feature

feature is a skill for Claude Code, Codex from cunhaax/ai-workflow. It costs 37 tokens per session (3,187 once invoked), scanned A, original, MIT.

A complete workflow for new software features: planning, critique, implementation, testing, code review, quality checks, and pull-request preparation.

In plain words
What is it for?
Use it when starting a non-trivial feature or change that needs a reviewed plan, implementation, tests, and final QA.
Why use it?
It structures development into explicit stages and approval gates so important checks are not skipped.

Skill for Claude CodeCodex

Part of the ai-workflow plugin — 8 skills, 4 agents, 2 MCP servers 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/cunhaax/ai-workflow/feature
Any agent
npx skills add cunhaax/ai-workflow --skill feature
Clone the repo
git clone --depth 1 https://github.com/cunhaax/ai-workflow

Made for: Claude Code, Codex.

Or install ai-workflow, the plugin that ships this one along with the rest of its 8 skills, 4 agents, 2 MCP servers.

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 feature

README.md
[![agentmods](https://agentmods.dev/badge/skills/cunhaax/ai-workflow/feature.svg)](https://agentmods.dev/skills/cunhaax/ai-workflow/feature)
Your own site
<a href="https://agentmods.dev/skills/cunhaax/ai-workflow/feature"><img src="https://agentmods.dev/badge/skills/cunhaax/ai-workflow/feature.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,187 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 $0.00037 $0.03187
Opus 5 $0.00018 $0.01594
Sonnet 5 $0.00007 $0.00637
Haiku 4.5 $0.00004 $0.00319

Measured 4d ago against content hash ce4b34d26ccf, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

feature 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 4d 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/ai-workflow/skills/feature/SKILL.md · 278 lines

How it starts

The opening of the file, as written. The whole thing — 278 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/feature — AI-Assisted Development Lifecycle

Activate this skill for non-trivial features or changes to run the full structured development workflow: plan → critique → implement → test → code-review → QA → PR.


Workflow

Step 1 — Draft, critique, and approve the plan

Preconditions — check the branch first. The workflow assumes the human started this session on a fresh feature branch: the code review (Step 4) diffs against the default branch (named in AGENTS.mdCommands) and Step 9 opens a PR targeting it, neither of which works from the default branch itself. If the session is on the default branch, STOP and ask the user to create a feature branch — you may not create or switch branches yourself (Rule 3 in AGENTS.md).

Enter plan mode now, before drafting. Plan mode is a structural commitment: while in plan mode the harness blocks edit tools, so the workflow cannot skip the approval gate even if the agent is tempted to inline the plan and proceed. Stay in plan mode through steps 1a, 1b, and 1c. Exit plan mode only in step 1c, after the user approves.

Step 1a — Draft the plan

Invoke the planner sub-agent to draft an implementation plan. Pass the user's prompt verbatim — including any reference to docs or links. The planner will fetch all external specs with its own tools (it has WebFetch for URLs) and return the plan as markdown text.

Do not use tools directly — always delegate to the planner sub-agent, regardless of which platform you are running on.

Step 1b — Critique the plan

Invoke the plan-critic sub-agent with the draft plan as input. The critic will apply pre-mortem, inversion, load-bearing assumption analysis, and consistency checks against ADRs and product docs, and return the critique as markdown text.

Skip this step ONLY if the change qualifies as trivial under ALL of:

  • diff is plausibly under ~50 lines of non-test code,
  • touches none of the project's sensitive areas (the Sensitive Areas section in AGENTS.md is the canonical list),
  • introduces no new public endpoints, no new persisted fields, no new external dependencies,
  • AND the user explicitly said "skip the critic" (or equivalent) in this session.

Read the full file on GitHub · 278 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. 4d ago First seen · 278 lines · 37 tokens per session scan A ce4b34d26ccf

Subscribe to this mod's changes

feature is a skill published in the GitHub repository cunhaax/ai-workflow (5 stars, last pushed 8d ago), licensed MIT. It adds 37 tokens to every session and 3,187 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 2026-08-31.