> ## Documentation Index > Fetch the complete documentation index at: https://developers.circle.com/llms.txt > Use this file to discover all available pages before exploring further. # Derive a wallet > Derives an EOA (Externally Owned Account) or SCA (Smart Contract Account) wallet using the address of the specified wallet and blockchain. If the target wallet already exists, its metadata will be updated with the provided metadata. This operation is only supported for EVM-based blockchains. ## OpenAPI ````yaml openapi/developer-controlled-wallets.yaml put /v1/w3s/developer/wallets/{id}/blockchains/{blockchain} openapi: 3.0.3 info: version: '1.0' title: Developer-Controlled Wallets description: Developer-Controlled Wallets API documentation. servers: - url: https://api.circle.com security: - BearerAuth: [] tags: - name: Wallet Sets - name: Wallets - name: Signing - name: Transactions - name: Token Lookup paths: /v1/w3s/developer/wallets/{id}/blockchains/{blockchain}: put: tags: - Wallets summary: Derive a wallet description: >- Derives an EOA (Externally Owned Account) or SCA (Smart Contract Account) wallet using the address of the specified wallet and blockchain. If the target wallet already exists, its metadata will be updated with the provided metadata. This operation is only supported for EVM-based blockchains. operationId: deriveWallet parameters: - $ref: '#/components/parameters/Id' - $ref: '#/components/parameters/XRequestId' - description: The unique identifier of the blockchains. name: blockchain in: path required: true schema: $ref: '#/components/schemas/EvmBlockchain' requestBody: $ref: '#/components/requestBodies/DeriveWallet' responses: '200': description: Successfully updated the metadata for an existing wallet. content: application/json: schema: $ref: '#/components/schemas/WalletResponse' headers: X-Request-Id: $ref: '#/components/headers/XRequestId' '201': description: The derived wallet was successfully created. content: application/json: schema: $ref: '#/components/schemas/WalletResponse' headers: X-Request-Id: $ref: '#/components/headers/XRequestId' '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/NotAuthorized' '404': $ref: '#/components/responses/NotFound' security: - BearerAuth: [] components: parameters: Id: name: id description: The universally unique identifier of the resource. in: path required: true schema: type: string format: uuid example: b3d9d2d5-4c12-4946-a09d-953e82fae2b0 XRequestId: name: X-Request-Id in: header description: > Developer-provided identifier for this request, used for tracing requests in Wallets API logs and the Developer Console, and when communicating with Circle Support. **Must be a UUID to appear in logs.** Non-UUID values are accepted by the API but are ignored by logging and tracing systems. schema: $ref: '#/components/schemas/XRequestId' schemas: EvmBlockchain: type: string description: >- The blockchain network that the resource is to be created on or is currently on. enum: - ETH - ETH-SEPOLIA - AVAX - AVAX-FUJI - MATIC - MATIC-AMOY - ARB - ARB-SEPOLIA - UNI - UNI-SEPOLIA - BASE - BASE-SEPOLIA - OP - OP-SEPOLIA - EVM - EVM-TESTNET - ARC-TESTNET - MONAD - MONAD-TESTNET example: MATIC-AMOY WalletResponse: title: WalletResponse type: object required: - data properties: data: type: object required: - wallet properties: wallet: oneOf: - $ref: '#/components/schemas/EOAWallet' - $ref: '#/components/schemas/SCAWallet' discriminator: propertyName: accountType XRequestId: type: string format: uuid description: >- A unique identifier, which can be helpful for identifying a request when communicating with Circle support. example: 2adba88e-9d63-44bc-b975-9b6ae3440dde WalletMetadata: type: object properties: name: $ref: '#/components/schemas/Name' refId: $ref: '#/components/schemas/ReferenceId' EOAWallet: title: EOAWallet allOf: - $ref: '#/components/schemas/Wallet' - type: object required: - accountType properties: accountType: type: string description: > An account can be a Smart Contract Account (SCA) or an Externally Owned Account (EOA). To learn more, see the [account types guide](https://developers.circle.com/wallets/account-types). If an account type is not specified during the creation of a wallet, it defaults to `EOA` (Externally Owned Account). Note that Solana and Aptos don't support Smart Contract Account (SCA). enum: - EOA SCAWallet: title: SCAWallet allOf: - $ref: '#/components/schemas/Wallet' - type: object required: - accountType - scaCore properties: accountType: type: string description: > An account can be a Smart Contract Account (SCA) or an Externally Owned Account (EOA). To learn more, see the [account types guide](https://developers.circle.com/wallets/account-types). If an account type is not specified during the creation of a wallet, it defaults to `EOA` (Externally Owned Account). Note that Solana and Aptos don't support Smart Contract Account (SCA). enum: - SCA scaCore: $ref: '#/components/schemas/ScaCore' Name: type: string description: Name or description associated with the wallet or walletSet. ReferenceId: type: string description: >- Optional