ai-dev-exec

ai-dev-exec is a skill for Claude Code, Codex from s977043/PlanGate. It costs 57 tokens per session (5,447 once invoked), scanned A, original, MIT.

An implementation workflow for building approved software plans with test-driven development, or TDD, where tests help define the expected behaviour before and during coding. It applies the execution phase of the PlanGate process after approval.

In plain words
What is it for?
Use it to implement tasks after PlanGate approval, following the project's required plan, tests, and execution rules.
Why use it?
It keeps implementation tied to an approved plan and gives the agent explicit checks for the behaviour being built.

Skill for Claude CodeCodex

Installs and runs on its own, but its text points at files inside the plugin that ships it — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed.

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/s977043/plangate/ai-dev-exec
Any agent
npx skills add s977043/PlanGate --skill ai-dev-exec
Clone the repo
git clone --depth 1 https://github.com/s977043/PlanGate

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 ai-dev-exec

README.md
[![agentmods](https://agentmods.dev/badge/skills/s977043/plangate/ai-dev-exec.svg)](https://agentmods.dev/skills/s977043/plangate/ai-dev-exec)
Your own site
<a href="https://agentmods.dev/skills/s977043/plangate/ai-dev-exec"><img src="https://agentmods.dev/badge/skills/s977043/plangate/ai-dev-exec.svg" alt="Measured on agentmods" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,447 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 $0.00057 $0.05447
Opus 5 $0.00028 $0.02723
Sonnet 5 $0.00011 $0.01089
Haiku 4.5 $0.00006 $0.00545

Measured 3d ago against content hash 6056d8b7229c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ai-dev-exec 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 3d 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.

.agents/skills/ai-dev-exec/SKILL.md · 219 lines

How it starts

The opening of the file, as written. The whole thing — 219 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AI-Driven Exec (PlanGate / Codex 共用)

PlanGate ワークフローの exec フェーズ(WF-04 Build & Refine) を Codex / Claude Code 両方で実行する skill。

本スキルは bundled resourcesreferences/)で自己完結する。

パス表記の規約(重要): 本 SKILL.md 中の references/… は、すべて 本スキル ディレクトリからの相対パス(= <skill_dir>/…)であって、導入先リポジトリのルートからの 相対パスではない。実行時はまず <skill_dir>(このファイルが置かれているディレクトリ)を 解決してから使う:

環境 <skill_dir>
plugin 導入先(Claude marketplace) <plugin_root>/skills/ai-dev-exec/
install.sh --claude 導入先 .claude/skills/ai-dev-exec/
Codex 導入先 .codex/skills/ai-dev-exec/
上流リポジトリ(正本側) .agents/skills/ai-dev-exec/

導入先が独自の正本(上流リポジトリの docs/ 配下に相当するもの)を別途保持している 場合は、そちらを優先すること。

前提条件(exec 開始ゲート)

  1. docs/working/TASK-XXXX/approvals/c3.json が存在し、その approval_kind に応じた承認条件を 満たすこと。判別は python3 の strict JSON で行う(非アンカーな grep/sed は c3-prime で 誤動作する。契約 §5):

    record 種別 判別 承認済みと見なす条件
    legacy approval_kind キー なし c3_status: APPROVED
    c3-prime approval_kind: "c3-prime" decision: "AUTO_APPROVED"c3_status は契約 §5 で明示禁止。含まれていたら FAIL)かつ Plan Package 束縛の全数検証 PASS(plan_hash / artifact_hashes 6 要素 / plan_package_hash / source_sha / reviewer verdict 整合)。正本: 同梱 references/c3-prime-contract.md §2〜§5
    それ以外の値 受理拒否(exec 不可)
  2. validate 相当が PASS(plan_hash 整合 / artifact 整合 / EH-3 整合)

  3. exec 入口も上記 1 と同じ分岐で承認済み record のみ受理する(CLI がある環境では CLI 側が機械チェック済み。CLI が無い環境では自分で確認する)

これらが満たされなければ exec を開始しない。実際のコマンド表記(bin/plangate / plangate / CLI 不在)・TASK-XXXX の解決先・CLI が無い環境での代替手順は 「CLI 呼び出し」節を参照する(CLI が無いことを理由にゲートを省略しない)。

settings タスクロック (plangate doctor --check-settings) は V-1 / handoff 完了の前提条件.claude/rules/working-context.md → fallback <plugin_root>/rules/working-context.md が正本)。exec 入口では block しない。詳細は ai-dev-verify skill。

Read First

参照解決順(導入先で必ずこの順に探す)

本 Skill は 上流リポジトリ基準の docs/** パスを直接参照しない(#1232)。docs/**install.sh --claude / plugin(Claude marketplace)/ Codex の 3 経路とも配布対象外であり、 書いた時点で導入先では必ず空振りするためである。参照の解決は次の順で行う:

Read the full file on GitHub · 219 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. 3d ago First seen · 219 lines · 57 tokens per session scan A 6056d8b7229c

Subscribe to this mod's changes

ai-dev-exec is a skill published in the GitHub repository s977043/PlanGate (2 stars, last pushed 3d ago), licensed MIT. It adds 57 tokens to every session and 5,447 once invoked, about $0.0003 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.

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