---
title: "Activate pending subkey"
method: POST
path: "/account/keys/subkeys/activate"
tags: ["Subkey"]
---

# Activate pending subkey

`POST /account/keys/subkeys/activate`

Activate a pending subkey by providing a Starknet signature
over `pedersen(timestamp, eph_public_key)`.

## Request body

- RequestsActivateSubkey
  - `account_id` string, required — Account ID that the pending subkey belongs to.
  - `name` string — Optional: New name for the subkey upon activation.
  - `public_key` string, required — Public key of the pending subkey to activate.
  - `signature` string[], required — Starknet signature [r, s] over pedersen(timestamp, eph_public_key).
  - `timestamp` integer, required — Unix timestamp (seconds) included in signed message.

## Response `200`

OK

- RequestsActivateSubkeyResponse
  - `encrypted_key` string — Encrypted private key returned to client.

## Other responses

- `400` — Bad Request
- `403` — Forbidden
- `404` — Not Found

## Changes

- **2026-07-17** `f1370c46e9e8` — 9 warning
  - added the new `BLOCK_TRADE_REPLAYED_SIGNATURE` enum value to the `error/allOf[#/components/schemas/responses.ErrorCode]/` response property for the response status `400`
  - added the new `BLOCK_TRADE_REPLAYED_SIGNATURE` enum value to the `error/allOf[#/components/schemas/responses.ErrorCode]/` response property for the response status `403`
  - added the new `BLOCK_TRADE_REPLAYED_SIGNATURE` enum value to the `error/allOf[#/components/schemas/responses.ErrorCode]/` response property for the response status `404`
  - added the new `EVM_VAULT_OPERATORS_DISABLED` enum value to the `error/allOf[#/components/schemas/responses.ErrorCode]/` response property for the response status `400`
  - …5 more
- **2026-06-09** `43b81de9b079` — 9 info
  - removed the `INVALID_RHINOFI_QUOTE` enum value from the `error/allOf[#/components/schemas/responses.ErrorCode]/` response property for the response status `400`
  - removed the `INVALID_RHINOFI_QUOTE` enum value from the `error/allOf[#/components/schemas/responses.ErrorCode]/` response property for the response status `403`
  - removed the `INVALID_RHINOFI_QUOTE` enum value from the `error/allOf[#/components/schemas/responses.ErrorCode]/` response property for the response status `404`
  - removed the `INVALID_RHINOFI_QUOTE_COMMIT` enum value from the `error/allOf[#/components/schemas/responses.ErrorCode]/` response property for the response status `400`
  - …5 more
- …earlier changes not shown

[Full history](https://skmtc.dev/tradeparadex/apis/paradex-rest-api-2/changes/account/keys/subkeys/activate/post.md)

---

[API](https://skmtc.dev/tradeparadex/apis/paradex-rest-api-2.md) · [All operations](https://skmtc.dev/tradeparadex/apis/paradex-rest-api-2/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/tradeparadex/paradex-rest-api-2/revisions/a73698fdee53/schema)