// The catalogue
Projects you can work on
Each one is a real, half-finished codebase with a backlog of 61 work items between them. You get your own copy, ship one ticket at a time, and every change is reviewed before it counts. Open any project to read its full backlog — nothing is hidden behind signing up.
PROJECT 01 · 5 ITEMS
★ Start hereFirst Ship — start here
New here? Do this one first. Five tiny tickets that teach you how everything works — branches, pull requests, code review, going live — and leave you with a page about yourself, live on the internet, that you built and shipped yourself. About an hour.
HTML · CSS · JavaScript · Git
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PROJECT 02 · 8 ITEMS
Todo — Agile Team
Join a team maintaining a live Todo app. Pick up bugs, tasks, and stories from the backlog, ship them through PRs and code review, and earn verified story points.
React · Next.js · REST API · Agile
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PROJECT 03 · 24 ITEMS
AI Agentic — Build Aria
Join the team building Aria, an AI support agent. Ship real tickets that grow her from raw LLM calls into a full agentic system — LangChain, tools, memory, RAG, multi-agent hand-off, MCP, and evaluation — through PRs, CI, and code review, earning verified story points.
Python · FastAPI · OpenAI · LangChain · RAG · MCP · Agents
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PROJECT 04 · 24 ITEMS
API Development — PayFlow
Join the platform team at PayFlow, a payments company. The API works — but it was built in a hurry. Bring it up to professional standards ticket by ticket: honest status codes, RFC 7807 errors, integer money, cursor pagination, idempotency keys, versioning, scoped API keys, rate limits, signed webhooks, and an enforced OpenAPI contract.
Node.js · Express · REST · API Standards
Read the backlog →Sign in to joinNot sure which to pick? Start with First Ship — five small tickets, about an hour, and you finish with a page of your own live on the internet.