nightshift: autonomous execution layer for the to-prd -> to-issues pipeline

[Shaurya-Sethi]

Hi everyone.

I had been using the Matt's workflow (/grill-me → /to-prd → /to-issues) on multiple projects and found myself running into the same friction after to-issues finished: a board full of well-structured, dependency-ordered issues - and me, manually picking the next unblocked one, pasting context into my agent, waiting, then doing it again.

Initially, I wrote a shell script implementing a ralph loop for claude to tackle open issues, but that grew too large and wasn't usable across different agents.

So I built nightshift - it's a Rust CLI that autonomously works through your issues while you're AFK. Point it at a PRD issue number, pick your agent, and walk away:

nightshift --prd 10 --agent claude --model claude-sonnet-4-6

It's built exclusively for issues produced by to-prd and to-issues. It parses the ## Parent section to scope issues to the PRD, and the ## Blocked by section to resolve dependency order from bodies of open child issues labelled ready-for-agent.

Each issue gets a fresh branch from main, a clean prompt via stdin, and zero shared context from previous issues. If the agent exits but the issue isn't closed, nightshift stops rather than guessing and you can inspect what happened and resume with --issue.

It currently supports five agents that I usually work with: claude, codex, cursor, antigravity, and pi. Adding a new agent is a self-contained change (~20 lines of Rust). The contributing guide has a step-by-step walkthrough.

I kept the design as simple and easily extendible as I could.

Try it out:

cargo install --git https://github.com/Shaurya-Sethi/nightshift

Prerequisites: Rust, gh (authenticated), and your agent of choice. Use --dry-run to see what it would do without actually invoking anything.

Repo: github.com/Shaurya-Sethi/nightshift

I'd love the community's help in making this better and adding support for more agents. Do check it out and leave the repo a star if you like it.