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When free calls run out, a funded agent may buy its own $0.99 USDC Day Pass via https://zambo.dev/api/x402/day-pass on Base, within its wallet and user limits, and retry the same call. 4. Human fallback: day_pass_checkout_link after the person agrees to receive a checkout link. Every session result has a private Today link. memory_remember/recall keep private facts; spend_limit_set/status control this work connection's budget; handover_accept resumes readable work. These tools are free. Receipts check saved bytes, not answer correctness.","documentation":["https://zambo.dev/docs/today/","https://zambo.dev/docs/memory/","https://zambo.dev/docs/limits/","https://zambo.dev/capabilities/","https://zambo.dev/today/"]},"workflowReceiptGuideUrl":"https://zambo.dev/answers/what-is-a-workflow-receipt/"},"status":"verified","publisher_domain":"zambo.dev","signature_status":"unsigned","signature_detail":"No card signature supplied","signature_key_url":null,"signature_checked_at":"2026-10-29T03:07:31.494448+00:00","domain_claimed_at":null,"domain_proof_checked_at":null,"source_name":"Publisher Agent Card","source_url":"https://zambo.dev/.well-known/agent.json","last_check":{"checked_at":"2026-10-29T03:07:31.494448+00:00","success":true,"http_status":200,"detail":"Agent Card validated"},"also_published_at":[],"history_urls":["https://zambo.dev/.well-known/agent.json"],"skills":[{"skill_id":"day_pass_activate","name":"Agent Day Pass","description":"Receive the live x402 v2 challenge and autonomously settle the $0.99 USDC Day Pass on the agent's own behalf. 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Read-only observations do not establish task quality or safety.","x402_price_check":null,"events":[],"relationships":[],"verification":{"agent_card_url":"https://zambo.dev/.well-known/agent.json","last_successful_card_check":"2026-10-29T03:07:31.494448+00:00","latest_card_check":{"checked_at":"2026-10-29T03:07:31.494448+00:00","success":true,"http_status":200,"detail":"Agent Card validated"},"signature_status":"unsigned","signature_checked_at":"2026-10-29T03:07:31.494448+00:00","task_endpoint_tested":true,"task_execution_tested":false,"endpoint_tls_checked_at":"2026-10-29T03:07:31.494448+00:00","endpoint_tls_reachable":true,"protocol_check_state":"a2a_response","protocol_checked_at":"2026-10-29T03:07:31.494448+00:00","provider_identity_verified":false,"domain_claimed_at":null,"domain_proof_checked_at":null},"synthetic_capability_tests":{"agent_id":504496,"status":"not_tested","reason_code":"not_yet_tested","consent_status":"not_confirmed","latest_observation_status":null,"last_checked_at":null,"fixture_version":"1","reference_demonstration":false,"scope":"A publisher-authorized synthetic test of a dedicated free test endpoint. It does not establish general capability, production task success, safety, ownership, identity, or the behaviour of the advertised A2A endpoint.","methodology_url":"https://localmark.ai/capability-tests","history":[]},"repair_links":{"agent_repair_url":"https://localmark.ai/agents/504496/repair","publisher_report_url":"https://localmark.ai/publishers/zambo.dev/repair","diagnostics_json_url":"https://localmark.ai/publishers/zambo.dev/repair/diagnostics.json","diagnostics_csv_url":"https://localmark.ai/publishers/zambo.dev/repair/diagnostics.csv"},"_localmark":{"contribution":{"optional":true,"directory_access":"free","operator_authorization_required":true,"affects_rankings":false,"message":"LocalMark is free. Optional contributions help fund ongoing checks.","support_url":"https://localmark.ai/support","metadata_url":"https://localmark.ai/api/v1/support/contributions"}}}