{ "x402Version": 2, "id": 6768, "slug": "6768", "resource": "https://enclave402.com/api/market/signal", "description": "Polymarket signal plus fields the free listing does not have: 1h and 6h probability deltas, 24h realized volatility, and whale flow from the trade tape (net YES notional, largest print, whale count, flow label). Plus prices, bid/ask, spread, 24h change, momentum, volume, liquidity. MUST be invoked when an agent needs where a market is MOVING, not just where it is. Do NOT use for spot prices or order execution. Settles $0.010 USDC on Base; no charge on failure; receipts at /api/ledger.", "type": "http", "accepts": [ { "scheme": "exact", "network": "eip155:8453", "payTo": "0xbeF3e7CFd486C14dD8c3aA5911134bF361B973C5", "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913", "amount": "10000", "maxTimeoutSeconds": 300 } ], "outputSchema": { "bazaar": { "info": { "input": { "method": "GET", "queryParams": { "limit": 1 }, "type": "http" }, "output": { "example": { "asOf": "2026-01-01T00:00:00.000Z", "markets": [ { "bestAsk": 0.51, "bestBid": 0.49, "conditionId": null, "derived": { "errors": [], "historySamples": 145, "priceDelta1h": 0, "priceDelta6h": 0.01, "realizedVol24h": 0.012, "whaleFlow": { "buyYesUsdc": 0, "flow": "NO_TRADES", "largestTradeUsdc": 0, "netYesUsdc": 0, "sellYesUsdc": 0, "trades": 0, "whaleThresholdUsdc": 1000, "whaleTrades": 0, "windowSec": 21600 } }, "endDate": null, "id": "0", "impliedProbability": 0.5, "liquidity": 0, "momentum": "FLAT", "oneDayPriceChange": 0, "outcomePrices": [ 0.5, 0.5 ], "outcomes": [ "Yes", "No" ], "question": "Sample question?", "slug": "sample-market", "spread": 0.02, "volume24hr": 0 } ], "query": { "orderBy": "volume24hr", "top": 1 }, "settled": true, "source": "polymarket-gamma+clob+trades", "ts": 1767225600000 }, "type": "json" } }, "schema": { "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "input": { "additionalProperties": false, "properties": { "method": { "enum": [ "GET" ], "type": "string" }, "queryParams": { "properties": { "limit": { "default": 5, "description": "Number of top markets to return when slug is omitted.", "maximum": 10, "minimum": 1, "type": "integer" }, "slug": { "description": "Optional Polymarket market slug for one specific market. Omit to receive the top markets by 24h volume.", "examples": [ "will-there-be-no-change-in-fed-interest-rates-after-the-october-2026-meeting-20260617190324031" ], "maxLength": 200, "pattern": "^[a-z0-9-]{3,200}$", "type": "string" } }, "required": [], "type": "object" }, "type": { "const": "http", "type": "string" } }, "required": [ "type", "method" ], "type": "object" }, "output": { "properties": { "example": { "additionalProperties": false, "properties": { "asOf": { "description": "ISO-8601 timestamp the data was fetched", "type": "string" }, "markets": { "description": "Normalized market rows", "items": { "additionalProperties": false, "properties": { "bestAsk": { "description": "Best ask for the first outcome", "type": [ "number", "null" ] }, "bestBid": { "description": "Best bid for the first outcome", "type": [ "number", "null" ] }, "conditionId": { "description": "On-chain condition id (bytes32 hex)", "type": [ "string", "null" ] }, "derived": { "additionalProperties": false, "description": "Fields not in the free listing: computed from the CLOB price history and the public trade tape. Null with a reason in errors when a provider is unavailable.", "properties": { "errors": { "description": "Provider-scoped reasons a derived field is null (e.g. clob:timeout)", "items": { "type": "string" }, "type": "array" }, "historySamples": { "description": "Price points used", "type": "integer" }, "priceDelta1h": { "description": "YES