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Agent skill

Spec Generate

by sukilll in sukilll/great-product-skills

Product Spec Builder that helps PMs generate clear, structured, testable PRDs.

No licenceAuto-check passedProduct & Project Management

Install Spec Generate

skills CLI
$ npx skills add sukilll/great-product-skills --skill spec-generate -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install sukilll/great-product-skills spec-generate --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/sukilll/great-product-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/spec-generate .claude/skills/spec-generate && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
spec-generate
GitHub stars
105
Token cost
~4.5k tokens
SKILL.md length
1,801 words
Files
1
Skills in repo
4
Repo updated
First seen
Licence
None found

At a glance

Product Spec Builder that helps PMs generate clear, structured, testable PRDs.

  • Works in 12 steps: Initialize (Context Intake) → Overview → Competitor Analysis → …
  • Tasks that involve PRD writing
  • SKILL.md covers Role, Overview, When to Use This Skill and Global Rules, plus 6 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Spec Generate is an agent skill from sukilll/great-product-skills. Product Spec Builder that helps PMs generate clear, structured, testable PRDs. Creates both full and lightweight specs for any product or platform with a guided step-by-step workflow. Output in English Markdown format.

Its SKILL.md is about 4.5k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Product & Project Management, covering PRD writing.

When your agent uses it

  • Tasks that involve PRD writing

Example prompts

  • “/spec-generate”

Workflow steps

12 steps, taken from the step headings in SKILL.md.

  1. Initialize (Context Intake)
  2. Overview
  3. Competitor Analysis
  4. User Scenarios & Stories
  5. User Flow & Functions
  6. 5 - User Flow Diagram (Visual Flowchart)
  7. Telemetry (Recommended)
  8. Experiment (Recommended)
  9. Evals (Optional)
  10. Roadmap (Optional)
  11. GTM (Optional)
  12. Finalize Spec Document

What it can do on your machine

Read from SKILL.md and the folder at commit eb506b3. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Spec Generate loads about 4.5k tokens when it runs. Until then it costs about 58 tokens; SKILL.md has 1,801 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~58
When it runs · the whole SKILL.md, loaded when a task matches
~4.5k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 1,801 words (~4,476 tokens).

“You are a Product Spec Builder that helps PMs across Microsoft (or other teams) generate clear, structured, testable PRDs. You guide users through a step-by-step process to create comprehensive product specifications.”

— opening of SKILL.md by sukilll
name
spec-generate
metadata.category
product-management
metadata.author
Societas Team
metadata.version
1.0.0

Read the full SKILL.md on GitHub

Files

Just SKILL.md in skills/spec-generate of sukilll/great-product-skills.

Open the folder on GitHubat commit eb506b3

Compare with similar skills

Spec Generate next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Spec Generate compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Spec Generate this skillsukilll/great-product-skills105—~4.5kAutomated safety check: PassNone
CCPM Project Managementautomazeio/ccpm8.4k—~1.1kAutomated safety check: PassMIT
Ralph Tui Create Beadssubsy/ralph-tui2.5k1 repos~2.6kAutomated safety check: PassMIT
Trellis Brainstormanjiemo/SunnyBeach1787 repos~4kAutomated safety check: PassApache-2.0
Adversarial Speczscole/adversarial-spec5561 repos~8.3kAutomated safety check: NotesMIT
Ralph Tui Create Beads Rustsubsy/ralph-tui2.5k1 repos~2.8kAutomated safety check: PassMIT

Similar skills

  • CCPM Project Management

    automazeio/ccpm

    Runs a spec-driven workflow from PRD to epic to GitHub issues to parallel agents, with status, standup and blocked-work reports from bundled scripts.

    8.4k GitHub stars~1.1k tokensUpdated 6 mo ago
    Product & Project ManagementAuto-check passed

  • Ralph Tui Create Beads

    subsy/ralph-tui

    Convert PRDs to beads for ralph-tui execution. An agent skill from subsy/ralph-tui.

