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Polymarket Order Books (Batch)
web-searchfinancial-dataprediction-marketsweathertraveldata
Polymarket Order Books (Batch) is a paid API for AI agents from AIsa MPP Data APIs at api.aisa.one, paid per call via MPP, $0.012/call, status unknown (last checked 2026-10-18).
Retrieves order book snapshots (bids, asks, last trade price, tick size) for one or more Polymarket token IDs in a single request.
Price / call$0.012
Success—
StatusUnknown
How this service works
Retrieves order book summaries for multiple token IDs using a request body. <!-- aisa-pricing:start --> Published reference price: $0.012 USD per successful request. Account-specific pricing and final settlement may differ. <!-- aisa-pricing:end -->
Output
An array of order book objects, one per requested token ID. Each object contains the market condition ID, asset ID, a timestamp, a hash of the snapshot, sorted lists of bid orders (price descending) and ask orders (price ascending) each with price and size, the minimum order size, the tick size, a neg_risk boolean, and the last trade price.
Example use cases
Checking spread before placing a trade
“Before I place an order, can you grab the order book for Polymarket token 0xabc123def456 and tell me the current best bid and ask prices and how wide the spread is?”
Monitoring liquidity across multiple markets
“I'm tracking three Polymarket prediction markets with token IDs 0xtoken1, 0xtoken2, and 0xtoken3 — can you pull the full order book for all three and tell me how deep the bid and ask sides are?”
Getting last trade price for arbitrage check
“What was the last trade price and current order book snapshot for Polymarket token 0xabc999xyz on the BUY side? I want to compare it against another exchange.”
Technical details
Endpoint
POSThttps://api.aisa.one/apis/v1/polymarket/books?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to fetch order book data for one or more Polymarket prediction market tokens in a single call, especially when batch retrieval is needed. Prefer this over single-token endpoints when querying multiple markets simultaneously to reduce round trips. Ideal for agents monitoring liquidity, computing spreads, or checking execution conditions before placing trades on Polymarket.
Side effects
- Invalid or non-existent token_id returns an empty or error response
- Malformed request body (missing required token_id field) returns a validation error
- Rate limiting or upstream Polymarket API downtime causes request failure
- Stale data if Polymarket's order book feed is delayed
- Empty bids or asks arrays for illiquid or inactive markets
Input
Schema · Request body
{
"type": "array",
"items": {
"type": "object",
"required": [
"token_id"
],
"properties": {
"side": {
"enum": [
"BUY",
"SELL"
],
"type": "string",
"example": "BUY",
"description": "Order side (optional, not used for midpoint calculation)"
},
"token_id": {
"type": "string",
"example": "0xabc123def456...",
"description": "Token ID (asset ID)"
}
}
}
}Output
Schema · Response
{
"type": "array",
"items": {
"type": "object",
"required": [
"market",
"asset_id",
"timestamp",
"hash",
"bids",
"asks",
"min_order_size",
"tick_size",
"neg_risk",
"last_trade_price"
],
"properties": {
"asks": {
"type": "array",
"items": {
"type": "object",
"required": [
"price",
"size"
],
"properties": {
"size": {
"type": "string",
"example": "100",
"description": "Order size"
},
"price": {
"type": "string",
"example": "0.45",
"description": "Order price"
}
}
},
"description": "List of ask orders (sorted by price ascending)"
},
"bids": {
"type": "array",
"items": {
"type": "object",
"required": [
"price",
"size"
],
"properties": {
"size": {
"type": "string",
"example": "100",
"description": "Order size"
},
"price": {
"type": "string",
"example": "0.45",
"description": "Order price"
}
}
},
"description": "List of bid orders (sorted by price descending)"
},
"hash": {
"type": "string",
"example": "a1b2c3d4e5f6...",
"description": "Hash of the order book summary"
},
"market": {
"type": "string",
"example": "0x1234567890123456789012345678901234567890",
"description": "Market condition ID"
},
"asset_id": {
"type": "string",
"example": "0xabc123def456...",
"description": "Token ID (asset ID)"
},
"neg_risk": {
"type": "boolean",
"example": false,
"description": "Whether negative risk is enabled for this market"
},
"tick_size": {
"type": "string",
"example": "0.01",
"description": "Minimum price increment (tick size)"
},
"timestamp": {
"type": "string",
"example": "1234567890",
"description": "Timestamp of the order book snapshot"
},
"min_order_size": {
"type": "string",
"example": "1",
"description": "Minimum order size"
},
"last_trade_price": {
"type": "string",
"example": "0.45",
"description": "Last trade price"
}
}
}
}Tags
web-searchfinancial-dataprediction-marketsweathertraveldatasearch
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