{"uid":"cap_HVFssTSmEY15hiyfGOnAL","slug":"solmachina-sgp-checkpoint-solana-epoch-progress-slot-timing-0d0c8764","name":"SolMachina SGP Checkpoint — Solana Epoch Progress & Slot Timing","description":"Before an AI agent executes on Solana, it asks SolMachina: risk + a decision (EXECUTE/REVIEW/REJECT) + an SMRI score + a signed receipt, paid per call over x402 in USDC. Trust-first — cites every source, says 'unknown' over guessing. No account, no API key.","url":"https://api.solmachina.com/v1/sgp-checkpoint","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"n":{"type":"integer","description":"How many most-recent series points to include in `series.recent`, 1-200 (default 20)."}}},"responseSchema":{"type":"object","properties":{"latest":{"type":"object","properties":{"epoch":{"type":"integer"},"slotIndex":{"type":"integer"},"progressPct":{"type":"number"},"slotsInEpoch":{"type":"integer"}}},"series":{"type":"object","properties":{"count":{"type":"integer"},"lastTransition":{"type":"object","properties":{"toEpoch":{"type":"integer"},"fromEpoch":{"type":"integer"}}}}},"measured":{"type":"object","properties":{"slotMs":{"type":"number"},"etaEpochEndIso":{"type":"string"},"baselineSpanHours":{"type":"number"}}}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_m5eqOsztw3EEW4HjQLh05","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns real-time Solana epoch progress, slot index, slot timing metrics, and ETA to epoch end for the current and recent epochs.","exampleAgentPrompt":"What's the current Solana epoch progress — how far along are we, what's the estimated end time, and can you include the last 30 series data points for context?","exampleUseCases":[{"title":"Epoch end timing for DeFi automation","prompt":"I need to know when the current Solana epoch ends — give me the ETA in ISO format and the current slot progress percentage so I can time my staking action."},{"title":"Slot speed health check","prompt":"What's the average slot duration in milliseconds on Solana right now, and what's the baseline span being measured over?"},{"title":"Epoch transition history review","prompt":"Pull me the last 50 series points from SolMachina's epoch checkpoint so I can see recent epoch transitions and track when the network crossed from one epoch to the next."}],"resultDescription":"Returns a structured JSON object with three sections: (1) 'latest' — current epoch number, slot index within the epoch, progress as a percentage, and total slots in epoch; (2) 'series' — count of data points and the most recent epoch transition (from/to epoch numbers); (3) 'measured' — average slot duration in milliseconds, ISO-formatted ETA for epoch end, and the baseline measurement window in hours.","failureModes":["Solana RPC node unavailability causing stale or missing data","Invalid 'n' parameter (out of 1-200 range) resulting in a 400 error","Payment failure via x402 if USDC balance is insufficient","Network latency causing delayed epoch progress readings"],"whenToPreferThis":"Use this endpoint when you need real-time Solana epoch timing data — specifically epoch progress percentage, slot duration metrics, or estimated epoch end time — without requiring an API key or account. Prefer this over generic Solana RPC calls when you want pre-computed, source-cited epoch intelligence with historical series context, paid per-call via x402 USDC.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:41:36.488Z","isFirstParty":false}