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Code Regression Risk Analyzer
by heyhridyansh
Analyze code changes to map dependency blast radius, identify breaking contract changes, and score deployment risk.
Free
See it in action
You say
Analyze the regression risk for this diff involving a change to the shared user_identity middleware and the updated PostgreSQL schema for the accounts table.
Your agent does
Risk Verdict: Moderate. The change to user_identity impacts 4 downstream services.
Regression Scenarios:
- Failure Mode: Legacy session tokens will fail to deserialize.
- Impact: High (Auth failures).
- Mitigation: Implement dual-read logic before full migration.
About this skill
The problem
Static analysis and unit tests often miss how a code change impacts the broader system. Developers struggle to identify the "blast radius" of refactors or schema changes until they hit production.
What it does
- Analyzes Git diffs and patches to identify unintentional breaking changes in existing behavior.
- Maps direct and indirect dependencies, including shared databases, caches, queues, and event emitters.
- Classifies contract changes in APIs, schemas, and signatures as compatible, breaking, or unverifiable.
- Generates concrete regression scenarios with failure modes, likelihood, and impact assessments.
- Audits rollback plans and feature flag strategies to ensure stateful changes can be safely reverted.
Frameworks & tools
Works with Git diffs, PR patches, and commit ranges. Agnostic to programming languages but specialized in systems involving APIs, message queues, and databases.
Why this beats prompting it yourself
This skill goes beyond "reading code" by systematically tracing side effects across the infrastructure layer. It follows a rigorous risk rubric that forces identification of hidden data and operational risks that basic LLM prompts typically overlook.
Use cases
- Reviewing refactors of shared utility libraries used by multiple services.
- Evaluating the safety of database schema migrations and data backfills.
- Checking backward compatibility for public API or event schema updates.
- Planning release containment for high-stakes deployments.
Known limitations
Cannot execute code or run tests to verify behavior. Performance suffers if multiple unrelated pull requests are combined into one analysis.
How to install
Drop the file into your AI Agent. Works with Claude, Cursor, ChatGPT, and 20+ more.
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Creator
I create practical, AI-ready skills for Cursor, Claude Code, Codex CLI, Replit, and other agents that support the SKILL.md format. My skills focus on specific business and workflow problems, including ecommerce creative audits, design quality checks, prompt and skill validation, content systems, and process automation. Each skill is built with clear inputs, structured outputs, defined permissions, safeguards, and real-world usability.
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