cobol-o-matic: Skill for Claude Code

.claude/skills/clean-workspace/SKILL.md

clean-workspace is a skill for Claude Code from dsheard/cobol-o-matic. It costs 48 tokens per session (1,033 once invoked), scanned C, original, MIT.

A cleanup tool for COBOL reverse-engineering workspaces. COBOL reverse engineering means examining older COBOL programs to document how they work.

In plain words
What is it for?
Resetting output, staging, and analysis state before running a fresh COBOL analysis.
Why use it?
It removes generated reports, temporary staging files, and run state so a new analysis starts with a clean workspace.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: reads .claude/ paths; mentions CLAUDE.md.

This is dsheard/cobol-o-matic's own configuration. It tells Claude Code how to work on cobol-o-matic itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything cobol-o-matic configures →

Reuse

Borrowing it

Nothing to install: this file belongs to dsheard/cobol-o-matic. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/dsheard/cobol-o-matic/main/.claude/skills/clean-workspace/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/dsheard/cobol-o-matic

Made for: Claude Code.

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 clean-workspace

README.md
[![agentmods](https://agentmods.dev/badge/skills/dsheard/cobol-o-matic/clean-workspace/github.svg)](https://agentmods.dev/skills/dsheard/cobol-o-matic/clean-workspace)
Your own site
<a href="https://agentmods.dev/skills/dsheard/cobol-o-matic/clean-workspace"><img src="https://agentmods.dev/badge/skills/dsheard/cobol-o-matic/clean-workspace/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 clean-workspace

Your own site · 80×15
<a href="https://agentmods.dev/skills/dsheard/cobol-o-matic/clean-workspace"><img src="https://agentmods.dev/badge/skills/dsheard/cobol-o-matic/clean-workspace.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,033 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. 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 $0.00048 $0.01033
Opus 5 $0.00024 $0.00517
Sonnet 5 $0.00010 $0.00207
Haiku 4.5 $0.00005 $0.00103

Measured 10d ago against content hash ac2654667c35, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade C, and why

clean-workspace scanned grade C with 1 finding 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 10d 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

4. Remove everything under `staging/` (use `rm -rf staging/*`).
.claude/skills/clean-workspace/SKILL.md · 108 lines

How it starts

The opening of the file, as written. The whole thing — 108 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cleaning a Workspace

Remove all generated artifacts so the workspace is ready for a fresh run.

What to Clean

There are three categories of generated files. Clean all three for a full reset, or selectively clean specific categories.

1. Output Artifacts

Generated markdown files under the output/ directory (path from config.yaml).

output/
├── business-rules/*.md    # Per-program business rules
├── inventory/*.md         # programs.md, copybooks.md, jcl-jobs.md
├── data/*.md              # data-dictionary.md, file-layouts.md, database-operations.md
├── flows/*.md             # program-call-graph.md, batch-flows.md, data-flows.md
├── integration/*.md       # interfaces.md, io-map.md
└── requirements/*.md      # capabilities.md, modernization-notes.md

Remove all .md files from each subdirectory. Preserve the empty directories.

2. Staging Files

Chunked source files and manifests under the staging/ directory (path from config.yaml, default ./staging).

staging/
├── program-facts.yaml          # Cross-program extracted facts
└── {program-slug}/             # One directory per staged program
    ├── manifest.yaml
    ├── data-division.cbl
    └── chunk-*.cbl

Remove everything under staging/. Preserve the empty staging/ directory.

3. Run State Files

JSON state files under the state/ directory that track convergence across iterations.

state/
├── .cobol-re-state.json                       # Default/single-program state
├── .cobol-re-state-{program}.json             # Per-program state
├── .cobol-re-state-{program}-{chunk}.json     # Per-chunk state
├── .cobol-re-state-phase1.json                # Phased run state
└── .cobol-re-state-phase3.json

Remove everything under state/. State files are dotfiles (.cobol-re-state-*.json), so a bare state/* glob will miss them. Use rm -f state/.cobol-re-state*.json to match them explicitly. Preserve the empty state/ directory.

4. Lingering Agent Processes

Read the full file on GitHub · 108 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. 10d ago First seen · 108 lines · 48 tokens per session scan C ac2654667c35

Subscribe to this mod's changes

clean-workspace is a skill published in the GitHub repository dsheard/cobol-o-matic (5 stars, last pushed 5mo ago), licensed MIT. It adds 48 tokens to every session and 1,033 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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