{
  "schema": "varexis-public-evidence-record/0.3",
  "generated_at_utc": "2026-10-16T07:59:18.009Z",
  "record_id": "VXI-EXT-PROCUREMENT-S3-ENDPOINT-01-v1",
  "record_kind": "external_reference",
  "title": "S3 private paths: Endpoint existence and enforced restriction",
  "system": "Amazon S3",
  "evidence_family": "vendor_evidence_review",
  "index_status": "PUBLIC_SAFE_SOURCE_REVIEW",
  "evidence_state": "PRIMARY_DOCUMENTATION_REVIEW_ONLY",
  "canonical_question": "Does creating an S3 VPC endpoint prove the bucket can only be reached through it?",
  "near_questions": [
    "Does endpoint creation restrict the S3 bucket policy?",
    "Which endpoint ID does the policy reference?",
    "Is an explicit deny present?",
    "Can the console be blocked by the restriction?",
    "What happens if the VPC identifier is wrong?",
    "Does a VPC condition cover multiple endpoints?",
    "Which principals still have bucket permissions?",
    "How are service access paths handled?",
    "What evidence confirms the intended network path?",
    "Is there an authorized recovery path for lockout?",
    "When should an agent avoid changing the policy automatically?",
    "Can I retain the private-access review?"
  ],
  "supported_claims": [
    {
      "claim": "The documented restriction uses a bucket policy tied to a VPC or endpoint condition. Endpoint existence is not that policy evidence. An explicit deny can also block console access and cause lockout if the identifier is wrong, so the effective policy and intended alternate access require review.",
      "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 documented restriction uses a bucket policy tied to a VPC or endpoint condition. Endpoint existence is not that policy evidence. An explicit deny can also block console access and cause lockout if the identifier is wrong, so the effective policy and intended alternate access require review.",
  "related_record_ids": [],
  "source_review": {
    "source_type": "official_external_documentation",
    "source_title": "S3 bucket policies and VPC endpoints",
    "source_url": "https://docs.aws.amazon.com/AmazonS3/latest/userguide/example-bucket-policies-vpc-endpoint.html",
    "checked_on": "2026-10-16",
    "candidate_record_id": "VXI-EXT-PROCUREMENT-S3-ENDPOINT-01-v1",
    "candidate_record_sha256": "9892576466db436cc0276e9d9b4921a6d3ce38e7b5a42aca96622d034b3ba4ea",
    "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 documented restriction uses a bucket policy tied to a VPC or endpoint condition. Endpoint existence is not that policy evidence. An explicit deny can also block console access and cause lockout if the identifier is wrong, so the effective policy and intended alternate access require review.",
    "required_buyer_context": "Bucket policy, endpoint identity, callers and alternate access. Effective buyer configuration and dated operational evidence are required.",
    "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.",
  "decision_profile": {
    "schema": "varexis-vendor-evidence-review/1",
    "review_status": "documentation_review_only",
    "checked_on": "2026-10-16",
    "claim_to_check": "An S3 endpoint automatically restricts every bucket access path.",
    "documented_statement": {
      "status": "documented",
      "statement": "The documented restriction uses a bucket policy tied to a VPC or endpoint condition. Endpoint existence is not that policy evidence. An explicit deny can also block console access and cause lockout if the identifier is wrong, so the effective policy and intended alternate access require review.",
      "source_ids": [
        "s3-endpoint"
      ]
    },
    "buyer_evidence_required": [
      "Bucket policy and referenced endpoint/VPC.",
      "Identity permissions and alternate access paths.",
      "Authorized validation and recovery access plan."
    ],
    "review_condition": {
      "status": "varexis_review_policy",
      "statement": "Require the enforcing policy before claiming private-path-only access."
    },
    "unknowns": "The buyer configuration, contract, effective entitlement and operational evidence have not been inspected. Missing evidence does not establish absence or failure of the feature.",
    "evidence_sources": [
      {
        "source_id": "s3-endpoint",
        "url": "https://docs.aws.amazon.com/AmazonS3/latest/userguide/example-bucket-policies-vpc-endpoint.html",
        "final_url": "https://docs.aws.amazon.com/AmazonS3/latest/userguide/example-bucket-policies-vpc-endpoint.html",
        "title": "S3 bucket policies and VPC endpoints",
        "checked_on": "2026-10-16",
        "sha256": "dbbee8560021cd7b5e3ddc96dd7f215e01824ac7f7e9af3efcc5576446bb6846",
        "bytes": 25285
      }
    ],
    "observed_deployment": false,
    "commercial_reliance_boundary": "Procurement evidence support only; no supplier clearance, legal conclusion, configuration audit or verification of the buyer's claim is supplied.",
    "paid_value": {
      "decision_context": "Save the policy and access-path evidence behind a private-storage claim.",
      "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": "A saved purchase does not recheck the source or buyer configuration.",
      "specific_watch": "Bucket policy, endpoint identity, callers and alternate access"
    }
  },
  "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#s3-vpc-endpoint-bucket-policy-evidence",
  "machine_readable_record": "/varexis-index/records/s3-vpc-endpoint-bucket-policy-evidence.json"
}