# Aizamon Bot Fuel – Polymarket vs Kalshi Arbitrage Card

> Aizamon Bot Fuel – Polymarket vs Kalshi Arbitrage Card is a paid API for AI agents from api.aizamon.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-20).

Returns the top cross-venue mispricing spread and net edge between Polymarket and Kalshi prediction markets for use by trading bots.

## Facts

- Endpoint: GET https://api.aizamon.com/x402/v1/bot-fuel?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/aizamon-bot-fuel-polymarket-vs-kalshi-arbitrage-card-fc715e59
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_X9-JuFVJ95ItoIAZsfHaM

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 aizamon-bot-fuel-polymarket-vs-kalshi-arbitrage-card-fc715e59
```

Example prompt: Pull the latest Polymarket vs Kalshi arbitrage card — I want the top spread and net edge right now so my trading bot can act on the best cross-venue mispricing gap.

## When to prefer this

Choose this endpoint when your trading bot needs a fast, pre-computed arbitrage signal between Polymarket and Kalshi without doing the cross-venue data aggregation yourself. Ideal for bots that need a single low-cost ($0.25) call to get the top spread and net edge in inline JSON, especially at scale via pack or day-based billing.

## Known failure modes

- Payment not processed or insufficient USDC — 402 Payment Required returned
- No significant spread detected — response may return zero or minimal edge
- Market data temporarily unavailable — upstream venue API outage
- Malformed request — missing or invalid parameters result in 4xx error
- Rate limit exceeded when scaling beyond allowed pack/day quota

## How this service works

Polymarket vs Kalshi arbitrage / cross-venue mispricing gap card — $0.25 Bot Fuel. Top spread + net-edge for trading bots. Inline JSON. Scale via pack/day.

## Output

An inline JSON object containing the top cross-venue spread between Polymarket and Kalshi, along with the calculated net edge representing the best current arbitrage opportunity available to trading bots.

## 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"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "q": {
       "type": "string",
       "description": "Market topic keywords. Omit for the top live gap."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "sku": {
       "type": "string"
      },
      "result": {
       "type": "object"
      },
      "protocol": {
       "type": "string"
      }
     },
     "additionalProperties": true
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/aizamon-bot-fuel-polymarket-vs-kalshi-arbitrage-card-fc715e59/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.aizamon.com](https://www.zero.xyz/host/api.aizamon.com/llms.txt)