Aapipick
Search API · Prediction Markets

Prediction Markets Search API

Query Polymarket and Kalshi contracts on politics, economics, sports, and current events. Pre-shaped JSON for crowd-forecast retrieval and probability grounding in LLM workflows.

50 credits / call30 req / minPOST /api/search/prediction-markets

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5 sample queries — click to load

API Integration Guide

Learn how to integrate this API into your applications with code examples and detailed documentation.

API Overview
Semantic search over Polymarket and Kalshi prediction-market contracts. Returns market titles, summaries, and source URLs.
POST
/api/search/prediction-markets

Base URL

https://www.apipick.com

Full Endpoint

https://www.apipick.com/api/search/prediction-markets
Parameters
Required and optional parameters for this API
query
required
string

Natural-language search query

max_num_results
optional
integer

1–5, default 5

relevance_threshold
optional
number

0.0–1.0 quality filter

country_code
optional
string

ISO country code (e.g. US, GB)

start_date
optional
string

ISO date YYYY-MM-DD

end_date
optional
string

ISO date YYYY-MM-DD

Code Examples
Copy and paste these examples to quickly integrate the API into your application

cURL Request

curl -X POST "https://www.apipick.com/api/search/prediction-markets" \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{
  "query": "2026 US presidential election",
  "max_num_results": 5,
  "country_code": "US",
  "start_date": "2026-01-01"
}'
Replace YOUR_API_KEY with your actual API key
Response Example
Example response from the API

JSON Response

{
  "query": "2026 US presidential election",
  "results": [
    {
      "title": "Example result",
      "url": "https://example.com/article",
      "snippet": "Short excerpt of the page content…",
      "source_type": "web",
      "published_at": "2026-04-15",
      "score": 0.92
    }
  ],
  "result_count": 1,
  "credits_used": 50,
  "remaining_credits": 99
}
Integration Tips

✓Best Practices

  • • Always include x-api-key header
  • • Always handle errors gracefully
  • • Validate input data before sending
  • • Use HTTPS for secure communication
  • • Cache responses when appropriate

ℹResponse Headers

  • • Content-Type: application/json
  • • x-api-key: Required for authentication
  • • Status codes: 200 (success), 400 (error), 401 (unauthorized)
  • • No rate limiting applied

Rate Limits

⏱️

Request Rate

30req / min

Per API key, per endpoint. Sliding 60-second window.

🔀

Concurrency

3concurrent

Max simultaneous in-flight requests per API key.

Response Headers

X-RateLimit-LimitMaximum requests allowed per minute
X-RateLimit-RemainingRequests remaining in the current window
X-RateLimit-ResetSeconds until the current window resets
Retry-AfterSeconds to wait before retrying (only on 429)

429 Too Many Requests

HTTP/1.1 429 Too Many Requests
Retry-After: 12
X-RateLimit-Limit: 30
X-RateLimit-Remaining: 0
X-RateLimit-Reset: 12

{
  "error": "rate_limit_exceeded",
  "message": "Rate limit exceeded: 30 requests/minute per API key. Retry after 12s.",
  "retry_after": 12
}

Frequently Asked Questions

Which markets are covered?

Polymarket (decentralized, USDC-settled) and Kalshi (CFTC-regulated). Both live and resolved markets are searchable.

Are live odds returned?

Results include market metadata and source URLs. For real-time prices, follow the source URL or the market's native API. The endpoint is optimized for retrieval and discovery, not high-frequency quotes.

Why use this instead of going direct?

One endpoint, one auth flow, semantic search across both platforms, and unified credit billing. Useful when an agent needs to ground a probabilistic claim without integrating two separate APIs.

Date filtering?

Yes. start_date / end_date filter markets by listing or resolution date.

Tool schema?

GET /api/search/prediction-markets/tool-schema returns OpenAI and Claude tool-use definitions.