Polymarket and Kalshi Matched Pairs (Politics, Exact Matches)

omnial/prediction-market-matching-pairs

Returns matched pairs of political prediction markets that list the same event on both Polymarket and Kalshi, exact matches only, each with a match confidence, the Polymarket market's condition id, token id, outcome, question, event slug, volume and active flag, the Kalshi market's ticker, title, event ticker, volume, open interest and status, and a Kalshi or Polymarket price where one is given. Use it to find the same political question on both platforms.

activeper callv1

Price

Up to $0.0328 per call; you pay what the call used

The price shown is the price you pay. No monthly minimum. Top-ups start at $5.

Data source

Polymarket and Kalshi

Data from Polymarket and Kalshi.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "omnial/prediction-market-matching-pairs" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "omnial/prediction-market-matching-pairs" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "omnial/prediction-market-matching-pairs", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "omnial/prediction-market-matching-pairs", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

Not connected yet? Point your MCP client at https://mcp.eden-engine.com/mcp, then copy a config for your client.

Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0328

Updated: Oct 15, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "category",
    "match_type"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "default": 20,
      "maximum": 100,
      "minimum": 1,
      "description": "Maximum rows to return. Example: 20. Defaults to 20."
    },
    "order": {
      "enum": [
        "desc"
      ],
      "type": "string",
      "default": "desc",
      "description": "Sort order. Only \"desc\" is offered. Defaults to \"desc\"."
    },
    "offset": {
      "enum": [
        0
      ],
      "type": "integer",
      "default": 0,
      "description": "Pagination offset. Only 0 is offered. Defaults to 0."
    },
    "sort_by": {
      "enum": [
        "confidence"
      ],
      "type": "string",
      "default": "confidence",
      "description": "Sort field. Only \"confidence\" is offered. Defaults to \"confidence\"."
    },
    "category": {
      "enum": [
        "politics"
      ],
      "type": "string",
      "description": "Market category. Only politics is offered."
    },
    "match_type": {
      "enum": [
        "exact"
      ],
      "type": "string",
      "description": "Match type. Only exact is offered."
    },
    "active_only": {
      "type": "boolean",
      "default": false,
      "description": "Only return pairs where both markets are currently active. Defaults to false."
    },
    "min_confidence": {
      "type": "integer",
      "default": 0,
      "maximum": 100,
      "minimum": 0,
      "description": "Minimum confidence score (0-100). Defaults to 0."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "properties": {
    "data": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "kalshi": {
            "type": "object",
            "properties": {
              "title": {
                "type": "string"
              },
              "status": {
                "type": "string"
              },
              "event_ticker": {
                "type": "string"
              },
              "market_ticker": {
                "type": "string"
              },
              "open_interest": {
                "type": "number"
              },
              "volume_contracts": {
                "type": "number"
              }
            }
          },
          "category": {
            "type": "string"
          },
          "confidence": {
            "type": "number",
            "description": "Match confidence score."
          },
          "match_type": {
            "type": "string"
          },
          "polymarket": {
            "type": "object",
            "properties": {
              "question": {
                "type": "string"
              },
              "token_id": {
                "type": "string"
              },
              "is_active": {
                "type": "boolean"
              },
              "event_slug": {
                "type": "string"
              },
              "volume_usd": {
                "type": "number"
              },
              "condition_id": {
                "type": "string"
              },
              "outcome_label": {
                "type": "string"
              }
            }
          },
          "kalshi_price": {
            "type": "number",
            "description": "Kalshi price, present on some pairs."
          },
          "polymarket_price": {
            "type": "number",
            "description": "Polymarket price, present on some pairs."
          }
        }
      }
    },
    "meta": {
      "type": "object",
      "properties": {
        "limit": {
          "type": "number"
        },
        "cached": {
          "type": "boolean"
        },
        "offset": {
          "type": "number"
        }
      }
    }
  },
  "description": "Matched Polymarket and Kalshi pairs, as returned after shaping."
}