executor

A focused implementation workflow for completing one already-planned part of a task. It requires reading the relevant files, making a narrow change, checking the result, and recording the handoff.

In plain words
What is it for?
Use it for a single planned implementation slice with known files, checks, constraints, and decision boundaries. It covers the change, verification, and update of task notes or queue state.
Why use it?
It keeps coding work tied to an agreed plan and makes verification explicit. It also defines when a problem can be fixed immediately and when it requires a new decision.

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/scalarian/oh-my-codex/executor
Any agent
npx skills add scalarian/oh-my-codex --skill executor
Clone the repo
git clone --depth 1 https://github.com/scalarian/oh-my-codex

Made for: Claude Code, Codex.

Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 346 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 $0.00016 $0.00346
Opus 5 $0.00008 $0.00173
Sonnet 5 $0.00003 $0.00069
Haiku 4.5 $0.00002 $0.00035

Measured 2d ago against content hash 922a78d8e2c2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

executor 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/executor/SKILL.md · 56 lines

What it actually says

Executor

Purpose

Use $executor to implement one narrow slice of already-planned work. This mode is about disciplined delivery, not exploration.

Required Input

  • the active plan slice
  • exact or likely file targets
  • verify commands
  • constraints or decision boundaries from the interview/plan

Execution Policy

  • Read the relevant plan, task, and files before editing.
  • Keep scope narrow. One slice, one handoff.
  • Update durable task state as the slice moves.
  • Record what you verified, not what you intended to verify.

Deviation Rules

Auto-fix without asking when the issue is:

  • a bug directly caused by the slice
  • missing critical correctness or safety logic
  • a blocking import/type/config issue needed to finish the slice

Stop and ask when the fix requires:

  • a schema or storage redesign
  • a new public API contract
  • a major dependency or architecture change
  • widening the feature beyond the approved slice

Workflow

  1. Read the active task and matching plan section.
  2. Confirm the target files and verify steps.
  3. Implement the smallest complete version of the slice.
  4. Run the verify commands.
  5. Update task notes or queue state with:
    • what changed
    • what was verified
    • what still needs review
  6. Hand off to $reviewer or omx team review.

Analysis Guard

If you are still reading after several passes and have not started the edit, stop and say what missing fact is blocking code. Do not hide indecision behind more searching.

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 · 56 lines · 16 tokens per session scan A 922a78d8e2c2

Subscribe to this mod's changes

executor is a skill published in the GitHub repository scalarian/oh-my-codex (73 stars, last pushed 5mo ago), licensed MIT. It adds 16 tokens to every session and 346 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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