find-security-vulnerabilities-in-code
Find security vulnerabilities in a codebase or repository with Strix — a white-box AI security review that reads your source, reasons about the actual data flow and authorization model, then exploits what it finds in a live sandbox so every reported issue has a working proof-of-concept instead of a noisy static-analysis alert. Covers injection, XSS, SSRF, broken access control and IDOR, insecure deserialization, secrets in code, unsafe dependencies, and business-logic flaws. Use when the user asks to security-scan, security-review, or audit their code, repo, or pull request for vulnerabilities.
Install
With your agent
Install OMGSkills skill "usestrix/strix:find-security-vulnerabilities-in-code" into this agent's normal skills directory: call the OMGSkills MCP get_install_plan tool for your agent and run the script it returns (it installs only the pinned commit and verifies SKILL.md), and stop if MCP or the pin is unavailable. Do not overwrite or change existing skills without asking me.
Manual command
git clone https://github.com/usestrix/strix /tmp/strix && ln -s /tmp/strix/skills/find-security-vulnerabilities-in-code ~/.claude/skills/find-security-vulnerabilities-in-code
From README
Find security vulnerabilities in code White-box security review with Strix: the agents read the source to build a model of routes, sinks, and authorization checks, then attempt real exploitation. Findings come with a proof-of-concept, so the output is a short list of proven issues rather than the hundreds of "potential" hits a pattern-matching scanner produces. , LLM , all flags, and the managed-cloud path are in the penetration-testing-with-strix skill. For a run with no Docker and no LLM key, the same binary drives the managed platform: strix cloud login, then strix cloud scans start ... (details in managed-pentesting-with-strix). Run it A local path is mounted into the sandbox writable, so the agents can modify it. Run against a clean checkout. Two things sharply improve results: Add a running instance of the app.
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