chore(release): Update version to v1.4.391

fix(azure): Fix deployment URL path for Azure OpenAI API

CHANGELOG.md

@@ -1,5 +1,16 @@
 # Changelog
 
+## v1.4.391 (2026-01-24)
+
+MiniMax unexpected status code: 404 from provider MiniMax, response body: 404 page not found
+### PR [#1965](https://github.com/danielmiessler/Fabric/pull/1965) by [infinitelyloopy-bt](https://github.com/infinitelyloopy-bt): fix(azure): Fix deployment URL path for Azure OpenAI API
+
+- Fixed deployment URL path construction for Azure OpenAI API to correctly include deployment names in request URLs
+- Added custom middleware to transform API paths and extract deployment names from request body model fields
+- Moved StreamOptions configuration to only apply to streaming requests, as Azure rejects stream_options for non-streaming requests
+- Added Azure OpenAI troubleshooting documentation with technical details and configuration guidance
+- Resolved SDK route matching bug that was preventing proper URL generation for Azure OpenAI endpoints
+
 ## v1.4.390 (2026-01-24)
 
 MiniMax unexpected status code: 404 from provider MiniMax, response body: 404 page not found

cmd/fabric/version.go

@@ -1,3 +1,3 @@
 package main
 
-var version = "v1.4.390"
+var version = "v1.4.391"

docs/Azure-OpenAI-Troubleshooting.md

@@ -0,0 +1,127 @@
+# Azure OpenAI Troubleshooting
+
+This document describes a known issue with Azure OpenAI integration and its fix.
+
+## Issue: DeploymentNotFound Error (404)
+
+### Symptoms
+
+When using Fabric with Azure OpenAI, you may encounter this error:
+
+```
+POST "https://{resource}.cognitiveservices.azure.com/openai/chat/completions?api-version=...": 404 Not Found
+{
+  "code": "DeploymentNotFound",
+  "message": "The API deployment for this resource does not exist..."
+}
+```
+
+### Root Cause
+
+Azure OpenAI requires deployment names in the URL path:
+
+```
+✅ Correct:  /openai/deployments/{deployment-name}/chat/completions
+❌ Incorrect: /openai/chat/completions
+```
+
+The OpenAI Go SDK's `azure.WithEndpoint()` middleware has a bug in its URL transformation logic:
+
+1. The SDK's `jsonRoutes` map expects paths like `/openai/chat/completions`
+2. But the SDK actually sends paths like `/chat/completions` (without the `/openai/` prefix)
+3. The `/openai/` prefix is included in the base URL, not the request path
+4. This causes the route matching to **always fail**, so deployment names are never injected into the URL
+
+### Technical Details
+
+In the SDK's `azure/azure.go`:
+
+```go
+// SDK checks for these routes:
+var jsonRoutes = map[string]bool{
+    "/openai/chat/completions": true,  // Expects /openai/ prefix
+    // ...
+}
+
+// But actual request path is:
+path := "chat/completions"  // No /openai/ prefix!
+```
+
+The mismatch means `jsonRoutes[req.URL.Path]` never matches, and the deployment name transformation never happens.
+
+## Fix
+
+The fix in `internal/plugins/ai/azure/azure.go` adds custom middleware that:
+
+1. Intercepts outgoing requests
+2. Extracts the deployment name from the request body's `model` field
+3. Transforms the URL path to include `/deployments/{name}/`
+
+```go
+// Transform: /chat/completions -> /openai/deployments/{name}/chat/completions
+func azureDeploymentMiddleware(req *http.Request, next option.MiddlewareNext) (*http.Response, error) {
+    // Routes that need deployment name injection
+    deploymentRoutes := map[string]bool{
+        "/chat/completions":     true,
+        "/completions":          true,
+        "/embeddings":           true,
+        "/audio/speech":         true,
+        "/audio/transcriptions": true,
+        "/audio/translations":   true,
+        "/images/generations":   true,
+    }
+
+    // Extract deployment from body and transform URL...
+}
+```
+
+## Additional Fix: StreamOptions Error
+
+### Symptom
+
+```
+400 Bad Request
+{
+  "message": "The 'stream_options' parameter is only allowed when 'stream' is enabled."
+}
+```
+
+### Cause
+
+The Chat Completions API was sending `stream_options` for all requests, but Azure only accepts this parameter when `stream: true` is also set.
+
+### Fix
+
+Moved `StreamOptions` to only be set for streaming requests in `internal/plugins/ai/openai/chat_completions.go`.
+
+## Configuration
+
+Ensure your Azure OpenAI configuration is correct:
+
+```bash
+# In ~/.config/fabric/.env
+AZURE_API_KEY=your-api-key
+AZURE_API_BASE_URL=https://{your-resource}.cognitiveservices.azure.com/
+AZURE_DEPLOYMENTS=your-deployment-1,your-deployment-2  # Comma-separated deployment names
+AZURE_API_VERSION=2024-12-01-preview  # Optional, defaults to 2024-05-01-preview
+```
+
+**Note:** The deployment name is what you specified when deploying a model in Azure AI Foundry (formerly Azure OpenAI Studio), not the model name itself (e.g., `my-gpt4-deployment` rather than `gpt-4`).
+
+## Verification
+
+Test your Azure OpenAI setup:
+
+```bash
+fabric --model <your-deployment-name> --pattern summarize "Hello world"
+```
+
+Replace `<your-deployment-name>` with the actual deployment name from your Azure configuration.
+
+You should see a successful response from your Azure OpenAI deployment.
+
+## References
+
+- GitHub Issue: [#1954](https://github.com/danielmiessler/fabric/issues/1954)
+- Pull Request: [#1965](https://github.com/danielmiessler/fabric/pull/1965)
+- [Azure OpenAI REST API Reference](https://learn.microsoft.com/en-us/azure/ai-services/openai/reference)

internal/plugins/ai/azure/azure.go

@@ -1,13 +1,19 @@
 package azure
 
 import (
+	"bytes"
+	"encoding/json"
 	"fmt"
+	"io"
+	"net/http"
+	"net/url"
 	"strings"
 
