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    Regression Guard

    2

    Automated risk classification and regression checking to stop AI agents from breaking your codebase.

    $5

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    Example session with this skill installed

    Show me what the Regression Guard dashboard and analysis report look like.

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    • Compiled the agent-regression-guard

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    About this skill

    The problem

    AI coding agents break previously working code 3 out of 4 times (SWE-CI benchmark, March 2026). Developers spend 38% of their week fixing bugs they didn't write. 88% of teams need 2-3 deployment cycles just to verify a single AI fix.

    The issue isn't that AI writes bad code. It's that it silently breaks things in other files while you're not looking. Tests pass. The build passes. Then something breaks in production because the agent changed a function signature and didn't update a caller three directories away.

    How Regression Guard fixes this

    It runs automatically after every code change — a checkpoint before your code goes anywhere near a test suite. The agent classifies the risk, traces dependencies, and checks for scope creep. You only hear about it when something's wrong.

    • Silent on trivial changes — no noise, no friction. Most changes pass invisibly.
    • Escalates automatically — a 2-line edit that changes a function signature? That's a Tier 3 check. No manual trigger needed.
    • Catches what tests miss — behavioral contract checks caught a breaking signature change that both `tsc` and `vite build` silently passed in our tests.
    • Scope creep detection — the agent checks "did I actually do what was asked?" and flags when it went off-piste.

    Three tiers, right-sized checking

    Not every change needs a full audit. Regression Guard classifies risk and scales verification accordingly:

    • 🟢 Tier 1 — Trivial edits (1 file, <10 lines). Signature scan + import check. ~200 tokens.
    • 🟡 Tier 2 — Moderate changes. Caller trace + alignment check + test suite. ~1,500 tokens.
    • 🔴 Tier 3 — Risky changes. Transitive dependency trace + behavioral contract + full alignment audit. ~4,000 tokens.

    Works everywhere

    Claude Code, OpenClaw, Cursor, Codex CLI, Gemini CLI — no configuration required. Drop it in your skills folder and it works immediately.

    Tested and validated

    Tested by Claude Opus 4.7 on a real TypeScript codebase. The behavioral contract check and caller trace caught regressions that TypeScript's type checker and Vite's build process both missed. The checkpoint philosophy — reveal problems, let the agent decide — was specifically validated as the right design approach.

    • May not detect regressions in dynamic imports or string-based calls.
    • Effectiveness depends on local git history for diffing.
    • High-tier checks increase token consumption for large refactors.

    How to use

    1. 1

      Connect your agent to the Agensi MCP

      Copy the prompt and paste it into Claude, ChatGPT, Cursor or any agent that supports MCP. It sets up the connection for you. Manual setup

    2. 2

      Sign in to Agensi

      Your agent shows a sign-in link. Sign in and click Allow.

    3. 3

      Ask for what you need

      Your agent loads this skill and uses it on your task. It always asks before any payment.

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    Software
    Git

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    Terminal / Shell
    Listed6 months ago

    What's inside

    Frequently Asked Questions

    Regression Guard acts as a pre-test checkpoint that classifies the risk of AI-generated edits. It uses multi-tiered dependency tracing to catch "silent" bugs, such as signature changes and scope creep, that traditional compilers and test suites often miss.

    The skill is designed to be "plug-and-play" with no configuration required. Simply drop it into the skills directory of your preferred tool (like Claude Code, Cursor, or OpenClaw), and it will automatically begin monitoring your agent's code changes.

    It is compatible with all major AI coding agents and CLIs, including Claude Code, Cursor, OpenClaw, Codex CLI, and Gemini-based tools. It works across any environment where these agents are active.

    To prevent unnecessary costs, the skill uses a Tier-based system. Trivial edits (Tier 1) use only ~200 tokens, while only complex, high-risk changes (Tier 3) scale up to ~4,000 tokens for a deep behavioral audit.

    Yes, the skill includes a "Scope Creep Protection" feature. It compares the final code changes against the original user prompt to ensure the agent stayed on task and didn't make unauthorized or irrelevant modifications to your codebase.

    Your purchase includes the full Regression Guard skill set with all three risk-classification tiers. You will also receive lifetime access to any future updates or refinements to the logic as AI coding models evolve.

    New in Code Quality & Review