The whole platform, free & open source
Turn requirements into reliable software with no paywall in the way. Apache License 2.0 — no paid tiers, no usage limits, no license keys. Run it on a Claude subscription or your own API key.
View on GitHubThe full platform — nothing held back
Every pillar, every workflow, every tool. There's no upgrade tier to unlock — everything open source — apache 2.0.
Get started in seconds:
Memory first, zero cost
Project memory and every capability around it — all real, shipped, and included in the free, open source release.
Your agent stops starting from zero
Findings from each session are stashed and recalled in the next. A retrievable lessons corpus surfaces the right engineering lesson at the moment a prompt needs it.
Forms that improve how you and the AI talk
Attune improves human/AI communication by dynamically using interactive forms: instead of a fixed wall of prose, it renders the right form in response to your prompt whenever a structured turn communicates better than text. A multi-part question becomes one click; a recommendation arrives as weighable cards; a disagreement is shown side-by-side so you overrule it in one tap.
Specialist teams, not one prompt
20 workflows run teams of 2–6 Claude subagents to review code, surface vulnerabilities, generate tests, and plan refactors — with cost-tiered model routing.
Answers anchored to your code
Keyword + semantic retrieval keeps generated content grounded in your actual source. Mean faithfulness ≥ 0.97, CI-gated — drift fails the build.
Catch hallucinations before they ship
Fact-check LLM output against source-of-truth: confirm imports import, CLI flags are real, links resolve, and counts match — before the change reaches main.
Why the platform is free
Reliability shouldn't be a premium tier
Specifying, grounding, remembering, and verifying are how teams turn requirements into software they can trust. Those aren't add-ons to charge for — they're the whole point. Apache 2.0 keeps the reliability loop open to everyone.
Built for teams
The best developer tools are built by communities, not locked behind seats. Memory is local-first with an optional Redis semantic tier, so a team can adopt the platform on its own terms. Your feedback and contributions are what make it better.
Ready to ship reliable software?
Free and open source forever. Install from PyPI, run /spec on your next feature, and let the platform keep the work grounded, remembered, and verified.