{ "schema": "varexis-public-evidence-record/0.3", "generated_at_utc": "2026-10-16T02:40:06.177Z", "record_id": "VXI-EXT-TOOL-TRUST-CHROME-DEVTOOLS-01-v1", "record_kind": "external_reference", "title": "Chrome DevTools MCP: Browser state and optional data sharing", "system": "Chrome DevTools MCP", "evidence_family": "agent_tool_trust_review", "index_status": "PUBLIC_SAFE_SOURCE_REVIEW", "evidence_state": "PRIMARY_DOCUMENTATION_REVIEW_ONLY", "canonical_question": "What can a Chrome DevTools agent see or change in my browser session?", "near_questions": [ "Can a browser tool read my signed-in pages?", "Does Chrome DevTools MCP expose network responses?", "Can the agent execute code in a page?", "Can browser diagnostics write files locally?", "Are trace URLs sent to another service?", "Can I disable Chrome MCP usage statistics?", "Does a target URL check provide a full sandbox?", "How should untrusted page text be handled?", "Which browser profile should procurement identify?", "Does closing the client remove diagnostic files?", "What evidence supports isolating a browser session?", "Can I save the reviewed browser access boundaries?" ], "supported_claims": [ { "claim": "The publisher exposes browser inspection and automation, including page interaction and diagnostic capture. Browser content becomes available to the connected agent. Performance features can send trace URLs to the CrUX service, and usage statistics have a documented opt-out. Browser attachment is not a general security sandbox.", "reliance": "DOCUMENTED_CAPABILITY_ONLY" } ], "not_demonstrated_claims": [ "Verified buyer configuration or effective access rights", "Independent execution, completeness or security testing", "Vendor certification, legal compliance or guaranteed suitability" ], "public_summary": "The publisher exposes browser inspection and automation, including page interaction and diagnostic capture. Browser content becomes available to the connected agent. Performance features can send trace URLs to the CrUX service, and usage statistics have a documented opt-out. Browser attachment is not a general security sandbox.", "related_record_ids": [ "VXI-EXT-TOOL-TRUST-HF-01-v1", "VXI-EXT-TOOL-TRUST-JFROG-01-v1", "VXI-EXT-TOOL-TRUST-SONAR-01-v1" ], "source_review": { "source_type": "official_external_documentation", "source_title": "Chrome DevTools MCP browser and telemetry controls", "source_url": "https://github.com/ChromeDevTools/chrome-devtools-mcp", "checked_on": "2026-10-16", "candidate_record_id": "VXI-EXT-TOOL-TRUST-CHROME-DEVTOOLS-01-v1", "candidate_record_sha256": "119232af074e264a245bcba3224cbea2a602aa12d1d0ead8cba856cfef39dc6f", "method": "Primary documentation reviewed for the published bounded statement.", "deployment_tested_by_varexis": false, "revalidation": "The delivered snapshot preserves the review date shown. Recheck current primary documentation and deployment context before relying on present applicability; payment does not trigger fresh research." }, "answer_policy": { "classification": "DOCUMENTED_WITH_DEPLOYMENT_BOUNDARY", "bounded_answer": "The publisher exposes browser inspection and automation, including page interaction and diagnostic capture. Browser content becomes available to the connected agent. Performance features can send trace URLs to the CrUX service, and usage statistics have a documented opt-out. Browser attachment is not a general security sandbox.", "required_buyer_context": "Chrome profile, attached targets, local process rights, telemetry settings and client data handling.", "missing_evidence": "A broader claim needs evidence matching the intended use. Payment does not upgrade the evidence state." }, "private_boundary": "Raw logs, thresholds, private paths, source code, protected mechanisms and reconstruction-level details are excluded from public and paid delivery.", "trust_profile": { "schema": "varexis-agent-tool-trust/1", "identity": { "tool": "Chrome DevTools MCP", "variant": "Publisher local server attached to a Chrome browser instance" }, "review_status": "documentation_review_only", "checked_on": "2026-10-16", "version_scope": "Dated rolling documentation snapshot; no installed or hosted runtime version independently verified.", "plan_scope": "Buyer plan, entitlement and effective configuration are not verified.", "findings": [ { "field": "operator", "label": "Publisher and operator", "status": "documented", "statement": "Published by the Chrome DevTools team; the buyer runs the local server and browser.", "source_ids": [ "chrome", "chrome-security" ] }, { "field": "purpose", "label": "Purpose", "status": "documented", "statement": "Inspect, automate and diagnose a connected Chrome instance.", "source_ids": [ "chrome", "chrome-security" ] }, { "field": "reads", "label": "Read capability", "status": "documented", "statement": "Page contents, network information, screenshots and performance traces can be exposed.", "source_ids": [ "chrome", "chrome-security" ] }, { "field": "writes", "label": "Write capability", "status": "documented", "statement": "Page interaction, script execution and supported file outputs can change browser or local state.", "source_ids": [ "chrome", "chrome-security" ] }, { "field": "auth", "label": "Authentication", "status": "unknown", "statement": "The reviewed local setup attaches to Chrome; an independent identity boundary for the buyer setup is not established here.", "source_ids": [ "chrome", "chrome-security" ] }, { "field": "permissions", "label": "Permission surface", "status": "review_inference", "statement": "Attached browser targets and local process authority determine the practical reach.", "source_ids": [ "chrome", "chrome-security" ] }, { "field": "egress", "label": "Data leaving the environment", "status": "review_inference", "statement": "Browser results reach the agent; trace URL sharing and usage telemetry need separate review.", "source_ids": [ "chrome", "chrome-security" ] }, { "field": "failures", "label": "Failure modes to consider", "status": "review_inference", "statement": "Untrusted page text, accidental session exposure and retained diagnostic files require consideration.", "source_ids": [ "chrome", "chrome-security" ] }, { "field": "unknown", "label": "Unknowns and applicability", "status": "unknown", "statement": "The buyer browser profile, logged-in sessions, enabled telemetry and client handling are unknown.", "source_ids": [] }, { "field": "gate", "label": "Suggested refusal or clarification condition", "status": "varexis_review_policy", "statement": "Do not attach a privileged browsing session without authority for its contents and intended actions.", "source_ids": [] } ], "evidence_sources": [ { "source_id": "chrome", "url": "https://github.com/ChromeDevTools/chrome-devtools-mcp", "final_url": "https://github.com/ChromeDevTools/chrome-devtools-mcp", "title": "Chrome DevTools MCP browser and telemetry controls", "checked_on": "2026-10-16", "sha256": "b0b23f8d6ab998b1576f5a9380b4ef3fcc748991f0307332c96d1bad75523d68", "bytes": 382141 }, { "source_id": "chrome-security", "url": "https://github.com/ChromeDevTools/chrome-devtools-mcp/blob/main/SECURITY.md", "final_url": "https://github.com/ChromeDevTools/chrome-devtools-mcp/blob/main/SECURITY.md", "title": "Chrome DevTools MCP security boundaries", "checked_on": "2026-10-16", "sha256": "13dda845021ed876187679e02aa2f5f8d96d4671da9186b95c554e676bc7d76a", "bytes": 248745 } ], "observed_tool_execution": false, "policy_basis": "Suggested VAREXIS review gates; apply the buyer's authorized task and policy. These conditions do not execute or enforce controls.", "commercial_reliance_boundary": "A source-linked review aid, not a vendor certification, security clearance or deployment assessment. Unknown does not mean false or unsafe.", "paid_value": { "decision_context": "Retain the browser-session and data-recipient questions needed before authorising browser automation.", "free": "Complete review, practical questions, sources and limitations; may be saved locally.", "single_request": "Existing server-saved version-bound route snapshot for later authenticated retrieval.", "evidence_receipt": "The same snapshot plus the existing unsigned delivery receipt.", "excluded": [ "Fresh vendor research", "Continuous monitoring or change alerts", "Testing the buyer configuration", "Private evidence or vendor certification" ], "integrity": "Hashes identify content versions; they do not prove truth or provide a signature." }, "revalidation": { "trigger": "Recheck when permissions, deployment, authentication, source guidance or intended use changes; a purchase does not trigger revalidation.", "specific_watch": "Attachment modes, telemetry defaults, output storage and browser permissions." }, "change_history": [ { "version": 1, "date": "2026-10-16", "change": "Initial documentation review; no earlier vendor assessment claimed." } ] }, "paid_access_note": "The full published answer and boundaries are free. Paid access saves the selected route and source versions, with an unsigned receipt when purchased. Preview coverage before paying. Fresh research, bespoke assessment and protected evidence are excluded.", "service_route": { "request_guide": "/varexis-index/request.html", "request_workflow": "/varexis-index/request-workflow.json", "service_id": "single_request", "service_routes_url": "/varexis-index/service-routes.json", "payment_required": true, "availability_endpoint": "/api/index/capabilities", "operational_status": "AUTOMATIC_SERVICE_CAPABILITIES_GATED", "checkout_url": "/index-access" }, "authority_boundary": "VAREXIS-INDEX informs evidence reliance. It does not provide advice, certification, deployment authority, security assurance, production approval, or guarantee.", "human_page": "/varexis-index/catalog.html#chrome-devtools-browser-session-boundary", "machine_readable_record": "/varexis-index/records/chrome-devtools-browser-session-boundary.json" }