What is lastlight CLAUDE.md?

Project-specific instructions for the nearform/lastlight monorepo, a single repository containing multiple related packages and applications managed as one workspace.

Orienting work in the Last Light workspace, locating applications and packages, understanding workspace dependencies, and using the project's logger instead of direct console output.

They help developers find the right part of the repository and follow its logging and package-structure conventions. The instructions point to more detailed guides for day-to-day development.

How nearform/lastlight configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to nearform/lastlight. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/nearform/lastlight/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/nearform/lastlight

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/nearform/lastlight/claude-md/github.svg)](https://agentmods.dev/instructions/nearform/lastlight/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/nearform/lastlight/claude-md"><img src="https://agentmods.dev/badge/instructions/nearform/lastlight/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/nearform/lastlight/claude-md"><img src="https://agentmods.dev/badge/instructions/nearform/lastlight/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 2,378 This file is loaded in full into every session.

When invoked 2,378 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.02378	$0.02378
Opus 5.5	$0.00951	$0.00951
Sonnet 5.5	$0.00476	$0.00476
Haiku 4.5	$0.00238	$0.00238

Measured 2mo ago against content hash 16a2b8625cc6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

lastlight CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 144 lines

How it starts

The opening of the file, as written. The whole thing — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Last Light — monorepo orientation

This is the nearform/lastlight monorepo: a pnpm + Turborepo workspace holding the Last Light GitHub-maintenance agent, its CLI, its docs site, and its eval harness. It was consolidated from three sibling repos (lastlight, lastlight-www, lastlight-evals) — see docs/plans/monorepo-migration/ for the migration plan and locked decisions.

The full day-to-day dev guide lives in apps/server/CLAUDE.md (with lastlight-core). Read that for runtime, architecture, commands, env vars, and deployment. Use this file only to find your way around the workspace; each package has its own CLAUDE.md for local detail.

Workspace map

lastlight/                     # repo root — private orchestration package (lastlight-monorepo)
├── pnpm-workspace.yaml  turbo.json  tsconfig.base.json  pnpm-lock.yaml  .nvmrc (22)
├── instance/                  # deployment overlay — gitignored, host-only (present on prod hosts, never in the tree)
├── docs/                      # cross-cutting docs (migration plan, RELEASING.md)
├── .github/workflows/         # ci / publish / deploy-www / deploy-evals
├── apps/
│   ├── server/                # lastlight-core — the harness + server + Docker stack + ./evals barrel
│   │   ├── CLAUDE.md          # ← the full dev guide
│   │   ├── src/ config/ workflows/ skills/ agent-context/ deploy/ spec/ sandbox/ tests/
│   │   ├── Dockerfile  sandbox*.Dockerfile  docker-compose.yml  docker-bake.hcl
│   │   └── dashboard/         # @lastlight/dashboard — admin SPA (nested, private; CLAUDE.md)
│   ├── www/                   # lastlight-www (Astro) → lastlight.dev (private; CLAUDE.md)
│   └── evals/                 # lastlight-evals → evals.lastlight.dev (its own CLAUDE.md)
│       └── dashboard/         # @lastlight/evals-dashboard — nested, private (CLAUDE.md)
└── packages/                  # each package has its own CLAUDE.md
    ├── cli/                   # published "lastlight" — the lean global bin + host-local server cmds
    ├── code-facts/            # published "lastlight-code-facts" — deterministic PR analysis (bin: lastlight-facts)
    ├── shared/                # lastlight-shared — light modules used by cli + core
    ├── workflow-engine/       # lastlight-workflow-engine — core/ ports/ test-support/
    └── agentic-pi/            # published "agentic-pi" — the coding-agent harness core runs in the sandbox

Read the full file on GitHub · 144 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 144 lines · 2,378 tokens per session scan A 16a2b8625cc6

Subscribe to this mod's changes

lastlight CLAUDE.md is an instructions file published in the GitHub repository nearform/lastlight (45 stars, last pushed today), licensed MIT. It adds 2,378 tokens to every session, about $0.0095 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

agent ai coding harness

lastlight CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
lastlight CLAUDE.mdnearform/lastlight	Instructions file	45	today	MIT	A	2,378	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	275k	3d ago	MIT	A	4,313	Codex, OpenCode

lastlight: Instructions file for Claude Code