Show HN: Grist, open source coding harness

Category: devtools

Tags: coding-agent, llm-routing, byok, opencode-plugin, memory

Score: 5.8/10 (Innovation: 5, Technical: 6, Documentation: 8, Utility: 4)

Grist is a coding-agent harness built as a first-class plugin for OpenCode v2. It adds a confidence-gated model router that selects the cheapest capable model per task, along with verified memory, code maps, doctrine injection, and BYOK economics so users pay their provider directly with zero markup. The pitch is frontier-tier output at metered cost, backed by an internal benchmark and a macOS desktop app.

Target audience: AI-assisted developers and engineering teams using coding agents

Repository: https://grist.lol/ · TypeScript · MIT · 4 stars

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