# Kalshi Search

> Kalshi Search is a paid API for AI agents from bess-x402.onrender.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-29).

Search Kalshi's US-regulated prediction exchange for open markets on economic, political, weather, and sports events, returning probabilities, bid/ask prices, volume, and close times.

## Facts

- Endpoint: GET https://bess-x402.onrender.com/v1/predictions/kalshi/search?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kalshi-search-4cdb4d4d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KkP-lZb9ZE192dvYnHKzI

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-search-4cdb4d4d
```

Example prompt: Search Kalshi for open prediction markets about the next Fed interest rate decision and show me the yes bid, ask, and last traded probability for each market.

## When to prefer this

Use this endpoint when you need real-money prediction market probabilities from a US-regulated exchange (Kalshi) for economic indicators (CPI, Fed decisions, jobs), political events, weather, crypto prices, or sports. Prefer this over Polymarket when US regulatory compliance or legitimacy of the source is important, or when events are specifically listed on Kalshi but not Polymarket.

## Known failure modes

- No markets found for the search query — returns empty results
- Query too vague returns unrelated markets
- Kalshi API downtime causes upstream errors
- Limit parameter outside 1-30 range may be rejected or clamped
- Markets may close between search and display, making results stale

## How this service works

Search Kalshi, the US-regulated prediction exchange, for open events (Fed decisions, CPI, elections, weather, crypto prices, sports) and get every market's yes bid/ask and last price as probabilities, volume and close time. Use for US economic and political event odds.

## Output

A list of open Kalshi prediction markets matching the search query, each including the market title, yes bid and ask prices expressed as probabilities (0–1), last traded price, trading volume, and the market close datetime.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "Search words"
      },
      "limit": {
       "type": "integer",
       "description": "Maximum number of results (1-30)"
      }
     }
    }
   },
   "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/kalshi-search-4cdb4d4d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bess-x402.onrender.com](https://www.zero.xyz/host/bess-x402.onrender.com/llms.txt)