Borrowing it
Nothing to install: this file belongs to NeoDrew/chromeflow. 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/NeoDrew/chromeflow/main/CLAUDE.mdgit clone --depth 1 https://github.com/NeoDrew/chromeflowWrote 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/neodrew/chromeflow/claude-md)<a href="https://agentmods.dev/instructions/neodrew/chromeflow/claude-md"><img src="https://agentmods.dev/badge/instructions/neodrew/chromeflow/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/neodrew/chromeflow/claude-md"><img src="https://agentmods.dev/badge/instructions/neodrew/chromeflow/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 | $0.03157 | $0.03157 |
| Opus 5.5 | $0.01263 | $0.01263 |
| Sonnet 5.5 | $0.00631 | $0.00631 |
| Haiku 4.5 | $0.00316 | $0.00316 |
Grade A, and why
chromeflow 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 5d 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.
How it starts
The opening of the file, as written. The whole thing — 249 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Chromeflow — repo-developer guide
This file is for developers working ON chromeflow. The usage reference for
agents (Claude Code, Codex, etc.) lives in
packages/plugin/skills/chromeflow/ (and skills-codex/chromeflow/ for
the Codex variant). When in doubt, the canonical user-facing docs are in
the skill, not here.
What chromeflow is
Chromeflow is a Chrome extension + MCP server pair that lets coding
agents drive the user's real Chrome browser. The extension attaches via
CDP; the MCP server exposes 30 tools (click_element, fill_input,
type_text, get_page_text, etc.) over the standard Model Context
Protocol. Agents call those tools; the extension performs the operations
in the user's logged-in Chrome window.
The core differentiator is the click + keystroke pipeline: a humanlike
CDP bezier sequence with pointerType: "mouse" (firing PointerEvent
isPrimary=true alongside MouseEvent), settle-hover micro-tremor,
post-click jitter, and isTrusted=true keystrokes. This is what defeats
anti-bot checks on Reddit, X / Twitter, and similar isTrusted-strict
React UIs.
Repository layout
packages/
extension/ # Chrome MV3 extension (TypeScript)
src/
background.ts # MCP message dispatcher entry point, ~330 lines
background/ # CDP helpers, click/type dispatch, policy, state
content/ # Content-script handlers (shadow-piercing DOM ops)
offscreen.ts # Persistent WebSocket connection to MCP server
popup/ # Browser-action popup UI
stealth.ts # MAIN-world stealth shims (WebRTC, etc.)
build.mjs # esbuild
pack.mjs # Zip the dist/ for Chrome Web Store
manifest.json
mcp-server/ # MCP server bundled to packages/plugin/server/
src/
index.ts # Tool registration entry
ws-bridge.ts # WebSocket server (extension <-> MCP)
tools/ # Tool definitions per family
types.ts # Message types between MCP and extension
package.json # Published to npm as "chromeflow"
plugin/ # Claude Code / Codex plugin manifest + skill
.claude-plugin/
plugin.json
skills/chromeflow/
SKILL.md # User-facing routing + common patterns
references/ # Topic-specific deep references
skills-codex/chromeflow/
SKILL.md # Codex variant
references/ # Same references, copied
server/
chromeflow.mjs # Bundled MCP server (esbuild output)
scripts/
build-server.sh # Bundle script
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.
- 5d ago Changed · -22 lines · -375 tokens per session bd4948e4f6b1
- 1mo ago Changed · -213 lines · -4,686 tokens per session b9b62e6fd361
- 2mo ago First seen · 484 lines · 8,218 tokens per session scan A 584542ca1fe3
chromeflow CLAUDE.md is an instructions file published in the GitHub repository NeoDrew/chromeflow (3 stars, last pushed 5d ago), licensed MIT. It adds 3,157 tokens to every session, about $0.0126 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 2026-08-31.
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).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.