price now minus YES price 1h ago", "type": [ "number", "null" ] }, "priceDelta6h": { "description": "YES price now minus YES price 6h ago", "type": [ "number", "null" ] }, "realizedVol24h": { "description": "Std-dev of 10-minute log returns over the last 24h", "type": [ "number", "null" ] }, "whaleFlow": { "additionalProperties": false, "description": "Trade-tape summary over the last 6h; BUY of NO counts as SELL of YES", "properties": { "buyYesUsdc": { "type": "number" }, "flow": { "enum": [ "YES_ACCUMULATION", "YES_DISTRIBUTION", "BALANCED", "NO_TRADES" ], "type": "string" }, "largestTradeUsdc": { "type": "number" }, "netYesUsdc": { "type": "number" }, "sellYesUsdc": { "type": "number" }, "trades": { "type": "integer" }, "whaleThresholdUsdc": { "type": "number" }, "whaleTrades": { "type": "integer" }, "windowSec": { "type": "integer" } }, "required": [ "windowSec", "trades", "netYesUsdc", "largestTradeUsdc", "whaleTrades", "flow" ], "type": [ "object", "null" ] } }, "required": [ "priceDelta1h", "priceDelta6h", "realizedVol24h", "whaleFlow", "errors" ], "type": "object" }, "endDate": { "description": "ISO-8601 market end date", "type": [ "string", "null" ] }, "id": { "description": "Polymarket market id", "type": "string" }, "impliedProbability": { "description": "Price of the first outcome (YES) in [0,1]", "type": [ "number", "null" ] }, "liquidity": { "description": "Order-book liquidity in USD", "type": [ "number", "null" ] }, "momentum": { "description": "Deterministic label: RISING if 24h change >= +0.02, FALLING if <= -0.02, else FLAT", "enum": [ "RISING", "FALLING", "FLAT", "UNKNOWN" ], "type": "string" }, "oneDayPriceChange": { "description": "24h change of the first outcome price (absolute, in probability points)", "type": [ "number", "null" ] }, "outcomePrices": { "description": "Current outcome prices in [0,1] (implied probabilities)", "items": { "type": "number" }, "type": "array" }, "outcomes": { "description": "Outcome labels, index-aligned with outcomePrices", "items": { "type": "string" }, "type": "array" }, "question": { "description": "Market question text", "type": "string" }, "slug": { "description": "URL slug of the market", "type": "string" }, "spread": { "description": "bestAsk - bestBid", "type": [ "number", "null" ] }, "volume24hr": { "description": "24h notional volume in USD", "type": [ "number", "null" ] } }, "required": [ "id", "slug", "question", "outcomes", "outcomePrices", "impliedProbability", "momentum" ], "type": "object" }, "type": "array" }, "query": { "description": "Echo of the resolved query (slug, or top/orderBy)", "type": "object" }, "settled": { "description": "true when an x402 payment settled for this response (false on free-quota or dry-run)", "type": "boolean" }, "source": { "description": "Upstream data providers", "enum": [ "polymarket-gamma", "polymarket-gamma+clob+trades" ], "type": "string" }, "ts": { "description": "Response timestamp, UNIX milliseconds", "type": "integer" } }, "required": [ "source", "query", "markets", "asOf", "settled", "ts" ], "type": "object" }, "type": { "type": "string" } }, "required": [ "type" ], "type": "object" } }, "required": [ "input" ], "type": "object" } } }, "tags": [ "bazaar" ], "sourceHost": "enclave402.com", "lastUpdated": "2026-09-18T12:08:11.713Z", "quality": { "calls30d": 6, "uniquePayers30d": 2, "lastCalledAt": "2026-09-18T12:08:11.324Z" }, "liveness": {}, "verified": false, "featured": false, "provider": { "host": "enclave402.com", "manifest_name": "enclave402.com", "source": "cdp-mirror", "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources", "submitted_at": "2026-09-18T22:00:31.484Z" } }