fix(provider): support dsml tool call markup

README.md

@@ -108,6 +108,8 @@ clawgo provider login codex --manual
 - 额度或限流失败时自动切到 OAuth 账号池
 - 仍保留多账号轮换和后台刷新
 
+如果某个 OpenAI 兼容服务商只支持 `POST /v1/chat/completions`，可以在对应 provider 配置里设置 `responses.api: "chat_completions"`；默认值是 `responses`。
+
 ### 4. 启动
 
 交互模式：

README_EN.md

@@ -119,6 +119,8 @@ If you have both an `API key` and OAuth accounts for the same upstream, prefer c
 - the provider runtime panel shows current candidate ordering, the most recent successful credential, and recent hit/error history
 - to persist runtime history across restarts, configure `runtime_persist`, `runtime_history_file`, and `runtime_history_max` on the provider
 
+If an OpenAI-compatible provider only supports `POST /v1/chat/completions`, set `responses.api: "chat_completions"` on that provider. The default remains `responses`.
+
 ### 4. Start
 
 Interactive mode:

config.example.json

@@ -180,6 +180,7 @@
         "max_tokens": 8192,
         "temperature": 0.7,
         "responses": {
+          "api": "responses",
           "web_search_enabled": false,
           "web_search_context_size": "",
           "file_search_vector_store_ids": [],
@@ -208,6 +209,7 @@
         "max_tokens": 8192,
         "temperature": 0.7,
         "responses": {
+          "api": "responses",
           "web_search_enabled": false,
           "web_search_context_size": "",
           "file_search_vector_store_ids": [],
@@ -237,6 +239,7 @@
         "max_tokens": 8192,
         "temperature": 0.7,
         "responses": {
+          "api": "responses",
           "web_search_enabled": false,
           "web_search_context_size": "",
           "file_search_vector_store_ids": [],
@@ -253,6 +256,7 @@
         "max_tokens": 8192,
         "temperature": 0.7,
         "responses": {
+          "api": "responses",
           "web_search_enabled": false,
           "web_search_context_size": "",
           "file_search_vector_store_ids": [],
@@ -280,6 +284,7 @@
         "max_tokens": 8192,
         "temperature": 0.7,
         "responses": {
+          "api": "responses",
           "web_search_enabled": false,
           "web_search_context_size": "",
           "file_search_vector_store_ids": [],
@@ -306,6 +311,7 @@
         "max_tokens": 8192,
         "temperature": 0.7,
         "responses": {
+          "api": "responses",
           "web_search_enabled": false,
           "web_search_context_size": "",
           "file_search_vector_store_ids": [],

pkg/agent/loop.go

@@ -944,8 +944,9 @@ func estimateResponseUsage(ctx context.Context, provider providers.LLMProvider,
 
 func buildAssistantToolCallMessage(response *providers.LLMResponse) providers.Message {
 	assistantMsg := providers.Message{
-		Role:    "assistant",
-		Content: response.Content,
+		Role:             "assistant",
+		Content:          response.Content,
+		ReasoningContent: response.ReasoningContent,
 	}
 	if response == nil {
 		return assistantMsg

pkg/config/config.go

@@ -260,6 +260,7 @@ type ProviderOAuthConfig struct {
 }
 
 type ProviderResponsesConfig struct {
+	API                      string   `json:"api,omitempty"`
 	WebSearchEnabled         bool     `json:"web_search_enabled"`
 	WebSearchContextSize     string   `json:"web_search_context_size"`
 	FileSearchVectorStoreIDs []string `json:"file_search_vector_store_ids"`

