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handovers need a Day Pass ($0.99 for 24 hours, one payment) or Zambo Pass ($29 for 30 days). Nothing was published, and your work is saved.\",\"next_step\":\"POST https://zambo.dev/api/x402/day-pass with the signed PAYMENT-SIGNATURE (or X-Payment) envelope, then retry the same MCP call.\",\"next_url\":\"https://zambo.dev/api/x402/day-pass\"},\"no_wallet\":\"For human checkout, open human_url.\",\"human_url\":\"https://zambo.dev/day-pass/\",\"agent_payment\":{\"tool\":\"day_pass_activate\",\"step_1\":\"GET https://zambo.dev/api/x402/day-pass without payment to receive the live challenge\",\"amount_usdc\":\"0.99\",\"amount_atomic\":\"990000\",\"asset\":\"USDC\",\"network\":\"eip155:8453\",\"network_name\":\"Base\",\"step_2\":\"Sign the live challenge and retry the same call with PAYMENT-SIGNATURE (x402 v2; X-Payment is still accepted).\",\"autonomous_payment_policy\":\"Agents may pay the $0.99 USDC Day Pass (x402 on Base, 24 hours) directly. No human approval is required by Zambo. Your own wallet or spending policy still applies.\",\"activation\":\"24-hour access; never activates without a verified transfer\",\"endpoint\":\"https://zambo.dev/mcp\"},\"resource\":{\"url\":\"https://zambo.dev/api/x402/day-pass\",\"description\":\"Zambo Day Pass: $0.99 in Base USDC for 24-hour access to the Zambo MCP connection. Not per call - one payment covers 24 hours. Every call returns a verifiable receipt.\",\"mimeType\":\"application/json\"},\"payment_proof\":{\"header\":\"PAYMENT-SIGNATURE (X-Payment also accepted)\",\"destination\":\"https://zambo.dev/api/x402/day-pass\",\"encoding\":\"base64(JSON {x402Version:2,accepted:{scheme,network,asset,amount,payTo,maxTimeoutSeconds,extra},payload:{signature,authorization}})\",\"required\":true,\"accepted\":{\"scheme\":\"exact\",\"network\":\"eip155:8453\",\"asset\":\"0x8335…2913\",\"amount\":\"990000\",\"payTo\":\"0xb753…b9AC\",\"maxTimeoutSeconds\":900,\"extra\":{\"name\":\"USD Coin\",\"version\":\"2\",\"domain\":{\"name\":\"USD Coin\",\"version\":\"2\",\"chainId\":8453,\"verifyingContract\":\"0x8335…2913\"},\"types\":{\"TransferWithAuthorization\":[{\"name\":\"from\",\"type\":\"address\"},{\"name\":\"to\",\"type\":\"address\"},{\"name\":\"value\",\"type\":\"uint256\"},{\"name\":\"validAfter\",\"type\":\"uint256\"},{\"name\":\"validBefore\",\"type\":\"uint256\"},{\"name\":\"nonce\",\"type\":\"bytes32\"}]},\"primaryType\":\"TransferWithAuthorization\",\"message\":{\"from\":\"<payer_address>\",\"to\":\"0xb753…b9AC\",\"value\":\"990000\",\"validAfter\":\"<unix_seconds>\",\"validBefore\":\"<unix_seconds>\",\"nonce\":\"<bytes32_nonce>\"}}},\"retry_policy\":\"A refused invalid signature is retryable with a newly signed authorization. Never reuse a consumed nonce or a prior signature. Request a fresh challenge if expired.\"},\"autonomous_payment_policy\":\"Agents may pay the $0.99 USDC Day Pass (x402 on Base, 24 hours) directly. No human approval is required by Zambo. Your own wallet or spending policy still applies.\",\"next\":{\"mcp_url\":\"https://zambo.dev/mcp\",\"prompt\":\"Use Zambo to hand this over to your next AI. Include what you didn't check.\",\"setup\":\"https://zambo.dev/handover\"},\"unlocks\":\"24-hour access to the Zambo MCP connection, subject to product/provider allowances listed at https://zambo.dev/pricing\",\"on_success_returns\":[\"receipt_url\",\"run_id\",\"uuid\",\"access_key\",\"expires_at\",\"x402_spend_receipt\",\"settlement_tx_hash\"],\"accepts\":[{\"scheme\":\"exact\",\"network\":\"eip155:8453\",\"asset\":\"0x8335…2913\",\"amount\":\"990000\",\"payTo\":\"0xb753…b9AC\",\"maxTimeoutSeconds\":900,\"extra\":{\"name\":\"USD Coin\",\"version\":\"2\",\"domain\":{\"name\":\"USD