Retrieve Meta-Transaction Nonce

Endpoint

GET /nonce

Server: https://api.openfish.fun

Authentication: None required

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Query Parameters

Parameter	Type	Required	Description	Example
address	string	Yes	Ethereum address (^0x[a-fA-F0-9]{40}$)	0x77837466dd64fb52ECD00C737F060d0ff5CCB575
type	string	No	Relay type: "PROXY" or "SAFE" (default: "PROXY")	PROXY

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Responses

200 — Nonce returned

{
  "nonce": "31"
}

Note: The nonce is returned as a string for consistency with Polymarket’s API.

Schema (NonceResponse):

Field	Type	Description
nonce	integer	The current meta-transaction nonce. A value of 0 indicates no transactions have been submitted yet.

400 — Bad Request

{ "error": "invalid address" }

500 — Server Error

{ "error": "Internal server error" }