user-defined reference identifier for the wallet. Not used by Circle for wallet functionality. Used for internal tracking or associating wallets with entities in your own systems (for example, a customer or account ID). example: customer_12345 Wallet: type: object required: - id - state - walletSetId - custodyType - address - blockchain - createDate - updateDate properties: id: $ref: '#/components/schemas/Id' address: $ref: '#/components/schemas/Address' blockchain: $ref: '#/components/schemas/Blockchain' createDate: $ref: '#/components/schemas/CreateDate' updateDate: $ref: '#/components/schemas/UpdateDate' custodyType: $ref: '#/components/schemas/CustodyType' name: $ref: '#/components/schemas/Name' refId: $ref: '#/components/schemas/ReferenceId' state: $ref: '#/components/schemas/WalletState' userId: $ref: '#/components/schemas/ExternalUserId' walletSetId: $ref: '#/components/schemas/Id' initialPublicKey: $ref: '#/components/schemas/InitialPublicKey' ScaCore: type: string description: >- SCAs have different versions, each with unique functionality. `SCACore` displays the version of the SCA being created. For a list of supported versions, refer to the developer documentation. enum: - circle_4337_v1 - circle_6900_singleowner_v1 - circle_6900_singleowner_v2 - circle_6900_singleowner_v3 example: circle_6900_singleowner_v2 Id: type: string format: uuid description: System-generated unique identifier of the resource. example: c4d1da72-111e-4d52-bdbf-2e74a2d803d5 Address: title: Address description: > Blockchain generated unique identifier, associated with wallet (account), smart contract or other blockchain objects. type: string example: '0xca9142d0b9804ef5e239d3bc1c7aa0d1c74e7350' Blockchain: type: string description: >- The blockchain network that the resource is to be created on or is currently on. enum: - ETH - ETH-SEPOLIA - AVAX - AVAX-FUJI - MATIC - MATIC-AMOY - SOL - SOL-DEVNET - ARB - ARB-SEPOLIA - NEAR - NEAR-TESTNET - EVM - EVM-TESTNET - UNI - UNI-SEPOLIA - BASE - BASE-SEPOLIA - OP - OP-SEPOLIA - APTOS - APTOS-TESTNET - ARC-TESTNET - MONAD - MONAD-TESTNET example: MATIC-AMOY CreateDate: type: string format: date-time description: Date and time the resource was created, in ISO-8601 UTC format. example: '2023-01-01T12:04:05Z' UpdateDate: type: string format: date-time description: Date and time the resource was last updated, in ISO-8601 UTC format. example: '2023-01-01T12:04:05Z' CustodyType: type: string description: > Describes who controls the digital assets in a wallet: either the end-user or the developer. enum: - DEVELOPER - ENDUSER WalletState: type: string description: This enum describes the current state of the wallet. enum: - LIVE - FROZEN example: LIVE ExternalUserId: type: string description: Unique system generated identifier for the user. example: ext_user_id_1 maxLength: 50 minLength: 5 InitialPublicKey: type: string description: >- For NEAR blockchains only, the originally assigned public key of a wallet at the time of its creation. example: 3eQoJ3ex6uWX3R8F1THF6Y6oBQwPYpF1X9HBM1gjqw7w requestBodies: DeriveWallet: content: application/json: schema: type: object properties: metadata: $ref: '#/components/schemas/WalletMetadata' description: Defines the request payload schema for deriving a new wallet. required: false headers: XRequestId: description: > Developer-provided header parameter or Circle-generated universally unique identifier (UUID v4). Useful for identifying a specific request when communicating with Circle Support. schema: $ref: '#/components/schemas/XRequestId' responses: BadRequest: content: application/json: schema: type: object title: BadRequestResponse required: - code - message properties: code: type: integer description: Code that corresponds to the error. message: type: string description: Message that describes the error. example: code: 400 message: Bad request. description: Request cannot be processed due to a client error. headers: X-Request-Id: $ref: '#/components/headers/XRequestId' NotAuthorized: content: application/json: schema: type: object title: NotAuthorizedResponse required: - code - message properties: code: type: integer description: Code that corresponds to the error. message: type: string description: Message that describes the error. example: code: 401 message: Malformed authorization. description: >- Request has not been applied because it lacks valid authentication credentials. headers: X-Request-Id: $ref: '#/components/headers/XRequestId' NotFound: content: application/json: schema: type: object title: NotFoundResponse required: - code - message properties: code: type: integer description: Code that corresponds to the error. message: type: string description: Message that describes the error. example: code: 404 message: Not found. description: Specified resource was not found. headers: X-Request-Id: $ref: '#/components/headers/XRequestId' securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: PREFIX:ID:SECRET description: >- Circle's API Keys are formatted in the following structure "PREFIX:ID:SECRET". All three parts are required to make a successful request. ````