generated: '2026-07-18'
method: searched
source: https://tradingapi.bullet.xyz/docs/
derived_from: openapi/bullet-trading-api-openapi.json
compatibility: Binance USD-M Futures (FAPI) compatible endpoints for trading, account, and market data.
authentication:
  style: ed25519 signed transactions for writes; public read endpoints
  ref: authentication/bullet-authentication.yml
base_paths:
  market_data_and_trading: /fapi/v1
  account_v3: /fapi/v3
  exchange: /api/v1
  rollup: /rollup
pagination:
  style: cursor
  evidence: PaginatedResponse_* schemas and cursor fields on User Data (Beta) endpoints
  params: [limit, startTime, endTime, cursor]
timestamps:
  unit: microseconds since Unix epoch (16 digits)
  note: >-
    Binance uses milliseconds (13 digits); divide Bullet timestamps by 1,000 to convert to Binance format.
error_envelope:
  media_type: application/json
  shape: '{ status, message, error_id, details }'
  ref: errors/bullet-problem-types.yml
idempotency:
  supported: false
  note: >-
    No documented idempotent-replay contract. Orders accept an optional user-defined u64
    client_order_id (returned in order updates and usable for cancels), and unsigned transactions
    carry a uniqueness field, but neither is documented as a request-dedup / idempotency key.
transaction_signing:
  flow: build call message -> wrap in UnsignedTransaction (call + uniqueness + tx details) -> sign borsh(unsigned_tx) ++ chain_hash (ed25519) -> wrap in SignedTransaction -> base64 -> POST /tx/submit or WebSocket
  prerequisites: GET /fapi/v1/exchangeInfo for chainInfo.chainId, chainHash, and the symbols/marketId map
  ref: https://tradingapi.bullet.xyz/docs/tx-signing.html
streaming:
  websocket: 'wss://<host>/ws'
  model: subscription streams with ping/pong keepalive; JSON messages
  ref: https://tradingapi.bullet.xyz/docs/ws/
rate_limits:
  signaled: true
  note: Dedicated GET /fapi/v1/rateLimit/order endpoint; HTTP 501 is returned as "User rate limit".