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What you can do with Simplify Codebase

An Agent Skill that helps coding agents find and remove accidental complexity in an existing codebase while keeping still-valid behavior, boundaries and compatibility intact.

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tt-a1i/simplify-codebase on GitHub

Third-party repos we don't own or vouch for. AI-generated use cases can be wrong: review everything and run at your own risk.

What do you want to do?

4 use cases

  • Audit a whole repo for safe simplification candidates

    Get a ranked list of simplification candidates with proof records, counterexamples and blind spots, with no file changes.

    View prompt
    Use $simplify-codebase on the repository at <path to repo>. Run a broad read-only Survey and do not modify any files. Expected output: ranked proof records with coverage, counterexamples, open questions and the next evidence needed. Verify that every candidate names its consumers and its deletion boundary.

  • Decide if readiness flags are duplicate state

    Check whether several readiness flags express distinct lifecycle guarantees or just repeat the same state.

    View prompt
    Use $simplify-codebase in Focused Survey mode on <subsystem path> to decide whether the readiness flags <flag names> express different lifecycle guarantees or repeated state. Do not modify files. Expected output: one verdict per flag with its consumers and lifecycle owner. Verify that each verdict cites the readers and writers it traced.

  • Review and merge simplification findings from a PR

    Check simplification suggestions from a pull request or another agent, keeping the evidence and dropping the rest.

    View prompt
    Use $simplify-codebase to review and consolidate the simplification suggestions in <PR link or notes file>. Keep only findings with evidence and reject the rest with a reason. Expected output: a consolidated list with proof records and rejected items. Verify that every kept finding names its consumers and deletion boundary.

  • Generate an interactive Cleanup Map from an audit

    Turn a confirmed audit into a desktop HTML map with linked findings and evidence drawers.

    View prompt
    Use $simplify-codebase to audit <repo path> and generate a Cleanup Map with Finding deep links after I confirm. Do not present reachable relationships as runtime impact. Expected output: a validated interactive HTML file alongside the text proof records. Verify that every node on the map matches a confirmed finding in the text report.

How to use Simplify Codebase

  1. Check you have what it needs: An AI coding agent that loads SKILL.md skills, such as Codex; Git, to clone the skill into the Codex user skills folder; The target repository checked out locally.
  2. Open tt-a1i/simplify-codebase on GitHub and read the README and license.
  3. Clone the skill into your Codex user skills folder with git clone https://github.com/tt-a1i/simplify-codebase.git ~/.codex/skills/simplify-codebase (inferred, check the README)
  4. Start a new task so the skill directory reloads.
  5. Open the target repository and ask the agent to use $Simplify Codebase to audit it, list the safest high-value candidates, and not modify any files.
  6. Read each proof record and check the named production, test, dynamic and external consumers.

These steps come from our top use case, Audit a whole repo for safe simplification candidates, which also has a copy-paste agent prompt.

Simplify Codebase alternatives · Best AI repos for Software and DevOps

About this repo

Requirements

  • An AI coding agent that loads SKILL.md skills, such as Codex
  • Git, to clone the skill into the Codex user skills folder
  • The target repository checked out locally
  • Node.js 18 or newer, only if you want the optional Cleanup Map visual report
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Questions about Simplify Codebase

What is Simplify Codebase?

An Agent Skill that helps coding agents find and remove accidental complexity in an existing codebase while keeping still-valid behavior, boundaries and compatibility intact. It is an open-source project on GitHub: https://github.com/tt-a1i/simplify-codebase.

Who is Simplify Codebase for?

Engineers and maintainers of large existing codebases who want an agent to shrink the facts, state and contracts their team must keep consistent.

What can I do with Simplify Codebase?

4 use cases so far, for example: Audit a whole repo for safe simplification candidates; Decide if readiness flags are duplicate state; Review and merge simplification findings from a PR. Each has steps and a copy-paste agent prompt.

What do I need to run Simplify Codebase?

An AI coding agent that loads SKILL.md skills, such as Codex; Git, to clone the skill into the Codex user skills folder; The target repository checked out locally; Node.js 18 or newer, only if you want the optional Cleanup Map visual report.

What are alternatives to Simplify Codebase?

Other hot AI repos in Software and DevOps: Harness2, iFixAi, Orca, Diagram Design, AI Memory.

Is Simplify Codebase safe to run?

Deduped does not own, audit or vouch for it. Read the README and license, run it on your own systems first and review every command before you run it.