# DripMetrics BTC Market Microstructure Summary > DripMetrics BTC Market Microstructure Summary is a paid API for AI agents from api.dripmetrics.ai, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-16). Returns deterministic BTC market microstructure signals (order flow, VPIN toxicity, Kyle-lambda liquidity, realized vol, dealer gamma, variance risk premium) plus an AI-written narrative explanation for a given lookback window. ## Facts - Endpoint: GET https://api.dripmetrics.ai/market/summary - Price: $0.25/call - Payment: x402 - Status: unknown - Last checked: 2026-09-16 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/dripmetrics-btc-market-microstructure-summary-f46eadbe - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mvBqmVm2gokdTfCB4AV4H Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently. ## How to call it through Zero Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`): ```sh zero fetch --capability dripmetrics-btc-market-microstructure-summary-f46eadbe ``` Example prompt: Pull the BTC microstructure summary from DripMetrics for the last 1-hour window — I want to see order flow, flow toxicity, dealer gamma, and the AI explanation of current market conditions. ## When to prefer this Use this endpoint when you need a fast, self-contained BTC market microstructure read combining both trade tape signals and options chain data in a single call with an AI narrative. Prefer over raw exchange data feeds when you need pre-computed, labeled signals (VPIN, Kyle-lambda, dealer gamma) without building your own analytics pipeline. Best for agents that need a structured, actionable microstructure snapshot with plain-English explanation rather than raw tick data. ## Known failure modes - Insufficient trade tape data for the requested window returns null signals or reduced confidence - Invalid pair value (non-BTC) returns a validation error - Invalid window value returns a 400-class error - Payment failure (x402) returns 402 Payment Required with no data - API unavailability returns 5xx error - Deribit chain data lag may result in stale options-derived metrics ## How this service works DripMetricsAI (https://dripmetrics.ai/) BTC market summary: one x402 call returns deterministic microstructure signals and metrics (including raw, baseline, and excess VPIN) computed from the live trade tape and Deribit chain, plus a concise AI-written explanation. Hedged historical tendencies only - no price targets or trade recommendations. ## Output A structured JSON object containing: labeled signals (orderFlow, flowToxicity, liquidity, volatility, priceTrend, activity, dealerGamma, volRiskPremium each as human-readable enums), raw numeric metrics, the last BTC price, a confidence score, an AI-written narrative summary of microstructure conditions, the model used for the summary, a disclaimer, sample size, coverage metadata, and the data source object. All signals are computed from the live trade tape and Deribit options chain. ## Request schema (JSON Schema) ```json { "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": [], "properties": { "pair": { "enum": [ "BTC", "BTCUSDT", "BTC-USD" ], "type": "string", "description": "BTC-only in this phase. Optional; defaults to BTC." }, "window": { "enum": [ "30m", "1h", "2h", "3h" ], "type": "string", "description": "Lookback window for the trade-tape signals. Defaults to 30m." } }, "additionalProperties": false } }, "additionalProperties": false }, "output": { "type": "object", "required": [ "type" ], "properties": { "type": { "type": "string" }, "example": { "type": "object", "required": [ "pair", "window", "asOf", "lastPrice", "confidence", "signals", "metrics", "summary", "summaryModel", "disclaimer", "sampleSize", "coverage", "source" ], "properties": { "asOf": { "type": "string", "format": "date-time" }, "pair": { "type": "string", "const": "BTC" }, "source": { "type": "object" }, "window": { "enum": [ "30m", "1h", "2h", "3h" ], "type": "string" }, "metrics": { "type": "object", "additionalProperties": { "type": [ "number", "null" ] } }, "signals": { "type": "object", "required": [ "orderFlow", "flowToxicity", "liquidity", "volatility", "priceTrend", "activity", "largeTraderShare", "dealerGamma", "volRiskPremium" ], "properties": { "activity": { "anyOf": [ { "enum": [ "quiet", "normal", "busy" ], "type": "string" }, { "type": "null" } ] }, "liquid … (truncated) ``` ## Response schema (JSON Schema) ```json { "type": "json", "example": { "asOf": "2026-07-15T14:00:00.000Z", "pair": "BTC", "source": { "chain": "https://www.deribit.com/api/v2/public/get_book_summary_by_currency?currency=BTC&kind=option", "index": "https://www.deribit.com/api/v2/public/get_index_price?index_name=btc_usd", "trades": "DripMetrics BTC trade cache", "summary": "Claude (Anthropic), constrained to the deterministic signals in this payload" }, "window": "30m", "metrics": { "vpin": 0.38, "cvdBase": -212.4, "kyleLambda": 2.47191e-7, "vrpVolPoints": 0.062, "gammaFlipLevel": 104800.5, "largeTradeShare": 0.22, "tradesPerMinute": 812.4, "buySellImbalance": -0.14, "gexNetUsdPer1Pct": 182000000, "momentumLogReturn": -0.0021, "realizedVolAnnualized": 0.52, "kyleLambdaDollarsPer1Bp": 418387.7 }, "signals": { "activity": "busy", "liquidity": "normal", "orderFlow": "sell-leaning", "priceTrend": "drifting-lower", "volatility": "normal", "dealerGamma": "dampening", "flowToxicity": "elevated", "volRiskPremium": "options-rich", "largeTraderShare": "typical" }, "summary": "BTC order flow over the last 30 minutes is modestly sell-side, with cumulative volume delta around -212 BTC and elevated VPIN pointing to a meaningful informed component in the selling — a configuration historically associated with continued short-term pressure. Liquidity remains normal at roughly $418k of flow per basis point, so the selling is being absorbed without outsized impact. The notable tension is between the tape and the options market: positive dealer gamma tends to dampen moves, and implied volatility trades rich to realized, so options are pricing more movement than the tape is delivering. A microstructure-aware trader would watch whether elevated VPIN persists as price approaches the gamma flip level near 104,800.", "coverage": { "partialData": false, "errorMessage": null, "completeFetch": true, "coverageRatio": 1, "effectiveWindowMinutes": 30, "requestedWindowMinutes": 30 }, "lastPrice": 108050.2, "confidence": 0.94, "disclaimer": "Informational description of observed market conditions and their historical tendencies; not investment advice or a trade recommendation.", "sampleSize": { "trades": 24310, "optionsInstruments": 612 }, "summaryModel": "claude-opus-4-8" } } ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dripmetrics-btc-market-microstructure-summary-f46eadbe/health.json - [Zero catalog index](https://www.zero.xyz/llms.txt) - [Other services from api.dripmetrics.ai](https://www.zero.xyz/host/api.dripmetrics.ai/llms.txt)