aileron-playwright-cli-connect

aileron-playwright-cli-connect is a skill for Claude Code, Codex from aileron-platform/aileron. It costs 83 tokens per session (323 once invoked), scanned A, original, Apache-2.0.

Instructions for connecting Playwright CLI, a command-line browser automation tool, to the workspace's running Chromium browser through CDP. CDP is the browser protocol that allows another tool to control and inspect it.

In plain words
What is it for?
Use it before running Playwright CLI commands that need the workspace browser, especially when connecting through CDP or troubleshooting browser reachability.
Why use it?
It removes guesswork when setting up browser automation in the workspace. It ensures the CLI uses the platform-provided browser connection rather than an assumed address.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it before running Playwright CLI commands that need the workspace browser, especially when connecting through CDP or troubleshooting browser reachability.

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Install with agentmods
npx agentmods add skills/aileron-platform/aileron/aileron-playwright-cli-connect
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add aileron-platform/aileron --skill aileron-playwright-cli-connect
Clone the repo
git clone --depth 1 https://github.com/aileron-platform/aileron

Made for: Claude Code, Codex.

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.

agentmods badge for aileron-playwright-cli-connect

README.md
[![agentmods](https://agentmods.dev/badge/skills/aileron-platform/aileron/aileron-playwright-cli-connect/github.svg)](https://agentmods.dev/skills/aileron-platform/aileron/aileron-playwright-cli-connect)
Your own site
<a href="https://agentmods.dev/skills/aileron-platform/aileron/aileron-playwright-cli-connect"><img src="https://agentmods.dev/badge/skills/aileron-platform/aileron/aileron-playwright-cli-connect/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.

agentmods 80×15 button for aileron-playwright-cli-connect

Your own site · 80×15
<a href="https://agentmods.dev/skills/aileron-platform/aileron/aileron-playwright-cli-connect"><img src="https://agentmods.dev/badge/skills/aileron-platform/aileron/aileron-playwright-cli-connect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 83 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 323 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 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 $0.00083 $0.00323
Opus 5 $0.00042 $0.00161
Sonnet 5 $0.00017 $0.00065
Haiku 4.5 $0.00008 $0.00032

Measured 8d ago against content hash 5df5deecd47e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

aileron-playwright-cli-connect scanned grade A 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 8d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s "$AILERON_BROWSER_CDP_URL/json/version"
workspace-runtime/agent-defaults/skills/aileron-playwright-cli-connect/SKILL.md · 42 lines

What it actually says

Connecting playwright-cli to workspace-browser

This skill covers establishing a CDP connection between playwright-cli and the Chromium browser in workspace-browser.

How to Connect

The browser service name is platform-owned. Read the canonical injected values instead of deriving it.

playwright-cli attach --cdp="$AILERON_BROWSER_CDP_URL"

Use the required canonical CDP URL directly:

playwright-cli attach --cdp="$AILERON_BROWSER_CDP_URL"

Verify Reachability

Before connecting, you can confirm the CDP endpoint is reachable:

curl -s "$AILERON_BROWSER_CDP_URL/json/version"

Environment Variables

  • AILERON_BROWSER_CDP_URL: Required. Full internal CDP URL injected by the platform.

Troubleshooting

  1. Check AILERON_BROWSER_CDP_URL.
  2. Confirm workspace-browser is running and healthy.
  3. Confirm port 9223 is reachable from workspace-runtime.
  4. Retry the attach --cdp command with AILERON_BROWSER_CDP_URL.
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. 8d ago First seen · 42 lines · 83 tokens per session scan A 5df5deecd47e

Subscribe to this mod's changes

aileron-playwright-cli-connect is a skill published in the GitHub repository aileron-platform/aileron (11 stars, last pushed 16d ago), licensed Apache-2.0. It adds 83 tokens to every session and 323 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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