Error Handling

HTTP vs Business Errors

• Some endpoints return HTTP 200 even when the request fails.
• Always check the response code and treat any non-success code as failure.

Trading Service Error Codes

Trading service errors may use a string code.

Envelope example:

{
  "code": "INVALID_INPUT",
  "message": "token addresses cannot be empty"
}

Input validation:

code	Meaning
INVALID_INPUT	Missing field / invalid format
INVALID_TOKEN	Invalid or unsupported token address
INVALID_AMOUNT	Invalid amount (non-positive / non-integer wei / format)
INVALID_PAIR	Unsupported or missing pair
INVALID_DEADLINE	Invalid deadline/expiry

Business errors:

code	Meaning
QUOTE_EXPIRED	Quote expired
INSUFFICIENT_LIQUIDITY	Not enough liquidity
NO_QUOTES	No quotes available
SLIPPAGE_EXCEEDED	Slippage check failed

System errors:

code	Meaning
INTERNAL_ERROR	Internal error
DATABASE_ERROR	Database error
REDIS_ERROR	Redis error
KAFKA_ERROR	Kafka error
SIGNING_ERROR	Signing-related error
TIMEOUT_ERROR	Timeout

Market Data Error Codes

Market data endpoints use numeric code.

code	Meaning
10000	Success
10095	Invalid parameters
20003	Internal service error
20004	Not found (e.g. pair not found)