fabrik-implement

fabrik-implement is a skill for Claude Code from handarbeit/fabrik. It costs 38 tokens per session (4,230 once invoked), scanned A, original, Apache-2.0.

An implementation-stage coding assistant for Fabrik, a system that organizes software work through research, planning, coding, and review. It follows an agreed task checklist while changing the code.

In plain words
What is it for?
Use it to read the issue and plan, write the implementation and tests, commit the changes, and push the branch for review.
Why use it?
It turns an approved plan into tested, committed code on a separate Git branch, reducing the manual work of carrying out the plan.

Skill for Claude Code

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

Part of the fabrik plugin — 12 skills shipped together

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.

agentmods
npx agentmods add skills/handarbeit/fabrik/fabrik-implement
Any agent
npx skills add handarbeit/fabrik --skill fabrik-implement
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-implement

README.md
[![agentmods](https://agentmods.dev/badge/skills/handarbeit/fabrik/fabrik-implement.svg)](https://agentmods.dev/skills/handarbeit/fabrik/fabrik-implement)
Your own site
<a href="https://agentmods.dev/skills/handarbeit/fabrik/fabrik-implement"><img src="https://agentmods.dev/badge/skills/handarbeit/fabrik/fabrik-implement.svg" alt="Measured on agentmods" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,230 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
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 $0.00038 $0.04230
Opus 5 $0.00019 $0.02115
Sonnet 5 $0.00008 $0.00846
Haiku 4.5 $0.00004 $0.00423

Measured 6d ago against content hash e3dc864a2468, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

fabrik-implement scanned grade A with 1 finding 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 6d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

# health-check / curl / run the verification here
plugin/fabrik-workflows/skills/fabrik-implement/SKILL.md · 251 lines

How it starts

The opening of the file, as written. The whole thing — 251 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Fabrik Implement Stage

You are the Implement agent in the Fabrik SDLC pipeline. Your job is to execute the plan by writing code, tests, and committing your work. You follow the task checklist and produce a working implementation on the feature branch.

Goal

Produce a clean, tested, committed implementation that follows the plan and is ready for review. Every change should be pushed to the remote branch.

Before You Start

Read context files

The engine has written context files to .fabrik-context/ in your working directory:

  • .fabrik-context/issue.md — the issue body (the spec); understand what you're building
  • .fabrik-context/stage-Plan.md — the implementation plan and task checklist; this is your primary guide
  • .fabrik-context/stage-Research.md — the research findings, if present

Read these files before looking at the code. The task checklist in .fabrik-context/stage-Plan.md is the authoritative source of truth — not the issue body.

Check for existing work

Always start with git status. There may be:

  • Uncommitted changes from a previous interrupted session — review them, decide if they're useful, commit or discard
  • Prior commits on the branch — check git log to see what's already been done
  • Checked-off tasks in the Plan stage comment — don't redo completed work

If resuming, pick up where the previous session left off. Read the commit history and the task checklist in .fabrik-context/stage-Plan.md to understand what's done.

Understand the plan

Read .fabrik-context/stage-Plan.md thoroughly. The plan contains:

  • The implementation approach and key decisions (follow them, don't redesign)
  • The task checklist (work through it in order)
  • File changes (the plan tells you what to modify)

If the plan is unclear or seems wrong based on what you find in the code, note the discrepancy but follow the plan. Deviating from the plan without the user's input causes confusion downstream.

How You Work

Follow the task checklist

Read the full file on GitHub · 251 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. 6d ago First seen · 251 lines · 38 tokens per session scan A e3dc864a2468

Subscribe to this mod's changes

fabrik-implement is a skill published in the GitHub repository handarbeit/fabrik (22 stars, last pushed today), licensed Apache-2.0. It adds 38 tokens to every session and 4,230 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.