{"uid":"cap_m0YjeyRr8NGAGGTHJBmrT","slug":"blockchain-com-explorer-mempool-transaction-count-chart-414e7fa8","name":"Blockchain.com Explorer - Mempool Transaction Count Chart","description":"Paid AI-agent access to Blockchain.com Explorer API","url":"https://api.blockchain.info/explorer-gateway-kt/x402/charts/mempool-count?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"cors":{"type":"boolean","default":false,"description":"Enable CORS headers"},"format":{"enum":["json","csv"],"type":"string","default":"json","description":"Response format:\n- `json` — Returns structured JSON with metadata and values\n- `csv` — Returns raw CSV data with timestamp and value columns (no metadata)\n"},"sampled":{"type":"boolean","default":true,"description":"Apply sampling to reduce data points"},"metadata":{"type":"boolean","default":false,"description":"Include metadata in response"},"timespan":{"type":"string","default":"1y","example":"1y","description":"Time period (e.g., \"24h\", \"7d\", \"1y\", \"3y\")"},"rollingAverage":{"type":"string","default":"8h","example":"8h","description":"Rolling average window (e.g., \"8h\", \"24h\")"}}},"responseSchema":{"type":"json","format":"application/json","example":{"name":"Mempool Transaction Count","unit":"Transactions","period":"minute","status":"ok","values":[{"x":1704067200,"y":18342},{"x":1704068100,"y":19105}],"description":"The number of transactions waiting to be confirmed."}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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_7JI_8I7hZAdqmkXmLlAo6","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 time-series chart data showing the number of unconfirmed Bitcoin transactions in the mempool over a specified time period","exampleAgentPrompt":"Can you pull the Bitcoin mempool transaction count chart from Blockchain.com for the past year, using an 8-hour rolling average, and return it as JSON?","exampleUseCases":[{"title":"Monitoring Bitcoin Network Congestion","prompt":"Show me the Bitcoin mempool unconfirmed transaction count over the last 7 days with a 24-hour rolling average — I want to see if the network is getting more congested."},{"title":"Historical Mempool Trend Analysis","prompt":"Fetch the Bitcoin mempool transaction count chart for the past 3 years from Blockchain.com Explorer, sampled and in JSON format, so I can analyze long-term congestion trends."},{"title":"Real-Time Fee Timing Decision","prompt":"What does the Bitcoin mempool look like over the last 24 hours in terms of unconfirmed transaction count? Give me the data with an 8-hour rolling average so I can decide if now is a good time to send a transaction."}],"resultDescription":"A time-series dataset of Bitcoin mempool unconfirmed transaction counts, returned as JSON (with optional metadata) or CSV. Each data point includes a timestamp and the count value, optionally smoothed by a configurable rolling average window. Metadata fields may include chart name, description, and unit labels.","failureModes":["Invalid timespan format returns a 400 error","Invalid rollingAverage window value causes a bad request response","Payment failure (402) if USDC payment is not included or insufficient","Rate limiting or access denial if API credentials are invalid","Empty dataset if the requested timespan has no recorded data"],"whenToPreferThis":"Use this endpoint when you need historical or near-real-time Bitcoin mempool transaction count data from Blockchain.com's authoritative explorer. Prefer this over generic crypto APIs when you need flexible time ranges (24h to 3y), configurable rolling averages, and structured JSON or CSV output. Ideal for agents monitoring Bitcoin network congestion, timing transactions, or performing on-chain analytics.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T12:41:07.150Z","isFirstParty":false,"canonicalSlug":"blockchain-com-explorer-mempool-transaction-count-chart-414e7fa8"}