{ "schema": "varexis-index-free-publication-preview/1", "catalogue_version": "pub-1-tranche-51-v1", "route_id": "agentic_reviewed_x402_permit2_spender_recipient_binding", "record_id": "VXI-EXT-PROCUREMENT-X402-PERMIT2-SPENDER-RECIPIENT-BINDING-01-v1", "question": "Is the facilitator the signed spender in x402 exact Permit2 authorization?", "answer": "The reviewed EVM exact binding identifies the x402ExactPermit2Proxy as the signed spender, rather than the facilitator. Its witness binds the destination address. The setup separately requires token approval to Permit2, with ordinary or supported sponsored approval paths; these roles should not be collapsed into one recipient identity.", "records": [ { "record_id": "VXI-EXT-PROCUREMENT-X402-PERMIT2-SPENDER-RECIPIENT-BINDING-01-v1", "url": "/varexis-index/records/x402-permit2-spender-recipient-binding.json", "content_sha256": "fc4d971e2054af41e9902a4957e9d2d68444bc44885c60d135875979fdeda791", "evidence": { "schema": "varexis-public-evidence-record/0.3", "generated_at_utc": "2026-10-24T21:35:02.243Z", "record_id": "VXI-EXT-PROCUREMENT-X402-PERMIT2-SPENDER-RECIPIENT-BINDING-01-v1", "record_kind": "external_reference", "title": "x402 Permit2 spender and payee checks", "system": "x402 Foundation", "evidence_family": "vendor_evidence_review", "index_status": "PUBLIC_SAFE_SOURCE_REVIEW", "evidence_state": "PRIMARY_DOCUMENTATION_REVIEW_ONLY", "canonical_question": "Is the facilitator the signed spender in x402 exact Permit2 authorization?", "near_questions": [ "Who is the x402 exact Permit2 signed spender?", "Does approving Permit2 identify the payment recipient?", "How does x402 Permit2 bind the beneficiary?", "Are facilitator and proxy interchangeable in an x402 signature?" ], "supported_claims": [ { "claim": "The reviewed EVM exact binding identifies the x402ExactPermit2Proxy as the signed spender, rather than the facilitator. Its witness binds the destination address. The setup separately requires token approval to Permit2, with ordinary or supported sponsored approval paths; these roles should not be collapsed into one recipient identity.", "reliance": "DOCUMENTED_CAPABILITY_ONLY" } ], "not_demonstrated_claims": [ "Independent verification of payment, delivery or deployed controls", "Contract deployments, approval state and buyer wallet behaviour are not independently tested.", "Buyer deployment testing, live runtime enforcement, certification or permission to act", "Expanded capabilities or licences for existing INDEX executables" ], "public_summary": "The reviewed EVM exact binding identifies the x402ExactPermit2Proxy as the signed spender, rather than the facilitator. Its witness binds the destination address. The setup separately requires token approval to Permit2, with ordinary or supported sponsored approval paths; these roles should not be collapsed into one recipient identity.", "related_record_ids": [], "source_review": { "source_type": "official_external_documentation", "source_title": "Scheme: `exact` on `EVM`", "source_url": "https://raw.githubusercontent.com/x402-foundation/x402/4241d56cae2fb7ed06cd18e3a9ff2a3457b1ce54/specs/schemes/exact/scheme_exact_evm.md", "checked_on": "2026-10-24", "candidate_record_id": "VXI-EXT-PROCUREMENT-X402-PERMIT2-SPENDER-RECIPIENT-BINDING-01-v1", "candidate_record_sha256": "4ebb1b7cbc4a34e324b257255c08ee87ad3b1f4d182f1c9c2793258d4a24c793", "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 reviewed EVM exact binding identifies the x402ExactPermit2Proxy as the signed spender, rather than the facilitator. Its witness binds the destination address. The setup separately requires token approval to Permit2, with ordinary or supported sponsored approval paths; these roles should not be collapsed into one recipient identity.", "required_buyer_context": "Token approval target and allowance; Signed proxy spender and witness destination; Network-specific contract and payment requirement. 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": "Is the facilitator the signed spender in x402 exact Permit2 authorization?", "documented_statement": { "status": "documented", "statement": "The reviewed EVM exact binding identifies the x402ExactPermit2Proxy as the signed spender, rather than the facilitator. Its witness binds the destination address. The setup separately requires token approval to Permit2, with ordinary or supported sponsored approval paths; these roles should not be collapsed into one recipient identity.", "source_ids": [ "x402-evm" ] }, "review_inference": { "status": "review_inference", "statement": "Check the actual approval, spender and beneficiary before signing a machine-payment request. This is a review decision, not an observed buyer result.", "source_ids": [ "x402-evm" ] }, "buyer_evidence_required": [ "Token approval target and allowance", "Signed proxy spender and witness destination", "Network-specific contract and payment requirement" ], "review_condition": { "status": "varexis_review_policy", "statement": "Do not substitute the facilitator address for the specified signed spender or payee." }, "unknowns": "Contract deployments, approval state and buyer wallet behaviour are not independently tested.", "unknown_finding": { "status": "unknown", "statement": "Contract deployments, approval state and buyer wallet behaviour are not independently tested." }, "evidence_sources": [ { "source_id": "x402-evm", "url": "https://raw.githubusercontent.com/x402-foundation/x402/4241d56cae2fb7ed06cd18e3a9ff2a3457b1ce54/specs/schemes/exact/scheme_exact_evm.md", "final_url": "https://raw.githubusercontent.com/x402-foundation/x402/4241d56cae2fb7ed06cd18e3a9ff2a3457b1ce54/specs/schemes/exact/scheme_exact_evm.md", "status": 200, "captured_at_utc": "2026-10-24T21:23:34.241Z", "sha256": "186111e25a5bdd5be839635ba1c441885567de09b57bdd93f78e465ca3b8e792", "bytes": 21131, "title": "Scheme: `exact` on `EVM`", "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": [ "1. AssetTransferMethod: EIP-3009 — Phase 3: Settlement Logic", "2. AssetTransferMethod: Permit2 — Phase 4: Settlement Logic", "3. AssetTransferMethod: ERC-7710 — Verification Logic", "Security Considerations", "ERC-7710 Delegation Managers", "2. AssetTransferMethod: Permit2 — Phase 1: One-Time Gas Approval", "Phase 2: PAYMENT-SIGNATURE Header Payload" ], "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": "Check the actual approval, spender and beneficiary before signing a machine-payment request.", "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": "Check the actual approval, spender and beneficiary before signing a machine-payment request.", "refusal_conditions": [ "Do not substitute the facilitator address for the specified signed spender or payee." ] }, "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": "Check the actual approval, spender and beneficiary before signing a machine-payment request.", "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-permit2-spender-recipient-binding", "machine_readable_record": "/varexis-index/records/x402-permit2-spender-recipient-binding.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": "ad9f75b937f7a71d9935ba8a6e54100f5b880807bd19312edca7f530d17d7472" }