Borrowing it
Nothing to install: this file belongs to padamson/playwright-rust. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/padamson/playwright-rust/main/CLAUDE.mdgit clone --depth 1 https://github.com/padamson/playwright-rustWrote 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.
[](https://agentmods.dev/instructions/padamson/playwright-rust/claude-md)<a href="https://agentmods.dev/instructions/padamson/playwright-rust/claude-md"><img src="https://agentmods.dev/badge/instructions/padamson/playwright-rust/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.
<a href="https://agentmods.dev/instructions/padamson/playwright-rust/claude-md"><img src="https://agentmods.dev/badge/instructions/padamson/playwright-rust/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.04252 | $0.04252 |
| Opus 5.5 | $0.01701 | $0.01701 |
| Sonnet 5.5 | $0.00850 | $0.00850 |
| Haiku 4.5 | $0.00425 | $0.00425 |
Grade A, and why
playwright-rust 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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 333 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Guidance for Claude Code working in this repository.
Project
playwright-rust — Rust language bindings for Microsoft Playwright, following the same architecture as playwright-python / java / dotnet. JSON-RPC to the official Playwright server (we don't reimplement browser protocols). Goal: production-quality bindings, full Python API parity (achieved in v0.12.0), then v1.0 after multi-month dogfooding.
See WHY.md for vision, docs/roadmap.md for direction, and docs/implementation-plans/v1.0-gap-analysis.md for current state.
Repository Layout
crates/playwright/ single crate (consolidated from playwright-core in v0.7)
src/api/ launch options, connect options
src/protocol/ protocol objects (Page, Browser, Locator, ...)
src/server/ connection, transport, channel, object factory
src/assertions.rs expect API (auto-retry assertions)
src/error.rs error types
tests/integration/ integration tests
examples/ usage examples
fuzz/ cargo-fuzz targets
build.rs assembles the pinned driver (npm + Node, ADR 0006)
crates/playwright-rs-macros/ locator!() proc macro (published separately)
crates/playwright-rs-trace/ trace-zip parser (published separately)
crates/xtask/ repo tasks (verify-driver-version, verify-changelog-links,
site snippets); publish = false
crates/site/ playwright-rust.dev landing page (Leptos/WASM, built by Trunk)
crates/site-e2e/ dogfoods the bindings against that site; also the deploy gate
supply-chain/ cargo-vet audit config (see skill)
docs/ roadmap, ADRs, implementation plans, technical notes
docs/architecture/ LikeC4 model of every crate and module (generated)
docs/agent/ agent-integration guidance for downstream users
skills/ the skill we ship to downstream users
.claude/skills/ contributor-only skills, plus a symlink to the above
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.
- yesterday Changed · +2 lines · +37 tokens per session 018ff4d18329
- 9d ago Changed · +4 lines · +52 tokens per session 9dcd1572f1c6
- 17d ago Changed · +1 lines · +25 tokens per session f869000a0471
- 18d ago Changed · +1 lines · +10 tokens per session 48c6534a5b0d
- 24d ago Changed · +9 lines · +144 tokens per session d69fab8972f1
- 27d ago Changed · +1 lines · +22 tokens per session 7b335f5b2521
- 29d ago Changed · +13 lines · +216 tokens per session ba8912ea3fd7
- 1mo ago Changed · -3 lines · -48 tokens per session ced895ebf3c2
- 1mo ago Changed · +7 lines · +125 tokens per session 78c7c6c399d0
- 1mo ago First seen · 298 lines · 3,669 tokens per session scan A 5794d85713fc
playwright-rust CLAUDE.md is an instructions file published in the GitHub repository padamson/playwright-rust (163 stars, last pushed 2d ago), licensed Apache-2.0. It adds 4,252 tokens to every session, about $0.0170 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.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.