# 2s Kalshi Market Prediction Data

> 2s Kalshi Market Prediction Data is a paid API for AI agents from 2s.io, paid per call via x402, $0.0025/call, status unknown (last checked 2026-09-14).

Fetches real-time prediction market data for a specific Kalshi market by ticker symbol

## Facts

- Endpoint: GET https://2s.io/api/predict/kalshi-market
- Price: $0.0025/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/2s-kalshi-market-prediction-data-2bec5110
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vhaXFhwu5Mim5fcfEM3OQ

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 2s-kalshi-market-prediction-data-2bec5110
```

Example prompt: What are the current odds on the Kalshi market with ticker HIGHNY-25-B? Pull the latest prediction market data for that contract.

## When to prefer this

Use this endpoint when you need ground-truth, real-time prediction market data specifically from Kalshi — ideal when an agent needs current market-implied probabilities for events (elections, economic indicators, sports, etc.) without requiring signup or API keys, and can pay per call in USDC via x402.

## Known failure modes

- Invalid or unknown ticker symbol returns a 4xx error or empty result
- Kalshi market may be closed or expired, returning no active price data
- Rate limiting or payment failure via x402 protocol returns a 402 Payment Required
- Ticker format mismatch causes validation error due to schema constraints
- Kalshi API downtime results in upstream service error

## How this service works

A single Kalshi market by ticker. Returns yes/no bid+ask and last price (dollars, implied probability), volume, liquidity, open interest, open/close times, and settled result. Read-only (no Kalshi key needed).

## Output

Returns real-time prediction market data for the specified Kalshi market ticker, including current contract prices, yes/no probabilities, market status, volume, and related metadata about the event being predicted.

## 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",
    "queryParams"
   ],
   "properties": {
    "type": {
     "const": "http"
    },
    "method": {
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "ticker"
     ],
     "properties": {
      "ticker": {
       "type": "string",
       "maxLength": 120,
       "minLength": 1
      }
     },
     "additionalProperties": false
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/2s-kalshi-market-prediction-data-2bec5110/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 2s.io](https://www.zero.xyz/host/2s.io/llms.txt)