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amphi.

Amphi is a platform for structured debate. One passage and one question a day, with sourced steelmen, a logic check on your argument, and a public-domain library next to the thread. I designed, built, and deployed it solo. It is in beta.

By the numbers

1,021 commits, all mine, between June 15 and October 4, 2026
273 test files, with typecheck, lint, tests, and build running on every push
69 Postgres migrations on Supabase with row-level security
116 row-level security policies rewritten and 39 foreign-key indexes added in one hardening pass
8 rooms on 1 shared feed
4 packages in one TypeScript monorepo: web app, API, typed contracts, UI
Live at amphi-forum.org since July 27, 2026

Links

The Amphi mascot, lifted from the app. It leans toward your cursor and argues back. Click it for another line.

Positions. Amphi reads what you write and keeps a dated record of what you seem to hold, each stance tied to your own quote. Here that is 12 questions, 13 stances, and 14 quotes. When two of your statements conflict, as on free will above, it asks which one is current. Any stance can be sent to a spar to see if it holds.
Map. The same stances drawn as a graph across 4 fields. Green is accept, red is reject. Solid lines mean one position follows from another, dashed lines mean two positions pull apart, and dotted lines mark pairs that cannot both hold.

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