Contra — Adversarial Writing Studio

Adversarial writing studio: free local scan, independent review, revision diffs, venue rehearsal. Private BYOK.

Publish nothing your harshest reader hasn't already attacked. Contra 2.0 is a writing studio inside your browser's side panel. It takes a draft through a decision loop, not a one-shot generation: a free local scan, a publish-ready rewrite, an independent review, a revision you can compare and reject, and a rehearsal for the venue you are about to publish on. The free local scan needs no key and makes no model call. It checks readiness and venue rules for a subscription newsletter or a long-form publishing platform, shows the concrete gaps, and gives you a shareable diagnosis card. Nothing is uploaded. Connect your own model for the full loop: one rewrite, one independent review, local deterministic checks, and a revision candidate. The candidate shows score, check and voice deltas, paragraph-level diffs, paywall movement, and any concrete value moved behind the paid line. Use it, keep the current draft, or restore any earlier version. Up to eight versions are kept in one session; compare any two. Deep Studio rehearses five venue shapes: subscription newsletter, long-form article, forum post, micro-feed thread, and short-video script. It builds three angles, rehearses each, applies a voice guard, optionally runs a blind pairwise tournament, and sends a revision through an acceptance gate before producing a publish pack and venue-shaped preview. Private by architecture: BYOK, your key and your provider; there is no Contra server. Keys are encrypted on your device with AES-GCM; Pro can use a passphrase vault. Zero telemetry, zero analytics, no account. Receipts, history and calibration stay local. General adversarial review is free forever. The free local scan needs no key and does not consume a trial. Platform rehearsal and Deep Studio include one free trial run; Pro is a one-time $9 lifetime license with unlimited runs, custom endpoints, and the passphrase vault.