> Call POST /v1/check before a tool that writes. DENY means do not invoke the tool. For clean Markdown of any page, append .md to the page URL. For the complete index, fetch https://docs.withwrit.com/llms.txt.

# Create or update a principal's policy override

PUT https://api.withwrit.com/v1/policies/principals/{principalId}
Content-Type: application/json

API key required. Sets the decision mode for one or more verbs in
one principal's override — the top policy layer, beating the
environment override and the tenant default. The override is
sparse: only the verbs you send are stored; every other verb keeps
inheriting downward. Every successful update bumps that override's
`version` by one — environment and tenant versions are untouched.

Fail closed: configuring policy on a tombstoned or disabled
principal is `400` (`principal_inactive`) — an identity that cannot
authorize checks cannot carry policy either. Disabling or deleting
a principal later makes its override inert (it never supplies a
mode); re-enabling re-arms it. The override data is kept, not
wiped.

Body shapes match `PUT /v1/policies/environments/{env}`, plus
`"inherit"`: sending `{"refund": "inherit"}` removes that verb from
the override so it inherits downward again.

Reference: https://docs.withwrit.com/api-reference/policy/create-or-update-a-principals-policy-override

## Servers

- `https://api.withwrit.com` (Writ gate, default)
- `https://j72ckh66ukck2kcbq3oiwxaalm0olxwb.lambda-url.us-east-1.on.aws` (Direct Lambda Function URL (fallback))

## Request

### Path parameters

- `principalId` (string, required)

### Body (application/json)

This endpoint expects a map from string to enum.

- `map from string to enum`
  - Allowed values: `allow`, `deny`, `require_grant`, `step_up`, `inherit`

## Response

### 200

The updated override plus its effective policy and provenance.

## Errors

### 400 Bad Request Error

Empty body, unknown verbs, unknown modes, or the principal is deleted/disabled.

### 401 Unauthorized Error

API key required — missing, malformed, or unknown key.

- `any`

### 404 Not Found Error

No such principal in this tenant.

- `any`

## Examples

### Policy_createOrUpdateAPrincipalsPolicyOverride_example

**Response**

```json
{
  "effectivePolicy": {
    "admit": "require_grant",
    "prescribe": "require_grant",
    "provision": "require_grant",
    "refund": "step_up",
    "verify": "require_grant",
    "verify_human": "require_grant"
  },
  "environment": null,
  "policy": {
    "refund": "step_up"
  },
  "policyId": "pol_ten_3fa8b91c2d44_prn_prn_9d2f4a1b2c3d",
  "policyProvenance": {
    "refund": "principal",
    "verify": "tenant"
  },
  "principalId": "prn_9d2f4a1b2c3d",
  "principalName": "billing",
  "scope": "principal",
  "tenantId": "ten_3fa8b91c2d44",
  "updatedAt": 1759000300,
  "version": 3
}
```

**SDK Code**

```python Policy_createOrUpdateAPrincipalsPolicyOverride_example
import requests

url = "https://api.withwrit.com/v1/policies/principals/principalId"

response = requests.put(url)

print(response.json())
```

```javascript Policy_createOrUpdateAPrincipalsPolicyOverride_example
const url = 'https://api.withwrit.com/v1/policies/principals/principalId';
const options = {method: 'PUT'};

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

```go Policy_createOrUpdateAPrincipalsPolicyOverride_example
package main

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

func main() {

	url := "https://api.withwrit.com/v1/policies/principals/principalId"

	req, _ := http.NewRequest("PUT", url, nil)

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

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

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

}
```

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

url = URI("https://api.withwrit.com/v1/policies/principals/principalId")

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

request = Net::HTTP::Put.new(url)

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

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

HttpResponse<String> response = Unirest.put("https://api.withwrit.com/v1/policies/principals/principalId")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('PUT', 'https://api.withwrit.com/v1/policies/principals/principalId');

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

```csharp Policy_createOrUpdateAPrincipalsPolicyOverride_example
using RestSharp;

var client = new RestClient("https://api.withwrit.com/v1/policies/principals/principalId");
var request = new RestRequest(Method.PUT);
IRestResponse response = client.Execute(request);
```

```swift Policy_createOrUpdateAPrincipalsPolicyOverride_example
import Foundation

let request = NSMutableURLRequest(url: NSURL(string: "https://api.withwrit.com/v1/policies/principals/principalId")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "PUT"

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()
```

### bare

**Request**

```json
{
  "refund": "step_up"
}
```

**Response**

```json
{
  "effectivePolicy": {
    "admit": "require_grant",
    "prescribe": "require_grant",
    "provision": "require_grant",
    "refund": "step_up",
    "verify": "require_grant",
    "verify_human": "require_grant"
  },
  "environment": null,
  "policy": {
    "refund": "step_up"
  },
  "policyId": "pol_ten_3fa8b91c2d44_prn_prn_9d2f4a1b2c3d",
  "policyProvenance": {
    "refund": "principal",
    "verify": "tenant"
  },
  "principalId": "prn_9d2f4a1b2c3d",
  "principalName": "billing",
  "scope": "principal",
  "tenantId": "ten_3fa8b91c2d44",
  "updatedAt": 1759000300,
  "version": 3
}
```

**SDK Code**

