{
  "schema": "varexis-public-evidence-record/0.3",
  "generated_at_utc": "2026-10-24T21:35:02.243Z",
  "record_id": "VXI-EXT-PROCUREMENT-X402-A2A-PAYMENT-STATE-TASK-CORRELATION-01-v1",
  "record_kind": "external_reference",
  "title": "x402 A2A task and payment-state evidence",
  "system": "x402 Foundation",
  "evidence_family": "vendor_evidence_review",
  "index_status": "PUBLIC_SAFE_SOURCE_REVIEW",
  "evidence_state": "PRIMARY_DOCUMENTATION_REVIEW_ONLY",
  "canonical_question": "Does x402 A2A payment-submitted or payment-verified establish completed payment?",
  "near_questions": [
    "Which x402 A2A status indicates payment completion?",
    "Does payment-verified mean an A2A agent has been paid?",
    "What links an x402 payment payload to an A2A task?",
    "Where does the reviewed A2A payment transport report settlement?"
  ],
  "supported_claims": [
    {
      "claim": "The pinned A2A transport distinguishes submitted, verified and completed payment statuses. Payment payloads carry task correlation, and settlement results appear as receipts in task-status metadata. The submitted or verified labels are earlier states; they must not be treated as the completed settlement result.",
      "reliance": "DOCUMENTED_CAPABILITY_ONLY"
    }
  ],
  "not_demonstrated_claims": [
    "Independent verification of payment, delivery or deployed controls",
    "Actual task execution, payment and delivered artifact are unobserved.",
    "Buyer deployment testing, live runtime enforcement, certification or permission to act",
    "Expanded capabilities or licences for existing INDEX executables"
  ],
  "public_summary": "The pinned A2A transport distinguishes submitted, verified and completed payment statuses. Payment payloads carry task correlation, and settlement results appear as receipts in task-status metadata. The submitted or verified labels are earlier states; they must not be treated as the completed settlement result.",
  "related_record_ids": [],
  "source_review": {
    "source_type": "official_external_documentation",
    "source_title": "Transport: A2A (Agent-to-Agent Protocol)",
    "source_url": "https://raw.githubusercontent.com/x402-foundation/x402/4241d56cae2fb7ed06cd18e3a9ff2a3457b1ce54/specs/transports-v2/a2a.md",
    "checked_on": "2026-10-24",
    "candidate_record_id": "VXI-EXT-PROCUREMENT-X402-A2A-PAYMENT-STATE-TASK-CORRELATION-01-v1",
    "candidate_record_sha256": "6123082be0feedcf54cf195dcc044282d98404ec1c91342ecc02c6b31bbb0877",
    "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 pinned A2A transport distinguishes submitted, verified and completed payment statuses. Payment payloads carry task correlation, and settlement results appear as receipts in task-status metadata. The submitted or verified labels are earlier states; they must not be treated as the completed settlement result.",
    "required_buyer_context": "Task ID and submitted payment payload reference; Payment-status transition history; Settlement receipt metadata and matching resource. 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",
    "review_status": "documentation_review_only",
    "checked_on": "2026-10-24",
    "claim_to_check": "Does x402 A2A payment-submitted or payment-verified establish completed payment?",
    "documented_statement": {
      "status": "documented",
      "statement": "The pinned A2A transport distinguishes submitted, verified and completed payment statuses. Payment payloads carry task correlation, and settlement results appear as receipts in task-status metadata. The submitted or verified labels are earlier states; they must not be treated as the completed settlement result.",
      "source_ids": [
        "x402-a2a"
      ]
    },
    "review_inference": {
      "status": "review_inference",
      "statement": "Join the correct task to its payment result without collapsing intermediate states. This is a review decision, not an observed buyer result.",
      "source_ids": [
        "x402-a2a"
      ]
    },
    "buyer_evidence_required": [
      "Task ID and submitted payment payload reference",
      "Payment-status transition history",
      "Settlement receipt metadata and matching resource"
    ],
    "review_condition": {
      "status": "varexis_review_policy",
      "statement": "Do not classify submitted or verified task payment status as completed settlement."
    },
    "unknowns": "Actual task execution, payment and delivered artifact are unobserved.",
    "unknown_finding": {
      "status": "unknown",
      "statement": "Actual task execution, payment and delivered artifact are unobserved."
    },
    "evidence_sources": [
      {
        "source_id": "x402-a2a",
        "url": "https://raw.githubusercontent.com/x402-foundation/x402/4241d56cae2fb7ed06cd18e3a9ff2a3457b1ce54/specs/transports-v2/a2a.md",
        "final_url": "https://raw.githubusercontent.com/x402-foundation/x402/4241d56cae2fb7ed06cd18e3a9ff2a3457b1ce54/specs/transports-v2/a2a.md",
        "status": 200,
        "captured_at_utc": "2026-10-24T21:23:36.340Z",
        "sha256": "bbf078363a2fc4eeeb8f6e9b66cf36033f5acfc3984c0e8f427143368979d878",
        "bytes": 9701,
        "title": "Transport: A2A (Agent-to-Agent Protocol)",
        "hash_basis": "Decoded HTTP response body bytes",
        "rights_review": "Original factual paraphrase and source metadata only; Apache-2.0 repository captures retained privately and not redistributed.",
        "checked_on": "2026-10-24",
        "capture_status": 200,
        "claim_review_completed": true,
        "reviewed_sections": [
          "Payment Payload Transmission",
          "Settlement Response Delivery",
          "Payment Status Lifecycle"
        ],
        "version_context": "Pinned x402-foundation/x402 revision 4241d56cae2fb7ed06cd18e3a9ff2a3457b1ce54 captured 2026-10-24. Documentation revision, not evidence that any buyer deployment conforms."
      }
    ],
    "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": "Join the correct task to its payment result without collapsing intermediate states.",
      "free": "Complete review, sources, practical questions 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": "Recheck the pinned specification against the selected scheme, network, provider version and buyer evidence before relying on a current outcome."
    },
    "buyer_relevance": "Join the correct task to its payment result without collapsing intermediate states.",
    "refusal_conditions": [
      "Do not classify submitted or verified task payment status as completed settlement."
    ]
  },
  "niche": {
    "niche_id": "agent-authority-action-evidence",
    "label": "Agent Authority & Action Evidence",
    "classification_id": "payments",
    "classification_label": "Agent Payments, Authority & Transaction Evidence",
    "topic_id": "payments",
    "buyer_intent": "Join the correct task to its payment result without collapsing intermediate states.",
    "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.",
  "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#x402-a2a-payment-state-task-correlation",
  "machine_readable_record": "/varexis-index/records/x402-a2a-payment-state-task-correlation.json"
}