pkg/config/normalized_test.go

@@ -11,6 +11,9 @@ func TestNormalizedViewProjectsCoreAndRuntime(t *testing.T) {
 		MaxTokens:   12288,
 		Temperature: 0.35,
 		TimeoutSec:  90,
+		Responses: ProviderResponsesConfig{
+			API: "chat_completions",
+		},
 	}
 	cfg.Agents.Subagents["coder"] = SubagentConfig{
 		Enabled:          true,
@@ -40,4 +43,7 @@ func TestNormalizedViewProjectsCoreAndRuntime(t *testing.T) {
 	if got := view.Runtime.Providers["openai"].Temperature; got != 0.35 {
 		t.Fatalf("expected provider temperature in normalized runtime view, got %v", got)
 	}
+	if got := view.Runtime.Providers["openai"].Responses.API; got != "chat_completions" {
+		t.Fatalf("expected provider responses.api in normalized runtime view, got %q", got)
+	}
 }

pkg/config/validate.go

@@ -515,6 +515,13 @@ func validateProviderConfig(path string, p ProviderConfig) []error {
 	if p.OAuth.CooldownSec < 0 {
 		errs = append(errs, fmt.Errorf("%s.oauth.cooldown_sec must be >= 0", path))
 	}
+	if p.Responses.API != "" {
+		switch strings.TrimSpace(p.Responses.API) {
+		case "responses", "chat_completions":
+		default:
+			errs = append(errs, fmt.Errorf("%s.responses.api must be one of: responses, chat_completions", path))
+		}
+	}
 	if p.Responses.WebSearchContextSize != "" {
 		switch p.Responses.WebSearchContextSize {
 		case "low", "medium", "high":

pkg/config/validate_test.go

@@ -247,3 +247,27 @@ func TestValidateProviderHybridRequiresOAuthProvider(t *testing.T) {
 		t.Fatalf("expected oauth.provider validation error, got %v", errs)
 	}
 }
+
+func TestValidateProviderResponsesAPIRejectsUnknownValue(t *testing.T) {
+	t.Parallel()
+
+	cfg := DefaultConfig()
+	pc := cfg.Models.Providers["openai"]
+	pc.Responses.API = "legacy"
+	cfg.Models.Providers["openai"] = pc
+
+	errs := Validate(cfg)
+	if len(errs) == 0 {
+		t.Fatalf("expected validation errors")
+	}
+	found := false
+	for _, err := range errs {
+		if strings.Contains(err.Error(), "models.providers.openai.responses.api") {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Fatalf("expected responses.api validation error, got %v", errs)
+	}
+}

pkg/providers/http_provider.go

@@ -31,6 +31,7 @@ type HTTPProvider struct {
 	apiBase                  string
 	defaultModel             string
 	supportsResponsesCompact bool
+	responsesAPI             string
 	authMode                 string
 	timeout                  time.Duration
 	httpClient               *http.Client
@@ -48,6 +49,7 @@ func NewHTTPProvider(providerName, apiKey, apiBase, defaultModel string, support
 		apiBase:                  normalizedBase,
 		defaultModel:             strings.TrimSpace(defaultModel),
 		supportsResponsesCompact: supportsResponsesCompact,
+		responsesAPI:             "responses",
 		authMode:                 authMode,
 		timeout:                  timeout,
 		httpClient:               &http.Client{Timeout: timeout},
@@ -79,7 +81,7 @@ func (p *HTTPProvider) Chat(ctx context.Context, messages []Message, tools []Too
 	if !json.Valid(body) {
 		return nil, fmt.Errorf("API error (status %d, content-type %q): non-JSON response: %s", statusCode, contentType, previewResponseBody(body))
 	}
-	if p.useOpenAICompatChatUpstream() {
+	if p.useOpenAICompatChatUpstream() || p.useConfiguredOpenAICompatChat() {
 		return parseOpenAICompatResponse(body)
 	}
 	return parseResponsesAPIResponse(body)
@@ -102,7 +104,7 @@ func (p *HTTPProvider) ChatStream(ctx context.Context, messages []Message, tools
 	if !json.Valid(body) {
 		return nil, fmt.Errorf("API error (status %d, content-type %q): non-JSON response: %s", status, ctype, previewResponseBody(body))
 	}
-	if p.useOpenAICompatChatUpstream() {
+	if p.useOpenAICompatChatUpstream() || p.useConfiguredOpenAICompatChat() {
 		return parseOpenAICompatResponse(body)
 	}
 	return parseResponsesAPIResponse(body)

