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.
npx agentmods add skills/jshearin01/agent-skills/chrome-developernpx skills add jshearin01/agent-skills --skill chrome-developergit clone --depth 1 https://github.com/jshearin01/agent-skillsWrote 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/skills/jshearin01/agent-skills/chrome-developer)<a href="https://agentmods.dev/skills/jshearin01/agent-skills/chrome-developer"><img src="https://agentmods.dev/badge/skills/jshearin01/agent-skills/chrome-developer.svg" alt="Measured on agentmods" 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 | $0.00294 | $0.10160 |
| Opus 5 | $0.00147 | $0.05080 |
| Sonnet 5 | $0.00059 | $0.02032 |
| Haiku 4.5 | $0.00029 | $0.01016 |
Grade A, and why
chrome-developer 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 4d 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.
const imageBlob = await fetch(imageUrl).then(r => r.blob()); The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
12 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/chrome-builtin-ai.md 20 KB
- references/chrome-extensions-mv3.md 19 KB
- references/hf-webgpu-models.md 23 KB
- references/indexeddb-advanced.md 20 KB
- references/webgpu-webnn-webassembly.md 21 KB
- scripts/extension-boilerplate/background.js 8.3 KB runs code
- scripts/extension-boilerplate/content.js 3.3 KB runs code
- scripts/extension-boilerplate/manifest.json 1.1 KB
- scripts/hf-webgpu-inference.js 19 KB runs code
- scripts/indexeddb-patterns.js 23 KB runs code
- scripts/local-inference-demo.js 16 KB runs code
- scripts/webgpu-compute-demo.js 14 KB runs code
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.
- 4d ago First seen · 1,136 lines · 294 tokens per session scan A 3a584f53fc6e
chrome-developer is a skill published in the GitHub repository jshearin01/agent-skills (16 stars, last pushed 3mo ago), with no licence file. It adds 294 tokens to every session and 10,160 once invoked, about $0.0015 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.
Other skills, from other repositories
use-agent-browser-for-airi
Test AIRI display-model imports with agent-browser across stage-tamagotchi Electron, stage-web, and stage-pocket mobile web layouts. Use when uploading and verifying contributor-supplied Live2D ZIP, VRM, or MMD ZIP/PMX/PMD files through AIRI's model selector, including onboarding bypass, format-specific import…
opencli-sitemap-author
Use when creating or maintaining OpenCLI site sitemaps: agent-facing navigation, page-state, action, workflow, API-reference, pitfall, and fallback knowledge for a website. Use after browser exploration discovers durable site context, when a sitemap is stale, or when promoting local site knowledge into the repo.
interactive-login
How to complete browser/interactive logins (aws / gh / glab / gcloud). The platform backgrounds the login poller so it survives the human's browser round-trip — and when that does NOT work.
pinchtab-mcp
Use this skill when a task requires browser automation through PinchTab's MCP server connected to a remote browser instance. Covers navigation, element interaction, data extraction, form filling, multi-step flows, and session management via MCP tools.
web-browser
Automate and interact with web pages through Chrome or Chromium using the Chrome DevTools Protocol (CDP): navigate, click, fill forms, inspect content, take screenshots, and debug console or network activity. Use when an agent needs a real browser. Prefer headless Chrome unless visible browser interaction is required.
traceway-setup
Analyze and instrument repositories for Traceway observability. Use when the user wants to plan, add, migrate, or verify Traceway or OpenTelemetry monitoring for backend, browser, full-stack, mobile or iOS, or AI-agent software, including project topology and user-approved setup-plan creation. Backends use OTLP/HTTP…