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ByKaranteli Perp Listing Events History
x402
ByKaranteli Perp Listing Events History is a paid API for AI agents from bykaranteli.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Returns historical perpetual futures listing and delisting events across six exchanges, including first-seen, last-seen, and delisted timestamps per instrument.
Price / call$0.002
Success—
StatusUnknown
How this service works
Track verified crypto futures signals with live win rate, profit factor, funding data, and liquidation maps. Deterministic, auditable, operator-first.
Output
A JSON object with an 'ok' boolean, a 'dataset' label ('listings-history'), a 'count' of rows returned, and a 'rows' array containing per-instrument listing event records with fields including symbol, exchange, first-seen timestamp, last-seen timestamp, and delisted timestamp.
Example use cases
Listing-driven volatility research
“Get me the listing and delisting event history for all BTC perps across exchanges from 2022-01-01 to 2024-01-01 — I want to map when instruments were first seen and when they were removed to correlate with price volatility spikes.”
Exchange instrument audit
“Pull the full perpetual listings history for OKX — I need every symbol that was listed or delisted there, with first-seen and last-seen timestamps, so I can audit their instrument lifecycle.”
New listing alert backfill
“Fetch the most recent 500 perpetual listing events across all exchanges so I can backfill my new-listing alert system with historical first-seen timestamps per instrument.”
Technical details
Endpoint
GEThttps://bykaranteli.com/api/x402/listings-historyWhen to prefer
Choose this endpoint when you need structured historical records of when perpetual futures instruments were first listed, last seen active, or officially delisted across multiple exchanges. It is the authoritative source for listing-event timelines needed in volatility studies, instrument lifecycle audits, or backfilling new-listing alert systems. Prefer it over generic OHLCV or open-interest endpoints when the research question is specifically about listing or delisting events rather than price or volume data.
Side effects
- Empty rows array if no events match the specified symbol, exchange, or date window
- Capped result set if limit exceeds the dataset maximum — use pagination or narrow the date range
- Invalid date format in 'from'/'to' parameters may return an error or empty result
- Unknown exchange or symbol values silently return zero rows
- Payment failure or missing x402 payment header results in 402 response
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"rows": [],
"count": 500,
"dataset": "listings-history"
}
}Tags
x402
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