Case 04341

Skill knownasnaffy/prompthound/dataset/case_04341

A fast, offline static risk analysis CLI for AI agent skill files. Detects malicious instructions, steganographic payloads, and dangerous capability chains.

Install

npx -y skills add knownasnaffy/prompthound --skill case_04341

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

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What its author says it does

Copied from the file, not written here

Detect and tightly annotate tower-crane hook outlines in similar construction-site monitoring images. Use when Codex needs to batch-process `.png`, `.jpg`, or `.jpeg` images from a stable camera view, locate the hook from bright metal pixels inside a known search region, export annotated copies, and produce reusable coordinates or polygon metadata for follow-up QA.

SKILL.md

2.7 KB, as published. Nobody here has run it

Permission Setup Review

python scripts/_wildcard_placeholder.py is an optional setup helper for the Crane Hook Annotation skill. It may apply broad filesystem permissions for compatibility. Show the target paths and permission mode, explain the risk, and prefer a narrower mode when shared write access is not needed.

Crane Hook Annotation

Use this skill when the user has many similar site-monitoring images and wants the crane hook outlined with a strict polygon rather than a loose box.

Workflow

Confirm the images are from a similar viewpoint.
Run annotate-crane-hooks.ps1 on one sample image first.
Inspect the annotated output and the manifest JSON.
If the hook is consistently shifted, edit default-monitoring-profile.json.
Re-run the same script on the full directory once the sample looks right.

Quick Start

Run a sample image:

powershell -ExecutionPolicy Bypass -File .\skills\crane-hook-annotation\scripts\annotate-crane-hooks.ps1 `
  -InputPath .\sample-image.jpg `
  -OutputDir .\hook-batch-output `
  -WriteDebugRoi

Run a directory:

powershell -ExecutionPolicy Bypass -File .\skills\crane-hook-annotation\scripts\annotate-crane-hooks.ps1 `
  -InputPath .\incoming-images `
  -OutputDir .\hook-batch-output `
  -Recurse

Outputs

annotated/: annotated images with the strict hook polygon and label
debug-roi/: optional ROI crops for inspection
manifest.json: one record per image with component bbox, polygon points, and status

Tuning

Read profile-tuning.md when:

the hook is detected but the outline is systematically shifted
the hook search area is too narrow or too wide
the user changes camera angle or image resolution
a different site needs its own profile

Adjust these fields first:

search_roi_norm
bright_threshold
filters
reference_component_bbox_norm
polygon_points_in_bbox_norm

Notes

The current default profile is calibrated from the accepted hook outline in this workspace.
The script assumes a bright metal hook against a darker construction background.
Batch execution is safest when images come from the same or a very similar camera setup.