# Services from api.dripmetrics.ai on Zero

> api.dripmetrics.ai serves 52 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/api.dripmetrics.ai
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.dripmetrics.ai/health.json

## Services

- [DripMetrics Roll Spread](https://www.zero.xyz/c/api-dripmetrics-ai-a60c567b/llms.txt): $0.05/call via x402, rated 4.0/5 (1 review). Calculates the Roll spread proxy metric — an estimate of bid-ask spread derived from lagged price covariance — for a crypto trading pair on Binance or Coinbase over a 30m or 1h window.
- [DripMetrics VPIN (Volume-Synchronized Probability of Informed Trading)](https://www.zero.xyz/c/api-dripmetrics-ai-c7aab742/llms.txt): $0.05/call via x402. Computes VPIN, a measure of the probability of informed trading, for a specified crypto trading pair and exchange over a recent lookback window.
- [DripMetrics Kyle's Lambda](https://www.zero.xyz/c/api-dripmetrics-ai-eca05dc9/llms.txt): $0.05/call via x402. Calculates Kyle's Lambda price impact coefficient per unit of signed order flow for a crypto trading pair over a 30m or 1h window
- [DripMetrics BTC Options Expected-Move Consumption](https://www.zero.xyz/c/dripmetrics-btc-options-expected-move-consumption-4794263f/llms.txt): $0.05/call via x402. Returns the share of the nearest-expiry ATM straddle's implied move already consumed by realized BTC price movement over a chosen lookback window
- [DripMetrics BTC Options GEX (Gamma Exposure)](https://www.zero.xyz/c/dripmetrics-btc-options-gex-gamma-exposure-7c17d752/llms.txt): $0.05/call via x402. Returns the full strike-level gamma exposure profile, total net GEX, and gamma flip level for BTC options derived from the Deribit option chain
- [DripMetrics BTC Market Microstructure Summary](https://www.zero.xyz/c/dripmetrics-btc-market-microstructure-summary-f46eadbe/llms.txt): $0.25/call via x402. 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.
- [DripMetrics AI – Realized Volatility Metric](https://www.zero.xyz/c/dripmetrics-ai-realized-volatility-metric-4707b09e/llms.txt): $0.05/call via x402. Computes annualized realized volatility for a crypto trading pair over a recent lookback window using live trade data from Binance or Coinbase.
- [DripMetrics Kyle Lambda - Polymarket Price Impact Estimator](https://www.zero.xyz/c/api-dripmetrics-ai-f817d29f/llms.txt): $0.050000/call via x402. Estimates Kyle's Lambda (price impact per unit of signed notional flow) for a selected Polymarket YES or NO outcome over a specified time window
- [DripMetrics Polymarket VPIN Flow-Toxicity Scorer](https://www.zero.xyz/c/api-dripmetrics-ai-374fd031/llms.txt): $0.050000/call via x402. Computes a VPIN (Volume-synchronized Probability of Informed Trading) flow-toxicity score for a Polymarket prediction market by bucketing YES/NO trade pressure into equal-notional buckets over a requested time window.
- [DripMetrics BTC Crash Premium](https://www.zero.xyz/c/dripmetrics-btc-crash-premium-393f88cb/llms.txt): $0.05/call via x402. Returns BTC crash premium — the gap between Deribit 25-delta risk-reversal skew and realized downside-upside semivolatility asymmetry from DripMetrics' trade tape — as an annualized vol-point metric.
- [DripMetrics AI | Volatility-of-Volatility Metric](https://www.zero.xyz/c/dripmetrics-ai-volatility-of-volatility-metric-c014ca1d/llms.txt): $0.05/call via x402. Computes the volatility-of-volatility (vol-of-vol) for a crypto trading pair over a specified lookback window using real-time trade data from Binance or Coinbase.
- [DripMetrics Signed Dollar Volume](https://www.zero.xyz/c/dripmetrics-signed-dollar-volume-f263e0a3/llms.txt): $0.05/call via x402. Returns signed (buy minus sell) dollar volume for a crypto trading pair over a specified lookback window
- [DripMetrics AI Polymarket Wallet Novelty](https://www.zero.xyz/c/api-dripmetrics-ai-13eaca65/llms.txt): $0.050000/call via x402. Estimates what fraction of recent Polymarket market flow comes from wallets not seen in earlier API-visible trades for the same market
- [DripMetrics Polymarket Probability Shock](https://www.zero.xyz/c/api-dripmetrics-ai-a209ba42/llms.txt): $0.05/call via x402. Measures how large a recent Polymarket price move is relative to recent realized volatility, returning a normalized probability shock score for a given market token or slug.
