rrweb-stack: Instructions file for Claude Code

CLAUDE.md

rrweb-stack CLAUDE.md is an instructions file for Claude Code from Cubenest/rrweb-stack. It costs 765 tokens per session, scanned C, original, Apache-2.0.

Repository instructions for rrweb-stack, a monorepo containing two Astro documentation websites. They explain how to deploy those sites to Vercel, a cloud hosting service.

In plain words
What is it for?
Use them when working on the docs sites or publishing them to Vercel from the repository root.
Why use it?
They prevent deployments from failing because shared workspace packages are missing. They also keep the two documentation sites pointed at the correct build settings and projects.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code; mentions AGENTS.md.

This is Cubenest/rrweb-stack's own configuration. It tells Claude Code how to work on rrweb-stack itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything rrweb-stack configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Cubenest/rrweb-stack. 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/Cubenest/rrweb-stack/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/Cubenest/rrweb-stack

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.

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README.md
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Your own site
<a href="https://agentmods.dev/instructions/cubenest/rrweb-stack/claude-md"><img src="https://agentmods.dev/badge/instructions/cubenest/rrweb-stack/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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/cubenest/rrweb-stack/claude-md"><img src="https://agentmods.dev/badge/instructions/cubenest/rrweb-stack/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 765 This file is loaded in full into every session.
When invoked 765 The same file — it is already loaded in full.
Security scan C 1 finding. 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00765 $0.00765
Opus 5.5 $0.00306 $0.00306
Sonnet 5.5 $0.00153 $0.00153
Haiku 4.5 $0.00076 $0.00076

Measured 1mo ago against content hash 32963fbc3994, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

rrweb-stack CLAUDE.md scanned grade C with 1 finding 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 1mo 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.

Hidden instructionshighPrompt injection

Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.

<!-- The canonical agent-instruction doc for this repo is AGENTS.md — edit there, not here. This file exists only because Claude Code reads CLAUDE.md (not AGENTS.md); the import below loads the same context so both surfa
CLAUDE.md · 73 lines

How it starts

The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.

@AGENTS.md

Claude Code

Deploying the docs sites

Both Astro docs sites (apps/peek-docs → peek.cubenest.in, apps/tracelane-docs → tracelane.cubenest.in) are deployed to Vercel via CLI. Deploy from the monorepo root — deploying from the app subdirectory only uploads that directory and leaves workspace deps (@cubenest/docs-shared, @peekdev/todomvc-demo) unresolvable on Vercel's build server.

Procedure:

  1. Create a temporary vercel.json at the repo root (gitignored):

    // peek-docs
    {
      "installCommand": "pnpm install --frozen-lockfile",
      "buildCommand": "pnpm --filter peek-docs... run build",
      "outputDirectory": "apps/peek-docs/dist"
    }
    
  2. Deploy with the project's env vars:

    VERCEL_PROJECT_ID=prj_wbLWp8utBFQXFpIxNC10i5ty5DNo \
    VERCEL_ORG_ID=team_ZKvGQO7dXxGBLl1iJ4vXWwnD \
    vercel --prod
    
  3. Swap vercel.json for tracelane-docs and repeat:

    {
      "installCommand": "pnpm install --frozen-lockfile",
      "buildCommand": "pnpm --filter tracelane-docs... run build",
      "outputDirectory": "apps/tracelane-docs/dist"
    }
    
    VERCEL_PROJECT_ID=prj_4Lnsk0ODEw2gXUzPPpiz1an8gqzt \
    VERCEL_ORG_ID=team_ZKvGQO7dXxGBLl1iJ4vXWwnD \
    vercel --prod
    
  4. Delete vercel.json and .vercel/ from the repo root when done.

Why: the cd ../.. && pnpm install install command in each app's .vercel/project.json was designed for Vercel Git integration (which clones the full repo). CLI deploys from a subdirectory upload only that directory, so the monorepo root is unreachable. Deploying from the root with VERCEL_PROJECT_ID uploads everything (≈15 MB) and pnpm --filter runs the build with correct PATH for cross-env and astro.

Read the full file on GitHub · 73 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.

  1. 1mo ago First seen · 73 lines · 765 tokens per session scan C 32963fbc3994

Subscribe to this mod's changes

rrweb-stack CLAUDE.md is an instructions file published in the GitHub repository Cubenest/rrweb-stack (8 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 765 tokens to every session, about $0.0031 per session on Opus 5.5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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