agentic-pdca-loop

agentic-pdca-loop is a skill for Claude Code, Codex from ShaftHQ/SHAFT_ENGINE. It costs 26 tokens per session (60 once invoked), scanned A, original, MIT.

A refinement-loop instruction set based on SHAFT PDCA and named Kevin, Bob, and Bruce roles. PDCA means plan, do, check, and act: a repeated cycle for improving work.

In plain words
What is it for?
Use it for SHAFT PDCA work, Kevin/Bob/Bruce role assignments, or refinement loops.
Why use it?
The available description is too brief to establish what each role does or what the loop changes. It only indicates that the add-on is for this particular workflow.

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/shafthq/shaft_engine/agentic-pdca-loop
Any agent
npx skills add ShaftHQ/SHAFT_ENGINE --skill agentic-pdca-loop
Clone the repo
git clone --depth 1 https://github.com/ShaftHQ/SHAFT_ENGINE

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 agentic-pdca-loop

README.md
[![agentmods](https://agentmods.dev/badge/skills/shafthq/shaft_engine/agentic-pdca-loop.svg)](https://agentmods.dev/skills/shafthq/shaft_engine/agentic-pdca-loop)
Your own site
<a href="https://agentmods.dev/skills/shafthq/shaft_engine/agentic-pdca-loop"><img src="https://agentmods.dev/badge/skills/shafthq/shaft_engine/agentic-pdca-loop.svg" alt="Measured on agentmods" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 60 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 $0.00026 $0.00060
Opus 5 $0.00013 $0.00030
Sonnet 5 $0.00005 $0.00012
Haiku 4.5 $0.00003 $0.00006

Measured 3d ago against content hash 327b5d9d72e3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

agentic-pdca-loop 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.

.github/skills/agentic-pdca-loop/SKILL.md · 7 lines

What it actually says

Follow the canonical playbook.

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 · 7 lines · 26 tokens per session scan A 327b5d9d72e3

Subscribe to this mod's changes

agentic-pdca-loop is a skill published in the GitHub repository ShaftHQ/SHAFT_ENGINE (407 stars, last pushed today), licensed MIT. It adds 26 tokens to every session and 60 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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