{ "schema": "varexis-public-evidence-record/0.3", "generated_at_utc": "2026-10-24T23:47:34.928Z", "record_id": "VXI-EXT-PROCUREMENT-SENSORTHINGS-TOP-PAGINATION-COMPLETENESS-01-v1", "record_kind": "external_reference", "title": "SensorThings pagination and complete exports", "system": "OGC SensorThings Sensing 1.1", "evidence_family": "vendor_evidence_review", "index_status": "PUBLIC_SAFE_SOURCE_REVIEW", "evidence_state": "PRIMARY_DOCUMENTATION_REVIEW_ONLY", "canonical_question": "Does a very large SensorThings $top request guarantee that all observations arrive in one response?", "near_questions": [ "Can SensorThings ignore a top value above its page limit?", "Why are SensorThings observations missing from a large top response?", "What evidence supports a complete SensorThings paged export?", "Does stable SensorThings paging imply an immutable snapshot?" ], "supported_claims": [ { "claim": "SensorThings Sensing 1.1 specifies that when $top exceeds the service pagination limit, the service discards that option and applies its own page limit. The API also defines next-page links. Buyers must inspect pagination and reconcile the intended result set; a large requested limit or stable ordering alone is not proof of a complete, immutable export.", "reliance": "DOCUMENTED_CAPABILITY_ONLY" } ], "not_demonstrated_claims": [ "Live page coverage and snapshot consistency were not established.", "No independently verified physical outcome, calibration, industrial safety, deletion or complete capture.", "Buyer deployment testing, live runtime enforcement, certification or permission to act", "Expanded capabilities or licences for existing INDEX executables" ], "public_summary": "SensorThings Sensing 1.1 specifies that when $top exceeds the service pagination limit, the service discards that option and applies its own page limit. The API also defines next-page links. Buyers must inspect pagination and reconcile the intended result set; a large requested limit or stable ordering alone is not proof of a complete, immutable export.", "related_record_ids": [], "source_review": { "source_type": "official_external_documentation", "source_title": "OGC SensorThings Part1 Sensing 1.1, published 2021-08-04 — 18-088.html", "source_url": "https://docs.ogc.org/is/18-088/18-088.html", "checked_on": "2026-10-24", "candidate_record_id": "VXI-EXT-PROCUREMENT-SENSORTHINGS-TOP-PAGINATION-COMPLETENESS-01-v1", "candidate_record_sha256": "27caf5212182ff35f94187d4891d6b8e32cbf911cf42bec063ffa0e04aca8137", "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": "SensorThings Sensing 1.1 specifies that when $top exceeds the service pagination limit, the service discards that option and applies its own page limit. The API also defines next-page links. Buyers must inspect pagination and reconcile the intended result set; a large requested limit or stable ordering alone is not proof of a complete, immutable export.", "required_buyer_context": "Requested filter and ordering; Page responses and next links; Expected coverage and concurrent-update 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": "2026-10-24", "claim_to_check": "Does a very large SensorThings $top request guarantee that all observations arrive in one response?", "documented_statement": { "status": "documented", "statement": "SensorThings Sensing 1.1 specifies that when $top exceeds the service pagination limit, the service discards that option and applies its own page limit. The API also defines next-page links. Buyers must inspect pagination and reconcile the intended result set; a large requested limit or stable ordering alone is not proof of a complete, immutable export.", "source_ids": [ "sensorthings-sensing" ] }, "review_inference": { "status": "review_inference", "statement": "Follow actual paging behaviour when accounting for exported observations. This is a review judgment, not a measured deployment result.", "source_ids": [ "sensorthings-sensing" ] }, "buyer_evidence_required": [ "Requested filter and ordering", "Page responses and next links", "Expected coverage and concurrent-update policy" ], "review_condition": { "status": "varexis_review_policy", "statement": "Refuse complete-export claims from one oversized top request." }, "unknowns": "Live page coverage and snapshot consistency were not established.", "unknown_finding": { "status": "unknown", "statement": "Live page coverage and snapshot consistency were not established." }, "evidence_sources": [ { "source_id": "sensorthings-sensing", "url": "https://docs.ogc.org/is/18-088/18-088.html", "final_url": "https://docs.ogc.org/is/18-088/18-088.html", "status": 200, "captured_at_utc": "2026-10-24T23:24:18.177Z", "sha256": "76d3bb035eabd6a690b93532ca94cc610dd868abe54d9988b07d24ec4cac25ae", "bytes": 1730821, "title": "OGC SensorThings Part1 Sensing 1.1, published 2021-08-04 — 18-088.html", "hash_basis": "SHA-256 of unmodified HTTP response body bytes", "rights_review": "Original bounded paraphrase; source bodies are captured privately and not redistributed. OGC published-document copyright and licence reviewed; no modified standard or endorsement is represented.", "checked_on": "2026-10-24", "capture_status": 200, "claim_review_completed": true, "reviewed_sections": [ "8.2.6 Observation properties; phenomenonTime", "8.2.6 Observation properties; resultTime", "8.2.2 Location; 8.2.6 Observation relations", "8.2.4 Datastream properties and relations", "10.4 entity deletion; Table 25 integrity constraints", "13.2.2 dataArray creation response", "12 MultiDatastream; requirement 42", "9.3.3.2 top; response pagination", "11 batch requests; 11.3 example batch response", "14 MQTT extension and serverSettings", "14.1 observation creation over MQTT", "7.7 security" ], "version_context": "OGC SensorThings Part1 Sensing 1.1, published 2021-08-04; fixed published document 18-088; linked Sensing 1.1 errata URL returned 404, so absence of errata is not established. Documentation is not evidence of buyer deployment behaviour." } ], "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": "Follow actual paging behaviour when accounting for exported observations.", "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 specification version, errata availability, deployed profile, clock policy and retained operation results before relying on a current outcome." }, "buyer_relevance": "Follow actual paging behaviour when accounting for exported observations.", "refusal_conditions": [ "Refuse complete-export claims from one oversized top request." ] }, "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": "Follow actual paging behaviour when accounting for exported observations.", "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#sensorthings-top-pagination-completeness", "machine_readable_record": "/varexis-index/records/sensorthings-top-pagination-completeness.json" }