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Technical specifications for the VibeCheck security auditing protocol.
Version 1.0 — Last updated: 2026.01.10

01. SYSTEM_OVERVIEW

VibeCheck is an autonomous security auditing system designed to identify vulnerabilities in public GitHub repositories. It operates entirely in-memory, leaving no artifacts on disk, and leverages advanced AI to perform heuristic analysis of source code.

"We don't just scan for known patterns—we understand intent, context, and the subtle ways security can fail."

Unlike traditional static analysis tools that rely on regex patterns and predefined rules, VibeCheck uses Claude Opus 4.5's advanced reasoning capabilities to understand code semantics, data flow, and potential exploitation vectors.

02. HOW_IT_WORKS

PHASE_01: INFILTRATION

When you submit a GitHub repository URL, VibeCheck uses the GitHub API (via Octokit) to fetch the repository's file tree. We identify relevant source files (.ts, .tsx, .js, .jsx, .py, .rs, .sol, .go, .rb) while excluding test files, node_modules, and build artifacts.

PHASE_02: ANALYSIS

The collected source code is fed directly into Claude Opus 4.5 with a specialized security auditing prompt. The AI analyzes the code for vulnerabilities, logic flaws, and security anti-patterns. This is not pattern matching—it's genuine code comprehension.

PHASE_03: REPORT

Findings are compiled into a structured report with severity levels, file locations, code snippets, and suggested fixes. The brutalist interface presents findings without sugarcoating—if your code has problems, you'll know.

03. CLAUDE_OPUS_4.5_INTEGRATION

At the heart of VibeCheck is Claude Opus 4.5, Anthropic's most advanced AI model. Unlike traditional security scanners, Claude can:

  • »Understand context: Recognize when a seemingly dangerous pattern is actually safe due to surrounding logic, and vice versa.
  • »Follow data flow: Trace how user input propagates through your application to identify injection points.
  • »Detect logic flaws: Identify authentication bypasses, race conditions, and business logic vulnerabilities that static analysis misses.
  • »Generate suggestions: Provide actionable fix recommendations, not just "vulnerability detected" messages.
[NOTE]

AI analysis is probabilistic. While Claude is remarkably accurate, it may produce false positives or miss certain vulnerabilities. Always validate findings manually.

04. VULNERABILITY_DETECTION

VibeCheck is trained to identify a wide range of security issues, including but not limited to:

[INJECTION]

SQL, NoSQL, Command, LDAP, XPath injection vectors

[XSS]

Stored, Reflected, and DOM-based cross-site scripting

[AUTH_BYPASS]

Missing authentication, broken access control

[SECRETS]

Hardcoded API keys, passwords, private keys

[CRYPTO]

Weak algorithms, improper key management

[LOGIC]

Race conditions, business logic flaws

05. SEVERITY_CLASSIFICATION

[CRITICAL]

Immediate exploitation risk. These vulnerabilities can lead to complete system compromise, data breach, or unauthorized access. Requires immediate attention.

[HIGH]

Significant security risk. May require specific conditions to exploit but poses serious threat. Should be addressed urgently.

[MEDIUM]

Moderate risk. Typically requires chaining with other vulnerabilities or specific user interaction. Address in upcoming sprint.

[LOW]

Minor issues or informational findings. Best practices violations, code quality concerns, or theoretical risks.

06. LIMITATIONS

  • File limit: VibeCheck analyzes up to 15 files per scan to avoid context overflow. Large monorepos may not be fully covered.
  • Public repos only: Private repositories require authentication and are not currently supported.
  • No runtime analysis: VibeCheck performs static analysis only. Runtime vulnerabilities and environment-specific issues may not be detected.
  • AI uncertainty: Results are probabilistic. False positives and negatives can occur. Human review is essential.

07. PRIVACY_&_SECURITY

No persistence: VibeCheck operates entirely in-memory. Repository contents are fetched, analyzed, and immediately discarded. We do not store, cache, or log your code.

Scan history: Recent scans are stored in your browser's localStorage only. This data never leaves your device.

API interactions: Your code is sent to Anthropic's API for analysis. Please review Anthropic's privacy policy for details on how they handle data.

VibeCheck v1.0 // Built with paranoia and caffeine

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