com.scriptmasterlabs/agent-browser
com.scriptmasterlabs/agent-browserscriptmasterlabs.comstreamable-httpv2.0.0Scanned
A real Chromium browser agents pay for per action in USDC via x402 — hosted MCP, free local stdio.
6 tools: 2 can delete or cancel things, 2 change things and 2 only read.
- Reads private data · 0
- Reads text others write · 5
- Can send data out · 1
- No findings
Anlyon alternative
4 of these tools change something. Run those as governed actions.
Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.
Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.
Import an OpenAPI spec →Tools
Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.
6 tools
Deletes or cancels 2Claude Code: deny
browser_actUse for: interacting with the page — click, fill, type, select, submit, press.Reads text others writeNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it destructive (destructiveHint: true).
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it Use for: interacting with the page — click, fill, type, select, submit, press. Returns the resulting page title, URL and text so you can verify the action landed. Don't use when: the target element is not on the current page — navigate or snapshot first. This tool can change remote state (it can submit forms).
Annotations the server declares
- readOnlyHint: false
- destructiveHint: true
- openWorldHint: true
browser_closeUse for: ending a session and freeing its browser.No findings
Why it is in this group
- The name "browser_close" says "close": a word for a change.
- The server marks it destructive (destructiveHint: true).
Description, as the server wrote it Use for: ending a session and freeing its browser. Sessions also expire automatically after 10 idle minutes. Free on every door — closing is never charged.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: true
- openWorldHint: false
Changes things 2Claude Code: ask
browser_extractUse for: pulling repeated elements (prices, titles, links) from the page a session is on, via a CSS selector, or the full page text when no selector is given.Reads text others writeNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it Use for: pulling repeated elements (prices, titles, links) from the page a session is on, via a CSS selector, or the full page text when no selector is given. Returns one string per matched element. Don't use when: the page has not been loaded yet — call browser_navigate first.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: true
Only reads 2Show 2 read-only tools
browser_screenshotUse for: visual verification — layout, images, charts, CAPTCHA presence, or evidence of page state.Reads text others writeNo findings
Why it is in this group
- The name "browser_screenshot" says "screenshot": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- untrusted-inputThe name "browser_screenshot" says "screenshot" and "browser": it reads web pages, which anyone can write.
Description, as the server wrote it Use for: visual verification — layout, images, charts, CAPTCHA presence, or evidence of page state. Returns a PNG image (JPEG if the PNG exceeds 2.5MB). Don't use when: you only need the page's content or structure — browser_extract and browser_snapshot are far cheaper in tokens.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: true
browser_snapshotUse for: understanding page structure cheaply and deterministically — returns the accessibility tree (roles, names, states) as compact YAML instead of pixels or raw HTML.Reads text others writeNo findings
Why it is in this group
- The name "browser_snapshot" says "snapshot": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- untrusted-inputThe name "browser_snapshot" says "snapshot" and "browser": it reads web pages, which anyone can write.
- untrusted-inputThe description's first sentence says "html": it reads web pages, which anyone can write.
Description, as the server wrote it Use for: understanding page structure cheaply and deterministically — returns the accessibility tree (roles, names, states) as compact YAML instead of pixels or raw HTML. This is the lowest-token way to decide what to click or fill next. Don't use when: you need visual layout or images — use browser_screenshot.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: true
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Exfil surface
Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.
No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data.
- Reads private data0
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write5
- Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
- Can send data out1
- Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.
Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.
Findings
Matches of fixed checks, with the text they matched.
No check matched anything in these tool definitions. That is not a safety guarantee.
History
Changes to its tool definitions and to its remote endpoint, newest first.
No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.
Install
Pinned to version 2.0.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http agent-browser https://agent-browser-r7d2.onrender.com/mcpclaude mcp add --transport http agent-browser https://agent-browser-r7d2.onrender.com/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__agent-browser__browser_snapshot",
"mcp__agent-browser__browser_screenshot"
],
"ask": [
"mcp__agent-browser__browser_navigate",
"mcp__agent-browser__browser_extract"
],
"deny": [
"mcp__agent-browser__browser_act",
"mcp__agent-browser__browser_close"
]
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as agent-browser. Review it before you use it.
Capability tags behind 5 rules
- mcp__agent-browser__browser_navigate untrusted-input, outbound
- mcp__agent-browser__browser_extract untrusted-input
- mcp__agent-browser__browser_snapshot untrusted-input
- mcp__agent-browser__browser_act untrusted-input
- mcp__agent-browser__browser_screenshot untrusted-input
Pin
Keep the decision: fail CI when the tools change, follow every change, or show a badge.
Pin in CI
Fail a build when the tools you reviewed are not the tools the server serves today.
curl -s "https://anlyon.dev/api/v1/servers/com.scriptmasterlabs/agent-browser/verify?hash=5e58b55811114b4a289c93851071ebe5eb64a8fe2d1fd499ea8ed4d182649c2d" | jq -e '.changed == false'Pinned hash 5e58b5581111, from Oct 26, 2026, 23:17 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/com.scriptmasterlabs/agent-browser/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/com.scriptmasterlabs/agent-browser)Source: MCP Registry · repository. Synced Oct 26, 2026, 23:17 UTC.