Coin\",\"version\":\"2\",\"chainId\":8453,\"verifyingContract\":\"0x8335…2913\"},\"types\":{\"TransferWithAuthorization\":[{\"name\":\"from\",\"type\":\"address\"},{\"name\":\"to\",\"type\":\"address\"},{\"name\":\"value\",\"type\":\"uint256\"},{\"name\":\"validAfter\",\"type\":\"uint256\"},{\"name\":\"validBefore\",\"type\":\"uint256\"},{\"name\":\"nonce\",\"type\":\"bytes32\"}]},\"primaryType\":\"TransferWithAuthorization\",\"message\":{\"from\":\"<payer_address>\",\"to\":\"0xb753…b9AC\",\"value\":\"990000\",\"validAfter\":\"<unix_seconds>\",\"validBefore\":\"<unix_seconds>\",\"nonce\":\"<bytes32_nonce>\"}}}],\"next_url\":\"https://zambo.dev/api/x402/day-pass\",\"day_pass_url\":\"https://zambo.dev/day-pass/?source=wrap-up&job=[private]#checkout\",\"zambo_pass_url\":\"https://zambo.dev/zambo-pass/?source=private-handover\",\"status\":\"upgrade_required\",\"message\":\"Private handovers need a Day Pass ($0.99 for 24 hours, one payment) or Zambo Pass ($29 for 30 days). Nothing was published, and your work is saved.\",\"zambo_pass_annual_url\":\"https://zambo.dev/upgrade?tier=annual\",\"offer\":{\"text\":\"$0.99 Day Pass for 24h, $29 Zambo Pass for 30 days. one-time, never a subscription, identical access. Day Pass link: https://zambo.dev/day-pass/?source=wrap-up&job=[private]#checkout · Zambo Pass link: https://zambo.dev/zambo-pass/?source=wrap-up\",\"day_pass_url\":\"https://zambo.dev/day-pass/?source=wrap-up&job=[private]#checkout\",\"zambo_pass_url\":\"https://zambo.dev/zambo-pass/?source=wrap-up\"},\"x402\":{\"scheme\":\"exact\",\"network\":\"eip155:8453\",\"asset\":\"USDC\",\"amount\":\"990000\",\"payTo\":\"0xb753…b9AC\",\"resource\":\"https://zambo.dev/api/x402/day-pass\"},\"retry\":\"After activating a pass, retry your original call with the same supplied _session_id or _caller_handle.\",\"retry_arguments\":{},\"free_public_fallback\":{\"tool\":\"handover\",\"arguments\":{\"visibility\":\"public\"}}}","result_preview_integrity":"display_only_not_committed","result_preview_truncated":false,"input_hash":"sha256:0a15330a464eaec58083f96959229b3c88a559cf24ef9c8da556a2e928f9e197","input_hash_layout":"zambo-json-sorted-keys-utf8-v1","free_used":0,"free_remaining":20,"free_limit":20,"signal_handle":null,"tool":{"name":"handover","version":"4.0.0","scope":"public"},"caller":{"type":"session","id":"sha256:0a71def56a551b4dbe3e4d2ec9c4d8521d67cb15dc0e60b0f9a72b1619fd911e","label":"audit-seal-probe","label_source":"caller_reported"},"side_effects":{"declared":["none"],"schema_version":"zambo-side-effects/1","declaration_hash":"sha256:45aad38f3aa982b9aafe92ecb416ebe98791eddbaf8ab6df0bd08605b7c1bfee"},"evidence_sha256":null,"evidence_url":null,"evidence_byte_length":null,"evidence_content_type":null,"evidence_source_url":null,"evidence_status":"empty","result_source":null,"evidence_source":null,"external_evidence":[],"provenance":{"result_source":null,"evidence_source":null,"evidence_status":"empty","evidence_captures":[]},"provenance_class":"EXECUTED BY ZAMBO","metadata_hash":"sha256:92de6f8b588efdce4ccce53cb8c783f100a1ccd65d504a455e0a8a8b0f475304","anchor":{"event_id":"23a5c452b583e55bf0a94703f210307917487f301c30d6bd2ba98a817781b364","pubkey":"e13475107d30c918ec664adf2ab1141024a22fb35190f82c9e933704fa49af41","relays":["wss://relay.damus.io","wss://nos.lol","wss://relay.primal.net"],"status":"partial","published_at":"2026-10-31T19:29:17.665Z","schema_version":"zambo-receipt-anchor/1","envelope":{"anchored_at":"2026-10-31T19:29:15.436Z","evidence_url":null,"receipt_uuid":"2e2790fe-e04d-4337-88c5-567a918f1927","output_sha256":"sha256:b8b104ac565fcd15390cf11a0b8c136b213a1f3c1f9aa566b92a428c8f103054","schema_version":"zambo-receipt-anchor/1","evidence_sha256":null,"evidence_byte_length":null},"envelope_bytes":"{\"anchored_at\":\"2026-10-31T19:29:15.436Z\",\"evidence_byte_length\":null,\"evidence_sha256\":null,\"evidence_url\":null,\"output_sha256\":\"sha256:b8b104ac565fcd15390cf11a0b8c136b213a1f3c1f9aa566b92a428c8f103054\",\"receipt_uuid\":\"2e2790fe-e04d-4337-88c5-567a918f1927\",\"schema_version\":\"zambo-receipt-anchor/1\"}"},"receipt_profile":"zambo-hosted-receipt/1","schema_url":"https://zambo.dev/aer-1/hosted-profile.schema.json","api_version":1,"verification_scope":"separate_sha256_commitment_and_provenance_binding_checks","checks":{"commitment_matches":{"label":"SHA-256 commitment","passed":true,"status":"pass","detail":"The exact decoded canonical bytes match the stored SHA-256 output hash."