---
title: "Links a signer address with the sender address for order delegation"
method: POST
path: "/v1/linked-signer/link"
tags: ["LinkedSigner"]
---

# Links a signer address with the sender address for order delegation

`POST /v1/linked-signer/link`

## Request body

- LinkSignerDto
  - `data` LinkSignerDtoData, required
    - `category` 'TRADE_SESSION' | 'API' — Category of the linked signer: TRADE_SESSION or API
    - `name` string — Optional name for the linked signer
    - `nonce` string, required — Message nonce timestamp (nanoseconds since Unix Epoch)
    - `sender` string, hex, required — Account address that produced the authorizing signature
    - `signedAt` integer, required — Message signedAt current timestamp (seconds since Unix Epoch)
    - `signer` string, hex, required — Address of signer to allowed for delegated signing
    - `subaccount` string, hex, required — Bytes32 encoded subaccount name (0x prefix, zero padded)
    - `subaccountId` string, uuid, required — Id representing the registered subaccount
  - `signature` string, hex, required — Hex-encoded EIP-712 signature authorizing this request
  - `signerSignature` string, hex, required — Hex-encoded EIP-712 signature authorizing this request

## Response `201`

- SignerDto
  - `blockNumber` string — Block number the signer has been linked on. Undefined means it has not be processed
  - `category` 'TRADE_SESSION' | 'API' — Category of the linked signer: API or TRADE_SESSION
  - `createdAt` integer, required — Link signer submission timestamp (ms since Unix Epoch)
  - `expiresAt` integer, required — Signer expiry timestamp (ms since Unix Epoch)
  - `id` string, required — Id representing the linked signer
  - `linkedAt` integer — Onchain linkage timestamp (ms since Unix Epoch)
  - `name` string — Optional name for the linked signer
  - `revokedAt` integer — Onchain revocation timestamp (ms since Unix Epoch)
  - `revokedBlockNumber` string — Block number the signer has been revoked on. Undefined means it has not be processed
  - `signer` string, hex, required — Address of the signer linked with the subaccount (non-checksummed)
  - `status` 'PENDING' | 'ACTIVE' | 'PENDING_REVOKE' | 'REVOKED' | 'REJECTED', required — Status of the signer

## Other responses

- `400` — Bad Request
- `401` — Unauthorized
- `403` — Forbidden
- `404` — Not Found
- `422` — Unprocessable Entity
- `429` — Too Many Requests
- `500` — Internal Server Error

---

[API](https://skmtc.net/ethereal/apis/ethereal-exchange-api.md) · [All operations](https://skmtc.net/ethereal/apis/ethereal-exchange-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/ethereal/ethereal-exchange-api/revisions/6e6f8dad92bf/schema)