{"uid":"cap_Ty2D9J1LoYv6RZEZJxmjT","slug":"glassnode-mean-block-size-metric-05f497dd","name":"Glassnode Mean Block Size Metric","description":"Mean Block Size — The mean size, in bytes, of all blocks created within the time period. Data by Glassnode.","url":"https://x402.glassnode.com/v1/metrics/blockchain/block_size_mean","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":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["a"],"properties":{"a":{"enum":["BTC","ETH"],"type":"string","description":"Asset symbol, e.g. BTC, ETH"},"c":{"enum":["native"],"type":"string","description":"Currency for denominated values, e.g. usd, native"},"f":{"enum":["csv","json"],"type":"string","description":"Response format: json or csv"},"i":{"enum":["1month","1w","24h"],"type":"string","description":"Time interval / resolution, e.g. 24h, 1w, 1month"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"array","items":{"type":"object","properties":{"t":{"type":"number"},"v":{"type":"number"}}}}}}}},"responseSchema":null,"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_iGKOpZImlc6nz2UHdhP0T","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":"Returns the mean size (in bytes) of all blocks created on Bitcoin or Ethereum within a specified time period.","exampleAgentPrompt":"Can you pull the Glassnode mean block size metric for BTC at a 24h resolution so I can see how average block sizes have been trending recently?","exampleUseCases":null,"resultDescription":"Returns a JSON array of time-series data points, each containing a Unix timestamp (t) and the mean block size value in bytes (v) for the requested asset and time interval.","failureModes":["Missing required 'a' parameter (asset) returns 400 Bad Request","Invalid asset symbol (not BTC or ETH) returns validation error","Invalid interval value (not 24h, 1w, or 1month) returns enum error","Payment not included or insufficient USDC triggers 402 Payment Required","Rate limiting or quota exceeded returns 429 Too Many Requests","Service unavailable from Glassnode upstream returns 503"],"whenToPreferThis":"Use this endpoint when you need time-series mean block size data for BTC or ETH from a trusted, paid on-chain analytics provider (Glassnode). Prefer this over free APIs when data quality, reliability, and Glassnode's proprietary methodology matter. Best for blockchain health monitoring, network analysis, or fee/congestion research workflows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:36:04.416Z","isFirstParty":false}