stealth-agent-browser-mcp (ykshah1309/stealth-agent-browser-mcp) is an MCP server listed on the M8ven Trust Index. It scores 70 out of 100, grade C. It declares 13 tools. No publisher has claimed this listing.
An MCP server providing AI agents with a stealth Chromium browser that uses hybrid accessibility-object-model and set-of-mark vision for token-lean snapshots and reliable action via ref ids.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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ykshah1309
Source: Glama
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Install from
The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
When Vitest UI server is listening, arbitrary file can be read and executed
Vitest allows Remote Code Execution when accessing a malicious website while Vitest API server is listening
Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default
sharp inherited vulnerabilities in libvips: CVE-2026-33327, CVE-2026-33328, CVE-2026-35590, CVE-2026-35591
@mozilla/readability Denial of Service through Regex
LOG_LEVELinfo debug, warn, etc. Always writes to stderr.SAB_CAPTCHA_API_KEYProvider API key.SAB_CAPTCHA_PROVIDERnone capsolver \ twocaptcha \ none.SAB_DEFAULT_TIMEOUT_MS15000 Per-action timeout.SAB_HEADLESS"": "true",SAB_HUMAN_MOUSEtrue Bezier-path click with pre-click hesitation. Defeats Datadome trajectory analysis.SAB_LOCALESAB_MAX_ANNOTATED75 Max labelled boxes in hybrid mode.SAB_PROXY_PASSWORDSAB_PROXY_USERNAME / —SAB_PROXY_POOLResidential pool. Comma-separated URLs (http://u:p@host:port,...) or a JSON array of {server, username, password}.SAB_PROXY_ROTATIONper-restart per-session \ per-restart \ static.SAB_PROXY_SERVERSingle-proxy mode. e.g. http://host:portSAB_PROXY_STICKY_TEMPLATEUsername template for sticky-IP providers. ${sessionId} interpolates. Example: brd-customer-c1-zone-res-session-${sessionId}.SAB_PROXY_USERNAME/ SAB_PROXY_PASSWORD —SAB_STEALTH_LEVEL"": "patched"SAB_TIMEZONEAmerica/New_YorkSAB_USER_DATA_DIRPersistent profile directory (cookies build reputation).SAB_VIEWPORT_HSAB_VIEWPORT_W / 1366 / 768SAB_VIEWPORT_W/ SAB_VIEWPORT_H 1366 / 768Dependencies
14 dependencies, 1 flagged: rebrowser-playwright
Tool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
13/13 tools missing one or more hints — browser_navigate (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); browser_snapshot (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); browser_click (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +10 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tool test coverage
7/13 tools referenced in tests (54%)
Write tests that reference each tool by name so every tool has at least one test.
Shell command execution
1 child_process call — runs shell commands
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
Production dependencies are patched
0 critical, 2 high severity in production deps — @modelcontextprotocol/sdk@1.0.4 (high), sharp@0.33.5 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dev dependencies
2 critical/high in dev-only deps (does not ship to users)
Upgrade dev dependencies when convenient.
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