{"uid":"cap_z3NEeGSz83Pjf3mwMjAfo","slug":"suggested-eip-1559-priority-fee-miner-tip-3aed2aa1","name":"Suggested EIP-1559 Priority Fee (Miner Tip)","description":"Suggested EIP-1559 priority fee (miner tip) — Genesis402 / UnyKorn Operator Network","url":"https://twin.unykorn.org/evm-priority-fee?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"params":{"type":"object","properties":{"chain":{"enum":["ethereum","base","polygon","arbitrum","optimism","bsc","avalanche","gnosis","linea","scroll"],"type":"string"}}}}},"responseSchema":{"type":"json","example":{"ok":true,"type":"evm-priority-fee","receipt":{"tx_hash":"0x<64hex>","amount_usd":0.002,"receipt_id":"g402-<16hex>"},"generated_at":"<iso8601>"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm__wMk1kaDNJyenWO96k72o","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the current suggested EIP-1559 priority fee (miner tip) for a specified EVM-compatible blockchain network","exampleAgentPrompt":"What's the suggested EIP-1559 priority fee I should use for a transaction on the Base network right now?","exampleUseCases":[{"title":"Gas optimization for DeFi transaction","prompt":"I'm about to submit a DeFi swap on Arbitrum — what priority fee should I set so it gets picked up quickly without overpaying?"},{"title":"Multi-chain fee comparison","prompt":"What's the current suggested miner tip on Polygon? I'm trying to decide whether to bridge funds there or stay on Ethereum."},{"title":"Automated transaction fee setting","prompt":"My bot is about to send a batch of transactions on Optimism — can you get the current recommended EIP-1559 priority fee so I can set it correctly?"}],"resultDescription":"Returns a JSON object with ok:true, a type field identifying the response as 'evm-priority-fee', a payment receipt object containing the transaction hash, USD amount charged, and a receipt ID, plus a generated_at ISO 8601 timestamp. The priority fee value itself is part of the response payload for the queried chain.","failureModes":["Invalid or unsupported chain name returns an error — only the ten enumerated chains (ethereum, base, polygon, arbitrum, optimism, bsc, avalanche, gnosis, linea, scroll) are supported","Payment failure via x402 protocol prevents the call from completing","Network congestion or RPC node unavailability on the queried chain may cause a delayed or failed response","Malformed request body missing the chain parameter returns a validation error"],"whenToPreferThis":"Choose this endpoint when your agent needs a real-time, pay-per-call EIP-1559 priority fee suggestion for one of ten supported EVM chains without running your own node infrastructure. It is ideal for transaction-sending workflows, gas optimization logic, or DeFi agents that need a reliable miner tip recommendation on-demand. Prefer this over self-hosted RPC solutions when minimizing infrastructure overhead and paying only per query ($0.002 USDC) is acceptable.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T18:55:44.343Z","isFirstParty":false,"canonicalSlug":"suggested-eip-1559-priority-fee-miner-tip-3aed2aa1"}