pkg/providers/openai_compat_adapter.go

@@ -11,8 +11,9 @@ func parseOpenAICompatResponse(body []byte) (*LLMResponse, error) {
 	var payload struct {
 		Choices []struct {
 			Message struct {
-				Content   string `json:"content"`
-				ToolCalls []struct {
+				Content          string `json:"content"`
+				ReasoningContent string `json:"reasoning_content"`
+				ToolCalls        []struct {
 					ID       string `json:"id"`
 					Type     string `json:"type"`
 					Function struct {
@@ -37,8 +38,9 @@ func parseOpenAICompatResponse(body []byte) (*LLMResponse, error) {
 	}
 	choice := payload.Choices[0]
 	resp := &LLMResponse{
-		Content:      choice.Message.Content,
-		FinishReason: choice.FinishReason,
+		Content:          choice.Message.Content,
+		ReasoningContent: choice.Message.ReasoningContent,
+		FinishReason:     choice.FinishReason,
 	}
 	if payload.Usage.TotalTokens > 0 || payload.Usage.PromptTokens > 0 || payload.Usage.CompletionTokens > 0 {
 		resp.Usage = &UsageInfo{
@@ -112,6 +114,18 @@ func (p *HTTPProvider) useOpenAICompatChatUpstream() bool {
 	}
 }
 
+func (p *HTTPProvider) useConfiguredOpenAICompatChat() bool {
+	if p == nil {
+		return false
+	}
+	switch strings.ToLower(strings.TrimSpace(p.responsesAPI)) {
+	case "chat_completions":
+		return true
+	default:
+		return false
+	}
+}
+
 func (p *HTTPProvider) compatBase() string {
 	switch p.oauthProvider() {
 	case defaultQwenOAuthProvider:
@@ -158,6 +172,7 @@ func (p *HTTPProvider) buildOpenAICompatChatRequest(messages []Message, tools []
 	if temperature, ok := float64FromOption(options, "temperature"); ok {
 		requestBody["temperature"] = temperature
 	}
+	normalizeOpenAICompatThinkingMessages(requestBody)
 	return requestBody
 }
 
@@ -173,6 +188,9 @@ func openAICompatMessages(messages []Message) []map[string]interface{} {
 			out = append(out, map[string]interface{}{"role": "user", "content": content})
 		case "assistant":
 			item := map[string]interface{}{"role": "assistant", "content": content}
+			if reasoning := strings.TrimSpace(msg.ReasoningContent); reasoning != "" {
+				item["reasoning_content"] = reasoning
+			}
 			if len(msg.ToolCalls) > 0 {
 				toolCalls := make([]map[string]interface{}, 0, len(msg.ToolCalls))
 				for _, tc := range msg.ToolCalls {
@@ -213,6 +231,96 @@ func openAICompatMessages(messages []Message) []map[string]interface{} {
 	return out
 }
 
