> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://onepin.ai/docs/reference/api-reference/templates/update-template-api-v-1-templates-template-id-patch/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://onepin.ai/_mcp/server.

# Update Template

PATCH https://api.onepin.ai/api/v1/templates/{template_id}
Content-Type: application/json

Update a template owned by the caller's workspace.

All fields are optional (omit to keep the stored value). When `definition`
is supplied it is a full replace — send the complete graph, not a partial
diff. Structural validation runs on write, same as `POST /templates`.

Restrictions:
- Only the owning workspace may update its templates (403 otherwise).
- Platform starter templates (`is_starter=true`) are read-only via this
  endpoint regardless of workspace ownership (403).
- Updates apply only to the draft/live definition; the published gallery
  snapshot is not updated until an admin republishes.

Requires workspace `editor` role or higher.

Reference: https://onepin.ai/docs/reference/api-reference/templates/update-template-api-v-1-templates-template-id-patch

## Authentication

- `Authorization` header (bearer token, required) — Clerk JWT token

## Servers

- `https://api.onepin.ai` (prod, default)
- `https://dev-api.onepin.ai` (dev)

## Request

### Path parameters

- `template_id` (string, required) — Case-sensitive 8-character base62 template identifier.

### Headers

- `X-Workspace-Id` (string, optional, nullable)

### Body (application/json)

This endpoint expects a TemplateUpdate.

- `name` (string, optional, nullable)
- `description` (string, optional, nullable)
- `category` (enum, optional, nullable)
  - Allowed values: `media`, `creative`, `business`, `education`, `wellness`
- `definition` (WorkflowDefinition-Input, optional, nullable) — Full-replace on PATCH. Omit to keep the stored value. Explicit `null` is rejected — there is no 'empty graph' use-case worth the ambiguity. The union with `null` here only makes omission easy for FE clients; see `reject_null_definition` for the runtime guard.

## Response

### 200

Successful Response

- `data` (TemplateOut, required) — Response shape. `workspace_id` is intentionally omitted so the gallery endpoint (which returns rows from any workspace) does not leak tenant ownership IDs across tenants. `created_by` is retained as author provenance for public/starter rows. `definition` is the serialized `WorkflowDefinition` JSONB (same shape as `Workflow.definition`) — a template is a reusable workflow snapshot.
- `meta` (Meta, required)

## Errors

### 422 Unprocessable Entity Error

Validation Error

- `detail` (list of ValidationError, optional)

## Types

### WorkflowDefinition-Input

- `graph` (GraphDefinition-Input, optional)
- `execution` (ExecutionDefinition, optional)

### TemplateOut

Response shape. `workspace_id` is intentionally omitted so the gallery endpoint (which returns rows from any workspace) does not leak tenant ownership IDs across tenants. `created_by` is retained as author provenance for public/starter rows. `definition` is the serialized `WorkflowDefinition` JSONB (same shape as `Workflow.definition`) — a template is a reusable workflow snapshot.

- `id` (string, required) — Case-sensitive 8-character base62 template identifier.
- `name` (string, required) — Display name of the template.
- `definition` (WorkflowDefinition-Output, required) — Full workflow definition (graph + execution config). Use this directly as the `definition` body when creating a workflow from scratch, or clone via `POST /templates/{id}/clone`.
- `is_starter` (boolean, required) — `true` for platform-curated starter templates. Starter templates cannot be updated or deleted.
- `is_public` (boolean, required) — `true` when this template has an active published snapshot visible in the gallery.
- `uses_count` (integer, required) — Number of times this template has been cloned into a workflow.
- `created_at` (datetime, required)
- `updated_at` (datetime, required) — Last-modified timestamp. For gallery rows this reflects the most recent publish; for own-workspace rows it reflects the most recent draft save.
- `description` (string, optional, nullable) — Optional human-readable description.
- `category` (enum, optional, nullable) — Gallery category tag, if set.
  - Allowed values: `media`, `creative`, `business`, `education`, `wellness`
- `is_favorite` (boolean, optional, default: false) — `true` when the authenticated caller has favorited this template.
- `created_by` (string, optional, nullable) — User ID of the template author.

