> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.pensar.dev/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.pensar.dev/_mcp/server.

# Update a knowledge entry

PATCH https://api.pensar.dev/knowledge/{entryId}
Content-Type: application/json

Requires a user credential: a workspace API key has no author to attribute the change to and receives `403`. Send at least one field. Changing an `always` entry, or making one, also requires a workspace admin or owner.

Requires the `knowledge:write` API key scope.

Reference: https://docs.pensar.dev/api/api-reference/knowledge-base/update-knowledge

## Authentication

- `Authorization` header (bearer token, required) — A workspace API key, sent as `Authorization: Bearer`.
- `x-api-key` header (required) — A workspace API key, sent as `x-api-key`.

## Request

### Path parameters

- `entryId` (string, required) — Knowledge base entry UUID.

### Body (application/json)

This endpoint expects an UpdateKnowledgeRequest.

- `title` (string, optional)
- `content` (string, optional)
- `category` (enum, optional)
  - Allowed values: `false_positive_pattern`, `technology_context`, `testing_history`, `user_note`, `agent_learning`
- `status` (enum, optional)
  - Allowed values: `active`, `stale`, `archived`
- `priority` (enum, optional) — When agents get the entry; see [Priority](/console/features/knowledge-base#priority).
  - Allowed values: `always`, `on_request`
- `tags` (list of string, optional) — Replaces the existing tags.

## Response

### 200

The updated entry.

- `id` (string, required)
- `title` (string, required)
- `content` (string, required)
- `category` (enum, required)
  - Allowed values: `false_positive_pattern`, `technology_context`, `testing_history`, `user_note`, `agent_learning`
- `status` (enum, required) — Only active entries are given to agents.
  - Allowed values: `active`, `stale`, `archived`
- `priority` (enum, required) — When agents get the entry; see [Priority](/console/features/knowledge-base#priority).
  - Allowed values: `always`, `on_request`
- `source` (enum, required)
  - Allowed values: `user`, `system`, `agent`
- `tags` (list of string, required)
- `confidence` (string, required, nullable)
- `createdBy` (string, required, nullable)
- `createdAt` (datetime, required)
- `updatedAt` (datetime, required)

## Errors

### 400 Bad Request Error

The request is invalid. `error` names the field.

- `error` (string, required) — What went wrong, naming the offending value when useful.

### 401 Unauthorized Error

The API key is missing or invalid.

- `error` (string, required) — What went wrong, naming the offending value when useful.

### 403 Forbidden Error

The credential lacks the required scope or is not allowed this action.

- `error` (string, required) — What went wrong, naming the offending value when useful.

### 404 Not Found Error

The resource does not exist in this workspace.

- `error` (string, required) — What went wrong, naming the offending value when useful.

## Examples

**Request**

```json
{}
```

**Response**

```json
{
  "id": "string",
  "title": "Auth stack",
  "content": "string",
  "category": "false_positive_pattern",
  "status": "active",
  "priority": "always",
  "source": "user",
  "tags": [
    "string"
  ],
  "confidence": "string",
  "createdBy": "string",
  "createdAt": "2024-01-15T09:30:00Z",
  "updatedAt": "2024-01-15T09:30:00Z"
}
```

**SDK Code**

```python
import requests

url = "https://api.pensar.dev/knowledge/entryId"

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.pensar.dev/knowledge/entryId';
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.pensar.dev/knowledge/entryId"

	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.pensar.dev/knowledge/entryId")

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.pensar.dev/knowledge/entryId")
  .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.pensar.dev/knowledge/entryId', [
  'body' => '{}',
  'headers' => [
    'Authorization' => 'Bearer <token>',
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://api.pensar.dev/knowledge/entryId");
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.pensar.dev/knowledge/entryId")! 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()
```