+func normalizeOpenAICompatThinkingMessages(body map[string]interface{}) {
+	var items []map[string]interface{}
+	switch raw := body["messages"].(type) {
+	case []map[string]interface{}:
+		items = raw
+	case []interface{}:
+		items = make([]map[string]interface{}, 0, len(raw))
+		for _, item := range raw {
+			msg, _ := item.(map[string]interface{})
+			if msg != nil {
+				items = append(items, msg)
+			}
+		}
+	}
+	if len(items) == 0 {
+		return
+	}
+	latestReasoning := ""
+	hasLatestReasoning := false
+	for i := range items {
+		msg := items[i]
+		if !strings.EqualFold(strings.TrimSpace(fmt.Sprintf("%v", msg["role"])), "assistant") {
+			continue
+		}
+		if raw, ok := msg["reasoning_content"]; ok {
+			if reasoning := strings.TrimSpace(fmt.Sprintf("%v", raw)); reasoning != "" && reasoning != "<nil>" {
+				latestReasoning = reasoning
+				hasLatestReasoning = true
+			}
+		}
+		if !assistantMessageHasToolCalls(msg) {
+			continue
+		}
+		existingReasoning := strings.TrimSpace(fmt.Sprintf("%v", msg["reasoning_content"]))
+		if existingReasoning == "" || existingReasoning == "<nil>" {
+			msg["reasoning_content"] = fallbackAssistantReasoningContent(msg, hasLatestReasoning, latestReasoning)
+			if reasoning := strings.TrimSpace(fmt.Sprintf("%v", msg["reasoning_content"])); reasoning != "" && reasoning != "<nil>" {
+				latestReasoning = reasoning
+				hasLatestReasoning = true
+			}
+		}
+	}
+}
+
+func assistantMessageHasToolCalls(msg map[string]interface{}) bool {
+	switch raw := msg["tool_calls"].(type) {
+	case []interface{}:
+		return len(raw) > 0
+	case []map[string]interface{}:
+		return len(raw) > 0
+	default:
+		return false
+	}
+}
+
+func fallbackAssistantReasoningContent(msg map[string]interface{}, hasLatest bool, latest string) string {
+	if hasLatest && strings.TrimSpace(latest) != "" {
+		return latest
+	}
+	if text := strings.TrimSpace(fmt.Sprintf("%v", msg["content"])); text != "" && text != "<nil>" {
+		return text
+	}
+	switch content := msg["content"].(type) {
+	case []map[string]interface{}:
+		return joinAssistantTextParts(content)
+	case []interface{}:
+		parts := make([]map[string]interface{}, 0, len(content))
+		for _, raw := range content {
+			part, _ := raw.(map[string]interface{})
+			if part != nil {
+				parts = append(parts, part)
+			}
+		}
+		return joinAssistantTextParts(parts)
+	default:
+		return ""
+	}
+}
+
+func joinAssistantTextParts(parts []map[string]interface{}) string {
+	texts := make([]string, 0, len(parts))
+	for _, part := range parts {
+		text := strings.TrimSpace(fmt.Sprintf("%v", part["text"]))
+		if text != "" && text != "<nil>" {
+			texts = append(texts, text)
+		}
+	}
+	return strings.Join(texts, "\n")
+}
+
 func openAICompatMessageContent(msg Message) interface{} {
 	if len(msg.ContentParts) == 0 {
 		return msg.Content
@@ -307,17 +415,25 @@ func codexCompatRequestBody(requestBody map[string]interface{}) map[string]inter
 }
 
 func parseCompatFunctionCalls(content string) ([]ToolCall, string) {
-	if strings.TrimSpace(content) == "" || !strings.Contains(content, "<function_call>") {
+	if strings.TrimSpace(content) == "" || !containsCompatFunctionCallMarkup(content) {
 		return nil, content
 	}
-	blockRe := regexp.MustCompile(`(?is)<function_call>\s*(.*?)\s*</function_call>`)
-	blocks := blockRe.FindAllStringSubmatch(content, -1)
+	blockRe := regexp.MustCompile(`(?is)<function_call>\s*(.*?)\s*</function_call>|<｜｜DSML｜｜tool_calls>\s*(.*?)\s*</｜｜DSML｜｜tool_calls>`)
+	matches := blockRe.FindAllStringSubmatch(content, -1)
+	blocks := make([]string, 0, len(matches))
+	for _, match := range matches {
+		switch {
+		case len(match) > 1 && strings.TrimSpace(match[1]) != "":
+			blocks = append(blocks, match[1])
+		case len(match) > 2 && strings.TrimSpace(match[2]) != "":
+			blocks = append(blocks, match[2])
+		}
+	}
 	if len(blocks) == 0 {
 		return nil, content
 	}
 	toolCalls := make([]ToolCall, 0, len(blocks))
-	for i, block := range blocks {
-		raw := block[1]
+	for i, raw := range blocks {
 		invoke := extractTag(raw, "invoke")
 		if invoke != "" {
 			raw = invoke
@@ -326,6 +442,9 @@ func parseCompatFunctionCalls(content string) ([]ToolCall, string) {
 		if strings.TrimSpace(name) == "" {
 			name = extractTag(raw, "tool_name")
 		}
+		if strings.TrimSpace(name) == "" {
+			name = extractInvokeNameAttr(raw)
+		}
 		name = strings.TrimSpace(name)
 		if name == "" {
 			continue
@@ -358,6 +477,14 @@ func parseCompatFunctionCalls(content string) ([]ToolCall, string) {
 	return toolCalls, cleaned
 }
 
