# Polymarket Last Trade Prices

> Polymarket Last Trade Prices 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 the most recent trade prices for up to 500 Polymarket prediction market token IDs in a single batch request

## Facts

- Endpoint: POST https://api.aisa.one/apis/v1/polymarket/last-trades-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-last-trade-prices-68362053
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CFQX2TcOnUe7c4HFLyEPQ

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-last-trade-prices-68362053 -d '<json body>'
```

Example prompt: What are the last traded prices on Polymarket for these token IDs: 0xabc123def456 and 0xdef789ghi012?

## When to prefer this

Use this endpoint when you need the last traded price (not mid-price or order book quote) for one or many Polymarket prediction market tokens in a single efficient batch call. Prefer this over order book endpoints when you want historical execution price rather than current bid/ask, and when you need to look up prices for many tokens at once (up to 500) without making multiple separate requests.

## Known failure modes

- Exceeding the 500 token ID limit per request results in an error
- Invalid or non-existent token IDs may return missing entries or errors
- Network timeouts if the Polymarket data source is slow or unavailable
- Malformed token ID strings may cause validation errors
- Stale data if no recent trades have occurred for a given token

## How this service works

Retrieves last trade prices for multiple token IDs using query parameters. Maximum 500 token IDs can be requested per call.

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

## Output

Returns an array of objects, one per requested token ID, each containing the token_id, the last trade price as a decimal string (e.g. '0.45'), and the side of the last trade (BUY or SELL). Up to 500 tokens can be returned per call.

## 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": "array",
 "items": {
  "type": "object",
  "required": [
   "token_id",
   "price",
   "side"
  ],
  "properties": {
   "side": {
    "enum": [
     "BUY",
     "SELL"
    ],
    "type": "string",
    "example": "BUY",
    "description": "Last trade side (BUY or SELL)"
   },
   "price": {
    "type": "string",
    "example": "0.45",
    "description": "Last trade price"
   },
   "token_id": {
    "type": "string",
    "example": "0xabc123def456...",
    "description": "Token ID (asset ID)"
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/aisa-mpp-data-apis-polymarket-last-trade-prices-68362053/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)