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

# List files

GET https://api.bctrl.ai/v1/files

List the canonical durable File resource. Runtime file endpoints operate on a live machine disk: collect turns a machine file into a durable File, while stage performs the reverse. Use source, type, runId, runtimeId, path, prefix, and createdAfter filters here.

Reference: https://platform.bctrl.ai/api/api-reference/files/list

## Authentication

- `Authorization` header (bearer token, required) — Use Bearer \<api-key>.

## Servers

- `https://api.bctrl.ai` (Production, default)
- `http://localhost:8787` (Local development gateway)

## Request

### Query parameters

- `spaceId` (string, optional) — Filter by a prefixed space ID, or pass `default` to use the caller default space.
- `source` (enum, optional)
  - Allowed values: `upload`, `runtime`
- `path` (string, optional)
- `prefix` (string, optional)
- `q` (string, optional)
- `runId` (string, optional)
- `runtimeId` (string, optional)
- `type` (list of string, optional) — Filter by one or more file artifact types. Repeat the query parameter for multiple values.
- `createdAfter` (datetime, optional) — RFC 3339 timestamp with a UTC offset.
- `include` (enum, optional)
  - Allowed values: `folders`
- `cursor` (string, optional)
- `limit` (integer, optional, default: 50)

### Headers

- `BCTRL-Subaccount-Id` (string, optional) — Optional effective subaccount context for organization API keys. Subaccount API keys are already scoped and cannot use this header to act as another subaccount.

## Response

### 200

OK

- `data` (list of object, required)
  - `contentType` (string, required)
  - `createdAt` (datetime, required) — RFC 3339 timestamp with a UTC offset.
  - `downloadUrl` (string, required)
  - `id` (string, required) — Unique file identifier generated by BCTRL.
  - `name` (string, required) — Customer-facing resource name. 1–200 characters.
  - `path` (string, required)
  - `sizeBytes` (integer, required) — Non-negative number of bytes.
  - `source` (enum, required)
    - Allowed values: `upload`, `runtime`
  - `spaceId` (string, required) — Unique space identifier generated by BCTRL.
  - `expiresAt` (datetime, optional) — RFC 3339 timestamp with a UTC offset.
  - `metadata` (object, optional, nullable)
  - `runId` (string, optional) — Unique run identifier generated by BCTRL.
  - `runtimeId` (string, optional) — Unique runtime identifier generated by BCTRL.
  - `type` (string, optional)
- `nextCursor` (string, required, nullable)
- `folders` (list of object, optional)
  - `fileCount` (integer, required) — Non-negative whole-number count.
  - `lastCreatedAt` (datetime, required, nullable) — RFC 3339 timestamp with a UTC offset.
  - `name` (string, required) — Customer-facing resource name. 1–200 characters.
  - `path` (string, required)
  - `totalBytes` (integer, required) — Non-negative number of bytes.

## Examples

**Response**

```json
{
  "data": [
    {
      "contentType": "string",
      "createdAt": "2026-07-26T12:00:00Z",
      "downloadUrl": "string",
      "id": "file_AAAAAAAAAAAAAAAAAAAAAA",
      "name": "Production browser",
      "path": "string",
      "sizeBytes": 1024,
      "source": "upload",
      "spaceId": "sp_AAAAAAAAAAAAAAAAAAAAAA",
      "expiresAt": "2026-07-26T12:00:00Z",
      "metadata": {},
      "runId": "run_AAAAAAAAAAAAAAAAAAAAAA",
      "runtimeId": "rt_AAAAAAAAAAAAAAAAAAAAAA",
      "type": "string"
    }
  ],
  "nextCursor": "string",
  "folders": [
    {
      "fileCount": 0,
      "lastCreatedAt": "2026-07-26T12:00:00Z",
      "name": "Production browser",
      "path": "string",
      "totalBytes": 1024
    }
  ]
}
```

**SDK Code**

```python
import requests

url = "https://api.bctrl.ai/v1/files"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.bctrl.ai/v1/files';
const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

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"
	"net/http"
	"io"
)

func main() {

	url := "https://api.bctrl.ai/v1/files"

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

	req.Header.Add("Authorization", "Bearer <token>")

	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.bctrl.ai/v1/files")

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

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

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.get("https://api.bctrl.ai/v1/files")
  .header("Authorization", "Bearer <token>")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.bctrl.ai/v1/files', [
  'headers' => [
    'Authorization' => 'Bearer <token>',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://api.bctrl.ai/v1/files");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Bearer <token>");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Authorization": "Bearer <token>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.bctrl.ai/v1/files")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

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()
```