+func containsCompatFunctionCallMarkup(content string) bool {
+	trimmed := strings.TrimSpace(content)
+	if trimmed == "" {
+		return false
+	}
+	return strings.Contains(trimmed, "<function_call>") || strings.Contains(trimmed, "<｜｜DSML｜｜tool_calls>")
+}
+
 func extractTag(src string, tag string) string {
 	re := regexp.MustCompile(fmt.Sprintf(`(?is)<%s>\s*(.*?)\s*</%s>`, regexp.QuoteMeta(tag), regexp.QuoteMeta(tag)))
 	m := re.FindStringSubmatch(src)
@@ -366,3 +493,12 @@ func extractTag(src string, tag string) string {
 	}
 	return strings.TrimSpace(m[1])
 }
+
+func extractInvokeNameAttr(src string) string {
+	re := regexp.MustCompile(`(?is)<(?:invoke|｜｜DSML｜｜invoke)\b[^>]*\bname\s*=\s*"([^"]+)"[^>]*>`)
+	m := re.FindStringSubmatch(src)
+	if len(m) < 2 {
+		return ""
+	}
+	return strings.TrimSpace(m[1])
+}

pkg/providers/openai_compat_provider_test.go

@@ -1,6 +1,7 @@
 package providers
 
 import (
+	"encoding/json"
 	"net/http"
 	"net/http/httptest"
 	"strings"
@@ -180,3 +181,147 @@ func TestBuildOpenAICompatChatRequestStripsKimiPrefixAndSuffix(t *testing.T) {
 		t.Fatalf("reasoning_effort = %#v, want auto", got)
 	}
 }
+
+func TestHTTPProviderChatUsesConfiguredChatCompletionsAPI(t *testing.T) {
+	var gotPath string
+	var gotBody map[string]interface{}
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		gotPath = r.URL.Path
+		if err := json.NewDecoder(r.Body).Decode(&gotBody); err != nil {
+			t.Fatalf("decode request: %v", err)
+		}
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte(`{"choices":[{"message":{"content":"hello from chat"},"finish_reason":"stop"}],"usage":{"prompt_tokens":1,"completion_tokens":2,"total_tokens":3}}`))
+	}))
+	defer server.Close()
+
+	provider := NewHTTPProvider("openai", "token", server.URL+"/v1", "gpt-5", false, "api_key", 5*time.Second, nil)
+	provider.responsesAPI = "chat_completions"
+
+	resp, err := provider.Chat(t.Context(), []Message{{Role: "user", Content: "hi"}}, nil, "gpt-5", nil)
+	if err != nil {
+		t.Fatalf("Chat error: %v", err)
+	}
+	if gotPath != "/v1/chat/completions" {
+		t.Fatalf("path = %q, want /v1/chat/completions", gotPath)
+	}
+	if gotBody["model"] != "gpt-5" {
+		t.Fatalf("model = %#v, want gpt-5", gotBody["model"])
+	}
+	if resp.Content != "hello from chat" {
+		t.Fatalf("content = %q, want hello from chat", resp.Content)
+	}
+	if resp.Usage == nil || resp.Usage.TotalTokens != 3 {
+		t.Fatalf("usage = %#v, want total_tokens=3", resp.Usage)
+	}
+}
+
+func TestParseOpenAICompatResponseCapturesReasoningContent(t *testing.T) {
+	resp, err := parseOpenAICompatResponse([]byte(`{"choices":[{"message":{"content":"answer","reasoning_content":"hidden chain"},"finish_reason":"stop"}]}`))
+	if err != nil {
+		t.Fatalf("parseOpenAICompatResponse error: %v", err)
+	}
+	if resp.ReasoningContent != "hidden chain" {
+		t.Fatalf("ReasoningContent = %q, want hidden chain", resp.ReasoningContent)
+	}
+}
+
+func TestOpenAICompatMessagesIncludeReasoningContent(t *testing.T) {
+	msgs := openAICompatMessages([]Message{{
