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What you can do with Res

RES is an agent skill that studies a web SaaS product through the browser and writes a knowledge base of its screens, rules, data model, design tokens and production barriers for rebuilding it.

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alextnetto/res on GitHub

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Authorization notice. This tool is dual-use. Only use it on software, sites and systems you own or have explicit permission to test, and follow the relevant licenses and terms of service.

What do you want to do?

3 use cases

  • Turn a SaaS product into a build kit for your team

    Have an agent study a web product in a trial account and hand back a report and a zip for rebuilding it.

    View prompt
    Using the res skill from the alextnetto/res repo, study <product> for the <market> market through the trial browser profile, and do not ask me questions until finished. Expect a re-<product>/ folder with REPORT.html and a handoff zip. Verify that REPORT.html links every rule and barrier ID and that sandbox/ledger.csv lists no writes left unresolved.

  • Find what blocks a clone from launching

    Get a ranked list of integrations, licenses and approvals a rebuilt product would need before launch.

    View prompt
    Using the res skill in the alextnetto/res repo, study <product> with a charter focused on production barriers for the <market> market, and do not ask me questions. Expect clone/barriers.md inside re-<product>/. Verify that every barrier lists severity, lead time and a mitigation with a source ID.

  • Check a knowledge base and build its report and zip

    Run the RES scripts to validate, render and package a study without starting a new agent session.

    View prompt
    In the res repo, run skills/reverse-engineering-saas/scripts/check-kb.mjs on the folder re-<product>, fix any reported problems, then run build-report.mjs and pack-kb.mjs on the same folder. Expect a passing check, REPORT.html and a zip in the knowledge base folder. Verify that the check reports no failures before packing.

How to use Res

  1. Check you have what it needs: Claude Code, the agent the README names for RES; Node.js 22 or later; A browser tool for the agent, such as Claude in Chrome, Playwright MCP or Chrome DevTools MCP.
  2. Open alextnetto/res on GitHub and read the README and license.
  3. In a terminal, run claude plugin marketplace add alextnetto/res
  4. Run claude plugin install res@res, then start a new Claude Code session.
  5. Create a trial account of the product with an email you own, and log in to it in a separate Chrome profile that your agent's browser tool uses.
  6. Ask the agent to study the product for your market and scope, and to use the trial profile without asking you questions until it is done.

These steps come from our top use case, Turn a SaaS product into a build kit for your team, which also has a copy-paste agent prompt.

Res alternatives · Best AI repos for Software and DevOps

About this repo

  • Who it is forProduct and engineering leads who need to rebuild or compete with a web SaaS product and want a documented handoff for their team or coding agent.
  • Why it is hot
  • LanguageJavaScript
  • Sourcegithub.com/alextnetto/res · Back to Hot repos

Requirements

  • Claude Code, the agent the README names for RES
  • Node.js 22 or later
  • A browser tool for the agent, such as Claude in Chrome, Playwright MCP or Chrome DevTools MCP
  • A trial account of the target product that you create, logged in within a separate Chrome profile
  • Permission to study the product under its terms
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Questions about Res

What is Res?

RES is an agent skill that studies a web SaaS product through the browser and writes a knowledge base of its screens, rules, data model, design tokens and production barriers for rebuilding it. It is an open-source project on GitHub: https://github.com/alextnetto/res.

Who is Res for?

Product and engineering leads who need to rebuild or compete with a web SaaS product and want a documented handoff for their team or coding agent.

What can I do with Res?

3 use cases so far, for example: Turn a SaaS product into a build kit for your team; Find what blocks a clone from launching; Check a knowledge base and build its report and zip. Each has steps and a copy-paste agent prompt.

What do I need to run Res?

Claude Code, the agent the README names for RES; Node.js 22 or later; A browser tool for the agent, such as Claude in Chrome, Playwright MCP or Chrome DevTools MCP; A trial account of the target product that you create, logged in within a separate Chrome profile.

What are alternatives to Res?

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

Is Res 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.