> For the complete documentation index, see [llms.txt](https://teos-docs.coreledger.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://teos-docs.coreledger.net/guides/controllers/create-a-controller.md).
# Create a controller
Controllers are blockchain-level entities that manage access rights to assets, allowing you to restrict who can buy, sell, or trade them.
This endpoint creates a new controller. It allows you to specify the controller’s Name, Description, and Issuer Address, enabling the creation of a controller that can manage access permissions for assets on the blockchain.
📘 Learn more about [controllers](/resources/using-the-teos-api/concepts/controllers.md).
#### Request Endpoint:
```http
POST /odata/v1.0/Controllers/Create
```
**Parameters:**\
No query parameters.
#### Request Body:
`application/json` — The model containing information for creating the controller.
#### Mandatory fields in body:
| **Parameter** | **Type** | **Description** | **Mandatory** |
| ------------- | -------- | ------------------------------------------------------------------------------ | ------------- |
| Name | string | Name of the controller | ✅ |
| IssuerAddress | string | Blockchain address of the issuer | ✅ |
| CreatedBy | string | ID of the user creating the controller (optional, used if API key is provided) | ❌ |
| Description | string | Description of the controller | ❌ |
#### Example Request Body:
In EVM-compatible networks (e.g., Sparknet, Ethereum, and Polygon), the "IssuerAddress" is 42 characters long. In non-EVM networks, the address length may differ. For example, on Internet Computer, it is 63 characters.
```json
{
"Name": "Test name",
"Description": "Test description",
"IssuerAddress": "0x128363b39f249b615d88b9dd2115b134a3b042be",
"CreatedBy": "70647697-15c6-454d-8b34-638c8f68c79f"
}
```
#### Response Body:
`application/json` — Returns the created controller with transaction details.
| **Parameter** | **Type** | **Description** |
| ----------------------- | -------- | -------------------------------------------------- |
| Id | string | Controller ID |
| State | string | Transaction state |
| BlockchainTransactionId | string | ID of the transaction in blockchain |
| Type | string | Type of transaction |
| OnCreated | datetime | Timestamp when transaction was created |
| OnUpdated | datetime | Timestamp when transaction was updated |
| OnSubmitted | datetime | Timestamp when transaction was submitted |
| OnCommitted | datetime | Timestamp when transaction was committed |
| OnConfirmed | datetime | Timestamp when transaction was confirmed |
| OnRevokedByBlockchain | datetime | Timestamp if transaction was revoked by blockchain |
| OnRevokedByUser | datetime | Timestamp if transaction was revoked by user |
| OnRevokedByTxServer | datetime | Timestamp if transaction was revoked by TxServer |
| SignedBy | string | Address of signer |
| CreatedBy | string | ID of user who created the transaction |
| GasPrice | string | Gas price used for transaction |
| GasUsed | string | Gas used for transaction |
| DataAsJson | string | Transaction data in JSON format |
| SigningParametersAsJson | string | Parameters used for signing in JSON format |
#### Example Response Body:
```json
{
"Id": "C0D34D73-6FD3-40F2-A7E1-08D9412448F7",
"State": "3",
"BlockchainTransactionId": "0x748ac47e7226cae0e4e13373375f33ab9e4d43ef29d85d233162a7e7e913703b",
"Type": "ActivateAsset",
"OnCreated": "2025-10-10T09:46:11.224Z",
"OnUpdated": "2025-10-10T09:46:11.224Z",
"OnSubmitted": "2025-10-10T09:46:11.224Z",
"OnCommitted": "2025-10-10T09:46:11.224Z",
"OnConfirmed": "2025-10-10T09:46:11.224Z",
"OnRevokedByBlockchain": "2025-10-10T09:46:11.224Z",
"OnRevokedByUser": "2025-10-10T09:46:11.224Z",
"OnRevokedByTxServer": "2025-10-10T09:46:11.224Z",
"SignedBy": "string",
"CreatedBy": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"GasPrice": "string",
"GasUsed": "string",
"DataAsJson": "string",
"SigningParametersAsJson": "string"
}
```
#### Responses:
| **Code** | **Description** |
| -------- | ----------------------------------------------------------------- |
| 201 | The controller was successfully created |
| 400 | The controller create data is invalid. Error details are included |
| 401 | Unauthorized |
---
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