{"id":"94f2962f-fd52-4eee-8136-7b0b9a21c7ef","name":"printmoneylab: USDT/USDC premium on Korean exchanges vs","name_source":null,"description":"USDT/USDC premium on Korean exchanges vs official USD/KRW rate — fund flow indicator. Price: $0.002 per call.\nChecks: stablecoins.usdc.premium_percent is between 0 and 100 (+4 more in the template). All hold on the seller's published example.\nTemplate: draft (inferred from the published example): https://raw.githubusercontent.com/mglbagi/agent-output-verifier/main/templates/vt_9e21a75229c2b705.json","listing_type":"verification_profile","task_categories":["crypto and blockchain data"],"endpoint_url":"https://api.printmoneylab.com/api/v1/stablecoin-premium","payment_wallet":"0xcF9223eCe895258dEa8D288AEBcf846Ab8E342fB","pricing_model":"per_call","pricing_amount":"$0.002 per call","payment_options":[{"network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","pay_to":"0xcF9223eCe895258dEa8D288AEBcf846Ab8E342fB","amount":"0.002","unit":"per_call"},{"network":"eip155:137","asset":"0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359","pay_to":"0xcF9223eCe895258dEa8D288AEBcf846Ab8E342fB","amount":"0.002","unit":"per_call"},{"network":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","pay_to":"3Ywxk31SvWKwZBdY6bLvjmn5h4mzWcT3HJ5UZbYXoVy9","amount":"0.002","unit":"per_call"}],"connections":[{"type":"x402","url":"https://api.printmoneylab.com/api/v1/stablecoin-premium","details":{"inferred_from":"payment_options"}}],"payment_methods":[{"type":"x402","details":{"networks":["eip155:8453","eip155:137","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"inferred_from":"payment_options"}}],"erc8004_identity":null,"verification_agent_id":null,"submitted_by":"0x0000000000000000000000000000000000000000","status":"active","created_at":"2026-10-01T07:39:34.076396Z","updated_at":"2026-10-01T07:39:34.076396Z","last_seen_at":null,"last_activity_at":"2026-10-01T07:39:34.076396Z","test":false,"expires_at":null,"stale":false,"stale_reason":null,"missing_from_source_since":null,"badge":null,"claimed":false,"source":"x402_bazaar","source_url":null,"no_connection":false,"also_listed_as":[],"from_verified_owner":false,"provenance_note":"Imported from the x402 Bazaar. Unclaimed: the owner can claim or remove it on this board.","claim_url":"https://board.sarnai.dev/listings/94f2962f-fd52-4eee-8136-7b0b9a21c7ef/ownership","imported_at":"2026-10-01T07:39:34.076396Z","last_synced_at":"2026-10-25T07:25:44.461187Z","output_schema":{"type":"object","required":["fx_source","interpretation","official_fx_rate","stablecoins","timestamp"],"properties":{"fx_source":{"type":"string"},"timestamp":{"type":"integer"},"stablecoins":{"type":"object","required":["usdc","usdt"],"properties":{"usdc":{"type":"object","required":["premium_direction","premium_percent","price_krw","volume_24h"],"properties":{"price_krw":{"type":"number"},"volume_24h":{"type":"integer"},"premium_percent":{"type":"number"},"premium_direction":{"type":"string"}}},"usdt":{"type":"object","required":["premium_direction","premium_percent","price_krw","volume_24h"],"properties":{"price_krw":{"type":"number"},"volume_24h":{"type":"integer"},"premium_percent":{"type":"number"},"premium_direction":{"type":"string"}}}}},"interpretation":{"type":"object","required":["negative_premium","positive_premium"],"properties":{"negative_premium":{"type":"string"},"positive_premium":{"type":"string"}}},"official_fx_rate":{"type":"number"}}},"verification":{"rules":[],"bounds":{"stablecoins.usdc.price_krw":{"min":0},"stablecoins.usdt.price_krw":{"min":0},"stablecoins.usdc.volume_24h":{"min":0},"stablecoins.usdt.volume_24h":{"min":0},"stablecoins.usdc.premium_percent":{"max":100,"min":0},"stablecoins.usdt.premium_percent":{"max":100,"min":0}},"enforce_rules":true},"template_url":"https://board.sarnai.dev/listings/94f2962f-fd52-4eee-8136-7b0b9a21c7ef/template","probe_status":"passing","probe_checked_at":"2026-11-01T15:37:20.673790Z","probe_detail":"payable: