# Polymarket Prices (Batch)

> Polymarket Prices (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 market prices for multiple Polymarket token IDs and order sides (BUY/SELL) in a single batch request.

## Facts

- Endpoint: POST https://api.aisa.one/apis/v1/polymarket/prices?utm_source=zero.xyz
- Price: $0.012/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Provider: AIsa MPP Data APIs
- Website: https://aisa.one
- Tags: web-search, financial-data, prediction-markets, weather, travel, data, search
- Canonical page: https://www.zero.xyz/c/aisa-mpp-data-apis-polymarket-prices-batch-d8b43f89
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_u2jB3VcKEEveACTP34Unq

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability aisa-mpp-data-apis-polymarket-prices-batch-d8b43f89 -d '<json body>'
```

Example prompt: Can you fetch the current BUY and SELL prices on Polymarket for these three token IDs: 0xabc123, 0xdef456, and 0x789xyz?

## When to prefer this

Use this endpoint when you need to look up prices for multiple Polymarket tokens in a single call rather than making individual price requests. It is ideal for portfolio monitoring, batch pre-trade checks, or any scenario where you have a list of token IDs and want BUY/SELL prices efficiently. Prefer the single-token Price endpoint when querying just one token.

## Known failure modes

- Invalid or non-existent token IDs return missing keys or zero values
- Malformed token_id strings may cause 400 Bad Request
- Empty input array returns an empty object
- Market may be closed or delisted, yielding no price data
- Network or upstream Polymarket API unavailability causes 500 or timeout errors

## How this service works

Retrieves market prices for multiple token IDs and sides using query parameters.

<!-- aisa-pricing:start -->
Published reference price: $0.012 USD per successful request. Account-specific pricing and final settlement may differ.
<!-- aisa-pricing:end -->

## Output

A JSON object mapping each token ID to a nested map of order side (BUY/SELL or midpoint) to a numeric price (double). For example: {"0xabc123": {"BUY": 0.62, "SELL": 0.58}}. Prices represent the best available market price for each requested side.

## Request schema (JSON Schema)

```json
{
 "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)"
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "description": "Map of token ID to map of side to price",
 "additionalProperties": {
  "type": "object",
  "additionalProperties": {
   "type": "number",
   "format": "double"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/aisa-mpp-data-apis-polymarket-prices-batch-d8b43f89/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.aisa.one](https://www.zero.xyz/host/api.aisa.one/llms.txt)