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Become a sponsor to Francesco Mistero

@Kappaemme-git

Francesco Mistero

Kappaemme-git
Italy

I build open-source tools for developers.

I'm Kappaemme. I create practical agent skills, developer tools, and independent experiments — including SlashCMD, a focused library of workflows for Codex, Claude Code, Cursor, and other coding agents.

Everything is designed, documented, tested in real projects, and released free. Several releases have reached hundreds of thousands of developers through X and have been shared by Greg Brockman.

Support my work

If you want to support me personally, choose the $5 tier or a custom amount. It supports all of my open-source work, not just SlashCMD. No logo, advertising, or promotional commitment is required.

Sponsor SlashCMD

Companies can sponsor a specific skill or reserve a clearly labeled placement on SlashCMD. Commercial tiers explain exactly where the logo appears and how long it stays live.

Only sponsors selecting a commercial placement should send their logo, destination URL, and preferred dates to @Kappaemme1926 on X.

What your support funds

  • New open-source skills and developer tools
  • Maintenance, testing, documentation, and demos
  • Independent experiments that stay free and useful

Explore SlashCMD · View all my work on GitHub

Featured work

  1. Kappaemme-git/codex-first-customer-finder-skill

    A Codex skill that finds evidence-backed potential first customers from recent public signals.

    Python 1,064
  2. JavaScript 993
  3. Kappaemme-git/codex-complexity-optimizer

    Codex skill for safe codebase complexity analysis and performance optimization reports

    Python 914
  4. JavaScript 155
  5. Kappaemme-git/codex-phone-lab

    Codex skill for building Expo apps live on a real phone

    Shell 94
  6. Kappaemme-git/codex-bug-reproducer

    Consent-first Codex skill that reproduces bugs and proves fixes with red-to-green evidence

    Python 76

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Select a tier

$ a month

You'll receive any rewards listed in the $15 monthly tier. Additionally, a Public Sponsor achievement will be added to your profile.

$15 a month

Select

Support the continued release of free, open-source agent skills on SlashCMD.

  • Public supporter recognition on SlashCMD
  • Helps fund new skill releases
  • GitHub handles billing, receipts, and cancellation

$30 a month

Select

Support my open-source work, agent skills, and independent projects — not tied to SlashCMD advertising or a commercial placement.

  • Sponsor badge on your GitHub profile
  • Helps fund new free and open-source releases
  • Supports every project I build, not just SlashCMD

No promotional deliverables are included.

$50 a month

Select

Support the continued release and maintenance of free, open-source agent skills through SlashCMD.

  • Everything in the personal support tier
  • Public supporter recognition on SlashCMD
  • Helps fund new skill releases, documentation, testing, and demos
  • GitHub handles billing, receipts, and cancellation

This is a supporter tier, not a commercial product placement.

$99 a month

Select

Place your developer tool beside one relevant SlashCMD skill for one month.

  • Everything in the $50 supporter tier
  • Logo + destination link on one agreed skill page
  • Listed on the SlashCMD sponsor page

After checkout, send the logo, URL, preferred skill, and launch date to @Kappaemme1926 on X.

$249 a month

Select

Show your developer product where people browse SlashCMD skills for one month.

  • Everything in the $99 tier
  • Featured logo + link inside the homepage catalogue
  • Featured placement on the sponsor page
  • Transparent thank-you post on X

Send logo, URL, and preferred start date to @Kappaemme1926 after checkout.

$499 a month

Select

Own the main SlashCMD sponsor placement for one month.

  • Exclusive top announcement bar
  • Logo + link on the homepage, catalogue, and every skill page
  • One dedicated sponsor post on X
  • One partner in your product category

Only one partner is accepted per month. Confirm availability with @Kappaemme1926 on X before checkout.