Security & Testing Agent Skills for DeepSeek Harness

This skill should be used when the user asks to write, review, debug, optimize, test, fuzz, port, harden, profile, or design software in…

Use only when writing/updating/fixing C++ tests, configuring GoogleTest/CTest, diagnosing failing or flaky tests, or adding…

C# and .NET testing patterns with xUnit, FluentAssertions, mocking, integration tests, and test organization best practices.

Explore a codebase to find opportunities for architectural improvement, focusing on making the codebase more testable by deepening shallow…

Test-driven development with red-green-refactor loop.

Identify mission-critical (CbC-mandatory) code in a change, discharge its correctness claims through a pluggable verifier, record the…

On-chain analysis and transaction forensics for blockchain security investigations.

Use when planning, running, or learning from chaos engineering experiments.

Run chaos engineering experiments using Chaos Monkey, Litmus, or Gremlin

Generate characterization tests to capture and verify existing behavior before migration

This skill uses the owasp-compliance-checker plugin to automatically identify potential security vulnerabilities based on the OWASP Top 10…

Use when the user wants a serious checkpoint before continuing work, especially after meaningful implementation, refactor, audit…

Harden a CI/CD delivery pipeline against Insufficient Flow Control (CICD-SEC-1).

Detect and prevent self-hosted CI runner abuse (CICD-SEC-7).

Risk-paranoid interrogation of any plan that touches data, compliance, or production access.

Secure Clari API tokens and implement data handling best practices.

Hardens Claude Code environments using a three-layer defense system to prevent prompt injection and secret leakage.

Implement credit spending limits, data privacy enforcement, and input

Troubleshoot common Clerk errors and issues.

Implement user sign-up and sign-in flows with Clerk.

Handle user data, privacy, and GDPR compliance with Clerk.