--- title: "Reply Tidy" description: "A high-performance webhook system that moderates Threads comments with OpenAI, combining free keyword rules with batched AI moderation and a human review queue." url: "https://briansunter.com/projects/reply-tidy" --- Jul 19, 2026 Launched # Reply Tidy A high-performance webhook system that moderates Threads comments with OpenAI, combining free keyword rules with batched AI moderation and a human review queue. [View Source](https://github.com/briansunter/comment-cop) TypeScript TanStack Start Drizzle ORM PostgreSQL OpenAI Threads  ## Overview Reply Tidy is a webhook system for moderating Threads (Instagram) comments with OpenAI. The handler verifies, enqueues, and returns 200 in milliseconds, well inside Meta’s 10-second window. Then a Postgres-backed worker makes moderation decisions. Keyword rules run first for free; remaining comments go to OpenAI’s `omni-moderation-latest` endpoint in a single batched call, and per-user category thresholds decide HIDE vs REVIEW vs ALLOW. - Website: - Blog: - GitHub: ## Features - Instant webhook acknowledgement inside Meta’s timeout, with dual-format envelope support - Batched AI moderation via OpenAI `omni-moderation-latest` with per-user category thresholds - Per-user moderation settings: shadow mode (WOULD\_HIDE), author allow/blocklists - Human review queue with approve, hide, unhide, false-positive, and requeue actions - Long-lived token exchange at sign-in with automatic refresh within 7 days of expiry - Postgres worker queue using `FOR UPDATE SKIP LOCKED` with deduplication and exponential backoff - Crash-recoverable manual hide/unhide via committed, expiring claim tokens - Full moderation evidence (`moderation_source`, `moderation_reason`, categories JSONB) and timed audit redaction - Bounded custom rules: up to 100 stored, 50 active, 10 AI rules, five concurrent AI evaluations ## Technology Stack - TypeScript on Bun - TanStack Start + Drizzle ORM + Better Auth - PostgreSQL (Docker) worker queue - OpenAI `omni-moderation-latest` - Threads Graph API (`graph.threads.net`) ## Share this project