# origin_not_allowed

> The MCP endpoint does not accept requests from web pages.

**Browser origins refused** · HTTP 403

## What it means

The MCP endpoint does not accept requests from web pages.

## What to do

Call it from a server-side or desktop MCP client.

## Example

```json
{
  "type": "https://api.bymundi.com/problems/origin_not_allowed",
  "title": "Browser origins refused",
  "status": 403,
  "detail": "The MCP endpoint does not accept requests from web pages.",
  "code": "origin_not_allowed",
  "requestId": "req_…"
}
```

How to read any error: [Errors guide](https://api.bymundi.com/docs/guides/errors.md).