Overview

Base URL

https://ledger.predexon.com

Same x-api-key model as the rest of Predexon. One API key may own multiple Ledger accounts.

curl -H "x-api-key: YOUR_API_KEY" \
  https://ledger.predexon.com/v1/accounts

All errors return a JSON body with an error field.

Status	Meaning
400	Invalid request, insufficient available balance, or invalid `predexonId`
401	Missing or invalid API key
403	Account not owned by this API key
404	Account, order, trade, position, or withdrawal not found
409	Concurrent modification (e.g., order cancelled mid-fill)
429	Rate limited
503	No liquidity available for this market right now

Retry 5xx with exponential backoff. Do not retry 4xx — the request itself needs to change.