- [DripMetrics Polymarket Leakage Score](https://www.zero.xyz/c/api-dripmetrics-ai-aef66c85/llms.txt): $0.05/call via x402. Measures information leakage and pre-news price movement in a Polymarket prediction market around an event anchor
- [DripMetrics AI – Average Trade Size](https://www.zero.xyz/c/dripmetrics-ai-average-trade-size-0f2aedae/llms.txt): $0.05/call via x402. Returns the average trade size (in base currency units) for a given trading pair on Binance or Coinbase over a rolling lookback window of 30m, 1h, 2h, or 3h.
- [DripMetrics Order Flow HHI](https://www.zero.xyz/c/api-dripmetrics-ai-efaba295/llms.txt): $0.05/call via x402. Computes the Herfindahl-Hirschman Index (HHI) of signed order flow concentration for a crypto trading pair over a specified lookback window
- [DripMetrics VRP (Variance Risk Premium) for BTC](https://www.zero.xyz/c/dripmetrics-vrp-variance-risk-premium-for-btc-b3ee7a9f/llms.txt): $0.05/call via x402. Returns the intraday variance risk premium for BTC by subtracting trade-level realized variance from the shortest-dated Deribit ATM implied variance over a chosen lookback window.
- [DripMetrics AI – BTC/USDT Order Book Micro-Price](https://www.zero.xyz/c/dripmetrics-ai-btc-usdt-order-book-micro-price-57f7aae2/llms.txt): $0.05/call via x402. Returns the order-book micro-price for BTCUSDT — an opposite-side-size-weighted mid-price computed fresh from Binance's live depth snapshot, providing a more accurate instantaneous fair-price estimate than the naive midpoint.
- [DripMetrics Trade Intensity](https://www.zero.xyz/c/dripmetrics-trade-intensity-4e130cd4/llms.txt): $0.05/call via x402. Returns trades-per-minute intensity metric for a crypto trading pair over a specified lookback window from Binance or Coinbase
- [DripMetrics VWAP Metric](https://www.zero.xyz/c/dripmetrics-vwap-metric-f8824268/llms.txt): $0.05/call via x402. Computes volume-weighted average price (VWAP) for a crypto trading pair over a specified lookback window from Binance or Coinbase trade data
- [DripMetrics AI Order Book Imbalance](https://www.zero.xyz/c/dripmetrics-ai-order-book-imbalance-6b1c8c8d/llms.txt): $0.05/call via x402. Computes real-time BTC/USDT order book imbalance from Binance's live depth snapshot, returning a normalized metric of buy vs. sell pressure across configurable depth levels.
- [DripMetrics Amihud Illiquidity Metric](https://www.zero.xyz/c/api-dripmetrics-ai-6f92e564/llms.txt): $0.05/call via x402. Computes Amihud illiquidity ratio (returns per unit of dollar volume) for a crypto trading pair over a specified lookback window
- [DripMetrics Large Trade Share](https://www.zero.xyz/c/dripmetrics-large-trade-share-8647dd48/llms.txt): $0.05/call via x402. Returns the share of traded volume attributable to large trades for a given crypto pair, exchange, and lookback window
- [DripMetrics Momentum Metric](https://www.zero.xyz/c/dripmetrics-momentum-metric-45c3ba64/llms.txt): $0.05/call via x402. Returns directional price momentum for a crypto trading pair over a specified lookback window (30m, 1h, 2h, or 3h) sourced from Binance or Coinbase trade data.
- [DripMetrics AI BTC/USDT Order Book Spread](https://www.zero.xyz/c/dripmetrics-ai-btc-usdt-order-book-spread-3bcae985/llms.txt): $0.05/call via x402. Returns the current bid-ask spread for BTCUSDT in basis points of mid price, computed fresh from Binance's public order book depth snapshot.
