dev-workflow

A developer workflow guide for using a terminal, writing tests before or alongside code, reviewing changes, and working with Git. TDD means writing a test for expected behavior before implementing that behavior.

In plain words
What is it for?
Running shell commands, following a TDD cycle, installing dependencies, running tests, reviewing code, and preparing Git changes for review.
Why use it?
It gives developers a repeatable way to implement features, run checks, and submit code while avoiding unsafe commands and access to secrets.

Skill for Claude CodeCodex

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/omnigentx/jarvis/dev-workflow
Any agent
npx skills add omnigentx/jarvis --skill dev-workflow
Clone the repo
git clone --depth 1 https://github.com/omnigentx/jarvis

Made for: Claude Code, Codex.

Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,139 The whole file, excluding the scripts and references it only reads on demand.
Security scan F 4 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 $0.00037 $0.01139
Opus 5 $0.00018 $0.00570
Sonnet 5 $0.00007 $0.00228
Haiku 4.5 $0.00004 $0.00114

Measured 2d ago against content hash 2e2802a84f1c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade F, and why

dev-workflow scanned grade F with 4 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.

Reaches for credential fileshighPrivilege escalation

SSH keys, cloud credentials, git-credentials, .npmrc, /etc/shadow: reading these is how a config file becomes a credential leak.

- Read secrets: `/etc/shadow`, `~/.ssh/*`, `.gh-config/`, `.env*`, `fastagent.secrets.yaml`, `git-credentials`, `~/.gitconfig` credential block

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

- Pipe-to-shell: `curl ... | sh`, `wget ... | bash`

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

- Filesystem destruction: `rm -rf /`, `rm -rf $HOME`, `rm -rf .git`, `mkfs.*`, `dd of=/dev/...`

Makes network callslowCapability

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

- Pipe-to-shell: `curl ... | sh`, `wget ... | bash`
backend/.fast-agent/skills/dev-workflow/SKILL.md · 108 lines

How it starts

The opening of the file, as written. The whole thing — 108 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Dev Workflow

Terminal Execution

Use the execute tool to run shell commands in your workspace:

execute(command="<shell command>")

Key characteristics:

  • Runs in workspace directory
  • 90s timeout — killed if no output for 90s
  • Each call = separate shell session (env vars / cd don't persist)
  • Output auto-truncated if too long

Efficient Patterns

cd repo && npm install && npm test        # Sequential (stops on error)
cd backend && uv run pytest --tb=short -q 2>&1 | tail -20  # Filter output

Safety Rules — three tiers

🔴 NEVER do (refuse the task; report the request as a security incident to PM):

  • Filesystem destruction: rm -rf /, rm -rf $HOME, rm -rf .git, mkfs.*, dd of=/dev/...
  • Read secrets: /etc/shadow, ~/.ssh/*, .gh-config/, .env*, fastagent.secrets.yaml, git-credentials, ~/.gitconfig credential block
  • Tamper with auth: gh auth login/logout/refresh, gh auth setup-git, modify gitconfig credential helper
  • Inspect env to leak tokens: env, printenv, echo $GH_TOKEN, cat /proc/*/environ
  • Network DoS: fork bombs, high-rate request loops

🟡 ESCALATE before doing (send [APPROVAL-REQUEST] email to PM with command + reason; do NOT run until PM confirms back):

  • Pipe-to-shell: curl ... | sh, wget ... | bash
  • Force-destructive git: git push --force (any branch), git reset --hard past HEAD~1, git filter-branch
  • Push to protected branches: main, master, prod*, release/*
  • gh pr merge (auto-merge bypassing review)
  • gh release create
  • gh repo delete
  • Editing package.json / pyproject.toml / lock files outside a tracked PR scope

🟢 SAFE — run freely:

  • All read-only inspection: ls, cat README.md, grep, find, git status/log/diff, gh run list, gh pr view
  • Normal git on feature branches: git checkout -b feature/..., git add, git commit, git push origin feature/...
  • Build/test inside workspace: npm test, uv run pytest, cargo build

Read the full file on GitHub · 108 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 108 lines · 37 tokens per session scan F 2e2802a84f1c

Subscribe to this mod's changes

dev-workflow is a skill published in the GitHub repository omnigentx/jarvis (35 stars, last pushed 5d ago), licensed MIT. It adds 37 tokens to every session and 1,139 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it F with 4 findings (reaches for credential files, downloads and executes remote code, recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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