{"uid":"cap_B-iT2ekNOt6q5Axl2n03T","slug":"agent402-tools-gas-price-snapshot-88fbd896","name":"agent402.tools Gas Price Snapshot","description":"Live gas price snapshot for a chain - slow / standard / fast tiers in gwei, plus the latest base fee. Sampled from eth_feeHistory (last 4 blocks, 25th/50th/90th percentile priority fees). Use to estimate before broadcasting a transaction from another tool.","url":"https://agent402.tools/api/gas-snapshot","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"network":{"type":"string","description":"ethereum / base / polygon / arbitrum / optimism (default base)."}}},"responseSchema":{"type":"json","example":{"fast":{"totalGwei":0.01,"priorityFeeGwei":0.005},"slow":{"totalGwei":0.006,"priorityFeeGwei":0.001},"chainId":8453,"network":"base","standard":{"totalGwei":0.007,"priorityFeeGwei":0.002},"baseFeeGwei":0.005}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_679YW2SAc_IagW5Uk4wsZ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a live gas price snapshot for a specified EVM chain, including slow/standard/fast tiers in gwei and the latest base fee, sampled from eth_feeHistory.","exampleAgentPrompt":"What are the current slow, standard, and fast gas prices on Ethereum right now — I need the gwei tiers and the latest base fee before I broadcast a transaction.","exampleUseCases":null,"resultDescription":"A snapshot object containing gas price tiers (slow, standard, fast) in gwei plus the current base fee, derived from eth_feeHistory over the last 4 blocks at the 25th, 50th, and 90th percentile priority fees for the requested network.","failureModes":["Unsupported network name returns an error or defaults to Base","RPC node unavailability for the target chain causes fetch failure","Stale data if sampled blocks are delayed","Invalid or missing network field may default to Base silently"],"whenToPreferThis":"Use this endpoint when an agent needs a real-time, multi-tier gas price estimate (slow/standard/fast) for EVM-compatible chains before constructing or broadcasting a transaction. Prefer it over static estimates or manual RPC calls when you need percentile-based fee history across Ethereum, Base, Polygon, Arbitrum, or Optimism in a single call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:14:06.642Z","isFirstParty":false}