I build AI agents that work on their own, and the systems that keep them honest.

Nightlab is the AI agent I created. It picks its own work and writes the code, and other agents review it before it ships. It now works with a second agent on a different model.

21 changes merged into 6 outside projects · 17 public tools · videos of the work

Merged into other people's projects

Nightlab's pull requests, accepted by the people who run these projects.

Project	Stars	Change
hslee16/Archy	8	fix(conventions): `--emit-headers --write` fills a one-quote docstring, and exits 1 on one it cannot (#785)
hslee16/Archy	8	fix(what-to-refactor-next): report unconsulted git signals as null on the structural lens (#778)
catatafishen/agentbridge	88	fix: create_run_configuration says why validation failed instead of "Error"
hslee16/Archy	8	fix(refactor): give the hotspot lens its own label floor
catatafishen/agentbridge	88	fix: allow grep pipe filters inside quoted $(...) and prose in --body/--title/--notes/--message
hslee16/Archy	8	fix(brief): say an archy.yaml was found but invalid, instead of that none exists (#790)
hslee16/Archy	8	fix(conventions): break a tied family's home on the module name, so it no longer depends on PYTHONHASHSEED (#875)
hslee16/Archy	8	fix(affected,impact): resolve git-root-relative changed paths from a subdirectory (#774)
catatafishen/agentbridge	88	fix(run_tests): report structured results for a failed run (#1169)
karanb192/awesome-claude-code-mods	956	Add seven nightlab-agent mods to seeds
hslee16/Archy	8	fix(mcp): archy_duplicates names `members` in its refusal (#780)
hslee16/Archy	8	fix(cli): archy diff prints a match-time layer error, not a traceback (#821)
hslee16/Archy	8	fix(install): honour CODEX_HOME and XDG_CONFIG_HOME
hslee16/Archy	8	fix(install): refuse a begin marker with no end marker
hslee16/Archy	8	fix(affected): refuse a test_filter that matches no file (#660)
hslee16/Archy	8	fix(dsm): name the near misses when --focus or --package matches nothing (#643)
nrzz/claude-cost-guard	1	Note in budget show when a model budget matches no model in the history
nrzz/claude-cost-guard	1	Note when budget set --model matches no model in the history
software-mansion/argent	3,191	fix: exit 128+signo when tail is killed in server logs -f
AlanEdward19/waymark	3	fix: name all six MCP tools in the start-up context
hslee16/Archy	8	fix(cli,diff,dsm): name the path when a file option is given a directory (#647)

What Nightlab has built

• plugin-lag: Shows which of your installed Claude Code marketplace plugins are pinned to a commit that lags the plugin's upstream...
• agent-undo: Claude Code mod: lists the Edit and Write calls Claude Code and its subagents make, hunk by hunk, and in a git repo the...
• message-times: Claude Code mod: puts the time on each prompt and each reply in Claude Code's main transcript view, and keeps the times...
• still-true: Check a handoff note against GitHub: finds what it says about PRs and issues and prints the claims that are no longer...
• date-check: Claude Code mod: checks the dates and times Claude Code writes into changelogs, logs, release notes and handoffs...
• codex-config-sync: Share one Codex config.toml across machines while each machine keeps its own [projects.*] trust tables
• file-trail: Claude Code plugin: see which files Claude Code read, searched and changed with its file tools
• interrupt-hook: Claude Code plugin: runs your command when you press Escape to interrupt a turn, with a hook-style JSON line on stdin
• agents-skills: Claude Code plugin: lets Claude Code use the skills in .agents/skills/ by copying each one into .claude/skills/ at...
• plan-names: Claude Code mod: saves every approved plan as plans/<date>-<title>.md in your project, and keeps the earlier version...
• subagent-spend: Claude Code plugin: a spend cap for interactive sessions, and per-subagent tokens, rate-limit windows, context fill...
• short-preflight: Check a vertical video before upload: finds what sits under YouTube Shorts' buttons and title, and sound faults
• rerun-receipt: GitHub Action: adds up job time across every rerun attempt of a workflow run, says how much the reruns added and names...
• opencode-subagent-cap: opencode plugin: cap how many subagents
• prompt-state: Claude Code mod: shows under the prompt what Claude Code is doing
• npm-release-check: Look at what npm pack would ship before you release: secrets and private files in the tarball, missing entry points...
• mod-ready: A Claude Code mod template whose one release check runs validate, tests, a type check and npm pack

My own projects

• icm-ops: skills that keep an agent's workspace honest, for Claude Code, Codex and others
• webmcp-verified: tools for MCP and WebMCP agents that answer from real data
• nightcore-sdk: an SDK for verified WebAssembly execution, in Rust, Python and TypeScript

_{Numbers and lists come from GitHub's public data, updated 2026-11-13. Agent-built work is labelled as agent-built.}