{ "schema": "varexis-index-free-publication-preview/1", "catalogue_version": "ice-11-tranche-71-v1", "route_id": "agentic_reviewed_langgraph_subgraph_replay_checkpoint_granularity", "record_id": "VXI-EXT-ICE11-LANGGRAPH-SUBGRAPH-REPLAY-CHECKPOINT-GRANULARITY-01-v1", "question": "Can a parent LangGraph checkpoint replay only the second approval inside a default subgraph?", "answer": "The time-travel guide treats a default subgraph as one parent-level super-step. Replaying from before it runs the subgraph from the start; its own checkpointer provides internal checkpoint history for finer replay selection.", "records": [ { "record_id": "VXI-EXT-ICE11-LANGGRAPH-SUBGRAPH-REPLAY-CHECKPOINT-GRANULARITY-01-v1", "url": "/varexis-index/records/langgraph-subgraph-replay-checkpoint-granularity.json", "content_sha256": "c84aca6c70b3f673488278ab7c8be3a89f6eb2a9f6a1c6c27554f77a7ba213dd", "evidence": { "schema": "varexis-public-evidence-record/0.3", "generated_at_utc": "2026-10-31T00:34:56.659823+00:00", "record_id": "VXI-EXT-ICE11-LANGGRAPH-SUBGRAPH-REPLAY-CHECKPOINT-GRANULARITY-01-v1", "record_kind": "external_reference", "title": "LangGraph: Subgraph replay needs the right checkpoint scope", "system": "LangChain", "evidence_family": "vendor_evidence_review", "index_status": "PUBLIC_SAFE_SOURCE_REVIEW", "evidence_state": "PRIMARY_DOCUMENTATION_REVIEW_ONLY", "canonical_question": "Can a parent LangGraph checkpoint replay only the second approval inside a default subgraph?", "near_questions": [ "Does a parent checkpoint expose every subgraph approval boundary?", "When does time travel rerun an entire subgraph?", "What enables replay between two child nodes?", "Can a nested approval be replayed independently by default?" ], "supported_claims": [ { "claim": "The time-travel guide treats a default subgraph as one parent-level super-step. Replaying from before it runs the subgraph from the start; its own checkpointer provides internal checkpoint history for finer replay selection.", "reliance": "DOCUMENTED_CAPABILITY_ONLY" } ], "not_demonstrated_claims": [ "Do not promise selective replay of one internal approval without a matching subgraph checkpoint. Identify the replay scope and separately reconcile any repeated external actions.", "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 time-travel guide treats a default subgraph as one parent-level super-step. Replaying from before it runs the subgraph from the start; its own checkpointer provides internal checkpoint history for finer replay selection.", "related_record_ids": [], "source_review": { "source_type": "official_external_documentation", "source_title": "LangGraph time travel", "source_url": "https://docs.langchain.com/oss/python/langgraph/use-time-travel.md", "checked_on": "2026-10-31", "candidate_record_id": "VXI-EXT-ICE11-LANGGRAPH-SUBGRAPH-REPLAY-CHECKPOINT-GRANULARITY-01-v1", "candidate_record_sha256": "3cfd2ae9de5c75d8fed346a15243a7e94c513c8078056ec11565e8b628817c55", "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 time-travel guide treats a default subgraph as one parent-level super-step. Replaying from before it runs the subgraph from the start; its own checkpointer provides internal checkpoint history for finer replay selection.", "required_buyer_context": "parent and child checkpoint configuration; selected checkpoint namespace; internal approval sequence; external effect references. 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", "applicability_status": "Rolling primary documentation captured 2026-10-31; installed SDK/service configuration not inspected.", "checked_on": "2026-10-31", "claim_to_check": "Can a parent LangGraph checkpoint replay only the second approval inside a default subgraph?", "documented_statement": { "status": "documented", "statement": "The time-travel guide treats a default subgraph as one parent-level super-step. Replaying from before it runs the subgraph from the start; its own checkpointer provides internal checkpoint history for finer replay selection.", "source_ids": [ "lg-time-travel" ] }, "review_inference": { "status": "review_inference", "statement": "Do not promise selective replay of one internal approval without a matching subgraph checkpoint. Identify the replay scope and separately reconcile any repeated external actions. Intentional replay granularity inside a nested graph differs from pending-write retention during ordinary parallel-node failure recovery. Operational review inference; no deployment outcome was observed.", "source_ids": [ "lg-time-travel" ] }, "buyer_evidence_required": [ "parent and child checkpoint configuration", "selected checkpoint namespace", "internal approval sequence", "external effect references" ], "review_condition": { "status": "varexis_review_policy", "statement": "Do not promise selective replay of one internal approval without a matching subgraph checkpoint. Identify the replay scope and separately reconcile any repeated external actions." }, "unknowns": "Buyer implementation, installed versions, effective authority, source completeness and actual business outcomes were not inspected.", "unknown_finding": { "status": "unknown", "statement": "No buyer deployment or transaction was observed." }, "evidence_sources": [ { "source_id": "lg-time-travel", "url": "https://docs.langchain.com/oss/python/langgraph/use-time-travel.md", "final_url": "https://docs.langchain.com/oss/python/langgraph/use-time-travel.md", "captured_at_utc": "2026-10-31T00:25:56.871489+00:00", "status": 200, "content_type": "text/markdown; charset=utf-8", "bytes": 12885, "sha256": "56cea55cfa011f3a4afbe6c28aa93339416e2cccf3ad16d2b22b10c78952b84a", "title": "LangGraph time travel", "publisher": "LangChain", "checked_on": "2026-10-31", "capture_status": "captured_primary_documentation", "claim_review_completed": true, "hash_basis": "Raw HTTP response bytes retained privately; not deployment attestation.", "version_context": "Rolling primary documentation captured 2026-10-31; installed SDK/service configuration not inspected.", "rights_disposition": "Original bounded paraphrase with source attribution. Full source capture remains private; no vendor documentation, examples or implementation is redistributed.", "reviewed_sections": [ "Fork", "From a specific node", "Subgraphs", "Inherited checkpointer" ] } ], "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": "Do not promise selective replay of one internal approval without a matching subgraph checkpoint. Identify the replay scope and separately reconcile any repeated external actions.", "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 applicable SDK, service and configuration before reliance. No ongoing monitoring is included.", "specific_watch": "Subgraphs; Inherited checkpointer" }, "buyer_relevance": "Do not promise selective replay of one internal approval without a matching subgraph checkpoint. Identify the replay scope and separately reconcile any repeated external actions.", "refusal_conditions": [ "Do not promise selective replay of one internal approval without a matching subgraph checkpoint. Identify the replay scope and separately reconcile any repeated external actions.", "Do not infer deployment conformance, authority or successful outcomes from source documentation." ], "decision_context": { "operator": "Developer or reviewer assessing agent execution and evidence", "scenario": "Can a parent LangGraph checkpoint replay only the second approval inside a default subgraph?", "consequence": "Do not promise selective replay of one internal approval without a matching subgraph checkpoint. Identify the replay scope and separately reconcile any repeated external actions.", "confidence": "Primary-documentation support only; buyer demand and deployment outcomes unestablished." }, "novelty_review": { "candidate_id": "ICE11-07", "disposition": "new_distinct", "nearest_record_id": "VXI-EXT-PROCUREMENT-LANGGRAPH-PENDING-WRITES-PARALLEL-FAILURE-RECOVERY-01-v1", "nearest_record_url": "/varexis-index/records/langgraph-pending-writes-parallel-failure-recovery.json", "nearest_record_sha256": "0d87225d95047e7886aadb30fe63945e778f86035b6d0cb53241677951526ac7", "material_distinction": "Intentional replay granularity inside a nested graph differs from pending-write retention during ordinary parallel-node failure recovery.", "review_status": "Primary-source review and full adjacent-record comparison; no independent challenge claimed." }, "optional_selection": { "guide_id": "workflow-completion-recovery", "guide_url": "/index-guides/workflow-completion-recovery", "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 audit declarations only; no native LangGraph, Mem0 or MCP integration is added." }, "boundary": "This free record supports an evidence-selection decision. The existing checker does not diagnose these platforms, extract their logs or prove the documented condition occurred." }, "exact_access": { "endpoint": "/mcp/catalogue", "tool": "get_publication_record", "arguments": { "record_id": "VXI-EXT-ICE11-LANGGRAPH-SUBGRAPH-REPLAY-CHECKPOINT-GRANULARITY-01-v1" }, "record_url": "/varexis-index/records/langgraph-subgraph-replay-checkpoint-granularity.json", "original_mcp_search": false, "paid_saved_retrieval": false } }, "niche": { "niche_id": "ice11-audit", "label": "Audit, Provenance & Evidence Accountability", "classification_id": "audit", "classification_label": "Audit, Provenance & Evidence Accountability", "topic_id": "audit", "buyer_intent": "Do not promise selective replay of one internal approval without a matching subgraph checkpoint. Identify the replay scope and separately reconcile any repeated external actions.", "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#langgraph-subgraph-replay-checkpoint-granularity", "machine_readable_record": "/varexis-index/records/langgraph-subgraph-replay-checkpoint-granularity.json" } } ], "access": { "mode": "exact_http_only", "payment_required": false, "purchase_url": null, "mcp_preview_available": false, "paid_saved_retrieval_available": false, "natural_language_search_qualified": false }, "boundary": "Catalogue additions are available free through the exact HTTP JSON links below. Enhanced natural-language discovery is not yet qualified for these records. They are outside MCP search, MCP preview and paid saved retrieval. No search qualification, executable capability or entitlement is added.", "content_sha256": "1ec3eb5a48ffc1348c3e55269eac33f383fc55d8d2274f2362ef51cf8a57759d" }