Problem/Motivation

Currently the Mistral provider (or rather the Partitech\PhpMistral lib) hardcodes the API endpoint (https://api.mistral.ai). There's no way to configure a custom endpoint, which is useful for:
- Using API proxies
- Self-hosted or enterprise Mistral deployments
- Automated testing with mock servers

Other providers like OpenAI support this via a host configuration option.

Proposed resolution

1. Add a host field to MistralConfigForm (in Advanced settings)
2. Save it to ai_provider_mistral.settings config
3. Update loadClient() to pass the custom URL to MistralClient constructor
4. Update config schema

The php-mistral library already supports this:
public function __construct(string $apiKey, string $url = self::ENDPOINT)

Remaining tasks

- Add host field to config form
- Update MistralProvider::loadClient()
- Update config schema

User interface changes

- Adds a new "Host" text field under "Advanced settings" on the Mistral configuration form (/admin/config/ai/providers/mistral)

API changes

- None - the provider's public methods remain unchanged

Data model changes

- Adds new host key to ai_provider_mistral.settings configuration
- Updates config schema to include the host property

Issue fork ai_provider_mistral-3570602

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Comments

petar_basic created an issue. See original summary.

petar_basic opened merge request !21

petar_basic’s picture

petar_basic commented
Status: Active » Needs work
petar_basic’s picture

petar_basic commented
Assigned: petar_basic » Unassigned
Status: Needs work » Needs review

- Added host setting to config schema with empty default (uses Mistral's default)
- Added "API Host" text field to the settings form with helper text
- Modified loadClient() to pass custom host to the Mistral client when configured

To test:
1. Go to /admin/config/ai/providers/mistral
2. Enter a custom host URL (e.g., https://invalid.test)
3. Save and run a chat request: 

$provider = \Drupal::service("ai.provider")->createInstance("mistral"); 
$input = new ChatInput([new ChatMessage("user", "Hello")]);
$provider->chat($input, "mistral-small-latest");

4. Verify the error message shows the custom host: Could not resolve host: invalid.test for "https://invalid.test/v1/chat/completions"
OR setup a valid host - e.g. a mock server or a proxy

5. Clear the host field and save - verify requests go to the default api.mistral.ai endpoint

fago’s picture

fago
Primary language German
Location Vienna
commented
Status: Needs review » Fixed

thanks, the feature is straight-forward and easy to add. changes are good and come with tests. also verified locally it works as it should. Merged!

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  • fago committed 451e8407 on 1.1.x authored by petar_basic 
    feat: #3570602 Add support for custom API endpoint configuration

By:...

Status: Fixed » Closed (fixed)

Automatically closed - issue fixed for 2 weeks with no activity.