develop

A command for implementing GitHub issues that change coding-agent skills. It guides the work through setup, planning, validation, implementation, review, finalization, and cleanup.

In plain words
What is it for?
Use it with an issue number to create a branch, implement the requested skill change, verify it, commit it, push it, and create a pull request.
Why use it?
It organizes a skill change into reviewable stages and includes checks before the work is finalized.

Command

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 commands/rube-de/cc-skills/develop
Clone the repo
git clone --depth 1 https://github.com/rube-de/cc-skills
Per session 11 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 567 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00011 $0.00567
Opus 5 $0.00005 $0.00283
Sonnet 5 $0.00002 $0.00113
Haiku 4.5 $0.00001 $0.00057

Measured 2d ago against content hash 827cd3cbe2f8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

develop 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 2d 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.

plugins/plugin-dev/commands/develop.md · 57 lines

How it starts

The opening of the file, as written. The whole thing — 57 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/plugin-dev:develop — Skill Developer Workflow

Implement a GitHub issue for skill development using the skill-developer workflow.

Usage

/plugin-dev:develop #160
/plugin-dev:develop owner/repo#160

Behavior

This command activates the develop skill which runs the full skill-developer workflow:

setup → context → plan → validate → [baseline] → implement → [verify] → review → finalize

Core Phases

  • Phase 0: Setup — create feature branch
  • Phase 1: Context — read issue, detect skill files
  • Phase 2: Plan — draft implementation plan
  • Phase 3-4: Validate — Gemini review loop
  • Phase 5-7: Implement — write code, verify criteria
  • Phase 8-9: Review — council review
  • Phase 10: Finalize — commit, push, create PR
  • Phase 11: Cleanup — clean temps

TDD Extension Points (planned — see #163)

  • Phase 4.5 (RED): Baseline capture — run test prompts without skill changes (currently skipped)
  • Phase 5-7 (GREEN): Implementation constrained by baseline failures (active when baseline exists)
  • Phase 7.5 (REFACTOR): Verify + benchmark — compare against baseline, iterate on loopholes (currently skipped)

First Action

  1. Read plugins/plugin-dev/skills/develop/SKILL.md to load the skill activation context
  2. Read plugins/plugin-dev/skills/develop/references/WORKFLOW.md and follow it phase-by-phase, passing $ARGUMENTS as the raw issue reference (WORKFLOW.md Phase 0 handles all parsing to extract REPO and ISSUE_NUM)

Arguments

  • $ARGUMENTS — GitHub issue reference in any format: #123, owner/repo#123, or issue URL

Skill File Detection

The workflow automatically detects skill-related files for domain-specific handling:

  • SKILL.md — Skill activation definitions
  • references/*.md — Workflow reference files (e.g., references/WORKFLOW.md)
  • agents/*.md — Agent/subagent definitions
  • hooks/hooks.json — Hook config (declares hook types, matchers, and script references)
  • scripts/ — Hook scripts (executables referenced by hooks.json)

Read the full file on GitHub · 57 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. 2d ago First seen · 57 lines · 11 tokens per session scan A 827cd3cbe2f8

Subscribe to this mod's changes

develop is a command published in the GitHub repository rube-de/cc-skills (10 stars, last pushed 5d ago), licensed MIT. It adds 11 tokens to every session and 567 once invoked, about $0.0001 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 2026-08-31.