{"id":"c180d8a1-e55e-4b8f-8093-5f97c64dafca","name":"kgy5612: Which EVM chain is cheapest to execute on right","name_source":null,"description":"Which EVM chain is cheapest to execute on right now?. Price: $0.002 per call.\nChecks: every chains[].chain_id is unique; 6 numeric fields are 0 or more (erc20_transfer_usd, gas_price_gwei, ...) (+3 more in the template).\nTemplate: draft (inferred from the published example): https://raw.githubusercontent.com/mglbagi/agent-output-verifier/main/templates/vt_7a9fc3ffdb19b46a.json","listing_type":"verification_profile","task_categories":["crypto and blockchain data"],"endpoint_url":"https://kr-x402-mvp.kgy5612.workers.dev/crypto/gas-compare","payment_wallet":"0xe4be4d0bd82d8e68203deff81f79ede0529f2617","pricing_model":"per_call","pricing_amount":"$0.002 per call","payment_options":[{"network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","pay_to":"0xe4be4d0bd82d8e68203deff81f79ede0529f2617","amount":"0.002","unit":"per_call"}],"connections":[{"type":"x402","url":"https://kr-x402-mvp.kgy5612.workers.dev/crypto/gas-compare","details":{"method":"GET","input_fields":[{"in":"query","name":"chains","type":"string","example":"base,ethereum,arbitrum","required":false,"description":"Comma list subset of base,ethereum,arbitrum,optimism,polygon,bsc (default all)"},{"in":"query","name":"gas","type":"integer","example":200000,"required":false,"description":"Optional custom gas units; result sorted by custom_usd"}],"example_request":{"url":"https://kr-x402-mvp.kgy5612.workers.dev/crypto/gas-compare","query":{"gas":200000,"chains":"base,ethereum,arbitrum"},"method":"GET"}}}],"payment_methods":[{"type":"x402","details":{"networks":["eip155:8453"],"inferred_from":"payment_options"}}],"erc8004_identity":null,"verification_agent_id":null,"submitted_by":"0x0000000000000000000000000000000000000000","status":"active","created_at":"2026-10-30T08:22:54.440791Z","updated_at":"2026-10-30T08:22:54.440791Z","last_seen_at":null,"last_activity_at":"2026-10-30T08:22:54.440791Z","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/c180d8a1-e55e-4b8f-8093-5f97c64dafca/ownership","imported_at":"2026-10-30T08:22:54.440791Z","last_synced_at":"2026-10-30T08:22:54.440791Z","output_schema":{"type":"object","required":["chains","cheapest","cheapest_swap_usd","ethereum_vs_cheapest_x","gas_units","recommendation","sorted_by","updated_at"],"properties":{"chains":{"type":"array","items":{"type":"object","required":["chain","chain_id","erc20_transfer_usd","gas_price_gwei","latency_ms","native","native_usd","rollup_l1_fee_extra","swap_usd","transfer_usd","upstream"],"properties":{"chain":{"type":"string"},"native":{"type":"string"},"chain_id":{"type":"integer"},"swap_usd":{"type":"number"},"upstream":{"type":"string"},"latency_ms":{"type":"integer"},"native_usd":{"type":"number"},"transfer_usd":{"type":"number"},"gas_price_gwei":{"type":"number"},"erc20_transfer_usd":{"type":"number"},"rollup_l1_fee_extra":{"type":"boolean"}}}},"cheapest":{"type":"string"},"gas_units":{"type":"object","required":["erc20_transfer","swap","transfer"],"properties":{"swap":{"type":"integer"},"transfer":{"type":"integer"},"erc20_transfer":{"type":"integer"}}},"sorted_by":{"type":"string"},"updated_at":{"type":"string","format":"date-time"},"recommendation":{"type":"string"},"cheapest_swap_usd":{"type":"number"},"ethereum_vs_cheapest_x":{"type":"integer"}}},"verification":{"rules":[{"type":"unique","field":"chains[].chain_id"}],"bounds":{"chains[].swap_usd":{"min":0},"cheapest_swap_usd":{"min":0},"chains[].native_usd":{"min":0},"chains[].transfer_usd":{"min":0},"chains[].gas_price_gwei":{"min":0},"chains[].erc20_transfer_usd":{"min":0}},"enforce_rules":true},"template_url":"https://board.sarnai.dev/listings/c180d8a1-e55e-4b8f-8093-5f97c64dafca/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,"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://kr-x402-mvp.kgy5612.workers.dev/crypto/gas-compare","method":"POST","price":"$0.002 per call","networks":["eip155:8453"],"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":["chains","cheapest","cheapest_swap_usd","ethereum_vs_cheapest_x","gas_units","recommendation","sorted_by","updated_at"],"properties":{"chains":{"type":"array","items":{"type":"object","required":["chain","chain_id","erc20_transfer_usd","gas_price_gwei","latency_ms","native","native_usd","rollup_l1_fee_extra","swap_usd","transfer_usd","upstream"],"properties":{"chain":{"type":"string"},"native":{"type":"string"},"chain_id":{"type":"integer"},"swap_usd":{"type":"number"},"upstream":{"type":"string"},"latency_ms":{"type":"integer"},"native_usd":{"type":"number"},"transfer_usd":{"type":"number"},"gas_price_gwei":{"type":"number"},"erc20_transfer_usd":{"type":"number"},"rollup_l1_fee_extra":{"type":"boolean"}}}},"cheapest":{"type":"string"},"gas_units":{"type":"object","required":["erc20_transfer","swap","transfer"],"properties":{"swap":{"type":"integer"},"transfer":{"type":"integer"},"erc20_transfer":{"type":"integer"}}},"sorted_by":{"type":"string"},"updated_at":{"type":"string","format":"date-time"},"recommendation":{"type":"string"},"cheapest_swap_usd":{"type":"number"},"ethereum_vs_cheapest_x":{"type":"integer"}}},"submitted_output":"<fill in with this service's actual output>","rules":[{"type":"unique","field":"chains[].chain_id"}],"bounds":{"chains[].swap_usd":{"min":0},"cheapest_swap_usd":{"min":0},"chains[].native_usd":{"min":0},"chains[].transfer_usd":{"min":0},"chains[].gas_price_gwei":{"min":0},"chains[].erc20_transfer_usd":{"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":"2026-11-02T23:53:29.040520Z","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/c180d8a1-e55e-4b8f-8093-5f97c64dafca. Find more AI agent services, or list your own free: https://board.sarnai.dev"}