Yes — Claude Code skills are isolated by filename, so installing both is safe. They only conflict if they share the same trigger phrase, which is rare. Read each SKILL.md before installing to confirm the trigger patterns don't collide.

Are these skills free?

Yes — every skill listed on ClaudSkills is free to install. The catalog itself is published under CC BY 4.0; per-skill SKILL.md license is set by the original author. Check each skill page's Attribution section for the upstream license.

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cover vs detecting-insecure-deserialization

Q: What's the difference between cover and detecting-insecure-deserialization?

Both are Claude Code skills in the Dev Tools category. cover: Generate and run comprehensive test suites — unit tests, integration tests with real services (testcontainers/docker-compose), and Playwright E2E tests. Analyzes coverage gaps, spawns parallel test-generator agents per… detecting-insecure-deserialization: Scan a source tree for unsafe-by-default deserialization APIs: Python pickle.loads / cPickle / shelve / dill, Ruby Marshal.load / YAML.load (pre-3.1 default), Java ObjectInputStream.readObject, PHP unserialize, .NET… Compare the side-by-side metadata and sample code on this page to pick the right one for your workflow.

Two Dev Tools Claude Code skills, side by side. Pick the right skill for your workflow with a side-by-side look at metadata, sample code, and install commands.

Side-by-side

Name	cover	detecting-insecure-deserialization
Description	Generate and run comprehensive test suites — unit tests, integration tests with real services (testcontainers/docker-compose), and Playwright E2E tests. Analyzes coverage gaps, spawns parallel test-generator agents per…	Scan a source tree for unsafe-by-default deserialization APIs: Python pickle.loads / cPickle / shelve / dill, Ruby Marshal.load / YAML.load (pre-3.1 default), Java ObjectInputStream.readObject, PHP unserialize, .NET…
Category	Dev Tools	Dev Tools
Sub-category	scaffolders	linters-formatters
Tags	tool:docker type:generator type:integration	lang:python lang:javascript type:audit
Author	OrchestKit	Jeremy Longshore <[email protected]>
License	MIT	MIT
Install	`/add-skill cover`	`/add-skill detecting-insecure-deserialization`

Tag overlap

Shared —

Only in cover tool:docker, type:generator, type:integration

Only in detecting-insecure-deserialization lang:javascript, lang:python, type:audit

Sample code from each SKILL.md

cover

/ork:cover authentication flow
/ork:cover --model=opus payment processing
/ork:cover --tier=unit,integration user service
/ork:cover --real-services checkout pipeline

detecting-insecure-deserialization

python3 ${CLAUDE_PLUGIN_ROOT}/skills/detecting-insecure-deserialization/scripts/scan_deserialization.py /path/to/repo

When to choose each

cover — Generate and run comprehensive test suites — unit tests, integration tests with real services (testcontainers/docker-compose), and Playwright E2E tests. Analyzes coverage gaps, spawns parallel test-generator agents per…

detecting-insecure-deserialization — Scan a source tree for unsafe-by-default deserialization APIs: Python pickle.loads / cPickle / shelve / dill, Ruby Marshal.load / YAML.load (pre-3.1 default), Java ObjectInputStream.readObject, PHP unserialize, .NET…

Both are free to install. If you're unsure, install both — Claude Code skills are isolated by filename and only collide if their trigger phrases overlap (rare). The richest signal is the SKILL.md body itself — open both skill pages and read the first paragraph of each.

Open cover → Open detecting-insecure-deserialization →

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cover vs detecting-insecure-deserialization

Side-by-side

Tag overlap

Sample code from each SKILL.md

cover

detecting-insecure-deserialization

When to choose each

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