{"uid":"cap_TODmEg8lxkt-zDrb-sd4w","slug":"coil-board-changes-14604ad5","name":"Coil Board Changes","description":"What CHANGED on the board since your last check — change detection for polling agents. Pass ?since=<hash from the FREE /api/board/state> for the deltas: names entering or leaving the READY pool, per-name trend, light, leadership and hold-band flips, and any regime or permission-ladder move per book (S&P 500, Nasdaq-100, macro). Poll the hash free, buy the diff only when it moves — an unchanged hash is answered free, never billed. Recomputes ~5 min in market hours. Research, not advice.","url":"https://coil.trade/api/board/diff","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","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_KCrfohVEPzkD2AHmKBRk4","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns only what changed on the market board since a previous state hash — delta detection for polling agents covering READY pool, trend, leadership, and regime shifts.","exampleAgentPrompt":"Check if anything has changed on the Coil market board since my last snapshot — use the hash I got from the free /api/board/state call and only pull the diff if something actually moved.","exampleUseCases":[{"title":"Alert on READY pool entries","prompt":"Every 5 minutes, check whether any new names have entered or left the READY pool on the Coil board since the last state hash, and notify me immediately if something changes."},{"title":"Catch regime or leadership flips","prompt":"I want to know if any regime or leadership flips happened in the S&P 500 or Nasdaq-100 books since my last board check — pull the diff using my previous state hash and summarize what moved."},{"title":"Efficient polling before full analysis","prompt":"Before I pull the full Coil board state and run my analysis, check if the board hash has changed since my last read — only give me the deltas if something is actually different, so I'm not wasting money on unchanged data."}],"resultDescription":"A diff object containing only what changed since the provided state hash: names entering or leaving the READY pool, per-name trend flips, light flips, leadership flips, hold-band flips, and regime or permission-ladder moves per book (S&P 500, Nasdaq-100, macro). An unchanged hash is answered free with no billing; a changed hash costs $0.01 USDC and returns the full delta set.","failureModes":["Missing or invalid 'since' hash returns an error or full state fallback","Stale hash older than retention window may not produce a valid diff","Network timeout during the ~5-minute recompute window may yield a temporarily stale diff","Payment failure (x402) results in a 402 response with no diff returned"],"whenToPreferThis":"Prefer this endpoint when you are polling the board repeatedly and want to avoid paying for redundant full-state reads. It is purpose-built for change-detection loops: check the free hash, only buy the diff when something moved. Use the full /api/board/state if you need the complete current state without a prior hash, or if you want to bootstrap your first snapshot.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:44:35.714Z","isFirstParty":false}