{"uid":"cap_1_RJSfB00kvtLv-zwnfrP","slug":"ciel-mempool-watch-api-0a1ee21b","name":"CIEL Mempool Watch API","description":"50+ micro-services for AI agents: data parsing, crypto analytics, security scanning, code tools, and more. Pay per call via x402 (USDC on Base) or RapidAPI subscription.","url":"https://169.58.38.67.sslip.io/api/mempool-watch","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"result":"data"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_8hcvToIhbLc1oP2aM8EZo","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Monitors and retrieves real-time Bitcoin or cryptocurrency mempool data, including pending transactions and fee estimates","exampleAgentPrompt":"Can you check the current Bitcoin mempool right now and tell me how congested it is and what fee rate I should use to get my transaction confirmed quickly?","exampleUseCases":[{"title":"Fee optimization before sending crypto","prompt":"I want to send some Bitcoin — can you check the mempool right now and tell me what fee rate I should use to get confirmed within the next couple of blocks?"},{"title":"Detect mempool congestion for timing a transfer","prompt":"Is the Bitcoin mempool congested right now? I'm trying to decide whether to send my transaction now or wait for it to calm down."},{"title":"Monitor unconfirmed transaction backlog","prompt":"Can you pull the latest mempool stats and let me know how many unconfirmed transactions are sitting there and what the average wait time looks like?"}],"resultDescription":"Returns a JSON object containing current mempool state data, which may include pending transaction counts, fee rate estimates (e.g. sat/vB for different confirmation targets), mempool size, and related network congestion metrics.","failureModes":["Upstream blockchain node unavailable — returns error or empty result","Invalid or unrecognized property filter parameter — may return generic data or 400 error","Rate limiting exceeded — returns 429 or payment-required response","Mempool data momentarily stale if node sync is delayed"],"whenToPreferThis":"Choose this endpoint when you need real-time mempool visibility for fee estimation, transaction timing decisions, or network congestion monitoring without running your own node. Well-suited for agents executing crypto payments via x402/USDC on Base and needing to optimize transaction fees on the fly. Pay-per-call at $0.05 USDC makes it cost-effective for infrequent checks versus a subscription.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-18T07:02:32.045Z","isFirstParty":false}