+		Role:             "assistant",
+		Content:          "tool plan",
+		ReasoningContent: "thinking trace",
+		ToolCalls: []ToolCall{{
+			ID:   "call_1",
+			Name: "read_file",
+			Function: &FunctionCall{
+				Name:      "read_file",
+				Arguments: `{"path":"a.txt"}`,
+			},
+		}},
+	}})
+	if len(msgs) != 1 {
+		t.Fatalf("messages len = %d", len(msgs))
+	}
+	if got := msgs[0]["reasoning_content"]; got != "thinking trace" {
+		t.Fatalf("reasoning_content = %#v, want thinking trace", got)
+	}
+}
+
+func TestNormalizeOpenAICompatThinkingMessagesBackfillsReasoningForToolCalls(t *testing.T) {
+	body := map[string]interface{}{
+		"messages": []map[string]interface{}{
+			{
+				"role": "assistant",
+				"tool_calls": []map[string]interface{}{
+					{"id": "call_1"},
+				},
+				"content": "thinking content",
+			},
+		},
+	}
+
+	normalizeOpenAICompatThinkingMessages(body)
+
+	msgs := body["messages"].([]map[string]interface{})
+	if got := msgs[0]["reasoning_content"]; got != "thinking content" {
+		t.Fatalf("reasoning_content = %#v, want thinking content", got)
+	}
+}
+
+func TestHTTPProviderChatConfiguredCompatBackfillsReasoningContentForToolHistory(t *testing.T) {
+	var gotBody map[string]interface{}
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if err := json.NewDecoder(r.Body).Decode(&gotBody); err != nil {
+			t.Fatalf("decode request: %v", err)
+		}
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte(`{"choices":[{"message":{"content":"ok"},"finish_reason":"stop"}]}`))
+	}))
+	defer server.Close()
+
+	provider := NewHTTPProvider("openai", "token", server.URL+"/v1", "gpt-5", false, "api_key", 5*time.Second, nil)
+	provider.responsesAPI = "chat_completions"
+
+	_, err := provider.Chat(t.Context(), []Message{
+		{Role: "user", Content: "hello"},
+		{
+			Role:    "assistant",
+			Content: "thinking content",
+			ToolCalls: []ToolCall{{
+				ID:   "call_1",
+				Name: "read_file",
+				Function: &FunctionCall{
+					Name:      "read_file",
+					Arguments: `{"path":"a.txt"}`,
+				},
+			}},
+		},
+		{Role: "tool", ToolCallID: "call_1", Content: "file body"},
+	}, nil, "gpt-5(high)", nil)
+	if err != nil {
+		t.Fatalf("Chat error: %v", err)
+	}
+
+	rawMsgs, _ := gotBody["messages"].([]interface{})
+	if len(rawMsgs) < 2 {
+		t.Fatalf("messages = %#v", gotBody["messages"])
+	}
+	assistant, _ := rawMsgs[1].(map[string]interface{})
+	if got := assistant["reasoning_content"]; got != "thinking content" {
+		t.Fatalf("reasoning_content = %#v, want thinking content", got)
+	}
+}
+
+func TestParseCompatFunctionCallsSupportsDSMLToolCalls(t *testing.T) {
+	calls, cleaned := parseCompatFunctionCalls(`<｜｜DSML｜｜tool_calls><｜｜DSML｜｜invoke name="read_file"></｜｜DSML｜｜invoke></｜｜DSML｜｜tool_calls>`)
+	if len(calls) != 1 {
+		t.Fatalf("calls = %#v, want one tool call", calls)
+	}
+	if calls[0].Name != "read_file" {
+		t.Fatalf("tool name = %q, want read_file", calls[0].Name)
+	}
+	if strings.TrimSpace(cleaned) != "" {
+		t.Fatalf("cleaned = %q, want empty", cleaned)
+	}
+}

