What is spectra-browser?

A browser-control skill for the SpectraBrowser MCP suite, using a Chrome extension to operate a live Chrome session. It includes profile discovery, chat scrolling, visual clicking, and tools for inspecting and reloading network activity.

It is for browser-based tasks such as clicking at screen coordinates, scrolling chats, finding Chrome profiles, and inspecting or reloading network activity.

It gives a coding agent a defined way to interact with a real browser and examine what happens during page requests. This can reduce the need for manual browser control and network inspection.

spectra-browser — Skill for Claude Code and Codex by virajverse

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 virajverse/spectra-browser-mcp --skill spectra-browser

Clone the repo

git clone --depth 1 https://github.com/virajverse/spectra-browser-mcp

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/virajverse/spectra-browser-mcp/spectra-browser/github.svg)](https://agentmods.dev/skills/virajverse/spectra-browser-mcp/spectra-browser)

Your own site

<a href="https://agentmods.dev/skills/virajverse/spectra-browser-mcp/spectra-browser"><img src="https://agentmods.dev/badge/skills/virajverse/spectra-browser-mcp/spectra-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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/virajverse/spectra-browser-mcp/spectra-browser"><img src="https://agentmods.dev/badge/skills/virajverse/spectra-browser-mcp/spectra-browser.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 104 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 7,153 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.

Model	Per session	Once invoked
Fable 5.1	$0.00104	$0.07153
Opus 5.5	$0.00042	$0.02861
Sonnet 5.5	$0.00021	$0.01431
Haiku 4.5	$0.00010	$0.00715

Measured 23d ago against content hash ede65a865f88, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

spectra-browser 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 23d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (save_image_with_date.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/spectra-browser/SKILL.md · 369 lines

The source is not reproduced here

No licence file

Read it on GitHub

Files

What ships with it

2 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.

23d ago Changed · +205 lines · +3 tokens per session ede65a865f88
1mo ago First seen · 164 lines · 101 tokens per session scan A e3f15727104a

Subscribe to this mod's changes

spectra-browser is a skill published in the GitHub repository virajverse/spectra-browser-mcp (0 stars, last pushed 23d ago), with no licence file. It adds 104 tokens to every session and 7,153 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 2026-09-11.

Browser automation Python ai-agent browser-automation chrome-extension mcp

spectra-browser next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
spectra-browservirajverse/spectra-browser-mcp	Skill	0	23d ago	none	A	104	Claude Code, Codex
browser-usebrowser-use/browser-use	Skill	120k	yesterday	MIT	A	57	Claude Code, Codex
x402browser-use/browser-use	Skill	120k	yesterday	MIT	A	175	Claude Code
remote-browserbrowser-use/browser-use	Skill	120k	yesterday	MIT	A	22	Claude Code
cloudbrowser-use/browser-use	Skill	120k	yesterday	MIT	A	177	Claude Code
agent-browser-clisleepinginsummer/agent-browser-cli	Skill	645	7d ago	MIT	A	32	Claude Code, Codex
aipex-browserAIPexStudio/AIPex	Skill	1.3k	2mo ago	MIT	A	61	Claude Code, Codex