Build on U.CASH. Get paid.
Ship merged code, microsites, and integrations. Earn 10 to 200 UCASH per bounty, credited to your U Balance.
Publish a U.CASH tutorial video
Publish a video tutorial showing how to build with or use a U.CASH product.
Acceptance criteria
A published video (YouTube or similar) of 3+ minutes, accurate and original, demonstrating a U.CASH product or integration. Share the URL.
Publish a U.CASH case study
Write up a real-world case study of building on or using U.CASH.
Acceptance criteria
A published case study (URL) of a real U.CASH integration or use, with concrete details and outcomes. Original work.
Write a U.CASH thread on X
Share a public thread on X (Twitter) explaining a U.CASH feature or use case.
Acceptance criteria
A public X/Twitter thread of 5+ posts about U.CASH. Original, accurate, with a link to u.cash. Share the thread URL.
Publish a U.CASH explainer article
Write and publish an original article explaining U.CASH on a third-party site (Medium, Dev.to, Substack, and the like).
Acceptance criteria
A published article (live URL, HTTP 200, mentioning U.CASH) of 500+ words on a third-party site. Accurate, original, with a working link back to u.cash.
Create a U.CASH design asset
Design a U.CASH icon set, illustration, or UI kit and share it.
Acceptance criteria
A shared design asset (URL): an icon set, illustration, or UI kit in the U.CASH brand. Original work.
Write a technical blog post
Write a short technical post about building with U.CASH (x402, UCP, SDKs, and the like).
Acceptance criteria
A published blog post (URL) about building on U.CASH. Original and technically sound.
Write an integration guide
Publish a 500+ word integration guide or tutorial for building on U.CASH.
Acceptance criteria
A published guide (URL) of 500+ words, accurate and original, with working code examples.
Contribute to the agents SDK
Extend the agents-u-cash HTTP 402 SDK: a new client, example, or language binding.
Acceptance criteria
A merged pull request into UdotCASH/agents-u-cash by your linked account adding a client, example, or binding.
Publish a U.CASH package to PyPI
Build and publish a new U.CASH Python package or integration to PyPI.
Acceptance criteria
A new package published to PyPI (a version released after this bounty opened). Original, documented, and U.CASH-relevant.
Publish a U.CASH SDK to npm
Build and publish a new U.CASH SDK or integration package to the npm registry.
Acceptance criteria
A new package published to npm (a version released after this bounty opened). Original, documented, and U.CASH-relevant.
Share a U.CASH microsite mockup
Not a coder? Share a Figma or hosted mockup of a U.CASH microsite concept.
Acceptance criteria
A shared mockup URL (Figma or hosted) showing an original U.CASH microsite concept, with a short rationale.
Build a product page for a U.CASH app
Ship a live product or feature page for any *.u.cash app (pay, swap, buy, names, agents, etc.).
Acceptance criteria
A live product page (HTTP 200) mentioning U.CASH, with real content and a responsive layout.
Build a U.CASH landing microsite
Design and deploy an original U.CASH-themed landing page. Live, mobile-responsive, accurate branding.
Acceptance criteria
A deployed, original U.CASH-themed landing page at a live URL (HTTP 200). Mobile-responsive, accurate branding, no placeholder content.
Improve the u.cash marketing site
Help build u.cash pages, components, or content. Open a PR against the site repository.
Acceptance criteria
A merged pull request into UdotCASH/u.cash-new-site by your linked account that improves a page or component.
Add a plugin or SDK to awesome-ucash
Submit a real plugin, SDK wrapper, or integration to the awesome-ucash ecosystem repository.
Acceptance criteria
A merged pull request adding a genuine plugin, SDK, or integration entry to UdotCASH/awesome-ucash by your linked account.
Ship a merged pull request to pay-u-cash
Contribute to the pay.u.cash platform. Open a PR that fixes a real bug or adds a feature, gets reviewed and merged.
Acceptance criteria
A pull request merged into UdotCASH/pay-u-cash, authored by your linked GitHub account. Addresses a real issue, passes review, and is not reverted.