curl --request GET \
  --url https://api.routeur.app/v1/relations/{left_venue}/{left_id}/{right_venue}/{right_id} \
  --header 'X-API-Key: <api-key>'

import requests

url = "https://api.routeur.app/v1/relations/{left_venue}/{left_id}/{right_venue}/{right_id}"

headers = {"X-API-Key": "<api-key>"}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {'X-API-Key': '<api-key>'}};

fetch('https://api.routeur.app/v1/relations/{left_venue}/{left_id}/{right_venue}/{right_id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.routeur.app/v1/relations/{left_venue}/{left_id}/{right_venue}/{right_id}"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("X-API-Key", "<api-key>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

{
  "graph_run": 812,
  "data": {
    "relation": "contradicts",
    "graph_relation": "contradicts",
    "direction": "mutually_exclusive",
    "cross_venue": true,
    "left": {
      "venue": "kalshi",
      "id": "KXNFLSPREAD-26SEP14DENKC-KC21",
      "event_id": "KXNFLSPREAD-26SEP14DENKC",
      "title": "Kansas City wins by over 20.5 points?",
      "yes_label": "Yes",
      "no_label": "No",
      "rules_hash": "9f2c61d0a4be",
      "strike": {
        "type": "greater",
        "floor": "41/2",
        "rules_template_hash": "51c0e2"
      },
      "event_mutually_exclusive": false,
      "variable": "NFL margin of Kansas City, Denver vs Kansas City, 2026-09-14 ET",
      "interval": "(20.5, ∞)",
      "settlement": {
        "payout_currency": "USD",
        "scope": "the game's final score; neither venue restricts periods"
      },
      "first_seen_at": "2026-09-08T14:00:00Z"
    },
    "right": {
      "venue": "polymarket",
      "id": "nfl-den-kc-2026-09-15-spread-away-1pt5",
      "event_id": "99",
      "title": "Spread: Broncos (-1.5)",
      "yes_label": "Broncos",
      "no_label": "Chiefs",
      "rules_hash": "0c77e1b9d2aa",
      "strike": {
        "type": "greater",
        "floor": "3/2",
        "rules_template_hash": "a1d4f0"
      },
      "event_mutually_exclusive": false,
      "variable": "NFL margin of Broncos, Broncos vs Chiefs, 2026-09-14 ET",
      "interval": "(1.5, ∞)",
      "settlement": {
        "payout_currency": "USDC",
        "scope": "the game's final score; neither venue restricts periods",
        "game_starts_at": "2026-09-15T00:15:00Z"
      },
      "first_seen_at": "2026-09-09T02:30:00Z"
    },
    "steps": [
      {
        "step": "game_quantity",
        "left": "NFL margin of Kansas City, Denver vs Kansas City, 2026-09-14 ET",
        "right": "NFL margin of Broncos, Broncos vs Chiefs, 2026-09-14 ET",
        "result": "same_kind"
      },
      {
        "step": "same_game",
        "detail": "cross-venue: same nfl game scheduled 2026-09-14 ET, matched by team codes and team names; both settle on the game's final score; neither venue restricts periods; postponement and cancellation settle differently",
        "result": "same"
      },
      {
        "step": "orient_margin",
        "detail": "the contracts name opposite teams' margins; Broncos's margin (1.5, ∞) is (-∞, -1.5) on Kansas City's margin",
        "right": "(-∞, -1.5)",
        "result": "negated"
      },
      {
        "step": "intervals",
        "left": "(20.5, ∞)",
        "right": "(-∞, -1.5)",
        "result": "contradicts"
      },
      {
        "step": "conclusion",
        "relation": "contradicts"
      }
    ],
    "evidence": [
      "cross-venue: same nfl game scheduled 2026-09-14 ET, matched by team codes and team names; both settle on the game's final score; neither venue restricts periods; postponement and cancellation settle differently"
    ],
    "reproduced": true,
    "found_by": {
      "id": 790,
      "graph_version": "contract-graph/v1",
      "started_at": "2026-09-09T03:00:00Z",
      "finished_at": "2026-09-09T03:04:12Z"
    },
    "confirmed_by": {
      "id": 812,
      "graph_version": "contract-graph/v1",
      "started_at": "2026-09-14T11:00:00Z",
      "finished_at": "2026-09-14T11:03:58Z"
    },
    "first_seen_at": "2026-09-09T03:04:12Z",
    "last_confirmed_at": "2026-09-14T11:03:58Z"
  }
}

{
  "error": {
    "code": "invalid_parameter",
    "message": "Invalid or unsupported query parameter: limit."
  }
}

{
  "error": {
    "code": "api_key_required",
    "message": "Send an API key in the X-API-Key header or as a Bearer token."
  }
}

{
  "error": {
    "code": "relation_not_found",
    "message": "No current proof relates these markets: the latest graph does not relate their current contract versions."
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>"
  }
}