### Meta

- `request_id` (string, required)
- `timestamp` (datetime, required)

### ValidationError

- `loc` (list of ValidationErrorLocItems, required)
- `msg` (string, required)
- `type` (string, required)
- `input` (any, optional)
- `ctx` (ValidationErrorCtx, optional)

### GraphDefinition-Input

- `nodes` (list of GraphNode, optional)
- `edges` (list of GraphEdge, optional)

### ExecutionDefinition

- `steps` (list of string, optional)
- `params` (map from string to any, optional)

### WorkflowDefinition-Output

- `graph` (GraphDefinition-Output, optional)
- `execution` (ExecutionDefinition, optional)

### ValidationErrorLocItems

### ValidationErrorCtx

### GraphNode

- `id` (string, required)
- `type` (enum, required)
  - Allowed values: `source_script`, `operator_translator`, `operator_normalizer`, `operator_generator`, `operator_phoneme_injector`, `sink_preview`, `validator_error_rate`, `validator_naturalness`, `validator_noise`, `validator_pronunciation`, `operator_pronunciation_corrector`
- `position` (NodePosition, required)
- `name` (string, optional, nullable)
- `config` (map from string to any, optional)
- `config_version` (integer, optional, default: 1)

### GraphEdge

- `id` (string, required)
- `source` (string, required)
- `sourcePort` (string, required)
- `target` (string, required)
- `targetPort` (string, required)

### GraphDefinition-Output

- `nodes` (list of GraphNode, optional)
- `edges` (list of GraphEdge, optional)

### NodePosition

- `x` (double, required)
- `y` (double, required)

## Examples

**Request**

```json
{}
```

**Response**

```json
{
  "data": {
    "id": "string",
    "name": "string",
    "definition": {
      "graph": {
        "nodes": [
          {
            "id": "string",
            "type": "source_script",
            "position": {
              "x": 1.1,
              "y": 1.1
            },
            "name": "string",
            "config": {},
            "config_version": 1
          }
        ],
        "edges": [
          {
            "id": "string",
            "source": "string",
            "sourcePort": "string",
            "target": "string",
            "targetPort": "string"
          }
        ]
      },
      "execution": {
        "steps": [
          "string"
        ],
        "params": {}
      }
    },
    "is_starter": true,
    "is_public": true,
    "uses_count": 1,
    "created_at": "2024-01-15T09:30:00Z",
    "updated_at": "2024-01-15T09:30:00Z",
    "description": "string",
    "category": "media",
    "is_favorite": false,
    "created_by": "string"
  },
  "meta": {
    "request_id": "string",
    "timestamp": "2024-01-15T09:30:00Z"
  }
}
```

**SDK Code**

```python
import requests

url = "https://api.onepin.ai/api/v1/templates/template_id"

payload = {}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.patch(url, json=payload, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.onepin.ai/api/v1/templates/template_id';
const options = {
  method: 'PATCH',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: '{}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.onepin.ai/api/v1/templates/template_id"

	payload := strings.NewReader("{}")

	req, _ := http.NewRequest("PATCH", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.onepin.ai/api/v1/templates/template_id")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{}"

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.patch("https://api.onepin.ai/api/v1/templates/template_id")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{}")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('PATCH', 'https://api.onepin.ai/api/v1/templates/template_id', [
  'body' => '{}',
  'headers' => [
    'Authorization' => 'Bearer <token>',
    'Content-Type' => 'application/json',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.onepin.ai/api/v1/templates/template_id");
var request = new RestRequest(Method.PATCH);
request.AddHeader("Authorization", "Bearer <token>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
]
let parameters = [] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://api.onepin.ai/api/v1/templates/template_id")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "PATCH"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```

> Onepin is a voice workflow platform that orchestrates, validates, and ships production-ready audio across 33 TTS models.