diff --git a/app/src/config/tabs/ai/aiProviderUi.ts b/app/src/config/tabs/ai/aiProviderUi.ts
index 23e08e0b04e..faed82a219b 100644
--- a/app/src/config/tabs/ai/aiProviderUi.ts
+++ b/app/src/config/tabs/ai/aiProviderUi.ts
@@ -41,6 +41,7 @@ const PROVIDER_PRESETS: IProviderPreset[] = [
     {id: "zhipu", name: "Zhipu AI", baseURL: "https://open.bigmodel.cn/api/paas/v4", category: "official", icon: "/stage/images/ai-providers/zhipu.svg"},
     {id: "gemini", name: "Gemini", baseURL: "https://generativelanguage.googleapis.com/v1beta/openai", category: "official", icon: "/stage/images/ai-providers/gemini.svg"},
     {id: "mistral", name: "Mistral AI", baseURL: "https://api.mistral.ai/v1", category: "official", icon: "/stage/images/ai-providers/mistral.svg"},
+    {id: "aimlapi", name: "aimlapi.com", baseURL: "https://api.aimlapi.com/v1", category: "aggregator"},
     {id: "siliconflow", name: "SiliconFlow", baseURL: "https://api.siliconflow.cn/v1", category: "aggregator", icon: "/stage/images/ai-providers/siliconflow.svg"},
     {id: "openrouter", name: "OpenRouter", baseURL: "https://openrouter.ai/api/v1", category: "aggregator", icon: "/stage/images/ai-providers/openrouter.svg"},
     {id: "groq", name: "Groq", baseURL: "https://api.groq.com/openai/v1", category: "aggregator"},
diff --git a/kernel/util/openai.go b/kernel/util/openai.go
index 98052e39272..fd453ca4cb3 100644
--- a/kernel/util/openai.go
+++ b/kernel/util/openai.go
@@ -146,10 +146,68 @@ func ChatGPT(msg string, contextMsgs []string, c *openai.Client, protocol, model
 func NewOpenAIClient(apiKey, apiBaseURL string) *openai.Client {
 	config := openai.DefaultConfig(apiKey)
 	config.BaseURL = apiBaseURL
-	config.HTTPClient = httpclient.NewUserAgentClient(nil)
+	config.HTTPClient = newProviderHTTPDoer()
 	return openai.NewClientWithConfig(config)
 }
 
+// newProviderHTTPDoer 返回访问 Provider 所用的 HTTP 客户端：在带 User-Agent 的基础客户端外
+// 再包一层调用方标识请求头注入，供 chat、模型清单等所有 Provider 请求复用。
+func newProviderHTTPDoer() openai.HTTPDoer {
+	return &attributionTransport{base: httpclient.NewUserAgentClient(nil)}
+}
+
+// providerAttributionHeaders 是「服务商 API 主机名 → 调用方标识请求头」的内置清单。
+// 这些请求头只声明「请求来自思源笔记」，不含 API Key、用户内容或任何可识别用户的信息，
+// 服务商据此统计接入来源。按主机名分表是为了把请求头限定在该服务商自有端点上，
+// 避免随请求发往其他服务商，或发往仅仅转发同一 API 的第三方代理。
+var providerAttributionHeaders = map[string]map[string]string{
+	// AI/ML API：HTTP-Referer 与 X-Title 指向思源笔记自身（OpenRouter 系惯例，标识调用方应用），
+	// X-AIMLAPI-Source 与 X-AIMLAPI-Partner-ID 是该服务商用于统计接入来源的自有请求头。
+	"api.aimlapi.com": {
+		"HTTP-Referer":         "https://github.com/siyuan-note/siyuan",
+		"X-Title":              "SiYuan",
+		"X-AIMLAPI-Source":     "agent/siyuan",
+		"X-AIMLAPI-Partner-ID": "part_7cceWAMI91xwz7G6FrcOEUwN",
+	},
+}
+
+// AttributionHeadersForHost 按主机名大小写不敏感查表，返回该服务商需注入的调用方标识请求头；
+// 无匹配返回 nil。返回的是副本，调用方改动不会影响内置清单。
+func AttributionHeadersForHost(host string) map[string]string {
+	headers := providerAttributionHeaders[strings.ToLower(strings.TrimSpace(host))]
+	if 0 == len(headers) {
+		return nil
+	}
+	return maps.Clone(headers)
+}
+
+// attributionTransport 包装一个 HTTPDoer，为发往内置清单中服务商域名的请求补上调用方标识请求头。
+// 只在请求实际的目标主机命中清单时注入；已存在的同名请求头一律保留，不覆盖上层已设置的值。
+type attributionTransport struct {
+	base openai.HTTPDoer
+}
+
+func (t *attributionTransport) Do(req *http.Request) (*http.Response, error) {
+	if nil == req || nil == req.URL {
+		return t.base.Do(req)
+	}
+
+	headers := AttributionHeadersForHost(req.URL.Hostname())
+	if 0 == len(headers) {
+		return t.base.Do(req)
+	}
+
+	if nil == req.Header {
+		req.Header = http.Header{}
+	}
+	for name, value := range headers {
+		if "" == req.Header.Get(name) {
+			req.Header.Set(name, value)
