Change api for custom providers to support openai-responses

Author: ericdallo

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+- Change api for custom providers to support `openai-responses` instead of just `openai`, still supporting `openai` only.
+
 ## 0.27.0
 
 - Add support for auto read `AGENT.md` from workspace root and global eca dir, considering as context for chat prompts.

docs/models.md

@@ -109,7 +109,7 @@ Example:
 {
   "customProviders": {
     "my-company": {
-       "api": "openai",
+       "api": "openai-responses",
        "urlEnv": "MY_COMPANY_API_URL", // or "url"
        "keyEnv": "MY_COMPANY_API_KEY", // or "key"
        "models": ["gpt-5", "deepseek-r1"],
@@ -123,7 +123,7 @@ Example:
 
 | Option | Type | Description | Required |
 |--------|------|-------------|----------|
-| `api` | string | The API schema to use (`"openai"` or `"anthropic"`) | Yes |
+| `api` | string | The API schema to use (`"openai-responses"` or `"anthropic"`) | Yes |
 | `urlEnv` | string | Environment variable name containing the API URL | Yes* |
 | `url` | string | Direct API URL (use instead of `urlEnv`) | Yes* |
 | `keyEnv` | string | Environment variable name containing the API key | Yes* |
@@ -140,7 +140,7 @@ _* Either the `url` or `urlEnv` option is required, and either the `key` or `key
 {
   "customProviders": {
     "litellm": {
-       "api": "openai",
+       "api": "openai-responses",
        "url": "https://litellm.my-company.com",
        "key": "your-api-key",
        "models": ["gpt-5", "claude-3-sonnet-20240229", "llama-3-70b"],

src/eca/llm_api.clj

@@ -179,7 +179,8 @@
         (let [[provider model] (string/split model #"/" 2)
               provider-config (get custom-providers (keyword provider))
               provider-fn (case (:api provider-config)
-                            "openai" llm-providers.openai/completion!
+                            ("openai-responses"
+                             "openai") llm-providers.openai/completion!
                             "anthropic" llm-providers.anthropic/completion!
                             (on-error-wrapper {:message (format "Unknown custom model %s for provider %s" (:api provider-config) provider)}))
               url (or (:url provider-config) (config/get-env (:urlEnv provider-config)))