implement-feature

A workflow for implementing a feature from an issue tracker, from specification and design through coding, review, testing, and publishing. An issue tracker is a system for recording and managing development tasks.

In plain words
What is it for?
Use it to implement, test, review, and publish issue-tracker features, with optional decomposition, smoke checks, and acceptance checks.
Why use it?
It organizes the feature work into defined stages and uses specialist agents for the implementation steps. It also supports different execution and decomposition modes.

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/asysta-act/agent-flow/implement-feature
Any agent
npx skills add asysta-act/agent-flow --skill implement-feature
Clone the repo
git clone --depth 1 https://github.com/asysta-act/agent-flow

Made for: Claude Code, Codex.

Per session 23 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,720 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 $0.00023 $0.02720
Opus 5 $0.00012 $0.01360
Sonnet 5 $0.00005 $0.00544
Haiku 4.5 $0.00002 $0.00272

Measured 2d ago against content hash 1164750e45d6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

implement-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 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.

skills/implement-feature/SKILL.md · 147 lines

How it starts

The opening of the file, as written. The whole thing — 147 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/implement-feature

Read and apply the mandatory execution guard defined in skills/implement-feature/data/guard-block.md BEFORE any other instruction in this file.

<stage_allowlist> required: code_analysis, fixer_reviewer, test, publisher optional: smoke_check, acceptance_gate </stage_allowlist>

You are a THIN CONTROLLER. Implement feature $ARGUMENTS from the issue tracker by dispatching specialist subagents via the Task tool. NEVER inline agent logic. Read ## Automation Config from CLAUDE.md.

Mode flag parsing

GOT_YOLO=false ; GOT_STEP_MODE=false
[[ "$ARGUMENTS" == *"--yolo"* ]]      && GOT_YOLO=true
[[ "$ARGUMENTS" == *"--step-mode"* ]] && GOT_STEP_MODE=true
$GOT_YOLO && $GOT_STEP_MODE && { echo "[ERROR] Flags --yolo and --step-mode are mutually exclusive" >&2; exit 1; }

Additional flags parsed from $ARGUMENTS:

  • --decomposedecompose_mode = FORCE ; --no-decomposeDISABLED ; neither → AUTO
  • --decompose-onlydecompose_only_mode = true (implies FORCE; mutually exclusive with --no-decompose)
  • --description "<text>"description_mode = true; mutually exclusive with Issue ID
  • --dry-run → execute steps 01-02 only, display report, no side effects
  • --clarification "<text>"CLARIFICATION_TEXT = "<text>"; passed to ../../core/resume-detection.md

Mode semantics: default = supervised autopilot (pauses only on NEEDS_CLARIFICATION); --yolo = zero gates to PR; --step-mode = pause after each step (c continue / s skip / a abort).

Configuration

Follow ../../core/config-reader.md. Required sections: Issue Tracker (Type, State transitions, On start set), Feature Workflow (Feature query, On start set), Source Control (Remote, Base branch, Branch naming), PR Rules (Labels), PR Description Template, Build & Test (Build, Test, Verify commands), Retry Limits, Module Docs, Hooks, Custom Agents, Notifications, Decomposition, Error Handling, Agent Overrides, Local Deployment, Pipeline Profiles. Full key list in docs/reference/automation-config.md.

Read the full file on GitHub · 147 lines

Files

What ships with it

9 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 · 147 lines · 23 tokens per session scan A 1164750e45d6

Subscribe to this mod's changes

implement-feature is a skill published in the GitHub repository asysta-act/agent-flow (12 stars, last pushed 1mo ago), licensed MIT. It adds 23 tokens to every session and 2,720 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 2026-08-30.

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