Agent-readable docs index: /llms.txt. Full docs in one file: /llms-full.txt. Download /docs.zip to grep all markdown files locally.
/api/v1/markets/{id}/candlesGET
Get OHLC candles for a market, optionally scoped to a source bucket window.
Authorization
bearerAuth *Bearer <token>
Session token from the app, or an API key (the ak_ prefix), sent as a Bearer token or an ?api_key= query parameter.. Token in: header
Query Parameters
page?integer
Page number
Default: 1Min: 1
per_page?integer
Items per page
Default: 100Min: 1Max: 500
from?string (date-time)
Inclusive lower bound on timestamp
to?string (date-time)
Exclusive upper bound on timestamp
interval?integer
Candle period length in minutes
Default: 60Min: 1
Response
200 · OK
data?object[]
Show item properties
timestamp *string (date-time)
End of the candle period, in UTC. The candle covers the requested interval minutes ending at this instant.
yes_bid?numbernull
Best YES bid at the end of the period, in cents (0-100), so 47 means a 47% probability. Absent when no bid was recorded for the period.
yes_ask?numbernull
Best YES ask at the end of the period, in cents (0-100), so 49 means a 49% probability. Absent when no ask was recorded for the period.
mid *number
Reference price for the period, in cents (0-100), resolved in order: the midpoint of yes_bid and yes_ask when both are present, otherwise the period's mean traded price, otherwise the closing traded price. It is therefore not always a book midpoint and can be identical to close, so do not read it as a quote without checking yes_bid and yes_ask.
close?numbernull
Last traded price in the period, in cents (0-100). Absent when the period had no trades.
volume?numbernull
Contracts traded during the period. Present for Kalshi candles and for polymarket candles when that hour has trade volume. Absent for polymarket-us candles, which come from a display-price feed with no trade sizes.
source *"kalshi_candlestick" | "kalshi_historical_candlestick" | "polymarket_clob_history" | "polymarket_us_price_history"
Where the row came from. kalshi_candlestick and kalshi_historical_candlestick are Kalshi venue candles. polymarket_clob_history is the Polymarket CLOB prices-history midpoint feed. polymarket_us_price_history is the Polymarket US gateway price-history feed, with bid and ask from that feed.
synthetic_book *boolean
True when yes_bid/yes_ask were synthesized as a zero-spread book from a midpoint-only feed (source = polymarket_clob_history) rather than observed on the venue; clients should badge these books as synthetic.
meta?object
Show properties
total?integernull
Total number of records matching the request across every page, not just the current one. null on an uncounted list; page using has_next. A relevance-ranked search is uncounted, and a searched events list stays uncounted even with sort. A searched markets list with sort returns a total over the ranked matches (at most 10,000).
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?integernull
Total number of pages available at the current per_page. null whenever total is null; page using has_next.
has_next?boolean
True when a page exists after this one.
has_prev?boolean
True when this is not the first page.
total_capped?boolean
True when total and total_pages reflect the server's counting ceiling rather than the exact matched count: the real set is at least total large. Render such totals as a lower bound (for example "10,000+"). Omitted when the count is exact. A sorted markets search that fills the 10,000-candidate ceiling sets this flag.
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.
404 · Market not found
error?string
Stable, machine-readable code identifying the failure; branch on this rather than on message. One of bad_request, unauthorized, forbidden, not_found, conflict, service_unavailable, upstream_error, service_error, or internal_error.
message?string
Human-readable explanation, safe to show to a user. For client errors it names the specific problem; for server-side failures it is a generic notice and the underlying detail is deliberately withheld.
429 · The organization's minute or UTC-day request budget is exhausted, or the organization has reached its cap on requests running at the same time (`limit: "concurrency"`). Wait `Retry-After` seconds before retrying; for a concurrency 429, reduce parallelism.
error *"rate_limited"
Always rate_limited. Branch on this to detect a throttled request.
limit *"rpm" | "daily" | "concurrency"
Which limit was hit: rpm for the per-minute cap, daily for the daily one, or concurrency for the cap on requests running at the same time.
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>/candles" \
  -H "Authorization: Bearer <token>"
Response example
{
  "data": [
    {
      "timestamp": "2026-06-01T14:00:00Z",
      "yes_bid": 47,
      "yes_ask": 49,
      "mid": 48,
      "close": 48,
      "volume": 12500,
      "source": "kalshi_candlestick",
      "synthetic_book": false
    },
    {
      "timestamp": "2026-06-01T13:00:00Z",
      "yes_bid": 47,
      "yes_ask": 47,
      "mid": 47,
      "close": 47,
      "volume": 9800,
      "source": "polymarket_clob_history",
      "synthetic_book": true
    }
  ],
  "meta": {
    "total": 2,
    "page": 1,
    "per_page": 100,
    "total_pages": 1,
    "has_next": false,
    "has_prev": false
  }
}
Adjacent API
Powered byHolocron