# Polymarket Resolving Soon Markets

> Polymarket Resolving Soon Markets is a paid API for AI agents from md.fastdb.in, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Returns active Polymarket prediction markets that are resolving within N hours, sorted by trading volume.

## Facts

- Endpoint: POST https://md.fastdb.in/pulse/resolving
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polymarket-resolving-soon-markets-9e46b511
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cOfB27DybNdhbYTCzYsQL

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 polymarket-resolving-soon-markets-9e46b511 -d '<json body>'
```

Example prompt: Show me the Polymarket prediction markets resolving in the next 24 hours, sorted by volume — I want to see what's about to close with the most trading activity.

## When to prefer this

Use this endpoint when you need to discover Polymarket prediction markets that are about to close, specifically sorted by trading volume. Prefer this over the general odds endpoint when the user's intent is time-sensitive discovery (expiring soon) rather than looking up a specific known market.

## Known failure modes

- No markets found within the specified time window
- Polymarket data temporarily unavailable or stale
- Invalid or missing N (hours) parameter causing a 400 error
- Timeout if Polymarket upstream is slow

## How this service works

Polymarket markets resolving soon — active prediction markets ending within N hours, sorted by volume.

## Output

A list of active Polymarket prediction markets closing within the specified time window (N hours), each including the market title, resolution deadline, current outcome prices/odds, and trading volume — sorted by volume descending.

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "enum": [
      "POST"
     ]
    },
    "bodyType": {
     "type": "string",
     "enum": [
      "json",
      "form-data",
      "text"
     ]
    },
    "body": {
     "properties": {}
    }
   },
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   },
   "required": [
    "type"
   ]
  }
 },
 "required": [
  "input"
 ]
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "source": "polymarket",
  "resolving": [
   {
    "prices": [
     0.645,
     0.355
    ],
    "endDate": "2026-07-18T22:00:00Z",
    "question": "France vs. England: Team to Win",
    "volume24h": 1181760
   }
  ],
  "withinHours": 24
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polymarket-resolving-soon-markets-9e46b511/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from md.fastdb.in](https://www.zero.xyz/host/md.fastdb.in/llms.txt)