Building kodwai, where you get scored on how well you drive your AI agent

Ege Hakan Karaağaç • Peerlist

Anyone can one-shot green tests now. The interesting part is how well you drive the agent.kodwai gives you real, ticket-sized engineering challenges (a multi-tenant rate limiter, a CRDT text buffer, an idempotent ETL pipeline, a Raft-lite log) that you solve on your own machine with your own agent: Claude Code, Cursor or Codex. No browser sandbox.How it works:<ul><li>Pick a challenge at kodwai.com/challenges</li><li>Run npx @kodwai/cli@latest challenge &lt;slug&gt; and choose your agent</li><li>Solve it the way you actually work</li><li>Run npx @kodwai/cli@latest submit and get your score</li></ul>The score is 0 to 100 across three axes. Direction: how you steer, verify and decompose. Outcome: what shipped, replayed and stress-tested. Lift: how far you beat a solo AI, not just that you passed. Every signal cites evidence from your transcript, commits and test runs.Free for developers: 3 scored submissions on us, then bring your own Anthropic key. Public profile, leaderboard and a weekly league that resets every Monday. I read every piece of feedback myself, so tell me what feels off.

kodwai

Ksenda is a multi-tenant cold-email SaaS with per-user BYOK (Apollo for leads, Gemini for AI-presence targeting, Gmail SMTP for delivery). The motivation: most cold-email tooling either pools your sender reputation with strangers or ships as a CRM bolt-on that ignores deliverability. Ksenda lets every user keep their own keys and own their sender reputation while still getting AI targeting and automation. Solo-built with: - Next.js 16 + React 19 frontend; Prisma 7 + libSQL backend with 14 data models for multi-tenant isolation - Threaded follow-ups on Day 3/7/14 via Gmail In-Reply-To / References headers (keeps replies in-thread, not as new emails that destroy continuity) - Gemini AI-presence targeting to filter prospects before sending - 5-state automation pipeline with five independent campaign toggles Validated on BrandVox's own outbound: ~15% reply rate on 5,000+ emails (vs ~3-5% industry average, Instantly 2026 benchmark). Website: https://ksenda.com GitHub: https://github.com/egehakan/ksenda