},"canonical_payload_matches":{"label":"Canonical payload reconstruction","passed":true,"status":"pass","detail":"The stored output and known call context reconstruct the exact canonical bytes."},"provenance_binding":{"label":"Provenance claim binding","status":"pass","passed":true,"detail":"The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated."},"metadata_binding":{"label":"AER-1 metadata hash","status":"pass","passed":true,"detail":"metadata_hash matches the canonical metadata block."},"signature":{"label":"Ed25519 signature (not checked)","passed":false,"status":"not_checked","detail":"No Ed25519 signature or pinned signing key was checked."},"chain":{"label":"Receipt chain (not checked)","passed":false,"status":"not_checked","detail":"No append-only receipt-chain proof was checked."},"issued_by_zambo_dev":{"label":"Issuer authentication","passed":false,"status":"not_checked","detail":"A zambo.dev receipt URL does not authenticate the issuer; no pinned signature or trusted issuer key was checked."},"immutable_log_timestamp":{"label":"Stored timestamp","passed":true,"timestamp":"2026-10-31T19:29:15.436Z","detail":"The receipt store reports 2026-10-31T19:29:15.436Z; immutability is not checked here."},"receipt_schema_version":"0.4","signature_valid":{"label":"Ed25519 signature (not checked)","passed":false,"status":"not_checked","detail":"Compatibility field only. No Ed25519 signature was checked; use API v2 checks.commitment_matches for the SHA-256 commitment."},"chain_valid":{"label":"Receipt chain (not checked)","passed":false,"status":"not_checked","detail":"This endpoint does not verify an append-only chain."}},"execution_context":{"environment":"zambo.dev hosted MCP","quota_identity":{"meter_key":"sha256:0669594dfdc9904d76b8a49f85ac18749ddccda7952f321354d6b512d9f3d1f2"}}},"evidence_status":"empty","verification_status":"verified","checks":{"commitment_matches":{"status":"pass","passed":true,"expected_hash":"sha256:b8b104ac565fcd15390cf11a0b8c136b213a1f3c1f9aa566b92a428c8f103054","computed_hash":"sha256:b8b104ac565fcd15390cf11a0b8c136b213a1f3c1f9aa566b92a428c8f103054","detail":"SHA-256 of the exact decoded canonical bytes matches output_hash."},"canonical_payload_matches":{"label":"Canonical payload reconstruction","passed":true,"status":"pass","detail":"The stored output and known call context reconstruct the exact canonical bytes."},"provenance_binding":{"label":"Provenance claim binding","status":"pass","passed":true,"detail":"The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated."},"metadata_binding":{"label":"AER-1 metadata hash","status":"pass","passed":true,"detail":"metadata_hash matches the canonical metadata block."},"issuer_authentication":{"label":"Issuer authentication","passed":false,"status":"not_checked","detail":"A zambo.dev receipt URL does not authenticate the issuer; no pinned signature or trusted issuer key was checked."},"signature":{"status":"not_checked","detail":"No Ed25519 signature or pinned signing key is supplied."},"schema":{"status":"not_checked","detail":"Schema conformance is left to the client using the linked hosted-profile schema."},"chain":{"status":"not_checked","detail":"This endpoint does not verify an append-only receipt chain."}}}