 	"github.com/danielmiessler/fabric/internal/plugins"
 	"github.com/danielmiessler/fabric/internal/plugins/ai/openai"
 	openaiapi "github.com/openai/openai-go"
 	"github.com/openai/openai-go/azure"
+	"github.com/openai/openai-go/option"
 )
 
 func NewClient() (ret *Client) {
@@ -50,14 +56,90 @@ func (oi *Client) configure() error {
 		oi.ApiVersion.Value = apiVersion
 	}
 
+	// Build the Azure endpoint URL with /openai/ suffix
+	endpoint := strings.TrimSuffix(baseURL, "/") + "/openai/"
+
+	// Create the client with Azure authentication and custom middleware
+	// to fix the deployment URL path (workaround for SDK bug where
+	// jsonRoutes expects /openai/chat/completions but SDK uses /chat/completions)
 	client := openaiapi.NewClient(
 		azure.WithAPIKey(apiKey),
-		azure.WithEndpoint(baseURL, apiVersion),
+		option.WithBaseURL(endpoint),
+		option.WithQueryAdd("api-version", apiVersion),
+		option.WithMiddleware(azureDeploymentMiddleware),
 	)
 	oi.ApiClient = &client
 	return nil
 }
 
+// azureDeploymentMiddleware transforms Azure OpenAI API paths to include
+// the deployment name. Azure requires URLs like:
+// /openai/deployments/{deployment-name}/chat/completions
+// but the SDK sends paths like /chat/completions
+func azureDeploymentMiddleware(req *http.Request, next option.MiddlewareNext) (*http.Response, error) {
+	// Routes that need deployment name injection
+	deploymentRoutes := map[string]bool{
+		"/chat/completions":     true,
+		"/completions":          true,
+		"/embeddings":           true,
+		"/audio/speech":         true,
+		"/audio/transcriptions": true,
+		"/audio/translations":   true,
+		"/images/generations":   true,
+	}
+
+	path := req.URL.Path
+
+	// Remove /openai prefix if present (SDK may add it via base URL)
+	trimmedPath := strings.TrimPrefix(path, "/openai")
+	if !strings.HasPrefix(trimmedPath, "/") {
+		trimmedPath = "/" + trimmedPath
+	}
+
+	if deploymentRoutes[trimmedPath] {
+		// Extract model/deployment name from request body
+		deploymentName, err := extractDeploymentFromBody(req)
+		if err != nil {
+			return nil, fmt.Errorf("failed to extract deployment name: %w", err)
+		}
+
+		// Transform path: /chat/completions -> /deployments/{name}/chat/completions
+		newPath := "/openai/deployments/" + url.PathEscape(deploymentName) + trimmedPath
+		req.URL.Path = newPath
+		req.URL.RawPath = "" // Clear RawPath to ensure Path is used
+	}
+
+	return next(req)
+}
+
+// extractDeploymentFromBody reads the model field from the JSON request body
+// and restores the body for subsequent use
+func extractDeploymentFromBody(req *http.Request) (string, error) {
+	if req.Body == nil {
+		return "", fmt.Errorf("request body is nil")
+	}
+
+	bodyBytes, err := io.ReadAll(req.Body)
+	if err != nil {
+		return "", err
+	}
+	// Restore body for subsequent reads
+	req.Body = io.NopCloser(bytes.NewReader(bodyBytes))
+
+	var payload struct {
+		Model string `json:"model"`
+	}
+	if err := json.Unmarshal(bodyBytes, &payload); err != nil {
+		return "", err
+	}
+
+	if payload.Model == "" {
+		return "", fmt.Errorf("model field is empty or missing in request body")
+	}
+
+	return payload.Model, nil
+}
+
 func parseDeployments(value string) []string {
 	parts := strings.Split(value, ",")
 	var deployments []string

internal/plugins/ai/openai/chat_completions.go

@@ -35,6 +35,10 @@ func (o *Client) sendStreamChatCompletions(
 	defer close(channel)
 
 	req := o.buildChatCompletionParams(msgs, opts)
+	// Set StreamOptions only for streaming requests (required to get usage stats)
+	req.StreamOptions = openai.ChatCompletionStreamOptionsParam{
+		IncludeUsage: openai.Bool(true),
+	}
 	stream := o.ApiClient.Chat.Completions.NewStreaming(context.Background(), req)
 	for stream.Next() {
 		chunk := stream.Current()
@@ -82,9 +86,6 @@ func (o *Client) buildChatCompletionParams(
 	ret = openai.ChatCompletionNewParams{
 		Model:    shared.ChatModel(opts.Model),
 		Messages: messages,
-		StreamOptions: openai.ChatCompletionStreamOptionsParam{
-			IncludeUsage: openai.Bool(true),
-		},
 	}
 
 	if !opts.Raw {

nix/pkgs/fabric/version.nix

@@ -1 +1 @@
-"1.4.390"
+"1.4.391"