core

core is a skill for Claude Code from friday-platform/friday-studio. It costs 112 tokens per session (3,680 once invoked), scanned A, original, no licence file.

A usage guide for agent-browser, a tool for navigating websites, interacting with page controls, reading content, taking screenshots, and handling forms.

In plain words
What is it for?
Use it when an agent needs to open pages, click, fill fields, select options, extract data, manage tabs, or work with authentication.
Why use it?
It explains the required way to inspect a page and refer to elements before performing browser actions.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it when an agent needs to open pages, click, fill fields, select options, extract data, manage tabs, or work with authentication.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/friday-platform/friday-studio/skill
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 friday-platform/friday-studio --skill skill
Clone the repo
git clone --depth 1 https://github.com/friday-platform/friday-studio

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.

agentmods badge for core

README.md
[![agentmods](https://agentmods.dev/badge/skills/friday-platform/friday-studio/skill/github.svg)](https://agentmods.dev/skills/friday-platform/friday-studio/skill)
Your own site
<a href="https://agentmods.dev/skills/friday-platform/friday-studio/skill"><img src="https://agentmods.dev/badge/skills/friday-platform/friday-studio/skill/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 core

Your own site · 80×15
<a href="https://agentmods.dev/skills/friday-platform/friday-studio/skill"><img src="https://agentmods.dev/badge/skills/friday-platform/friday-studio/skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 112 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,680 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00112 $0.03680
Opus 5.5 $0.00045 $0.01472
Sonnet 5.5 $0.00022 $0.00736
Haiku 4.5 $0.00011 $0.00368

Measured 1mo ago against content hash d7cc9dff343c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

core 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 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.

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.

packages/bundled-agents/src/web/skill/SKILL.md · 446 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

8 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.

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 · 446 lines · 112 tokens per session scan A d7cc9dff343c

Subscribe to this mod's changes

core is a skill published in the GitHub repository friday-platform/friday-studio (104 stars, last pushed 1mo ago), with no licence file. It adds 112 tokens to every session and 3,680 once invoked, about $0.0004 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.

Related

Other skills, from other repositories

agent-e2e-test-specialist

Specialist subagent: Playwright, Cypress, and visual regression testing specialist. Use only when the user explicitly asks for E2E tests, browser test automation, or visual regression testing. Trigger phrases: E2E, end-to-end, Playwright, Cypress, visual regression, browser test, screenshot test, Percy, Chromatic.

travisjneuman/.claude · 76 tokens

agent-browser-extension-developer

Specialist subagent: Chrome, Firefox, and cross-browser extension development specialist. Manifest V3, service workers, content scripts, and WebExtension APIs. Use when building browser extensions or migrating from MV2 to MV3. Trigger phrases: browser extension, Chrome extension, Firefox addon, Manifest V3, MV3…

travisjneuman/.claude · 79 tokens

firecrawl

Scrape, search, crawl, map, parse, or interact with web pages via the firecrawl-cli binary, writing results to disk instead of streaming them into context. Actions: scrape, search, crawl, map, parse, interact, agent, monitor, developer, research, doctor, search-feedback, credit-usage. Use when: 'scrape this page'…

melodic-software/claude-code-plugins · 161 tokens

chrome-browser

Read this skill before the first step that uses Claude in Chrome, the browser extension whose tools are named mcpclaude-in-chrome (also called Chrome, the browser extension, or the external browser) and which acts in the person's real Chrome with their own sign-ins; before those tools are turned on there may be a…

travisjneuman/.claude · 176 tokens

built-in-browser

Read this skill before the first step that uses the built-in browser, the browser pane inside the Claude desktop app (also called the in-app browser, the browser pane, Claude's browser, or "your own browser"), whose tools are named mcpClaudeBrowser when the session runs in the desktop app and…

travisjneuman/.claude · 192 tokens

engineering-advanced-skills

Index of 37 advanced engineering agent skills for Claude Code, Codex, Gemini CLI, Cursor, OpenClaw. Use when browsing or choosing among the POWERFUL-tier engineering skills: agent design, RAG, MCP servers, CI/CD, database design, observability, security auditing, changelog/release automation, reliability…

sinhoneyy/master-skills · 84 tokens