[FEATURE]: Include custom providers in /provider and /connect command

[stefaneidelloth]

Feature hasn't been suggested before.

• [x] I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

I defined a custom provider in my opencode.jsonc file (see below example).

If I start opencode and use the /provider command, I would expect my custom provider "fhgenie" to be shown in the list of providers. Howerver, it is not shown.

I would like to connect to my custom provider similar to github copilot provider, specifying some credentials in the command line.... that are stored as secret.

Currently I hard code my api key in opencode.jsonc. I am able to connect to the models using /models command.

=> Could you please support custom providers for the /provider and /connect command and clarify how to fully specify custom providers, including authentication?

Expected behavior: an improved config could support a syntax like

"Authorization": "Bearer ${secret.fhgenie}"

If the cutom secret does not yet exist, opencode asks for it and saves it as a secret.

{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "fhgenie": {
      "npm": "@ai-sdk/openai-compatible",
      "name": "FhGenie",
      "options": {
        "baseURL": "https://fhgenie.foo.de/v1",
        "headers": {
          "Authorization": "Bearer ***"
        }
      },
      "models": {
        "Kimi-K2-Thinking": {
          "name": "Kimi-K2-Thinking"
        },      
      }
    }
  }
}

[github-actions[bot]]

This issue might be a duplicate of existing issues. Please check:

• #3735: [FEATURE]: CLI Providers - Related request to support additional provider types in selection dialogs
• #1555: LM Studio Missing as Provider, custom provider for LM Studio non-functional - Similar issue with custom providers not appearing in provider selection
• #5210: Custom OpenAI-compatible provider returns no text content - Related issue with custom provider configuration and functionality
• #5163: Custom baseURL configuration returns "Route /api/messages not found" error - Related issue with custom provider baseURL configuration
• #1298: Getting an issue integrating a custom provider: AI_TypeValidationError - Similar custom provider integration issue
• #4533: opencode auth list shows "undefined" for $schema and provider fields despite valid configuration - Related to custom provider configuration display
• #1597: Improve provider and API key update workflow after initial setup - Related feature request for provider management workflow

Feel free to ignore if none of these address your specific case.

[rekram1-node]

Yeah we should fix

[edlsh]

Hi, I'd like to work on this issue. cc @rekram1-node

Scope for initial PR:

I'm proposing to handle the first part of this request - making custom providers visible in /provider and /connect commands with API key auth support.

Changes:

1. Modify the /provider endpoint to merge custom providers from config alongside models.dev providers
2. Add default API key auth method for custom providers in ProviderAuth.methods()

This would allow users to:

• See their custom providers in /connect
• Connect via API key (stored securely like other providers)

Out of scope (for now): The ${secret.xxx} template syntax for config interpolation is a larger feature that would benefit from separate design discussion - recommend a follow-up issue for that.

Estimated effort: ~20-30 lines across 2 files (server/server.ts, provider/auth.ts)

[rekram1-node]

I believe this is fixed in the next release

[Mte90]

It is not clear if to set a custom provider globally on the machine (and not for project) how to do it https://opencode.ai/docs/providers/#custom-provider

The guide mention opencode.json but is a project file and not a global one.

[rekram1-node]

https://opencode.ai/docs/config/#global

The config docs should help clear that up for you.

~/.config/opencode/opencode.json

[Mte90]

I checked that page but there is no field like for my custom key to specify the host parameter.

Also checking the custom-provider section I should expect some info about what are the parameters in the config and a redirect to the page.

[rekram1-node]

yeah docs need another pass