{
  "schema": "varexis-public-evidence-record/0.3",
  "generated_at_utc": "2026-10-30T12:29:00.575278+00:00",
  "record_id": "VXI-EXT-ICE08-LANGFUSE-MASK-HOOK-NONATTRIBUTE-EXCLUSIONS-01-v1",
  "record_kind": "external_reference",
  "title": "Can mask_otel_spans redact every field of a Langfuse span",
  "system": "Langfuse",
  "evidence_family": "vendor_evidence_review",
  "index_status": "PUBLIC_SAFE_SOURCE_REVIEW",
  "evidence_state": "PRIMARY_DOCUMENTATION_REVIEW_ONLY",
  "canonical_question": "Can mask_otel_spans redact every field of a Langfuse span?",
  "near_questions": [
    "Can the masking hook remove sensitive span names?",
    "Are events and links editable through mask_otel_spans?",
    "Which span fields remain outside the hook?",
    "Does a configured masking callback establish whole-span sanitization?"
  ],
  "supported_claims": [
    {
      "claim": "The hook can change span attributes but not names, identifiers, parent relationships, resource attributes, events, links or instrumentation scope. Its configured presence is not whole-span sanitization.",
      "reliance": "DOCUMENTED_CAPABILITY_ONLY"
    }
  ],
  "not_demonstrated_claims": [
    "Keep sensitive information out of excluded fields and inspect their separate handling.",
    "Buyer implementation, live runtime enforcement, settled payment, verified deletion or certification are not established.",
    "No expanded capabilities or licences for existing INDEX executables."
  ],
  "public_summary": "The hook can change span attributes but not names, identifiers, parent relationships, resource attributes, events, links or instrumentation scope. Its configured presence is not whole-span sanitization.",
  "related_record_ids": [],
  "source_review": {
    "source_type": "official_external_documentation",
    "source_title": "Masking - Langfuse",
    "source_url": "https://langfuse.com/docs/observability/features/masking",
    "checked_on": "2026-10-30",
    "candidate_record_id": "VXI-EXT-ICE08-LANGFUSE-MASK-HOOK-NONATTRIBUTE-EXCLUSIONS-01-v1",
    "candidate_record_sha256": "b105095e1ee137c7c99a7218c7fcafbec0e86570d549ff6a72983501fd1e2e7a",
    "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 hook can change span attributes but not names, identifiers, parent relationships, resource attributes, events, links or instrumentation scope. Its configured presence is not whole-span sanitization.",
    "required_buyer_context": "attribute patches; span names; resource attributes; events and links; export policy. 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": "2026-10-30",
    "claim_to_check": "Can mask_otel_spans redact every field of a Langfuse span?",
    "documented_statement": {
      "status": "documented",
      "statement": "The hook can change span attributes but not names, identifiers, parent relationships, resource attributes, events, links or instrumentation scope. Its configured presence is not whole-span sanitization.",
      "source_ids": [
        "langfuse-mask"
      ]
    },
    "review_inference": {
      "status": "review_inference",
      "statement": "Can mask_otel_spans redact every field of a Langfuse span? Use the stated boundary to identify missing scope, source or outcome evidence before closing the review. Maskable field scope differs from data discarded by size limits. This is an operational review inference, not an observed deployment outcome.",
      "source_ids": [
        "langfuse-mask"
      ]
    },
    "buyer_evidence_required": [
      "attribute patches",
      "span names",
      "resource attributes",
      "events and links",
      "export policy"
    ],
    "review_condition": {
      "status": "varexis_review_policy",
      "statement": "Keep sensitive information out of excluded fields and inspect their separate handling."
    },
    "unknowns": "The buyer implementation, effective authority, source-data completeness and actual business outcomes were not inspected.",
    "unknown_finding": {
      "status": "unknown",
      "statement": "No buyer deployment or transaction was observed."
