Roundhouse

api.dripmetrics.ai

DripMetricsAI (https://dripmetrics.ai/) provides on-demand prediction market flow and risk diagnostics for Polymarket markets. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. VPIN estimates a Polymarket flow-toxicity score by bucketing inferred YES-versus-NO pressure into equal-notional buckets over the requested window.

DataLiveeip155:8453Exactvia cdp
https://api.dripmetrics.ai/polymarket/vpin
Settlements · 30d
200↓ 31%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$144.71
Verified settled volume
2,592 settlements proven x402 by their on-chain EIP-3009 marker.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
7
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-06-09 04:31Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xc9b70D8d342609437bc87Ec3C877911a306d3e6A

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.05USDC≈ $0.05 USD
on Base · exact scheme

Pay 0.05 USDC on Base to 0xc9b7…d3e6A. The signed payment is good for 5 minutes.

Paid to
0xc9b7…d3e6A
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
50000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xc9b70D8d342609437bc87Ec3C877911a306d3e6A",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "slug": "fed-decision-in-october",
          "limit": 500,
          "windowMinutes": 60
        }
      },
      "output": {
        "type": "json",
        "example": {
          "slug": "fed-decision-in-october",
          "value": 0.92349,
          "metric": "vpin",
          "source": {
            "market": "https://gamma-api.polymarket.com/markets/slug/fed-decision-in-october",
            "trades": "https://data-api.polymarket.com/trades"
          },
          "window": {
            "windowMinutes": 60
          },
          "components": {
            "note": "Polymarket VPIN-style score using equal-notional buckets of inferred YES/NO pressure.",
            "vpin": 0.92349,
            "buckets": 10,
            "bucketSize": 14.9,
            "tradeCount": 4,
            "totalVolume": 149,
            "meanImbalance": 13.76,
            "configuredBuckets": 10
          },
          "computedAt": "2026-05-25T14:00:00.000Z",
          "sampleSize": {
            "trades": 4,
            "scannedTrades": 4
          },
          "conditionId": "0xdd22472e552920b8438158ea7238bfadfa4f736aa4cee91a6b86c39ead110917"
        }
      }
    },
    "schema": {
      "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",
              "anyOf": [
                {
                  "required": [
                    "conditionId"
                  ]
                },
                {
                  "required": [
                    "slug"
                  ]
                }
              ],
              "required": [],
              "properties": {
                "slug": {
                  "type": "string",
                  "description": "Polymarket market or event slug for human-readable market selection. Multi-market event slugs may require conditionId to disambiguate."
                },
                "endTs": {
                  "type": "integer",
                  "description": "Optional unix timestamp upper bound."
                },
                "limit": {
                  "type": "integer",
                  "maximum": 5000,
                  "minimum": 1,
                  "description": "Maximum number of trades to evaluate."
                },
                "newsTs": {
                  "type": "integer",
                  "description": "Optional explicit event timestamp for leakage scoring. If omitted, the metric uses the midpoint of the effective analysis window."
                },
                "assetId": {
                  "type": "string",
                  "description": "Alias for tokenId on price-history-based endpoints."
                },
                "outcome": {
                  "enum": [
                    "YES",
                    "NO"
                  ],
                  "type": "string",
                  "description": "Required for token-side Polymarket diagnostics when the selected YES or NO side must be interpreted."
                },
                "startTs": {
                  "type": "integer",
                  "description": "Optional unix timestamp lower bound."
                },
                "tokenId": {
                  "type": "string",
                  "description": "Polymarket token / asset ID for orderbook and price-history endpoints."
                },
                "conditionId": {
                  "type": "string",
                  "description": "Polymarket condition ID for trade-based metrics."
                },
                "windowMinutes": {
                  "type": "integer",
                  "minimum": 1,
                  "description": "Lookback window in minutes."
                },
                "lookbackMinutes": {
                  "type": "integer",
                  "minimum": 1,
                  "description": "Historical lookback used for probability shock normalization."
                }
              },
              "additionalProperties": false
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "required": [
                "metric",
                "window",
                "value",
                "components",
                "sampleSize",
                "source",
                "computedAt"
              ],
              "properties": {
                "slug": {
                  "type": "string"
                },
                "value": {
                  "type": [
                    "number",
                    "null"
                  ]
                },
                "metric": {
                  "type": "string"
                },
                "source": {
                  "type": "object"
                },
                "window": {
                  "type": "object"
                },
                "assetId": {
                  "type": "string"
                },
                "outcome": {
                  "type": "string"
                },
                "tokenId": {
                  "type": "string"
                },
                "components": {
                  "type": "object"
                },
                "computedAt": {
                  "type": "string",
                  "format": "date-time"
                },
                "sampleSize": {
                  "type": "object"
                },
                "conditionId": {
                  "type": "string"
                }
              },
              "additionalProperties": false
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-06-09 04:31Z
Last indexed by Roundhouse
2026-06-11 02:40Z
Last enriched (probe, favicon, geo)
2026-09-21 13:15Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 400
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service api.dripmetrics.ai and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=api.dripmetrics.ai'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://api.dripmetrics.ai/polymarket/vpin, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.