browser

browser is a skill for Claude Code, Codex from mattmre/EVOKORE-MCP-PUBLIC. It costs 30 tokens per session (1,681 once invoked), scanned A, original, MIT.

A browser-automation tool for interacting with websites, collecting information from pages, and testing web interfaces.

In plain words
What is it for?
Running end-to-end tests, scraping rendered pages, completing flows such as logins or checkouts, and capturing screenshots or PDFs.
Why use it?
It helps automate multi-step browser work and pages whose content appears only after JavaScript runs, while keeping separate sessions isolated.

Skill for Claude CodeCodex

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

Good fit Running end-to-end tests, scraping rendered pages, completing flows such as logins or checkouts, and capturing screenshots or PDFs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mattmre/evokore-mcp-public/browser
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 mattmre/EVOKORE-MCP-PUBLIC --skill browser
Clone the repo
git clone --depth 1 https://github.com/mattmre/EVOKORE-MCP-PUBLIC

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 browser

README.md
[![agentmods](https://agentmods.dev/badge/skills/mattmre/evokore-mcp-public/browser/github.svg)](https://agentmods.dev/skills/mattmre/evokore-mcp-public/browser)
Your own site
<a href="https://agentmods.dev/skills/mattmre/evokore-mcp-public/browser"><img src="https://agentmods.dev/badge/skills/mattmre/evokore-mcp-public/browser/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 browser

Your own site · 80×15
<a href="https://agentmods.dev/skills/mattmre/evokore-mcp-public/browser"><img src="https://agentmods.dev/badge/skills/mattmre/evokore-mcp-public/browser.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,681 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 $0.00030 $0.01681
Opus 5 $0.00015 $0.00840
Sonnet 5 $0.00006 $0.00336
Haiku 4.5 $0.00003 $0.00168

Measured 10d ago against content hash 96b4f686afce, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

browser 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 10d 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.

If the task is a single unauthenticated HTTP GET, prefer a plain `fetch`/`curl`-style tool instead of launching a browser.
SKILLS/EVOKORE EXTENSIONS/browser/SKILL.md · 171 lines

How it starts

The opening of the file, as written. The whole thing — 171 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Browser Automation Skill

AI-optimized browser automation using abbreviated element refs (93% context reduction vs verbose XPath/CSS selectors) and isolated multi-session contexts for parallel, side-effect-free flows.

Trigger

Use this skill when:

  • Automating multi-step web UI flows (login, checkout, dashboard drilldowns)
  • Scraping structured content from JS-rendered pages
  • Running E2E UI tests against a deployed or local web app
  • Orchestrating multiple browser tabs or parallel sessions (A/B flows, multi-account checks)
  • Capturing screenshots, PDFs, or intercepting network requests as part of a verification pipeline

If the task is a single unauthenticated HTTP GET, prefer a plain fetch/curl-style tool instead of launching a browser.

Abbreviated Ref System

Verbose selectors dominate browser-automation context windows. Each document.querySelector('button[data-testid="submit-btn"]') burns tokens on every reference. Abbreviated refs replace these with short stable IDs assigned at snapshot time.

How It Works

At session or page snapshot, the browser tool enumerates interactive elements and returns a mapping table:

Ref Role Label / Text Selector (internal)
#b1 button "Submit" button[data-testid="submit-btn"]
#b2 button "Cancel" button.cancel-btn
#i1 input "Email" input[name="email"]
#i2 input "Password" input[name="password"]
#a1 link "Forgot password" a[href="/reset"]

The agent then operates in abbreviated-ref space:

click #b1
fill #i1 "[email protected]"
fill #i2 "hunter2"
click #b1

Under the hood, the tool resolves #b1 → real selector and executes. This trades ~100-byte selectors for 3-char refs — a 93% context reduction on typical flows.

Read the full file on GitHub · 171 lines

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. 10d ago First seen · 171 lines · 30 tokens per session scan A 96b4f686afce

Subscribe to this mod's changes

browser is a skill published in the GitHub repository mattmre/EVOKORE-MCP-PUBLIC (3 stars, last pushed 3mo ago), licensed MIT. It adds 30 tokens to every session and 1,681 once invoked, about $0.0002 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 2026-08-31.

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