{"uid":"cap_nrh003SgnUWRKXmI0Zt_f","slug":"synthora-l2-transaction-fee-comparison-table-dbf12ae7","name":"SYNTHORA L2 Transaction Fee Comparison Table","description":"Returns median transaction cost in ETH and USD across major L2s (Arbitrum, Base, Optimism, Linea, Mantle, Metis, Mode, Scroll and more) from growthepie. Serves autonomous multi-chain agents and agent-to-agent cost routers choosing the cheapest rollup for a given action in real time. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.","url":"https://l2-transaction-fee-comparison.hergertsynthora.com/service","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"keys":{"type":"string","description":"keys"},"caller":{"type":"string","description":"caller"},"payload":{"type":"string","description":"payload"},"provides":{"type":"string","description":"provides"}}},"responseSchema":{"type":"json","example":{"ok":true,"niche":"l2-transaction-fee-comparison","result":{"chain_data":{"fee":null,"l2_fee":null,"txcount":null,"fee_7d_avg":null,"fee_30d_avg":null,"project_name":"","l2_fee_7d_avg":null,"l2_fee_30d_avg":null,"txcount_7d_avg":null,"txcount_30d_avg":null}},"provenance":{"url":"https://api.growthepie.xyz/v1/fees/table.json","source":"L2 Transaction Fee Comparison Table"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_CUJXIvFrqsfB3_w1HO_Xe","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns median transaction costs in ETH and USD across major Ethereum L2 rollups (Arbitrum, Base, Optimism, Linea, Mantle, Metis, Mode, Scroll, and more) sourced from growthepie.","exampleAgentPrompt":"What are the current median transaction fees in ETH and USD across the major L2s — Arbitrum, Base, Optimism, Linea, Scroll, and Mantle — so I can pick the cheapest rollup to submit my transaction on right now?","exampleUseCases":[{"title":"Cheapest L2 routing for agent transaction","prompt":"Before I submit this on-chain action, check the current median fees across all major rollups — Arbitrum, Base, Optimism, Linea, Mantle — and tell me which one is cheapest right now in both ETH and USD."},{"title":"DeFi cost dashboard for multi-chain portfolio","prompt":"Pull the latest transaction fee comparison table across all supported L2s and show me the 7-day and 30-day averages alongside today's live fees, so I can see which chains are trending cheaper."},{"title":"Automated rollup cost monitor for agent fleet","prompt":"Every time I'm about to route a transaction through one of our agents, compare the current median fees on Arbitrum, Base, Optimism, Scroll, and Mantle and automatically pick the one with the lowest cost in USD."}],"resultDescription":"A JSON object containing per-chain fee data including current median fee in ETH and USD, L2-specific fee, transaction count, 7-day and 30-day rolling averages for both fee and transaction count, and the project name — covering all major L2 rollups tracked by growthepie.","failureModes":["growthepie upstream API unavailable — may return null fee fields or empty chain_data","Stale fee data if growthepie cache has not refreshed recently","Missing or malformed payload/keys fields causing request rejection","Chain not yet indexed by growthepie returning null values for that chain","Payment failure via x402 protocol blocking the request entirely"],"whenToPreferThis":"Choose this endpoint when you need real-time or near-real-time cross-L2 fee benchmarking from a single call aggregating multiple rollups. It is ideal for autonomous agents that must cost-route transactions across Arbitrum, Base, Optimism, Linea, Mantle, Metis, Mode, Scroll, and similar chains without querying each chain's RPC separately. Prefer it over on-chain fee estimation when a summary comparison table is sufficient and speed matters more than per-transaction precision.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:33:24.031Z","isFirstParty":false}