```python bare
import requests

url = "https://api.withwrit.com/v1/policies/principals/principalId"

payload = { "refund": "step_up" }
headers = {"Content-Type": "application/json"}

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

print(response.json())
```

```javascript bare
const url = 'https://api.withwrit.com/v1/policies/principals/principalId';
const options = {
  method: 'PUT',
  headers: {'Content-Type': 'application/json'},
  body: '{"refund":"step_up"}'
};

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

```go bare
package main

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

func main() {

	url := "https://api.withwrit.com/v1/policies/principals/principalId"

	payload := strings.NewReader("{\n  \"refund\": \"step_up\"\n}")

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

	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 bare
require 'uri'
require 'net/http'

url = URI("https://api.withwrit.com/v1/policies/principals/principalId")

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

request = Net::HTTP::Put.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"refund\": \"step_up\"\n}"

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

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

HttpResponse<String> response = Unirest.put("https://api.withwrit.com/v1/policies/principals/principalId")
  .header("Content-Type", "application/json")
  .body("{\n  \"refund\": \"step_up\"\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('PUT', 'https://api.withwrit.com/v1/policies/principals/principalId', [
  'body' => '{
  "refund": "step_up"
}',
  'headers' => [
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp bare
using RestSharp;

var client = new RestClient("https://api.withwrit.com/v1/policies/principals/principalId");
var request = new RestRequest(Method.PUT);
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"refund\": \"step_up\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift bare
import Foundation

let headers = ["Content-Type": "application/json"]
let parameters = ["refund": "step_up"] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.withwrit.com/v1/policies/principals/principalId")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "PUT"
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()
```

### wrapped

**Request**

```json
{
  "policy": {
    "provision": "inherit",
    "refund": "step_up"
  }
}
```

**Response**

```json
{
  "effectivePolicy": {
    "admit": "require_grant",
    "prescribe": "require_grant",
    "provision": "require_grant",
    "refund": "step_up",
    "verify": "require_grant",
    "verify_human": "require_grant"
  },
  "environment": null,
  "policy": {
    "refund": "step_up"
  },
  "policyId": "pol_ten_3fa8b91c2d44_prn_prn_9d2f4a1b2c3d",
  "policyProvenance": {
    "refund": "principal",
    "verify": "tenant"
  },
  "principalId": "prn_9d2f4a1b2c3d",
  "principalName": "billing",
  "scope": "principal",
  "tenantId": "ten_3fa8b91c2d44",
  "updatedAt": 1759000300,
  "version": 3
}
```

**SDK Code**

```python wrapped
import requests

url = "https://api.withwrit.com/v1/policies/principals/principalId"

payload = { "policy": {
        "provision": "inherit",
        "refund": "step_up"
    } }
headers = {"Content-Type": "application/json"}

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

print(response.json())
```

```javascript wrapped
const url = 'https://api.withwrit.com/v1/policies/principals/principalId';
const options = {
  method: 'PUT',
  headers: {'Content-Type': 'application/json'},
  body: '{"policy":{"provision":"inherit","refund":"step_up"}}'
};

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

```go wrapped
package main

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

func main() {

	url := "https://api.withwrit.com/v1/policies/principals/principalId"

	payload := strings.NewReader("{\n  \"policy\": {\n    \"provision\": \"inherit\",\n    \"refund\": \"step_up\"\n  }\n}")

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

	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 wrapped
require 'uri'
require 'net/http'

url = URI("https://api.withwrit.com/v1/policies/principals/principalId")

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

request = Net::HTTP::Put.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"policy\": {\n    \"provision\": \"inherit\",\n    \"refund\": \"step_up\"\n  }\n}"

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

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

HttpResponse<String> response = Unirest.put("https://api.withwrit.com/v1/policies/principals/principalId")
  .header("Content-Type", "application/json")
  .body("{\n  \"policy\": {\n    \"provision\": \"inherit\",\n    \"refund\": \"step_up\"\n  }\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('PUT', 'https://api.withwrit.com/v1/policies/principals/principalId', [
  'body' => '{
  "policy": {
    "provision": "inherit",
    "refund": "step_up"
  }
}',
  'headers' => [
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp wrapped
using RestSharp;

var client = new RestClient("https://api.withwrit.com/v1/policies/principals/principalId");
var request = new RestRequest(Method.PUT);
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"policy\": {\n    \"provision\": \"inherit\",\n    \"refund\": \"step_up\"\n  }\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift wrapped
import Foundation

let headers = ["Content-Type": "application/json"]
let parameters = ["policy": [
    "provision": "inherit",
    "refund": "step_up"
  ]] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.withwrit.com/v1/policies/principals/principalId")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "PUT"
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()
```