+		}
+	}
+	return t.base.Do(req)
+}
+
 // builtinExtraBody 是「模型名前缀 → 额外请求参数」的内置适配清单。
 // 仅收录参数语义为「纯输出格式开关」的模型（不改变思考行为、无副作用），
 // 让这类模型从源头把推理内容拆到 reasoning_content 字段，而非以 <think> 标签混在 content 中。
@@ -225,7 +283,7 @@ func NewOpenAIClientWithModel(apiKey, apiBaseURL, model string) *openai.Client {
 	}
 	config := openai.DefaultConfig(apiKey)
 	config.BaseURL = apiBaseURL
-	var transport openai.HTTPDoer = httpclient.NewUserAgentClient(nil)
+	transport := newProviderHTTPDoer()
 	if len(extra) > 0 {
 		transport = &extraBodyTransport{base: transport, extraBody: extra}
 	}
@@ -355,7 +413,7 @@ func ListAvailableModelsWithContext(apiKey, apiBaseURL string, timeout int) (mod
 	if apiKey != "" {
 		req.Header.Set("Authorization", "Bearer "+apiKey)
 	}
-	resp, err := httpclient.NewUserAgentClient(nil).Do(req)
+	resp, err := newProviderHTTPDoer().Do(req)
 	if err != nil {
 		logging.LogErrorf("list models [%s] failed: %s", apiBaseURL, err)
 		return
diff --git a/kernel/util/openai_attribution_test.go b/kernel/util/openai_attribution_test.go
new file mode 100644
index 00000000000..b16e71706e2
--- /dev/null
+++ b/kernel/util/openai_attribution_test.go
@@ -0,0 +1,191 @@
+// SiYuan - From thought to insight, with agents
+// Copyright (c) 2020-present, b3log.org
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package util
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"regexp"
+	"strings"
+	"testing"
+)
+
+// aimlapiPartnerIDPattern 是 AI/ML API 对 X-AIMLAPI-Partner-ID 的取值约束：
+// part_ 前缀加 1 到 64 位字母数字，不允许连字符或下划线。
+// 取值不合法时服务端不会报错，只是把请求算作无来源，因此必须由测试兜住。
+var aimlapiPartnerIDPattern = regexp.MustCompile(`^part_[A-Za-z0-9]{1,64}$`)
+
+// aimlapiSourcePattern 是 X-AIMLAPI-Source 的取值约束：<channel>/<client>，
+// channel 为 web、agent、mcp 三选一，client 为小写字母数字与连字符。
+var aimlapiSourcePattern = regexp.MustCompile(`^(web|agent|mcp)/[a-z0-9-]{1,32}$`)
+
+func TestProviderAttributionHeadersWellFormed(t *testing.T) {
+	// 内置清单里的每一项都必须是可用的取值，取值写错在运行时没有任何报错信号。
+	for host, headers := range providerAttributionHeaders {
+		if host != strings.ToLower(host) {
+			t.Errorf("attribution host [%s] must be lower case for case-insensitive lookup", host)
+		}
+		if "" == headers["HTTP-Referer"] || "" == headers["X-Title"] {
+			t.Errorf("attribution headers for [%s] must identify the calling application", host)
+		}
+		if !strings.Contains(headers["HTTP-Referer"], "siyuan") {
+			t.Errorf("HTTP-Referer for [%s] must point at SiYuan, got %q", host, headers["HTTP-Referer"])
+		}
+		if "api.aimlapi.com" != host {
+			continue
+		}
+		if partnerID := headers["X-AIMLAPI-Partner-ID"]; !aimlapiPartnerIDPattern.MatchString(partnerID) {
+			t.Errorf("X-AIMLAPI-Partner-ID %q does not match %s", partnerID, aimlapiPartnerIDPattern)
+		}
+		if source := headers["X-AIMLAPI-Source"]; !aimlapiSourcePattern.MatchString(source) {
+			t.Errorf("X-AIMLAPI-Source %q does not match %s", source, aimlapiSourcePattern)
+		}
+	}
+}
+
+func TestAttributionHeadersForHost(t *testing.T) {
+	cases := []struct {
+		host string
+		want bool
+	}{
+		{"api.aimlapi.com", true},
+		{"API.AIMLAPI.COM", true}, // 大小写不敏感
+		{" api.aimlapi.com ", true},
+		{"api.openai.com", false},
+		{"api.aimlapi.com.evil.example", false}, // 后缀伪装的域名不得命中
+		{"aimlapi.com", false},
+		{"localhost", false},
+		{"", false},
+	}
+	for _, tc := range cases {
+		got := AttributionHeadersForHost(tc.host)
+		if (0 < len(got)) != tc.want {
+			t.Errorf("AttributionHeadersForHost(%q) matched = %v, want %v", tc.host, 0 < len(got), tc.want)
+		}
+	}
+}
+
+func TestAttributionHeadersForHostReturnsCopy(t *testing.T) {
+	// 返回值必须是副本，调用方改动不得污染内置清单，否则一次改动会影响此后所有请求。
+	first := AttributionHeadersForHost("api.aimlapi.com")
