AI at Polygon · Software developer & author · Prev: Tinder, Google, American Express, MyFitnessPal, Groupon and more
Building autonomous loops and skills that let coding agents take work from spec to merged PR.
25+ years of shipping software, most of it through my consulting company Agilevent:
Google · Facebook · Disney · Warner Bros. · DreamWorks · BMW · American Express · Tinder
MyFitnessPal · Groupon · Pandora · MongoDB · Polygon · Yale University · Atlantic Records
Singer · Poynt · Invoy · Refactor Health · 447 Media (Andy Frisella/1st Phorm)
Skills and plugins for Claude Code, Codex, Cursor, and any agent that supports the Agent Skills spec.
| Project | Stars | Lang | What it does |
|---|---|---|---|
| loop-skills |  |
 |
Bounded autonomous loops: spec to stacked PRs, PR review autopilot, Dev → QA → Reviewer teams, multi-LLM convergence |
| kamal-skills |  |
|
20+ skills for deploying and operating apps with Kamal, grounded in the official docs |
| claw-llm-router |  |
 |
Local OpenClaw router that sends each prompt to the cheapest capable model. Cuts LLM spend 40 to 80% |
| plugin-marketplace |  |
|
Engineering plugins: codebase analyzer, release notes from Conventional Commits, past-conversation search, skill scout |
Tip
Add the loop plugins to Claude Code:
/plugin marketplace add donnfelker/loop-skills
/plugin install pr-autopilot@loop-skillsOr install skills for any agent with npx skills:
npx skills add donnfelker/loop-skills
npx skills add donnfelker/kamal-skillsEach plugin in loop-skills is a bounded autonomous loop. It iterates on one artifact, checks a termination condition (a quiet round, two clean passes, a safety cap), and commits every round so you get an audit trail.
| Plugin | Loop |
|---|---|
| spec-development | Imports a plan into Linear, Jira, ClickUp, Asana, Notion, or GitHub Projects, then turns a parent ticket into N stacked PRs and drives each one to merge-ready |
| dev-team | Runs one ticket through Dev → QA → Reviewer until it lands as a reviewed commit |
| pr-autopilot | Watches a PR, fixes review comments, CI failures, and merge conflicts, replies to threads, and re-requests review until a quiet round |
| triangulated-code-review | Runs independent reviewers (comprehensive, security, Codex, adversarial), then a QA pass that throws out findings it can't substantiate |
| multi-llm-convergence | Alternates Claude and Codex reviews on a plan, PRD, or diff until both agree it clears the bar |
spec-development calls dev-team for each subtask and pr-autopilot for each PR, so one command takes a spec to a stack of reviewed PRs.
kamal-skills teaches your agent Kamal: setup, config, deploys, rollbacks, secrets, the proxy, accessories, cron, server hardening, and the 1.x to 2.0 upgrade. Every command, flag, and config key comes from kamal-deploy.org.
Important
These skills run real commands against your servers. Pair them with Destructive Command Guard and its platform.kamal pack so an agent can't run kamal remove on production by mistake.
| Product | What it is |
|---|---|
| Listomo | Email marketing on top of SendGrid. Unlimited contacts and lists, intake forms, API, webhooks, Zapier, and an MCP server |
| ForTime | Free workout timer for CrossFit and HIIT: For Time, EMOM, Tabata, intervals, Fight Gone Bad. No ads, no subscriptions. iOS and Android |
| Knurl Fitness | The fitness brand behind ForTime and Knurl Tape |
| Book | Year | About |
|---|---|---|
| The Freelance Playbook | Fall 2026 | How to start, survive, and thrive as a freelancer or consultant. Become a beta reader |
| Freelance Tactics | 2021 | 10 tactics new freelancers need: rates, health insurance, clients, cash flow, and taxes |
| Android Application Development For Dummies | 2010 | The bestselling beginner's guide to building and publishing Android apps (Wiley) |
| Android Tablet Application Development For Dummies | 2011 | Building Android tablet apps, from setup to the Android Market (Wiley) |
| Android Application Development For Dummies, 2nd Ed. | 2012 | The fully updated second edition, with Michael Burton (Wiley) |
| Android Developer Tools Essentials | 2013 | Contributor. Wrote the introduction to Android Studio (O'Reilly) |
Former co-host of Fragmented, the Android and AI Developer Podcast.
Weekly essays on thinking clearly and building freely at donnfelker.substack.com. Video at YouTube.