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/api/v1/markets/{id}/similarGET
Find semantically similar markets using AI embeddings
Authorization
bearerAuth *Bearer <token>
Clerk session JWT, or an API key (the ak_ prefix), sent as a Bearer token or an ?api_key= query parameter. Each endpoint requires the read scope for its resource (e.g. org:rates:read for rates). Token in: header
Query Parameters
min_similarity?number
Minimum similarity
Default: 0Min: 0Max: 1
page?integer
Page number
Default: 1Min: 1
per_page?integer
Items per page
Default: 100Min: 1Max: 500
Response
200 · Paginated similar markets
data?object[]
Show item properties
market_id?string
similarity?number
description?stringnull
platform?stringnull
latest_price?numbernull
question?stringnull
The market's question.
meta?object
Show properties
total?integer
Total number of records matching the request across every page, not just the number returned in this one.
page?integer
The 1-based page number this response covers.
per_page?integer
Maximum number of items on a page. The last page may hold fewer.
total_pages?integer
Number of pages available at this per_page. It is at least 1, even when nothing matched.
has_next?boolean
True when a page exists after this one.
has_prev?boolean
True when this is not the first page.
403 · The organization has no paid plan, so the realtime read scopes are refused. Distinct from a 429, which means a plan's budget ran out: nothing here resets on a timer, and the request succeeds only once the organization holds a plan.
error *string
Human-readable reason the request was refused.
status *integer
HTTP status code, repeated in the body.
upgrade_url?string (uri)
Page listing the plans and their request allowances, for buying access. Absent when no plan is available for purchase.
429 · The paid organization's minute or UTC-day request budget is exhausted.
error *"rate_limited"
Always rate_limited. Branch on this to detect a throttled request.
limit *"rpm" | "daily"
Which limit was hit: rpm for the per-minute cap or daily for the daily one.
message *string
Human-readable explanation naming the limit that was exceeded.
upgrade_url?string (uri)
Page listing the plans and their request allowances, for buying a larger budget. Absent when no plan is available for purchase.
Request example
curl -X GET "https://api.adjacent.markets/api/v1/markets/<id>/similar" \
  -H "Authorization: Bearer <token>"
Response example
{
  "data": [
    {
      "market_id": "kalshi:KXNBA-26-NYK",
      "similarity": 0.91,
      "platform": "kalshi",
      "question": "Will the New York win the 2026 Pro Basketball Finals?"
    },
    {
      "market_id": "kalshi:KXNBA-26-BOS",
      "similarity": 0.88,
      "platform": "kalshi",
      "question": "Will the Boston win the 2026 Pro Basketball Finals?"
    }
  ],
  "meta": {
    "total": 2,
    "page": 1,
    "per_page": 20,
    "total_pages": 1,
    "has_next": false,
    "has_prev": false
  }
}
Adjacent News API
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