# Kalshi Prediction Markets Lookup via AgentToll

> Kalshi Prediction Markets Lookup via AgentToll is a paid API for AI agents from agenttoll.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Fetches a list of active prediction market listings from Kalshi, filterable by category and result count.

## Facts

- Endpoint: POST https://agenttoll.dev/paid/kalshi/markets
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kalshi-prediction-markets-lookup-via-agenttoll-48443f93
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CXbTlxEC0PmNF-TEv8Grd

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 kalshi-prediction-markets-lookup-via-agenttoll-48443f93 -d '<json body>'
```

Example prompt: Show me up to 50 Kalshi prediction markets in the politics category — I want to see what's currently available to trade.

## When to prefer this

Use this endpoint when an AI agent needs structured, programmatic access to Kalshi prediction market listings — especially when filtering by category or controlling result count. Prefer this over scraping Kalshi's website directly, or when you need pay-per-call access without a long-term Kalshi API subscription. Ideal for agents doing market research, financial forecasting analysis, or monitoring prediction market availability across specific event domains.

## Known failure modes

- Empty markets array returned if no markets match the specified category
- Payment failure if USDC balance on Base is insufficient for the $0.02 per-call fee
- Invalid category string returns empty or error response
- Limit value outside 5–100 range rejected with validation error
- Kalshi API downtime may result in upstream timeout or empty response

## How this service works

108+ receipt-backed x402 work products for AI agents. Clear prices, spend caps, buyer metadata, and structured results over Base USDC.

## Output

A JSON object with a 'source' field identifying 'Kalshi Trade API' and a 'markets' array containing prediction market contract objects, each describing an active or upcoming Kalshi market event including relevant metadata such as market titles, categories, and contract details.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {
      "limit": {
       "type": "integer",
       "maximum": 100,
       "minimum": 5
      },
      "category": {
       "type": "string",
       "maxLength": 50
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "source": "Kalshi Trade API",
  "markets": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kalshi-prediction-markets-lookup-via-agenttoll-48443f93/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agenttoll.dev](https://www.zero.xyz/host/agenttoll.dev/llms.txt)