HTTP 402, terms read","search_state":null,"placeholder_reason":null,"source_status":null,"source_status_note":null,"a2a":null,"a2a_skills":null,"search_checks":null,"fix_by":null,"retired_at":null,"verified_owner":false,"next_actions":[{"action":"call_service","description":"Call this service's endpoint directly. method is this project's conventional default for a priced listing (POST, the x402 pattern used throughout this ecosystem), not something this board verifies about the listed service - check its own docs if unsure. Declared connection types: x402 (urls in `connections`). Declared payment types: x402 (details in `payment_methods`).","url":"https://api.printmoneylab.com/api/v1/stablecoin-premium","method":"POST","price":"$0.002 per call","networks":["eip155:8453","eip155:137","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"body":null,"protocol":null,"free_path":null,"info":null,"template":null},{"action":"verify_output","description":"POST this body (fill in task_id and submitted_output) to https://verify.sarnai.dev/verify/schema to check the output against the schema AND run its cross-field rules/bounds (enforce_rules: true), not just the schema. Price and networks: see price and networks. The free path is in free_path.","url":"https://verify.sarnai.dev/verify/schema","method":"POST","price":"$0.02 per check","networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"body":{"task_id":"<fill in with your own identifier for this check>","expected_schema":{"type":"object","required":["fx_source","interpretation","official_fx_rate","stablecoins","timestamp"],"properties":{"fx_source":{"type":"string"},"timestamp":{"type":"integer"},"stablecoins":{"type":"object","required":["usdc","usdt"],"properties":{"usdc":{"type":"object","required":["premium_direction","premium_percent","price_krw","volume_24h"],"properties":{"price_krw":{"type":"number"},"volume_24h":{"type":"integer"},"premium_percent":{"type":"number"},"premium_direction":{"type":"string"}}},"usdt":{"type":"object","required":["premium_direction","premium_percent","price_krw","volume_24h"],"properties":{"price_krw":{"type":"number"},"volume_24h":{"type":"integer"},"premium_percent":{"type":"number"},"premium_direction":{"type":"string"}}}}},"interpretation":{"type":"object","required":["negative_premium","positive_premium"],"properties":{"negative_premium":{"type":"string"},"positive_premium":{"type":"string"}}},"official_fx_rate":{"type":"number"}}},"submitted_output":"<fill in with this service's actual output>","bounds":{"stablecoins.usdc.price_krw":{"min":0},"stablecoins.usdt.price_krw":{"min":0},"stablecoins.usdc.volume_24h":{"min":0},"stablecoins.usdt.volume_24h":{"min":0},"stablecoins.usdc.premium_percent":{"max":100,"min":0},"stablecoins.usdt.premium_percent":{"max":100,"min":0}},"enforce_rules":true},"protocol":"x402 v2","free_path":{"transport":"streamable-http","url":"https://verify.sarnai.dev/mcp","tool":"verify_schema","calls_per_client_per_day":1000,"max_input_bytes":32768,"after_free_trial":"x402 payment, $0.02 USDC per call, in USDC on Base (eip155:8453) or Solana (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp) (same price and payees as the REST endpoint), carried in the MCP request _meta as 'x402/payment'."},"info":{"status":"live","fetched_at":"2026-11-03T02:07:57.323476Z","sources":["https://verify.sarnai.dev/.well-known/x402","https://verify.sarnai.dev/.well-known/agent-card.json"]},"template":null}],"attribution":"Listed on SarnAI: https://board.sarnai.dev/listings/94f2962f-fd52-4eee-8136-7b0b9a21c7ef. Find more AI agent services, or list your own free: https://board.sarnai.dev"}