Spec Driven Eval

Q: What is a Claude Code skill and how does the Spec Driven Eval skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Spec Driven Eval is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Product · Sub-category: prd-spec · Last updated: 2026-06-30

type:audit

Scores how completely an implementation fulfills a PRD/spec, case by case, and produces a single comparable final grade. Invoke only when explicitly named (e.g. run spec-driven-eval); do not auto-trigger. Use when benchmarking spec-driven implementations, grading acceptance criteria, evaluating whether a feature was 100% implemented, comparing multiple implementations of the same PRD, or auditing implementation and test coverage (unit and e2e) against product requirements. Do NOT use for planning or building features (use tlc-spec-driven), writing PRDs, or general code review unrelated to a spec.

Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

Spec Driven Eval includes pricing or quota commentary; 9 code blocks for direct copy-paste. At roughly 5,348 words the SKILL.md is on the longer end of the catalog distribution.

Source: agent-skills.techleads.club
Original author: tech-leads-club
Indexed lastmod: 2026-06-30
Catalog position: Product · prd-spec
Indexed related skills: 10

How Spec Driven Eval fits the catalog

Spec Driven Eval sits in the Product category under the prd-spec sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Evaluate a spec-driven-development (SDD) effort against a PRD case by case (acceptance criterion by acceptance criterion), scoring implementation and tests separately, and roll up to a single comparable final grade. Designed for benchmarking: the same PRD evaluated across different SDD frameworks — and the same effort evaluated twice — must yield comparable, reproducible numbers.

What this skill does

Spec Driven Eval is a community-contributed Claude Code skill in the prd-spec sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/spec-driven-eval/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when benchmarking spec-driven implementations, grading acceptance criteria, evaluating whether a feature was 100% implemented, comparing multiple implementations of the same PRD, or auditing implementation and test coverage (unit and e2e) against product requirements. Do NOT use for planning or building features (use tlc-spec-driven), writing PRDs, or general code review unrelated to a spec.

Who uses this skill

The Spec Driven Eval Claude Code skill is built for product managers, product designers, and cross-functional teams planning, shipping, and measuring product features. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 146,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/spec-driven-eval
curl -L https://claudskills.com/skills/spec-driven-eval/SKILL.md \
  -o ~/.claude/skills/spec-driven-eval/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/spec-driven-eval/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/spec-driven-eval/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\spec-driven-eval\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Spec Driven Eval Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/spec-driven-eval/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Spec Driven Eval skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Spec Driven Eval skill?

Use Spec Driven Eval when your Claude Code task falls under the Product category — specifically in the prd spec area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Spec Driven Eval" or describe the task and let Claude pick). Browse related skills at /category/product/.

What is a Claude Code skill and how does the Spec Driven Eval skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Spec Driven Eval is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/tech-leads-club/agent-skills/blob/HEAD/packages/skills-catalog/skills/(development)/spec-driven-eval/SKILL.md
Author: tech-leads-club
Website: https://agent-skills.techleads.club/

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

tech-leads-club. (2026). Spec Driven Eval [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/spec-driven-eval/

BibTeX

@misc{spec-driven-eval-2026,
  author    = {tech-leads-club},
  title     = {Spec Driven Eval [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/spec-driven-eval/}
}

Embed this skill

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Badge

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Security scan

Grade A · scanned 2026-07-06 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/spec-driven-eval/#security)

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Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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