{"uid":"cap_AXf9TxwS3XpqgLEg5263T","slug":"glassnode-eth2-slot-height-metric-e3b86f7b","name":"Glassnode ETH2 Slot Height Metric","description":"Slot Height — The slot height, i.e. the total number of slots ever included in the main blockchain. Data by Glassnode.","url":"https://x402.glassnode.com/v1/metrics/eth2/slot_height","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":["ETH"],"type":"string","description":"Asset symbol, e.g. BTC, ETH"},"f":{"enum":["csv","json"],"type":"string","description":"Response format: json or csv"},"i":{"enum":["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_S4RWFL9vXfWDVdhH6ZH2o","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 cumulative total number of slots ever included in the Ethereum 2.0 beacon chain (slot height) as a time series.","exampleAgentPrompt":"Can you pull the Glassnode ETH2 slot height metric for Ethereum in JSON format with daily resolution so I can see how the total number of beacon chain slots has grown?","exampleUseCases":null,"resultDescription":"Returns a time series array of objects, each with a Unix timestamp ('t') and the cumulative slot height value ('v') representing the total number of slots ever included in the Ethereum 2.0 beacon chain at that point in time.","failureModes":["Missing required 'a' query parameter (asset) returns a 400 error","Invalid asset symbol (non-ETH value) rejected since only ETH is supported","Payment not included or insufficient USDC causes a 402 Payment Required response","Invalid format parameter value causes a format error","Rate limiting or upstream Glassnode data unavailability may cause 503 errors"],"whenToPreferThis":"Use this endpoint when you need authoritative, time-series data on Ethereum 2.0 beacon chain slot height from Glassnode, particularly for on-chain analytics, blockchain research, or monitoring beacon chain progression. Prefer this over general blockchain explorers when you need structured, programmatic access to historical slot height data with consistent formatting.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T07:06:18.148Z","isFirstParty":false}