and the thoughtful deviation-tracking workflow with deferred triage. Its main weaknesses are moderate verbosity (some patterns repeated multiple times) and the monolithic structure that could benefit from splitting supporting content into referenced files.

Suggestions

Extract the repeated blocker/escalation pattern (ai:blocked label + PR comment + Slack DM) into a single referenced section or sub-skill to reduce repetition across Pre-flight, Verify, and Block/escalate sections.

Remove or significantly trim the 'Untrusted content' section — Claude already understands prompt injection guardrails, and this adds ~8 lines of content that doesn't teach implementation-specific behavior.

DimensionReasoningScore

Conciseness

The skill is lengthy but most content is genuinely necessary for this complex multi-step workflow. However, there's some redundancy — the tool conventions section defers to another skill's file, the untrusted content section explains concepts Claude already knows, and the block/escalate section repeats patterns already stated inline (e.g., Slack DM + ai:blocked label pattern appears 3+ times).

2 / 3

Actionability

The skill provides highly specific, executable guidance throughout: exact bash commands for verification, exact MCP tool names with parameters, exact file paths, exact label names, exact branch naming conventions, and precise commit message formats. Every step is concrete and copy-paste ready.

3 / 3

Workflow Clarity

The workflow is clearly sequenced with explicit validation checkpoints (review-spec gate, full verification suite with retry logic capped at 3, self-review before PR), feedback loops (fix and re-validate), and clear escalation paths at every failure point. The close-out triage step with its landing-place table is an excellent structured checkpoint.

3 / 3

Progressive Disclosure

The content is well-organized with clear section headers (Pre-flight, Implement, Verify, Close out, Self-review, Open PR, Block/escalate), but it's a monolithic ~200-line file with no references to supporting bundle files. The triage table and template references (e.g., `docs/implementation-notes/_template.md`) suggest content that could be split out, and no bundle files are provided to support the references made.

2 / 3

Total

10

/

12

Passed

Description

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 an excellent skill description that clearly defines what the skill does (implement approved feature specs via TDD with full verification and PR workflow), when it should be triggered (merged spec PR with label or interactive command), and uses distinctive terminology that minimizes conflict risk. The description is concise yet comprehensive, covering the full lifecycle from trigger to completion.

DimensionReasoningScore

Specificity

Lists multiple specific concrete actions: follows implementation order using TDD, logs deviations, runs verification suite, opens implementation PR with label, closes out spec with post-implementation notes and tech debt capture.

3 / 3

Completeness

Clearly answers both 'what' (implement an approved feature specification using TDD, log deviations, run verification, open PR, capture tech debt) and 'when' (triggered by spec PR merge with 'ai:implement' label or by human asking 'implement SPEC-NNN').

3 / 3

Trigger Term Quality

Includes natural trigger terms users would say: 'implement SPEC-NNN', 'ai:implement' label, 'spec PR is merged', and references to feature specification implementation. These are terms a user or automated system would naturally use.

3 / 3

Distinctiveness Conflict Risk

Highly distinctive with specific triggers like 'ai:implement' label, 'SPEC-NNN' pattern, ADR 057 reference, and a clear niche of implementing approved feature specs. Unlikely to conflict with general coding or PR skills.

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.

Reviewed

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