Index onlineMerchant portal
Api Endpoint

quotient-api-gateway.onrender.com

Use this to browse every prediction market Quotient tracks across Polymarket International, Polymarket US, Kalshi, and HL Outcomes, with venue odds and quote provenance, available volume, resolution date, and forecast recency. Polymarket International and Kalshi fail closed when live pricing is unavailable; other venues label graph snapshots stale. Filter by venue or topic; the complete covered catalog returns in one response.

Open interactive test console

Offering

Provider
quotient-api-gateway.onrender.com
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Prediction Markets
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://quotient-api-gateway.onrender.com/api/v1/markets
MIME type
application/json
First seen
2026-10-16T01:50:14.534Z
Last seen
Tags
None supplied

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.005 USDC
Atomic price: 5000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "payTo": "0xC3d01FD2F79d4c57aD106AB8ecc12a5dE24F97cB"
  }
]

Observed health

Status
Healthy
Latest latency
263 ms
Average latency
229 ms
HTTP status
402
Last checked
Reachability
100% over 2 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "topic": {
          "type": "string"
        },
        "league": {
          "type": "string",
          "enum": [
            "atp",
            "wta",
            "cfb",
            "nfl",
            "mlb",
            "wnba",
            "nba",
            "nhl",
            "mls",
            "epl",
            "pga",
            "dpwt",
            "lpga",
            "f1"
          ]
        },
        "venue": {
          "type": "string",
          "enum": [
            "polymarket",
            "polymarket_us",
            "kalshi",
            "hl_outcomes"
          ],
          "description": "Prediction-market venue key: polymarket (Polymarket International), polymarket_us (Polymarket US), kalshi, or hl_outcomes (HL Outcomes, Hyperliquid's outcome markets; covered sports game-winner markets only). HL Outcomes marketKeys contain # (hl_outcomes:#<outcome id>); percent-encode it as %23 in paths and query strings."
        },
        "max_forecast_age": {
          "type": "integer",
          "minimum": 1,
          "default": 48
        },
        "changed_within": {
          "type": "integer",
          "minimum": 1,
          "maximum": 168
        },
        "sort": {
          "type": "string",
          "enum": [
            "updated_desc",
            "volume_desc",
            "signal_count_desc",
            "quality"
          ]
        }
      },
      "additionalProperties": false
    }
  },
  "required": [
    "type",
    "method",
    "queryParams"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "additionalProperties": false,
          "properties": {
            "changed_within": {
              "maximum": 168,
              "minimum": 1,
              "type": "integer"
            },
            "league": {
              "enum": [
                "atp",
                "wta",
                "cfb",
                "nfl",
                "mlb",
                "wnba",
                "nba",
                "nhl",
                "mls",
                "epl",
                "pga",
                "dpwt",
                "lpga",
                "f1"
              ],
              "type": "string"
            },
            "max_forecast_age": {
              "default": 48,
              "minimum": 1,
              "type": "integer"
            },
            "sort": {
              "enum": [
                "updated_desc",
                "volume_desc",
                "signal_count_desc",
                "quality"
              ],
              "type": "string"
            },
            "topic": {
              "type": "string"
            },
            "venue": {
              "description": "Prediction-market venue key: polymarket (Polymarket International), polymarket_us (Polymarket US), kalshi, or hl_outcomes (HL Outcomes, Hyperliquid's outcome markets; covered sports game-winner markets only). HL Outcomes marketKeys contain # (hl_outcomes:#<outcome id>); percent-encode it as %23 in paths and query strings.",
              "enum": [
                "polymarket",
                "polymarket_us",
                "kalshi",
                "hl_outcomes"
              ],
              "type": "string"
            }
          },
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "queryParams"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input",
    "output"
  ],
  "type": "object"
}