Unnamed service
GET api.dripmetrics.ai/metrics/vpin
Why an agent can trust this route.
Sonar evidence is advisory. Paid delivery is shown as verified only when paid probes are available; otherwise route estimates use the unpaid handshake as a clearly labeled proxy.
Observed outcomes
DripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. VPIN measures volume-synchronized order-flow imbalance (an adverse-selection proxy, not a probability); see excessVpin. Discovery examples use the latest 30m window.
Resource: api.dripmetrics.ai/metrics/vpin
Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0xc9b70D8d342609437bc87Ec3C877911a306d3e6A
Payment methods: — · Last validation: 2026-09-13 22:56:09.044+00
{
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"pair",
"exchange",
"window"
],
"properties": {
"pair": {
"type": "string",
"description": "Exchange-native trading pair symbol such as BTCUSDT, ETH-USD, BTC, or xyz:TSLA."
},
"window": {
"enum": [
"30m",
"1h",
"2h",
"3h"
],
"type": "string",
"description": "Lookback window. Hyperliquid supports 30m and 1h; 2h and 3h are currently BTCUSDT/BTC-USD only."
},
"exchange": {
"enum": [
"binance",
"coinbase",
"hyperliquid"
],
"type": "string",
"description": "Exchange adapter to source recent trades from."
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"metric",
"pair",
"exchange",
"window",
"value",
"computedAt",
"tradeCount",
"firstTradeTime",
"lastTradeTime",
"coverage"
],
"properties": {
"pair": {
"type": "string"
},
"value": {
"type": "number"
},
"metric": {
"type": "string"
},
"window": {
"enum": [
"30m",
"1h",
"2h",
"3h"
],
"type": "string"
},
"coverage": {
"type": "object",
"required": [
"requestedWindowMinutes",
"effectiveWindowMinutes",
"coverageRatio",
"partialData",
"completeFetch",
"errorMessage"
],
"properties": {
"partialData": {
"type": "boolean"
},
"errorMessage": {
"type": [
"string",
"null"
]
},
"completeFetch": {
"type": "boolean"
},
"coverageRatio": {
"type": "number",
"maximum": 1,
"minimum": 0
},
"effectiveWindowMinutes": {
"type": "number",
"minimum": 0
},
"requestedWindowMinutes": {
"type": "number",
"minimum": 0
}
},
"additionalProperties": false
},
"exchange": {
"enum": [
"binance",
"coinbase",
"hyperliquid"
],
"type": "string"
},
"components": {
"type": "object",
"required": [
"buckets",
"bucketSize",
"meanImbalance",
"totalVolume",
"tradeCount",
"minimumTradeCount",
"targetBuckets",
"buyTrades",
"sellTrades",
"buyVolume",
"sellVolume",
"oneSidedBuckets",
"minimumTradeContributionsPerBucket",
"meanTradeContributionsPerBucket",
"estimatedNullVpin",
"excessVpin"
],
"properties": {
"buckets": {
"type": "integer"
},
"buyTrades": {
"type": "integer"
},
"buyVolume": {
"type": "number"
},
"bucketSize": {
"type": "number"
},
"excessVpin": {
"type": "number",
"description": "Raw VPIN minus estimatedNullVpin; this signed value is not clamped at zero. Raw VPIN is sample-size dependent and comparable only within the same market and window, so use excessVpin and the bucket-density fields for broader comparisons."
},
"sellTrades": {
"type": "integer"
},
"sellVolume": {
"type": "number"
},
"tradeCount": {
"type": "integer"
},
"totalVolume": {
"type": "number"
},
"meanImbalance": {
"type": "number"
},
"targetBuckets": {
"type": "integer"
},
"oneSidedBuckets": {
"type": "integer"
},
"estimatedNullVpin": {
"type": "number",
"description": "Approximate finite-sample VPIN baseline under independent, equally likely buy/sell signs."
},
"minimumTradeCount": {
"type": "integer"
},
"meanTradeContributionsPerBucket": {
"type": "number"
},
"minimumTradeContributionsPerBucket": {
"type": "integer"
}
},
"additionalProperties": false
},
"computedAt": {
"type": "string",
"format": "date-time"
},
"tradeCount": {
"type": "integer",
"minimum": 1
},
"lastTradeTime": {
"type": "string",
"format": "date-time"
},
"firstTradeTime": {
"type": "string",
"format": "date-time"
},
"benchmarkCoverage": {
"type": "object",
"required": [
"requestedWindowMinutes",
"effectiveWindowMinutes",
"coverageRatio",
"partialData",
"completeFetch",
"errorMessage"
],
"properties": {
"partialData": {
"type": "boolean"
},
"errorMessage": {
"type": [
"string",
"null"
]
},
"completeFetch": {
"type": "boolean"
},
"coverageRatio": {
"type": "number",
"maximum": 1,
"minimum": 0
},
"effectiveWindowMinutes": {
"type": "number",
"minimum": 0
},
"requestedWindowMinutes": {
"type": "number",
"minimum": 0
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
},
"paymentRequirements": [
{
"raw": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc9b70D8d342609437bc87Ec3C877911a306d3e6A",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0xc9b70D8d342609437bc87Ec3C877911a306d3e6A",
"scheme": "exact",
"network": "eip155:8453",
"amountAtomic": "50000"
}
]
}Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.