{"id":"42ecd69b-d4d8-425b-a20a-4dbf23b6bc69","shortId":"VBFNJh","kind":"x402","title":"Compare gas costs across blockchain networks via a paid x402 endpoint.","tagline":"Compare gas costs across blockchain networks via a paid x402 endpoint.","description":"The gas-compare endpoint at bridge.eruditepay.com accepts a POST request with a blockchain chain name (e.g. \"base\", \"ethereum\", \"tron\") and returns gas cost comparison data. It is operated by Erudite Intelligence LLC, the same entity behind the EruditePay x402 Bridge — a payment facilitator supporting 20 blockchains. The endpoint is described in its x402 challenge as providing \"Crypto data intelligence.\"\n\nPayment is required per-call via the x402 protocol (version 2). The endpoint accepts two payment options: USDC on Base (eip155:8453) at 10,000 base units ($0.01 per call, since USDC uses 6 decimals), or USDT on Tron (tron:728126428) at 10,000 base units ($0.01 per call). Payment is facilitated through the Coinbase CDP x402 facilitator for the Base option. The maximum payment timeout is 300 seconds for both options.\n\nThe response schema indicates a JSON object with a \"success\" boolean and a \"data\" object, though the exact structure of the data payload is not documented beyond the example stub `{\"success\": true, \"data\": {}}`. No OpenAPI spec or detailed documentation was found for this specific endpoint — the provider's /docs path returns a 404. The EruditePay Bridge landing page focuses on the facilitator service (verify/settle) rather than data intelligence endpoints, so the precise fields returned by gas-compare remain unclear.","tags":[],"capabilities":["gas-price-comparison","multi-chain-gas-data","x402-payment","usdc-base-payment","usdt-tron-payment","blockchain-analytics","crypto-data-intelligence"],"categories":["crypto","blockchain","gas-estimation"],"synonyms":["gas fee comparison","blockchain gas costs","gas price API","multi-chain gas estimator","crypto gas tracker","network fee comparison","transaction cost comparison"],"warnings":["Response data structure is undocumented — the example output only shows an empty data object","No OpenAPI specification or detailed API documentation available for this endpoint","The provider's /docs endpoint returns 404","The exact fields and depth of gas comparison data returned are unknown"],"endpointUrl":"https://bridge.eruditepay.com/v1/multi/gas-compare","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x6961b88476a9b89C4ed97A4aF4D190754d5e70A1","amount":"30000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}]},"qualityScore":"0.400","qualityRationale":"The endpoint is live (returns a valid x402 402 challenge) with clear pricing and payment options. However, the response data structure is essentially undocumented — the example output is just an empty object stub. No OpenAPI spec exists, the /docs path 404s, and the landing page does not describe this data intelligence endpoint. The input schema is minimal (just a chain 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'0.01':111,130 '000':108,127 '10':107,126 '2':94 '20':68 '300':151 '404':208 '6':117 '728126428':124 '8453':105 'accept':30,97 'across':4,15 'base':40,103,109,128,144 'behind':59 'beyond':182 'blockchain':5,16,36,69 'blockchain gas costs' 'blockchain-analytics' 'boolean':166 'bridg':63,211 'bridge.eruditepay.com':29 'call':88,113,132 'cdp':139 'chain':37 'challeng':77 'coinbas':138 'compar':1,12,26,233 'comparison':47 'cost':3,14,46 'crypto':80 'crypto gas tracker' 'crypto-data-intelligence' 'data':48,81,169,177,188,222 'decim':118 'describ':73 'detail':193 'document':181,194 'e.g':39 'eip155':104 'endpoint':11,22,27,71,96,200,224 'entiti':58 'erudit':53 'eruditepay':61,210 'ethereum':41 'exact':173 'exampl':184 'facilit':66,135,141,217 'field':228 'focus':214 'found':196 'gas':2,13,25,45,232 'gas fee comparison' 'gas price API' 'gas-compar':24,231 'gas-price-comparison' 'indic':159 'intellig':54,82,223 'json':161 'land':212 'llc':55 'maximum':147 'multi-chain gas estimator' 'multi-chain-gas-data' 'name':38 'network':6,17 'network fee comparison' 'object':162,170 'openapi':190 'oper':51 'option':100,145,155 'page':213 'paid':9,20 'path':205 'payload':178 'payment':65,83,99,133,148 'per':87,112,131 'per-cal':86 'post':32 'precis':227 'protocol':92 'provid':79,202 'rather':220 'remain':234 'request':33 'requir':85 'respons':157 'return':44,206,229 'schema':158 'second':152 'servic':218 'sinc':114 'spec':191 'specif':199 'structur':174 'stub':185 'success':165,186 'support':67 'though':171 'timeout':149 'transaction cost comparison' 'tron':42,122,123 'true':187 'two':98 'unclear':235 'unit':110,129 'usdc':101,115 'usdc-base-payment' 'usdt':120 'usdt-tron-payment' 'use':116 'verify/settle':219 'version':93 'via':7,18,89 'x402':10,21,62,76,91,140 'x402-payment'","prices":[{"id":"2790ddd3-3730-40ff-af1a-6ca30dd19434","listingId":"42ecd69b-d4d8-425b-a20a-4dbf23b6bc69","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":null,"chain":"base","payTo":"0x6961b88476a9b89C4ed97A4aF4D190754d5e70A1","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x6961b88476a9b89C4ed97A4aF4D190754d5e70A1","amount":"30000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:35.871Z"}],"sources":[{"listingId":"42ecd69b-d4d8-425b-a20a-4dbf23b6bc69","source":"x402_bazaar","sourceId":"https://bridge.eruditepay.com/v1/multi/gas-compare","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:35.871Z","lastSeenAt":"2026-04-22T15:03:26.219Z"}],"details":{"listingId":"42ecd69b-d4d8-425b-a20a-4dbf23b6bc69","quickStartSnippet":"curl -X POST https://bridge.eruditepay.com/v1/multi/gas-compare \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_header>\" \\\n  -d '{\"chain\": \"base\"}'","exampleRequest":{"chain":"base"},"exampleResponse":{"data":{},"success":true},"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint is operated by Erudite Intelligence LLC","source_url":"https://bridge.eruditepay.com"},{"claim":"Accepts USDC on Base and USDT on Tron at 10,000 base units ($0.01) per call","source_url":"https://bridge.eruditepay.com/v1/multi/gas-compare"},{"claim":"EruditePay Bridge supports 20 blockchains","source_url":"https://bridge.eruditepay.com"},{"claim":"FinCEN MSB registered, BSA ID 31000324258137","source_url":"https://bridge.eruditepay.com"},{"claim":"Payment facilitated via Coinbase CDP x402 facilitator for Base option","source_url":"https://bridge.eruditepay.com/v1/multi/gas-compare"}],"useCases":["Compare gas fees across multiple blockchain networks before submitting transactions","Build dashboards showing real-time gas cost differences between chains","Optimize cross-chain bridging by selecting the cheapest network at a given moment","Integrate gas cost data into DeFi routing algorithms"],"bestFor":["Developers building cross-chain applications who need gas cost intelligence","DeFi protocols optimizing transaction routing across chains","Wallet applications displaying gas fee comparisons to users"],"notFor":["Users needing free gas data — every call costs $0.01","Applications requiring detailed gas estimation for specific contract calls (this appears to be a comparison endpoint, not a gas estimator)"],"kindDetails":{},"updatedAt":"2026-04-22T01:33:22.885Z"}}