---
title: "POST /v4/auth/link/wallet"
method: POST
path: "/v4/auth/link/wallet"
tags: ["Authentication"]
---

# POST /v4/auth/link/wallet

`POST /v4/auth/link/wallet`

Link a wallet to the current (Google) session — collapses both into one wallet identity.

## Cookies

- `jwt` string

## Request body

- object
  - `address` string, required
  - `message` string, required
  - `signature` string, required
  - `chainId` number — Chain ID of the wallet

## Response `200`

Response for status 200

- object
  - `success` boolean, required — Whether login was successful
  - `token` string — JWT token for Authorization header — only returned in development for cross-site cookie fallback

---

[API](https://skmtc.dev/merkl/apis/merkl-api.md) · [All operations](https://skmtc.dev/merkl/apis/merkl-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/merkl/merkl-api/revisions/a7e5b9f6fb5f/schema)