Market Data · x402 · early usage

Live probability: Who controls the Senate after the next election

by x402-factory.com · discovered, not yet claimed by its owner · updated 2026-10-01

30d calls2

30d payers2

MethodGET

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Live probability: Who controls the Senate after the next election? — Stable evergreen URL for a recurring question: Who controls the Senate after the next election? Auto-resolves to the current market instance and rolls forward on resolution, so the answer is always about the next occurrence. Response adds current_slug and rolls_to_next_at to the standard probability shape.

Tags: probability · prediction-market · evergreen · senate-control-next-election · bazaar

Call contract

Method: GET
Input: query parameters
Output: json
Last paid call: 2026-10-01

Input example from Bazaar metadata

{}

Output example

{
  "data": {
    "category": "politics",
    "current_slug": "democrats-win-senate-midterms-2026-11",
    "divergence": 0.0174,
    "last_move_1h": -0.0021,
    "per_venue": [
      {
        "implied_p": 0.3065,
        "liquidity_score": 0.9,
        "market_id": "KXDEMOCRATSWINSE",
        "venue": "kalshi",
        "volume_24h_usd": 138200.6
      },
      {
        "implied_p": 0.2891,
        "liquidity_score": 0.903,
        "market_id": "democrats-win-senate-midterms-2026-11",
        "venue": "polymarket",
        "volume_24h_usd": 147565.97
      }
    ],
    "probability": 0.2976,
    "question": "Will Democrats win Senate control in the 2026 midterms?",
    "resolution_criteria_summary": "Resolves YES if Democrats (incl. caucusing independents) hold 51+ seats.",
    "resolution_date": "2026-11-04",
    "rolls_to_next_at": "2026-11-04",
    "slug": "democrats-win-senate-midterms-2026-11",
    "topic": "senate-control-next-election",
    "topic_question": "Who controls the Senate after the next election?"
  },
  "meta": {
    "data_mode": "live",
    "docs": "https://x402-factory.com/docs/probability.evergreen.senate-control-next-election",
    "endpoint": "/v1/evergreen/senate-control-next-election",
    "freshness": "realtime",
    "generated_at": "2026-09-29T05:40:59.288Z",
    "request_id": "req_00000000",
    "sources": [
      "kalshi",
      "polymarket"
    ],
    "version": "1.0.0"
  }
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/29905.json for the price and payment options.
Pay. Call GET https://x402-factory.com/v1/evergreen/senate-control-next-election. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.02 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base
Demand: 2 calls · 2 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.02	0xCc42Ed39a06b6cF3f484307eF76B88Bf56Fb305f	120s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xCc42Ed39a06b6cF3f484307eF76B88Bf56Fb305f",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "20000",
    "amountUsd": 0.02,
    "maxTimeoutSeconds": 120
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "data": {
          "additionalProperties": false,
          "properties": {
            "category": {
              "type": "string"
            },
            "current_slug": {
              "type": "string"
            },
            "divergence": {
              "maximum": 1,
              "minimum": 0,
              "type": "number"
            },
            "last_move_1h": {
              "type": "number"
            },
            "per_venue": {
              "items": {
                "additionalProperties": false,
                "properties": {
                  "implied_p": {
                    "maximum": 1,
                    "minimum": 0,
                    "type": "number"
                  },
                  "liquidity_score": {
                    "maximum": 1,
                    "minimum": 0,
                    "type": "number"
                  },
                  "market_id": {
                    "type": "string"
                  },
                  "venue": {
                    "enum": [
                      "kalshi",
                      "polymarket"
                    ],
                    "type": "string"
                  },
                  "volume_24h_usd": {
                    "type": "number"
                  }
                },
                "required": [
                  "venue",
                  "market_id",
                  "implied_p",
                  "volume_24h_usd",
                  "liquidity_score"
                ],
                "type": "object"
              },
              "type": "array"
            },
            "probability": {
              "maximum": 1,
              "minimum": 0,
              "type": "number"
            },
            "question": {
              "type": "string"
            },
            "resolution_criteria_summary": {
              "type": "string"
            },
            "resolution_date": {
              "type": "string"
            },
            "rolls_to_next_at": {
              "type": "string"
            },
            "slug": {
              "type": "string"
            },
            "topic": {
              "type": "string"
            },
            "topic_question": {
              "type": "string"
            }
          },
          "required": [
            "slug",
            "question",
            "probability",
            "per_venue",
            "divergence",
            "category",
            "resolution_date",
            "resolution_criteria_summary",
            "last_move_1h",
            "topic",
            "topic_question",
            "current_slug",
            "rolls_to_next_at"
          ],
          "type": "object"
        },
        "meta": {
          "type": "object"
        }
      },
      "required": [
        "data",
        "meta"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {
    "data": {
      "category": "string",
      "current_slug": "string",
      "divergence": 0,
      "last_move_1h": 0,
      "per_venue": [
        {
          "implied_p": 0,
          "liquidity_score": 0,
          "market_id": "string",
          "venue": "kalshi",
          "volume_24h_usd": 0
        }
      ],
      "probability": 0,
      "question": "string",
      "resolution_criteria_summary": "string",
      "resolution_date": "string",
      "rolls_to_next_at": "string",
      "slug": "string",
      "topic": "string",
      "topic_question": "string"
    },
    "meta": {}
  },
  "type": "string"
}

Examples

curl

curl -X GET 'https://x402-factory.com/v1/evergreen/senate-control-next-election'
# -> 402 Payment Required; read PAYMENT-REQUIRED
# retry the identical request with PAYMENT-SIGNATURE

JavaScript

const res = await fetch("https://x402-factory.com/v1/evergreen/senate-control-next-election", {
  "method": "GET"
});
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.request("GET", "https://x402-factory.com/v1/evergreen/senate-control-next-election")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: x402-factory.com
Endpoint: https://x402-factory.com/v1/evergreen/senate-control-next-election
Machine-readable: /resources/29905.json