+	first["X-AIMLAPI-Partner-ID"] = "tampered"
+	delete(first, "X-Title")
+
+	second := AttributionHeadersForHost("api.aimlapi.com")
+	if "part_7cceWAMI91xwz7G6FrcOEUwN" != second["X-AIMLAPI-Partner-ID"] {
+		t.Fatalf("shared attribution map was mutated, got %q", second["X-AIMLAPI-Partner-ID"])
+	}
+	if "" == second["X-Title"] {
+		t.Fatal("shared attribution map lost a key after the caller deleted it")
+	}
+}
+
+func TestAttributionTransportInjectsForKnownHost(t *testing.T) {
+	// 目标主机命中清单时，四个请求头都应出现在实际发出的请求上。
+	var captured http.Header
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		captured = r.Header.Clone()
+		w.Header().Set("Content-Type", "application/json")
+		w.Write([]byte(`{}`))
+	}))
+	defer server.Close()
+
+	// 请求写成真实的 AI/ML API 地址以命中清单，再由 redirectDoer 改投到本地测试服务器。
+	transport := &attributionTransport{base: &redirectDoer{base: server.Client(), addr: server.Listener.Addr().String()}}
+	req, _ := http.NewRequest(http.MethodPost, "https://api.aimlapi.com/v1/chat/completions", strings.NewReader("{}"))
+	resp, err := transport.Do(req)
+	if nil != err {
+		t.Fatalf("Do failed: %v", err)
+	}
+	defer resp.Body.Close()
+
+	want := map[string]string{
+		"Http-Referer":         "https://github.com/siyuan-note/siyuan",
+		"X-Title":              "SiYuan",
+		"X-Aimlapi-Source":     "agent/siyuan",
+		"X-Aimlapi-Partner-Id": "part_7cceWAMI91xwz7G6FrcOEUwN",
+	}
+	for name, value := range want {
+		if got := captured.Get(name); got != value {
+			t.Errorf("header %s = %q, want %q", name, got, value)
+		}
+	}
+}
+
+func TestAttributionTransportSkipsOtherHost(t *testing.T) {
+	// 目标主机不在清单中时（含仅仅转发同一 API 的第三方代理），一个请求头都不能带上。
+	var captured http.Header
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		captured = r.Header.Clone()
+		w.Header().Set("Content-Type", "application/json")
+		w.Write([]byte(`{}`))
+	}))
+	defer server.Close()
+
+	transport := &attributionTransport{base: server.Client()}
+	req, _ := http.NewRequest(http.MethodPost, server.URL+"/v1/chat/completions", strings.NewReader("{}"))
+	resp, err := transport.Do(req)
+	if nil != err {
+		t.Fatalf("Do failed: %v", err)
+	}
+	defer resp.Body.Close()
+
+	for _, name := range []string{"X-Aimlapi-Partner-Id", "X-Aimlapi-Source", "Http-Referer", "X-Title"} {
+		if got := captured.Get(name); "" != got {
+			t.Errorf("header %s leaked to a non-matching host: %q", name, got)
+		}
+	}
+}
+
+func TestAttributionTransportKeepsExistingHeader(t *testing.T) {
+	// 上层已经设置过的同名请求头必须原样保留，注入只补空缺、不覆盖。
+	req, _ := http.NewRequest(http.MethodPost, "https://api.aimlapi.com/v1/chat/completions", strings.NewReader("{}"))
+	req.Header.Set("X-Title", "Custom")
+
+	var captured http.Header
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		captured = r.Header.Clone()
+		w.Write([]byte(`{}`))
+	}))
+	defer server.Close()
+
+	transport := &attributionTransport{base: &redirectDoer{base: server.Client(), addr: server.Listener.Addr().String()}}
+	resp, err := transport.Do(req)
+	if nil != err {
+		t.Fatalf("Do failed: %v", err)
+	}
+	defer resp.Body.Close()
+
+	if "Custom" != captured.Get("X-Title") {
+		t.Errorf("existing X-Title was overwritten, got %q", captured.Get("X-Title"))
+	}
+	if "part_7cceWAMI91xwz7G6FrcOEUwN" != captured.Get("X-Aimlapi-Partner-Id") {
+		t.Errorf("missing header was not filled in, got %q", captured.Get("X-Aimlapi-Partner-Id"))
+	}
+}
+
+// redirectDoer 把请求改投到本地测试服务器，用于在不联网的前提下断言真实发出的请求头。
+type redirectDoer struct {
+	base *http.Client
+	addr string
+}
+
+func (d *redirectDoer) Do(req *http.Request) (*http.Response, error) {
+	req.URL.Scheme = "http"
+	req.URL.Host = d.addr
+	return d.base.Do(req)
+}