impl-task

A task implementation workflow that carries out an existing implementation plan in a code repository.

In plain words
What is it for?
Use it after planning a task to implement the changes, run the project’s checks, and prepare the work for later review.
Why use it?
It gives an agent a defined sequence for making planned changes, formatting them, and checking the result.

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/patforna/auto-task/impl-task
Any agent
npx skills add patforna/auto-task --skill impl-task
Clone the repo
git clone --depth 1 https://github.com/patforna/auto-task

Made for: Claude Code, Codex.

Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,003 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 $0.00036 $0.01003
Opus 5 $0.00018 $0.00502
Sonnet 5 $0.00007 $0.00201
Haiku 4.5 $0.00004 $0.00100

Measured yesterday against content hash 7efe0adaca19, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

impl-task 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 yesterday.

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/impl-task/SKILL.md · 89 lines

How it starts

The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Implement Task

Usage

/at:impl-task <task-path> [further user instructions]

Goal

Implement a task by executing its implementation plan.

Context

This skill is typically run as part of a larger workflow:

create-task → clarify-task → plan-task → impl-task → review-code → review-task → ship-task

As steps (e.g. clarify, plan, impl, review) typically run in new sessions, it's imperative that the task file plus repo state carry everything the next agent needs.

Task files live in the project's task store — tasks/ in the repo by default. Project config can override this and other defaults: read .claude/auto-task.config.md (project, committed) and .claude/auto-task.config.local.md (personal overrides — win on conflict) if they exist. See /at:create-task § Task Store and Project Config.

Guidance (DO NOT IGNORE!)

These rules govern how to execute the implementation. Internalise and follow them throughout.

  • Commit early and often.
  • Stage files explicitly by path (git add <paths>), never -A/. — it guards against sweeping in unrelated changes (e.g. from parallel sessions sharing a checkout).
  • Run the project's formatter over your changes before the final verification run — formatting must never surface as a verification failure or a mop-up commit.
  • Follow the repo's existing commit conventions. Append the task-link suffix to subjects (default (task/NNN); config can change or drop it) so commits trace back to the task.
  • Look for and internalise existing style, patterns, conventions. Don't deviate unless the plan explicitly asks for it.
  • Maintain the testing pyramid. Test at the lowest possible level. Few, mostly happy-path tests at the top of the pyramid (e2e, component).
  • Do not use I/O, randomness, or real date/time in unit tests.
  • Take small steps when uncertain, surprised, or in unfamiliar territory; bigger steps when confident. An unexpected red means shift down to smaller steps. An unexpected green means review your test with fresh eyes — there are probably gaps.

Read the full file on GitHub · 89 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. yesterday First seen · 89 lines · 36 tokens per session scan A 7efe0adaca19

Subscribe to this mod's changes

impl-task is a skill published in the GitHub repository patforna/auto-task (3 stars, last pushed 13d ago), licensed MIT. It adds 36 tokens to every session and 1,003 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.