# Kalshi Trades Data via PaySponge

> Kalshi Trades Data via PaySponge is a paid API for AI agents from api.paysponge.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Fetches real-time and historical Kalshi prediction market trade data, gated by a $0.01 USDC crypto micropayment per call

## Facts

- Endpoint: GET https://api.paysponge.com/x402/purchase/svc_d5y7k40sm2ntn45xr/kalshi/trades
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-paysponge-com-ab9b570e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QmF79dtJF8XPbwCCpzEUe

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 api-paysponge-com-ab9b570e
```

Example prompt: Pull the latest Kalshi prediction market trades for me — I want to see recent trade activity across markets and I'm okay paying the per-call crypto fee.

## When to prefer this

Choose this endpoint when you need Kalshi-specific prediction market trade data (real-time or historical) and are able to make micropayments via on-chain USDC on EVM (Base) or Solana. Ideal for agents that already support the x402 payment protocol and need pay-per-call access without a subscription.

## Known failure modes

- Payment not completed or insufficient USDC balance — 402 Payment Required response
- Unsupported network or token — payment rejected
- Kalshi upstream unavailable — 502 or timeout
- Invalid or malformed request — 400 Bad Request
- Rate limiting or quota exceeded — 429 Too Many Requests

## How this service works

Purchase paid access to Kalshi market trades (real-time and historical) using crypto payments on EVM and Solana networks.

## Output

Returns a JSON payload containing Kalshi trade records (real-time and/or historical), including trade details such as prices, quantities, market identifiers, and timestamps. Access is granted after a $0.01 USDC on-chain payment via EVM (Base) or Solana networks.

## 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",
     "properties": {},
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "additionalProperties": true
    }
   },
   "additionalProperties": false
  }
 },
 "additionalProperties": false
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "x402Version",
  "error",
  "resource",
  "accepts",
  "extensions",
  "_x402",
  "_paymentRequired",
  "_wwwAuthenticate"
 ],
 "properties": {
  "_x402": {
   "type": "boolean"
  },
  "error": {
   "type": "string"
  },
  "accepts": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "scheme",
     "network",
     "amount",
     "asset",
     "payTo",
     "maxTimeoutSeconds",
     "extra"
    ],
    "properties": {
     "asset": {
      "type": "string"
     },
     "extra": {
      "type": "object",
      "required": [
       "name",
       "version"
      ],
      "properties": {
       "name": {
        "type": "string"
       },
       "version": {
        "type": "string"
       }
      }
     },
     "payTo": {
      "type": "string"
     },
     "amount": {
      "type": "string"
     },
     "scheme": {
      "type": "string"
     },
     "network": {
      "type": "string"
     },
     "maxTimeoutSeconds": {
      "type": "number"
     }
    }
   }
  },
  "resource": {
   "type": "object",
   "required": [
    "url",
    "description",
    "mimeType"
   ],
   "properties": {
    "url": {
     "type": "string"
    },
    "mimeType": {
     "type": "string"
    },
    "description": {
     "type": "string"
    }
   }
  },
  "extensions": {
   "type": "object",
   "required": [
    "bazaar"
   ],
   "properties": {
    "bazaar": {
     "type": "object",
     "required": [
      "info",
      "schema"
     ],
     "properties": {
      "info": {
       "type": "object",
       "required": [
        "input",
        "output"
       ],
       "properties": {
        "input": {
         "type": "object",
         "required": [
          "type",
          "method",
          "queryParams"
         ],
         "properties": {
          "type": {
           "type": "string"
          },
          "method": {
           "type": "string"
          },
          "queryParams": {
           "type": "object",
           "required": [],
           "properties": {}
          }
         }
        },
        "output": {
         "type": "object",
         "required": [
          "type",
          "example"
         ],
         "properties": {
          "type": {
           "type": "string"
          },
          "example": {
           "type": "object",
           "required": [],
           "properties": {}
          }
         }
        }
       }
      },
      "schema": {
       "type": "object",
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-paysponge-com-ab9b570e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.paysponge.com](https://www.zero.xyz/host/api.paysponge.com/llms.txt)