# likelihoods.io Polymarket Overview

> likelihoods.io Polymarket Overview is a paid API for AI agents from likelihoods.io, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).

Returns a concise overview of Polymarket prediction markets including key metrics like volume, liquidity, and number of open markets.

## Facts

- Endpoint: GET https://likelihoods.io/api/tools/polymarket/overview
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/likelihoods-io-e25cdf3b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6K4UBi1sWfPZ9rb5BaqBM

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 likelihoods-io-e25cdf3b
```

Example prompt: Give me a quick overview of Polymarket right now — total volume, liquidity, and how many markets are currently open.

## When to prefer this

Use this endpoint when you need a high-level snapshot of Polymarket's overall health and activity — total volume, liquidity, and open market count — rather than details on specific markets or trending topics. Best for dashboards, quick status checks, or before diving into more granular market analysis.

## Known failure modes

- Polymarket API unavailable — upstream data source error
- Rate limit exceeded — too many calls
- Payment required error if x402 payment not included
- Empty or stale data if Polymarket has no recent activity

## How this service works

Provides a concise overview of Polymarket markets and key metrics (volume, liquidity, open markets) for quick market analysis.

## Output

A concise summary of Polymarket's current state, including aggregate metrics such as total trading volume, total liquidity available across markets, and the count of currently open/active markets.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/likelihoods-io-e25cdf3b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from likelihoods.io](https://www.zero.xyz/host/likelihoods.io/llms.txt)