    },
    "evidence_sources": [
      {
        "source_id": "langfuse-mask",
        "url": "https://langfuse.com/docs/observability/features/masking",
        "final_url": "https://langfuse.com/docs/observability/features/masking",
        "captured_at_utc": "2026-10-30T12:14:29.391652+00:00",
        "status": 200,
        "content_type": "text/html; charset=utf-8",
        "bytes": 553779,
        "sha256": "f615b11a5cb869bb534649dc24253548d4b8361d7e8e7ae355fa23a84283cb32",
        "title": "Masking - Langfuse",
        "publisher": "Langfuse",
        "checked_on": "2026-10-30",
        "capture_status": 200,
        "claim_review_completed": true,
        "hash_basis": "SHA-256 of captured HTTP response-body bytes; not a signature or factual guarantee.",
        "version_context": "Official SDK/service documentation captured 2026-10-30. Rolling documentation, not a pinned implementation release; recheck current version and configuration before reliance.",
        "rights_disposition": "Original bounded paraphrase with source attribution. Captured source body remains private; no source-body redistribution. Vendor documentation rights, code licences and marks are not transferred.",
        "reviewed_sections": [
          "mask_otel_spans",
          "MaskOtelSpansResult",
          "Legacy"
        ]
      }
    ],
    "observed_deployment": false,
    "commercial_reliance_boundary": "Documentation supports only the stated boundary. Existing licensed checkers analyse supported supplied declarations locally; they do not inspect provider accounts, verify live behaviour, enforce decisions or certify compliance.",
    "paid_value": {
      "decision_context": "Can mask_otel_spans redact every field of a Langfuse span? Use the stated boundary to identify missing scope, source or outcome evidence before closing the review.",
      "free": "Complete source review, questions, provenance and limitations; free to read and save locally.",
      "single_request": "Unavailable for this publication-only record; historical saved retrieval is unchanged.",
      "evidence_receipt": "Unavailable for this publication-only record; no paid retrieval entitlement is added.",
      "excluded": [
        "Fresh source research",
        "Native provider integration or schema support",
        "Live inspection or runtime enforcement",
        "Payment settlement or verified deletion",
        "Certification or expanded licences"
      ],
      "integrity": "Hashes identify content versions; they do not prove factual truth or provide a signature."
    },
    "revalidation": {
      "trigger": "Recheck current primary documentation and the applicable API, service, account and configuration before reliance. No ongoing monitoring is included.",
      "specific_watch": "mask_otel_spans"
    },
    "buyer_relevance": "Can mask_otel_spans redact every field of a Langfuse span? Use the stated boundary to identify missing scope, source or outcome evidence before closing the review.",
    "refusal_conditions": [
      "Keep sensitive information out of excluded fields and inspect their separate handling.",
      "Do not infer deployment conformance, authority or successful outcomes from source documentation."
    ],
    "decision_context": {
      "operator": "Agent platform operator or cost reviewer",
      "scenario": "Can mask_otel_spans redact every field of a Langfuse span?",
      "consequence": "Use the stated boundary to identify missing scope, source or outcome evidence before closing the review.",
      "confidence": "High for captured documentation; applicability and deployed behaviour unverified."
    },
    "novelty_review": {
      "candidate_id": "ICE08-045",
      "disposition": "EXTENSION",
      "nearest_record_id": "VXI-EXT-PROCUREMENT-OTEL-SPAN-CONTENT-LIMITS-01-v1",
      "nearest_record_url": "/varexis-index/records/otel-span-limits-discarded-events-and-links.json",
      "nearest_record_sha256": "ed1c5db36ede1175ed94fb1e6f210558939935f8be7413f910cdd0d244561567",
      "material_distinction": "Maskable field scope differs from data discarded by size limits.",
      "review_status": "PASS: implementing-agent source and duplication review"
    },
    "optional_selection": {
      "guide_id": "agent-run-cost-trace-evidence",
      "guide_url": "/index-guides/agent-run-cost-trace-evidence",
      "guide_manifest": "/varexis-index/decision-guides.json",
      "checker": {
        "product_id": "agent-audit-coverage",
        "price_gbp_excluding_vat": 79,
        "purchase_url": "/index-access?route=agentic_pack_audit_coverage_v1",
        "licence_scope": "Existing separate internal-use licence; subscriptions do not include the executable.",
        "benefit": "Optional local analysis of supported supplied declarations only; no native provider integration or verification is added."
      },
      "boundary": "Optional Audit Coverage only reconciles supported supplied event-chain declarations. It does not connect to these providers, calculate model charges, verify live permissions, export traces or enforce budgets."
    },
    "exact_access": {
      "endpoint": "/mcp/catalogue",
      "tool": "get_publication_record",
      "arguments": {
        "record_id": "VXI-EXT-ICE08-LANGFUSE-MASK-HOOK-NONATTRIBUTE-EXCLUSIONS-01-v1"
      },
      "record_url": "/varexis-index/records/langfuse-mask-hook-nonattribute-exclusions.json",
      "original_mcp_search": false,
      "paid_saved_retrieval": false
    }
  },
  "niche": {
    "niche_id": "ice08-audit",
    "label": "Audit, Provenance & Evidence Accountability",
    "classification_id": "audit",
    "classification_label": "Audit, Provenance & Evidence Accountability",
    "topic_id": "audit",
    "buyer_intent": "Can mask_otel_spans redact every field of a Langfuse span? Use the stated boundary to identify missing scope, source or outcome evidence before closing the review.",
    "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#langfuse-mask-hook-nonattribute-exclusions",
  "machine_readable_record": "/varexis-index/records/langfuse-mask-hook-nonattribute-exclusions.json"
}
