atomic_execution

atomic_execution is a skill for Claude Code, Codex from ApexIQ/skillsmith. It costs 18 tokens per session (455 once invoked), scanned A, original, MIT.

A structured workflow for coding tasks: understand the project, make a specific plan, change code in small steps, and verify the result. Verification can include building, linting, and running tests.

In plain words
What is it for?
Use it to organize implementation work, create task checklists, make incremental code changes, and confirm that changes compile and pass relevant tests.
Why use it?
It reduces mistakes caused by unclear requirements, large unreviewed edits, or claiming work is finished without checking it.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to organize implementation work, create task checklists, make incremental code changes, and confirm that changes compile and pass relevant tests.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/apexiq/skillsmith/atomic_execution
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.

Any agent
npx skills add ApexIQ/skillsmith --skill atomic_execution
Clone the repo
git clone --depth 1 https://github.com/ApexIQ/skillsmith

Made for: Claude Code, Codex.

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 atomic_execution

README.md
[![agentmods](https://agentmods.dev/badge/skills/apexiq/skillsmith/atomic_execution/github.svg)](https://agentmods.dev/skills/apexiq/skillsmith/atomic_execution)
Your own site
<a href="https://agentmods.dev/skills/apexiq/skillsmith/atomic_execution"><img src="https://agentmods.dev/badge/skills/apexiq/skillsmith/atomic_execution/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for atomic_execution

Your own site · 80×15
<a href="https://agentmods.dev/skills/apexiq/skillsmith/atomic_execution"><img src="https://agentmods.dev/badge/skills/apexiq/skillsmith/atomic_execution.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 455 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00018 $0.00455
Opus 5 $0.00009 $0.00228
Sonnet 5 $0.00004 $0.00091
Haiku 4.5 $0.00002 $0.00046

Measured 7d ago against content hash 2a66d8785342, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

atomic_execution 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 7d 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.

src/skillsmith/templates/.agent/skills/agentic_lifecycle/atomic_execution/SKILL.md · 66 lines

What it actually says

Atomic Execution Workflow

Use this workflow for every coding task to ensure quality and prevent "Agent Hallucinations".

The Loop

  1. Discuss (Review)
  2. Plan
  3. Execute
  4. Verify

1. Discuss (Review)

Before writing code, understand the context.

  • Read .agent/STATE.md.
  • Read relevant source files.
  • Ask clarifying questions if requirements are vague.

2. Plan (The Blueprints)

Create a specific plan for this specific task. Do not generic plan.

  • For complex tasks: Create/Update .agent/plans/current_task.md.
  • For simple tasks: Output a markdown checklist in the chat.

Checklist Format:

- [ ] Create `file_a.py` with function `x`.
- [ ] Update `file_b.py` to import `x`.
- [ ] Run test `test_x.py` to verify.

3. Execute (Atomic Steps)

Write code in small, verifiable chunks.

  • Do not write 5 files at once.
  • Do write one module, then the next.
  • Do use edit_file or write_file tools precisely.
  • Rule: If you edit a file, you must know its current content (read it first).

4. Verify (Trust, but Verify)

Never claim a task is done without proof.

  • Compile/Lint: Run the build command.
  • Test: Run specific unit tests (pytest tests/test_feature.py).
  • Manual Check: If UI, verify the component renders (conceptually or via screenshots if available).

Completion

Once verified:

  1. Update .agent/STATE.md.
  2. Mark the item as done in .agent/ROADMAP.md (if applicable).
  3. Notify the user.
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. 7d ago First seen · 66 lines · 18 tokens per session scan A 2a66d8785342

Subscribe to this mod's changes

atomic_execution is a skill published in the GitHub repository ApexIQ/skillsmith (5 stars, last pushed 5mo ago), licensed MIT. It adds 18 tokens to every session and 455 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 2026-09-03.

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