pkg/providers/provider_registry.go

@@ -116,7 +116,11 @@ func CreateProviderByName(cfg *config.Config, name string) (LLMProvider, error)
 	if oauthProvider == defaultIFlowOAuthProvider || strings.EqualFold(routeName, defaultIFlowOAuthProvider) {
 		return NewIFlowProvider(routeName, pc.APIKey, pc.APIBase, defaultModel, pc.SupportsResponsesCompact, pc.Auth, time.Duration(pc.TimeoutSec)*time.Second, oauth), nil
 	}
-	return NewHTTPProvider(routeName, pc.APIKey, pc.APIBase, defaultModel, pc.SupportsResponsesCompact, pc.Auth, time.Duration(pc.TimeoutSec)*time.Second, oauth), nil
+	provider := NewHTTPProvider(routeName, pc.APIKey, pc.APIBase, defaultModel, pc.SupportsResponsesCompact, pc.Auth, time.Duration(pc.TimeoutSec)*time.Second, oauth)
+	if api := strings.TrimSpace(pc.Responses.API); api != "" {
+		provider.responsesAPI = api
+	}
+	return provider, nil
 }
 
 func ProviderSupportsResponsesCompact(cfg *config.Config, name string) bool {

pkg/providers/responses_adapter.go

@@ -44,7 +44,7 @@ func (p *HTTPProvider) callResponses(ctx context.Context, messages []Message, to
 	if prevID, ok := stringOption(options, "responses_previous_response_id"); ok && prevID != "" {
 		requestBody["previous_response_id"] = prevID
 	}
-	if p.useOpenAICompatChatUpstream() {
+	if p.useOpenAICompatChatUpstream() || p.useConfiguredOpenAICompatChat() {
 		chatBody := p.buildOpenAICompatChatRequest(messages, tools, model, options)
 		return p.postJSON(ctx, endpointFor(p.compatBase(), "/chat/completions"), chatBody)
 	}
@@ -309,7 +309,7 @@ func (p *HTTPProvider) callResponsesStream(ctx context.Context, messages []Messa
 	if streamOpts, ok := mapOption(options, "responses_stream_options"); ok && len(streamOpts) > 0 {
 		requestBody["stream_options"] = streamOpts
 	}
-	if p.useOpenAICompatChatUpstream() {
+	if p.useOpenAICompatChatUpstream() || p.useConfiguredOpenAICompatChat() {
 		chatBody := p.buildOpenAICompatChatRequest(messages, tools, model, options)
 		chatBody["stream"] = true
 		streamOptions := map[string]interface{}{"include_usage": true}

