fabrik-specify

fabrik-specify is a skill for Claude Code from handarbeit/fabrik. It costs 41 tokens per session (1,393 once invoked), scanned A, original, Apache-2.0.

A requirements-writing guide for turning a rough feature request into a clear specification before technical research begins.

In plain words
What is it for?
Refining backlog issues, writing open clarification questions, checking existing project documentation, and defining what a feature should do and why.
Why use it?
It exposes missing details, ambiguity, contradictions, scope limits, and unclear success conditions before development starts.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions CLAUDE.md.

Part of the fabrik plugin — 12 skills shipped together

Good fit Refining backlog issues, writing open clarification questions, checking existing project documentation, and defining what a feature should do and why.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/handarbeit/fabrik/fabrik-specify
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add handarbeit/fabrik --skill fabrik-specify
Clone the repo
git clone --depth 1 https://github.com/handarbeit/fabrik

Made for: Claude Code.

Or install fabrik, the plugin that ships this one along with the rest of its 12 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for fabrik-specify

README.md
[![agentmods](https://agentmods.dev/badge/skills/handarbeit/fabrik/fabrik-specify/github.svg)](https://agentmods.dev/skills/handarbeit/fabrik/fabrik-specify)
Your own site
<a href="https://agentmods.dev/skills/handarbeit/fabrik/fabrik-specify"><img src="https://agentmods.dev/badge/skills/handarbeit/fabrik/fabrik-specify/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fabrik-specify

Your own site · 80×15
<a href="https://agentmods.dev/skills/handarbeit/fabrik/fabrik-specify"><img src="https://agentmods.dev/badge/skills/handarbeit/fabrik/fabrik-specify.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,393 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00041 $0.01393
Opus 5 $0.00020 $0.00696
Sonnet 5 $0.00008 $0.00279
Haiku 4.5 $0.00004 $0.00139

Measured 10d ago against content hash 6761ccdb7b73, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

fabrik-specify scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugin/fabrik-workflows/skills/fabrik-specify/SKILL.md · 125 lines

How it starts

The opening of the file, as written. The whole thing — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Fabrik Specify Stage

You are the Specify agent in the Fabrik SDLC pipeline. Your job is to refine a rough issue description into a clear, well-specified feature description. You focus on what and why, not how.

Goal

Produce an issue body that is clear enough that a researcher unfamiliar with the original conversation could understand exactly what needs to be built, why, and what the boundaries are.

What You Do

Clarify requirements

Read the issue body carefully. Surface anything that is:

  • Ambiguous: Could be interpreted multiple ways
  • Missing: Unstated assumptions, undefined behavior, missing edge cases
  • Contradictory: Conflicts with itself or with existing features
  • Incomplete: Scope boundaries not defined, success criteria missing

Present open questions as a checklist in the issue body. Be specific — "What should happen when X?" not "Please clarify."

Check consistency with existing features

Read the project's documentation (CLAUDE.md, README, user guide, existing configs) to understand what already exists. Flag:

  • Overlap with existing features that should be merged or differentiated
  • Naming inconsistencies with established conventions
  • Dependencies on features that don't exist yet
  • Contradictions with documented architecture or design decisions

Research prior art

Search the web for established patterns, existing tools, and conventions relevant to the feature. Present findings as context:

  • "Tool X solves this with approach Y — is that the direction you want?"
  • "The conventional pattern for this is Z — are you intentionally diverging?"

Do not prescribe. The user may be innovating. Present options and let them decide.

Define scope boundaries

Explicitly state:

  • What is in scope for this issue
  • What is explicitly out of scope
  • What related work might be needed as follow-up issues
  • What assumptions you're making

Rewrite the issue body

Update the issue body (via FABRIK_ISSUE_UPDATE markers) with a structured spec. Preserve the user's original motivation and problem statement — the "why" is as important as the "what." Never reduce a detailed problem description to a terse summary that loses context. Use this structure:

Read the full file on GitHub · 125 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 125 lines · 41 tokens per session scan A 6761ccdb7b73

Subscribe to this mod's changes

fabrik-specify is a skill published in the GitHub repository handarbeit/fabrik (22 stars, last pushed yesterday), licensed Apache-2.0. It adds 41 tokens to every session and 1,393 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.