    2.5k GitHub starsUsed in 1 repo~2.6k tokens
    Product & Project ManagementAuto-check passed

  • Trellis Brainstorm

    anjiemo/SunnyBeach

    Guides collaborative requirements discovery before implementation.

    178 GitHub starsUsed in 7 repos~4k tokens
    Product & Project ManagementAuto-check passed

  • Adversarial Spec

    zscole/adversarial-spec

    Iteratively refine a product spec by debating with multiple LLMs (GPT, Gemini, Grok, etc.) until all models agree.

    556 GitHub starsUsed in 1 repo~8.3k tokens
    Product & Project ManagementAuto-check: notes

  • Ralph Tui Create Beads Rust

    subsy/ralph-tui

    Convert PRDs to beads for ralph-tui execution using beads-rust (br CLI).

    2.5k GitHub starsUsed in 1 repo~2.8k tokens
    Product & Project ManagementAuto-check passed

  • Ouroboros PM Interview

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    Runs a guided product-manager interview that classifies each question automatically and produces a Product Requirements Document.

    6.2k GitHub starsUsed in 1 repo~5.7k tokens
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More from sukilll/great-product-skills

  • UX Walkthrough Skill

    sukilll/great-product-skills

    以资深 UX 专家身份走查产品体验问题。阅读 PRD 理解产品目标， 系统性检查用户流程、UI 一致性、错误处理等体验问题并汇总报告。

    105 GitHub stars~848 tokensUpdated 7 mo ago
    Auto-check passed

  • Product Team

    sukilll/great-product-skills

    融合产品讨论、写 Spec、生成 Demo、专家体验走查的全流程产研 Team Agent. An agent skill from sukilll/great-product-skills.

    105 GitHub stars~1.8k tokensUpdated 7 mo ago
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  • Pm Debate

    sukilll/great-product-skills

    扮演顶级 AI 产品经理，与用户进行高质量的产品讨论。擅长批判性思考， 帮助用户丰富和深化想法，用对话式的节奏一来一回地推进思考。

    105 GitHub stars~700 tokensUpdated 7 mo ago
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Categories

Questions about Spec Generate

What does Spec Generate do?

Product Spec Builder that helps PMs generate clear, structured, testable PRDs. Spec Generate is an agent skill from sukilll/great-product-skills. Product Spec Builder that helps PMs generate clear, structured, testable PRDs.

When should I use Spec Generate?

Spec Generate fits situations like: tasks that involve PRD writing.

How do I install Spec Generate in Claude Code?

Run `npx skills add sukilll/great-product-skills --skill spec-generate -a claude-code`. Or copy the skill folder (skills/spec-generate in sukilll/great-product-skills) into .claude/skills/spec-generate in your project. Claude Code loads it when a task matches its description.

How do I install Spec Generate in Codex?

Run `npx skills add sukilll/great-product-skills --skill spec-generate -a codex`. Or copy the skill folder (skills/spec-generate in sukilll/great-product-skills) into .agents/skills/spec-generate in your project. Codex loads it when a task matches its description.

Can I use Spec Generate in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add sukilll/great-product-skills --skill spec-generate -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/spec-generate, .gemini/skills/spec-generate, .github/skills/spec-generate and .opencode/skills/spec-generate in your project.

What does Spec Generate need to run?

SKILL.md names no scripts, command-line tools or credentials: Spec Generate is instructions for the agent only.

Does Spec Generate access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Spec Generate safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Spec Generate use?

No licence was found for Spec Generate or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Spec Generate use?

About 4.5k tokens (SKILL.md is roughly 18k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Spec Generate?

Skills that share tags, products or a category with Spec Generate: CCPM Project Management (automazeio/ccpm, 8.4k stars), Ralph Tui Create Beads (subsy/ralph-tui, 2.5k stars), Trellis Brainstorm (anjiemo/SunnyBeach, 178 stars) and Adversarial Spec (zscole/adversarial-spec, 556 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Spec Generate?

sukilll (a GitHub user) maintains it in sukilll/great-product-skills, which has 105 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on March 9, 2026.

Source: sukilll/great-product-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.