{"uid":"cap_FZark9vxaOS0rsKJpC2PM","slug":"scriptmasterlabs-mev-pulse-11794324","name":"SCRIPTMASTERLABS MEV Pulse","description":"SCRIPTMASTERLABS x402 Gateway. Discover paid APIs and inspect fresh x402 v2 payment requirements before calling them. Current hosted authority is USDC on Base mainnet (eip155:8453); caller controls spending policy. MARKETPLACE REVIEW: use free /x402/playground/* (no key, no payment). Production /x402/* returns 402 unless paid via x402 or X-Api-Market-Key / X-API-Key from seller dashboard.","url":"https://mcp-x402.onrender.com/x402/mev-pulse?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"limit":{"type":"integer"},"relay_url":{"type":"string"}}}}},"output":{"type":"object","required":["type","example"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object"}}}}},"responseSchema":{"example":{}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_fdxG3l_hu_k_HzZN3Fi6R","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns real-time MEV (Maximal Extractable Value) pulse data from a relay, paid via x402 USDC on Base","exampleAgentPrompt":"Pull the latest MEV pulse from the default relay — limit the results to 10 entries — and show me what's happening with transaction ordering right now.","exampleUseCases":[{"title":"Real-time MEV relay monitoring","prompt":"Check the MEV pulse right now and give me the top 5 entries from the relay so I can see if there's unusual transaction ordering activity."},{"title":"DeFi bot competitive analysis","prompt":"Fetch the current MEV pulse from relay https://boost-relay.flashbots.net and return up to 20 results so I can analyze what block builders are active."},{"title":"MEV opportunity scanning","prompt":"Query the MEV pulse endpoint with a limit of 50 and tell me if there are any significant extraction opportunities showing up in the relay data right now."}],"resultDescription":"A JSON object containing a snapshot of current MEV relay activity, including transaction ordering data, relay pulse metrics, and possibly block builder statistics. The response schema is open-ended (example: {}) suggesting the output structure varies by relay and activity.","failureModes":["402 Payment Required if x402 payment not attached and no valid X-Api-Market-Key or X-API-Key provided","relay_url not reachable or returns no data — empty or error JSON response","limit parameter out of range — may return default number of results or error","relay data unavailable during low-activity periods — sparse or null payload","network timeout if the relay URL is slow to respond","invalid relay_url format — likely a 4xx or descriptive error JSON"],"whenToPreferThis":"Use this endpoint when you need real-time MEV relay pulse data and are willing to pay $0.02 USDC per call via x402 on Base mainnet. Prefer this over free alternatives when you need fresh, low-latency relay data with no API key registration. Best suited for DeFi agents, MEV bots, or block-builder monitoring workflows that require on-demand relay snapshots.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:35:43.055Z","isFirstParty":false,"canonicalSlug":"scriptmasterlabs-mev-pulse-11794324"}