{
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  "record_id": "VXI-EXT-PROCUREMENT-CLOUDEVENTS-WEBHOOK-HANDSHAKE-NOT-AUTHENTICATION-01-v1",
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  "title": "CloudEvents subscription consent and authentication",
  "system": "CloudEvents v1.0.2",
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  "index_status": "PUBLIC_SAFE_SOURCE_REVIEW",
  "evidence_state": "PRIMARY_DOCUMENTATION_REVIEW_ONLY",
  "canonical_question": "Does the CloudEvents webhook OPTIONS handshake authenticate the sender or authorise its business action?",
  "near_questions": [
    "Does a CloudEvents webhook validation response authenticate the event source?",
    "What does the CloudEvents OPTIONS abuse-protection handshake establish?",
    "Is notification consent the same as authorisation to perform an action?",
    "Which access-control evidence is needed after CloudEvents subscription validation?"
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    {
      "claim": "The 1.0.2 Web Hooks specification describes the validation handshake as abuse protection: the destination agrees to receive notifications so a sender cannot be directed at an unsuspecting endpoint. It explicitly does not establish authentication or authorisation context. The separate delivery access-control model must be assessed independently of that subscription consent.",
      "reliance": "DOCUMENTED_CAPABILITY_ONLY"
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  "public_summary": "The 1.0.2 Web Hooks specification describes the validation handshake as abuse protection: the destination agrees to receive notifications so a sender cannot be directed at an unsuspecting endpoint. It explicitly does not establish authentication or authorisation context. The separate delivery access-control model must be assessed independently of that subscription consent.",
  "related_record_ids": [],
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    "source_title": "CloudEvents v1.0.2 — http-webhook",
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    "required_buyer_context": "Validation request and destination response; Delivery authentication and access-control policy; Actor authority and intended action scope. Buyer deployment not inspected.",
    "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",
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    "claim_to_check": "Does the CloudEvents webhook OPTIONS handshake authenticate the sender or authorise its business action?",
    "documented_statement": {
      "status": "documented",
      "statement": "The 1.0.2 Web Hooks specification describes the validation handshake as abuse protection: the destination agrees to receive notifications so a sender cannot be directed at an unsuspecting endpoint. It explicitly does not establish authentication or authorisation context. The separate delivery access-control model must be assessed independently of that subscription consent.",
      "source_ids": [
        "ce-webhook"
      ]
    },
    "review_inference": {
      "status": "review_inference",
      "statement": "Distinguish notification consent from authenticated delivery and business authority. This is a review judgment, not an observed execution or deployment result.",
      "source_ids": [
        "ce-webhook"
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    },
    "buyer_evidence_required": [
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      "Delivery authentication and access-control policy",
      "Actor authority and intended action scope"
    ],
    "review_condition": {
      "status": "varexis_review_policy",
      "statement": "Refuse authenticated-sender or business-authority conclusions from handshake success."
    },
    "unknowns": "Actual credential validation and action permission were not inspected.",
    "unknown_finding": {
      "status": "unknown",
      "statement": "Actual credential validation and action permission were not inspected."
    },
    "evidence_sources": [
      {
        "source_id": "ce-webhook",
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        "final_url": "https://raw.githubusercontent.com/cloudevents/spec/fc1f6f31f5f011a72183f1bcea20c987cb683ade/cloudevents/http-webhook.md",
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        "sha256": "86a5f5787e88a2642cf8613579baa2835c00e5732064f53827842253e4338178",
        "bytes": 15432,
        "title": "CloudEvents v1.0.2 — http-webhook",
        "hash_basis": "Decoded HTTP response body bytes",
        "rights_review": "Original bounded paraphrase; source bodies are captured privately and not redistributed. Repository Apache-2.0 licence reviewed.",
        "checked_on": "2026-10-24",
        "capture_status": 200,
        "claim_review_completed": true,
        "reviewed_sections": [
          "Delivery response",
          "Abuse Protection; Authorization",
          "2.2 Delivery response: 3xx prohibition",
          "2.2 Delivery response: retired target 410",
          "2.2 Delivery response: 429 and Retry-After"
        ],
        "version_context": "CloudEvents v1.0.2; extension status must be checked individually; pinned cloudevents/spec revision fc1f6f31f5f011a72183f1bcea20c987cb683ade. Source documentation is not independent evidence of buyer deployment behaviour."
      }
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    "observed_deployment": false,
    "commercial_reliance_boundary": "Documentation review only; the buyer must establish applicability and actual outcomes. INDEX does not inspect or control the deployment.",
    "paid_value": {
      "decision_context": "Distinguish notification consent from authenticated delivery and business authority.",
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      "excluded": [
        "Fresh vendor research",
        "Continuous monitoring or change alerts",
        "Testing the buyer configuration",
        "Private evidence or vendor certification"
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      "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": "Recheck the pinned source, deployed version, selection policy and retained operation results before relying on a current outcome."
    },
    "buyer_relevance": "Distinguish notification consent from authenticated delivery and business authority.",
    "refusal_conditions": [
      "Refuse authenticated-sender or business-authority conclusions from handshake success."
    ]
  },
  "niche": {
    "niche_id": "agent-authority-action-evidence",
    "label": "Agent Authority & Action Evidence",
    "classification_id": "audit",
    "classification_label": "Audit, Provenance & Evidence Accountability",
    "topic_id": "audit",
    "buyer_intent": "Distinguish notification consent from authenticated delivery and business authority.",
    "comparison_role": "supplementary_discovery"
  },
  "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.",
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    "request_workflow": "/varexis-index/request-workflow.json",
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    "checkout_url": "/index-access"
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  "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#cloudevents-webhook-handshake-not-authentication",
  "machine_readable_record": "/varexis-index/records/cloudevents-webhook-handshake-not-authentication.json"
}