- [DripMetrics AI VWAP Deviation](https://www.zero.xyz/c/dripmetrics-ai-vwap-deviation-e1a0a70e/llms.txt): $0.05/call via x402. Computes the volume-weighted average price (VWAP) deviation for a crypto trading pair over a specified lookback window from Binance or Coinbase trade data.
- [DripMetrics Buy-Sell Volume Imbalance](https://www.zero.xyz/c/dripmetrics-buy-sell-volume-imbalance-8b198f28/llms.txt): $0.05/call via x402. Returns a normalized buy-vs-sell volume imbalance ratio for a crypto trading pair over a specified lookback window
- [DripMetrics CVD (Cumulative Volume Delta)](https://www.zero.xyz/c/api-dripmetrics-ai-8164afa8/llms.txt): $0.05/call via x402. Returns the cumulative volume delta (net buy minus sell volume) for a crypto trading pair over a specified lookback window from Binance or Coinbase.
- [DripMetrics Historical Volatility](https://www.zero.xyz/c/api-dripmetrics-ai-ee1c71f3/llms.txt): $0.05/call via x402. Computes annualized historical volatility for a crypto trading pair over a 30m or 1h lookback window using recent trade data from Binance or Coinbase.
- [DripMetrics AI Order Book Concentration](https://www.zero.xyz/c/dripmetrics-ai-order-book-concentration-01653df2/llms.txt): $0.1/call via x402. Computes a Herfindahl-index concentration metric for a crypto pair's order book, measuring how fragile or thin the top bid/ask levels are on Binance.
- [DripMetrics AI Order Book Snapshot](https://www.zero.xyz/c/dripmetrics-ai-order-book-snapshot-5f2b6a84/llms.txt): $0.25/call via x402. Fetches a fresh Binance order book snapshot and returns computed microstructure metrics including spread, micro-price, imbalance, depth-at-distance, concentration, and execution impact in a single call.
- [DripMetrics Reversal Metric](https://www.zero.xyz/c/dripmetrics-reversal-metric-67f0507e/llms.txt): $0.05/call via x402. Estimates short-horizon mean reversion potential for a crypto trading pair over a specified lookback window
- [DripMetrics AI – Polymarket Two-Sidedness](https://www.zero.xyz/c/dripmetrics-ai-polymarket-two-sidedness-42fb4b29/llms.txt): $0.05/call via x402. Computes a two-sidedness score for a Polymarket prediction market, measuring how balanced YES vs NO trading volume is over a given time window.
- [DripMetrics AI – Hyperliquid Beta Endpoint](https://www.zero.xyz/c/dripmetrics-ai-hyperliquid-beta-endpoint-4804b532/llms.txt): $0.05/call via x402. Computes beta coefficient of a Hyperliquid trading pair against a benchmark (e.g. SP500) using aligned 1-minute candle data over a specified window
- [DripMetrics AI Hyperliquid Vol-of-Vol](https://www.zero.xyz/c/dripmetrics-ai-hyperliquid-vol-of-vol-f408b240/llms.txt): $0.05/call via x402. Computes the volatility-of-volatility (vol-of-vol) for a Hyperliquid trading pair by analyzing rolling standard deviation of short-term realized volatility over a specified time window.
- [DripMetrics AI – Hyperliquid Drawdown Metric](https://www.zero.xyz/c/dripmetrics-ai-hyperliquid-drawdown-metric-945f7f96/llms.txt): $0.05/call via x402. Computes the maximum drawdown (peak-to-trough price decline) for a given crypto pair over a specified rolling window using Hyperliquid candle data.
- [DripMetrics AI – Downside Semi-Volatility](https://www.zero.xyz/c/dripmetrics-ai-downside-semi-volatility-9566f811/llms.txt): $0.05/call via x402. Computes the downside semi-volatility of a cryptocurrency trading pair over a recent lookback window using live trade data from Binance or Coinbase.
- [DripMetrics AI – Drawdown Metric](https://www.zero.xyz/c/dripmetrics-ai-drawdown-metric-3e1fa450/llms.txt): $0.05/call via x402. Computes the maximum price drawdown (peak-to-trough decline) for a crypto trading pair over a specified lookback window using real trade data from Binance or Coinbase.
