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Batch Prices

POST /v1/prices/batch
Returns live prices for multiple markets in a single request. Much more efficient than calling GET /v1/markets/{id} individually.

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Request

curl -X POST https://api.polysimulator.com/v1/prices/batch \
  -H "X-API-Key: $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"market_ids": ["0x1a2b3c...", "0x4d5e6f..."]}'
FieldTypeRequiredDescription
market_idsstring[]YesArray of condition_ids (max 50)

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Response

[
  {
    "condition_id": "0x1a2b3c...",
    "price": {
      "buy": "0.65",
      "sell": "0.35",
      "outcomes": [
        {"label": "Yes", "price": "0.65", "token_id": "71321..."},
        {"label": "No", "price": "0.35", "token_id": "71322..."}
      ]
    }
  },
  {
    "condition_id": "0x4d5e6f...",
    "error": "Price not available"
  }
]
Markets with unavailable prices return an error field instead of price. This can happen when a market is newly listed and hasn’t been cached yet.

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Use Cases

  • Portfolio valuation: Fetch current prices for all your positions at once
  • Watchlist monitoring: Track prices for markets you’re interested in
  • Batch strategies: Evaluate multiple markets before submitting batch orders
# Fetch prices for all positions
positions = requests.get(
    f"{BASE}/v1/account/positions",
    headers=headers,
    params={"status": "OPEN"},
).json()

market_ids = [p["market_id"] for p in positions]

prices = requests.post(
    f"{BASE}/v1/prices/batch",
    headers=headers,
    json={"market_ids": market_ids},
).json()

for p in prices:
    if "price" in p:
        print(f"{p['condition_id'][:16]}: Yes={p['price']['buy']}")

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Next Steps