pkg/providers/types.go

@@ -16,10 +16,11 @@ type FunctionCall struct {
 }
 
 type LLMResponse struct {
-	Content      string     `json:"content"`
-	ToolCalls    []ToolCall `json:"tool_calls,omitempty"`
-	FinishReason string     `json:"finish_reason"`
-	Usage        *UsageInfo `json:"usage,omitempty"`
+	Content          string     `json:"content"`
+	ReasoningContent string     `json:"reasoning_content,omitempty"`
+	ToolCalls        []ToolCall `json:"tool_calls,omitempty"`
+	FinishReason     string     `json:"finish_reason"`
+	Usage            *UsageInfo `json:"usage,omitempty"`
 }
 
 type UsageInfo struct {
@@ -29,11 +30,12 @@ type UsageInfo struct {
 }
 
 type Message struct {
-	Role         string               `json:"role"`
-	Content      string               `json:"content"`
-	ContentParts []MessageContentPart `json:"content_parts,omitempty"`
-	ToolCalls    []ToolCall           `json:"tool_calls,omitempty"`
-	ToolCallID   string               `json:"tool_call_id,omitempty"`
+	Role             string               `json:"role"`
+	Content          string               `json:"content"`
+	ReasoningContent string               `json:"reasoning_content,omitempty"`
+	ContentParts     []MessageContentPart `json:"content_parts,omitempty"`
+	ToolCalls        []ToolCall           `json:"tool_calls,omitempty"`
+	ToolCallID       string               `json:"tool_call_id,omitempty"`
 }
 
 type MessageContentPart struct {

pkg/session/manager.go

@@ -64,9 +64,10 @@ type openClawEvent struct {
 			Type string `json:"type"`
 			Text string `json:"text,omitempty"`
 		} `json:"content,omitempty"`
-		ToolCallID string               `json:"toolCallId,omitempty"`
-		ToolName   string               `json:"toolName,omitempty"`
-		ToolCalls  []providers.ToolCall `json:"toolCalls,omitempty"`
+		ReasoningContent string               `json:"reasoning_content,omitempty"`
+		ToolCallID       string               `json:"toolCallId,omitempty"`
+		ToolName         string               `json:"toolName,omitempty"`
+		ToolCalls        []providers.ToolCall `json:"toolCalls,omitempty"`
 	} `json:"message,omitempty"`
 }
 
@@ -577,9 +578,10 @@ func toOpenClawMessageEvent(msg providers.Message) openClawEvent {
 				Type string `json:"type"`
 				Text string `json:"text,omitempty"`
 			} `json:"content,omitempty"`
-			ToolCallID string               `json:"toolCallId,omitempty"`
-			ToolName   string               `json:"toolName,omitempty"`
-			ToolCalls  []providers.ToolCall `json:"toolCalls,omitempty"`
+			ReasoningContent string               `json:"reasoning_content,omitempty"`
+			ToolCallID       string               `json:"toolCallId,omitempty"`
+			ToolName         string               `json:"toolName,omitempty"`
+			ToolCalls        []providers.ToolCall `json:"toolCalls,omitempty"`
 		}{
 			Role: mappedRole,
 			Content: []struct {
@@ -588,8 +590,9 @@ func toOpenClawMessageEvent(msg providers.Message) openClawEvent {
 			}{
 				{Type: "text", Text: msg.Content},
 			},
-			ToolCallID: msg.ToolCallID,
-			ToolCalls:  msg.ToolCalls,
+			ReasoningContent: msg.ReasoningContent,
+			ToolCallID:       msg.ToolCallID,
+			ToolCalls:        msg.ToolCalls,
 		},
 	}
 	return e
@@ -620,7 +623,7 @@ func fromJSONLLine(line []byte) (providers.Message, bool) {
 			content += part.Text
 		}
 	}
-	return providers.Message{Role: role, Content: content, ToolCallID: event.Message.ToolCallID, ToolCalls: event.Message.ToolCalls}, true
+	return providers.Message{Role: role, Content: content, ReasoningContent: event.Message.ReasoningContent, ToolCallID: event.Message.ToolCallID, ToolCalls: event.Message.ToolCalls}, true
 }
 
 func deriveSessionID(key string) string {