{"uid":"cap_ox3XUhrsOKh4Ekw8usWOw","slug":"kraken-crypto-signals-history-x402-api-e75a5a9f","name":"Kraken Crypto Signals History - x402 API","description":"Historical revealed signal snapshots (commit-reveal hash chain): past BUY/SELL/HOLD + confidence across major pairs, each with its verifiable hash. Bulk pay-per-call data for AI agents (USDC on Base).","url":"https://signals.nsgoods.org/history","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"required":{"type":"string"},"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"count":1,"history":[{"h":"d9ed7d97...","ts":"2026-06-10T18:00:00+00:00","seq":12,"prev":"1a9521f9...","signals":[{"pair":"BTC/USD","signal":"BUY","confidence":0.62}]}],"generated_at":"2026-06-13T20:00:00+00:00"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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_0yC-S5NMRX7A0f6nRcFaV","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 historical BUY/SELL/HOLD trading signals with confidence scores for crypto pairs, paid per-call via x402 on Base.","exampleAgentPrompt":"Show me the historical BUY/SELL/HOLD trading signals for BTC/USD — I want to see past signals with their confidence scores so I can review the recent market-state history.","exampleUseCases":null,"resultDescription":"Returns a JSON object containing a count of records, a list of historical signal entries each with a hash, timestamp, sequence number, previous hash reference, and an array of signals per trading pair (including pair name, signal direction BUY/SELL/HOLD, and confidence score), plus a generated_at timestamp.","failureModes":["402 Payment Required if x402 payment on Base is not included or fails","No history returned if no signals have been generated yet","Malformed response if payment is accepted but upstream Kraken data is unavailable","Rate limiting or access denial if payment is invalid or insufficient (0.05 USDC per call required)","Empty history array if the requested time range has no signals"],"whenToPreferThis":"Choose this endpoint when you need a tamper-evident, chained historical log of crypto market-state signals (BUY/SELL/HOLD) with confidence scores, especially for backtesting, auditing signal history, or reviewing past trading recommendations. Prefer this over real-time signal endpoints when historical context and sequence integrity (via hash chaining) are important.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:39:52.579Z","isFirstParty":false}