- [DripMetrics AI Protocol Fee Yield](https://www.zero.xyz/c/dripmetrics-ai-protocol-fee-yield-8d831b1d/llms.txt): $0.05/call via x402. Computes annualized fee yield and revenue yield for a DeFi protocol over a specified time window using DefiLlama on-chain data.
- [DripMetrics Hyperliquid Momentum](https://www.zero.xyz/c/api-dripmetrics-ai-3a5ec59b/llms.txt): $0.05/call via x402. Returns the log-return momentum metric for a Hyperliquid perpetual market over a 30-minute or 1-hour window, derived from 1-minute public candle snapshots.
- [DripMetrics AI Historical Volatility](https://www.zero.xyz/c/api-dripmetrics-ai-68771f5c/llms.txt): $0.05/call via x402. Returns annualized realized volatility for a Hyperliquid market computed from 1-minute candle data over the latest 30-minute or 1-hour window
- [DripMetrics AI Beta Metrics Endpoint](https://www.zero.xyz/c/dripmetrics-ai-beta-metrics-endpoint-f5ef0cb2/llms.txt): $0.05/call via x402. Returns real-time crypto market microstructure metrics (e.g. beta) for a trading pair on Binance or Coinbase over a configurable lookback window
- [DripMetrics AI Hyperliquid Downside Semivolatility](https://www.zero.xyz/c/dripmetrics-ai-hyperliquid-downside-semivolatility-8fc46d2a/llms.txt): $0.05/call via x402. Computes downside semivolatility for a crypto pair on Hyperliquid using recent candle data over a specified window and interval
- [DripMetrics Polymarket Wallet Concentration](https://www.zero.xyz/c/api-dripmetrics-ai-b44481f3/llms.txt): $0.050000/call via x402. Measures whether recent trading flow in a Polymarket prediction market is dominated by a small set of wallets, returning a structured concentration metric.
- [DripMetrics Hyperliquid Realized Volatility](https://www.zero.xyz/c/api-dripmetrics-ai-ed5e1dde/llms.txt): $0.05/call via x402. Returns non-annualized realized volatility for a specified Hyperliquid market over a 30-minute or 1-hour window, derived from 1-minute candle snapshots.
- [DripMetrics AI Polymarket Flow Imbalance](https://www.zero.xyz/c/dripmetrics-ai-polymarket-flow-imbalance-f370ed6d/llms.txt): $0.05/call via x402. Computes the buy/sell flow imbalance metric for a Polymarket prediction market over a configurable time window, indicating directional trading pressure.
- [DripMetrics AI – Hyperliquid Reversal Metric](https://www.zero.xyz/c/dripmetrics-ai-hyperliquid-reversal-metric-b998d414/llms.txt): $0.05/call via x402. Computes a price-reversal signal for a given crypto pair on Hyperliquid, decomposing it into momentum and simple-reversal components over a configurable candle window.
- [DripMetrics AI DEX Efficiency Metrics](https://www.zero.xyz/c/dripmetrics-ai-dex-efficiency-metrics-e7055cb3/llms.txt): $0.05/call via x402. Computes on-chain DEX efficiency metrics (annualized turnover, volume-to-TVL ratio) for a given chain or protocol over a configurable time window using DefiLlama data.
- [DripMetrics AI Rolling Correlation](https://www.zero.xyz/c/dripmetrics-ai-rolling-correlation-f3ad382f/llms.txt): $0.05/call via x402. Computes the rolling price-volume or inter-asset correlation for a crypto trading pair over a specified lookback window using recent trade data from Binance or Coinbase.
- [DripMetrics AI – On-Chain TVL Momentum](https://www.zero.xyz/c/dripmetrics-ai-on-chain-tvl-momentum-d55064e4/llms.txt): $0.05/call via x402. Computes TVL (Total Value Locked) momentum metrics for a blockchain or DeFi protocol over a specified time window, sourced from DefiLlama on-chain data.
- [DripMetrics AI Stablecoin Flow Metrics](https://www.zero.xyz/c/dripmetrics-ai-stablecoin-flow-metrics-96d5f383/llms.txt): $0.05/call via x402. Returns on-chain stablecoin supply flow metrics (net change, percent change, direction) for a specified blockchain and time window, sourced from DefiLlama.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

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