feat(llm): add GitHub Copilot as a first-class LLM provider

interface/src/api/client.ts

@@ -931,6 +931,7 @@ export interface ProviderStatus {
 	minimax_cn: boolean;
 	moonshot: boolean;
 	zai_coding_plan: boolean;
+	github_copilot: boolean;
 }
 
 export interface ProvidersResponse {

interface/src/components/ModelSelect.tsx

@@ -31,6 +31,7 @@ const PROVIDER_LABELS: Record<string, string> = {
   "opencode-go": "OpenCode Go",
   minimax: "MiniMax",
   "minimax-cn": "MiniMax CN",
+  "github-copilot": "GitHub Copilot",
 };
 
 function formatContextWindow(tokens: number | null): string {
@@ -134,6 +135,7 @@ export function ModelSelect({
     "anthropic",
     "openai",
     "openai-chatgpt",
+    "github-copilot",
     "ollama",
     "deepseek",
     "xai",

interface/src/lib/providerIcons.tsx

@@ -12,6 +12,7 @@ import ZAI from "@lobehub/icons/es/ZAI";
 import Minimax from "@lobehub/icons/es/Minimax";
 import Kimi from "@lobehub/icons/es/Kimi";
 import Google from "@lobehub/icons/es/Google";
+import GithubCopilot from "@lobehub/icons/es/GithubCopilot";
 
 interface IconProps {
 	size?: number;
@@ -138,6 +139,7 @@ export function ProviderIcon({ provider, className = "text-ink-faint", size = 24
 		minimax: Minimax,
 		"minimax-cn": Minimax,
 		moonshot: Kimi, // Kimi is Moonshot AI's product brand
+		"github-copilot": GithubCopilot,
 	};
 
 	const IconComponent = iconMap[provider.toLowerCase()];

interface/src/routes/Settings.tsx

@@ -242,6 +242,14 @@ const PROVIDERS = [
 		envVar: "MOONSHOT_API_KEY",
 		defaultModel: "moonshot/kimi-k2.5",
 	},
+	{
+		id: "github-copilot",
+		name: "GitHub Copilot",
+		description: "GitHub Copilot API (uses GitHub PAT for token exchange)",
+		placeholder: "ghp_... or gh auth token",
+		envVar: "GITHUB_COPILOT_API_KEY",
+		defaultModel: "github-copilot/claude-sonnet-4",
+	},
 	{
 		id: "ollama",
 		name: "Ollama",

src/api/providers.rs

@@ -60,6 +60,7 @@ pub(super) struct ProviderStatus {
     minimax_cn: bool,
     moonshot: bool,
     zai_coding_plan: bool,
+    github_copilot: bool,
 }
 
 #[derive(Serialize)]
@@ -146,6 +147,7 @@ fn provider_toml_key(provider: &str) -> Option<&'static str> {
         "minimax-cn" => Some("minimax_cn_key"),
         "moonshot" => Some("moonshot_key"),
         "zai-coding-plan" => Some("zai_coding_plan_key"),
+        "github-copilot" => Some("github_copilot_key"),
         _ => None,
     }
 }
@@ -214,6 +216,7 @@ fn build_test_llm_config(provider: &str, credential: &str) -> crate::config::Llm
         minimax_cn_key: (provider == "minimax-cn").then(|| credential.to_string()),
         moonshot_key: (provider == "moonshot").then(|| credential.to_string()),
         zai_coding_plan_key: (provider == "zai-coding-plan").then(|| credential.to_string()),
+        github_copilot_key: (provider == "github-copilot").then(|| credential.to_string()),
         providers,
     }
 }
@@ -369,6 +372,7 @@ pub(super) async fn get_providers(
         minimax_cn,
         moonshot,
         zai_coding_plan,
+        github_copilot,
     ) = if config_path.exists() {
         let content = tokio::fs::read_to_string(&config_path)
             .await
@@ -413,6 +417,7 @@ pub(super) async fn get_providers(
             has_value("minimax_cn_key", "MINIMAX_CN_API_KEY"),
             has_value("moonshot_key", "MOONSHOT_API_KEY"),
             has_value("zai_coding_plan_key", "ZAI_CODING_PLAN_API_KEY"),
+            has_value("github_copilot_key", "GITHUB_COPILOT_API_KEY"),
         )
     } else {
         (
@@ -437,6 +442,7 @@ pub(super) async fn get_providers(
             std::env::var("MINIMAX_CN_API_KEY").is_ok(),
             std::env::var("MOONSHOT_API_KEY").is_ok(),
             std::env::var("ZAI_CODING_PLAN_API_KEY").is_ok(),
+            std::env::var("GITHUB_COPILOT_API_KEY").is_ok(),
         )
     };
 
@@ -462,6 +468,7 @@ pub(super) async fn get_providers(
         minimax_cn,
         moonshot,
         zai_coding_plan,
+        github_copilot,
     };
     let has_any = providers.anthropic
         || providers.openai
@@ -483,7 +490,8 @@ pub(super) async fn get_providers(
         || providers.minimax
         || providers.minimax_cn
         || providers.moonshot
-        || providers.zai_coding_plan;
+        || providers.zai_coding_plan
+        || providers.github_copilot;
 
     Ok(Json(ProvidersResponse { providers, has_any }))
 }
@@ -914,6 +922,21 @@ pub(super) async fn delete_provider(
         }));
     }
 
+    // GitHub Copilot has a cached token file alongside the TOML key.
+    // Remove both the TOML key and the cached token.
+    if provider == "github-copilot" {
+        let instance_dir = (**state.instance_dir.load()).clone();
+        let token_path = crate::github_copilot_auth::credentials_path(&instance_dir);
+        if token_path.exists() {
+            tokio::fs::remove_file(&token_path)
+                .await
+                .map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?;
+        }
+        if let Some(manager) = state.llm_manager.read().await.as_ref() {
+            manager.clear_copilot_token().await;
+        }
+    }
+
     let Some(key_name) = provider_toml_key(&provider) else {
         return Ok(Json(ProviderUpdateResponse {
             success: false,

src/config/load.rs

@@ -1,12 +1,13 @@
 use super::providers::{
     ANTHROPIC_PROVIDER_BASE_URL, DEEPSEEK_PROVIDER_BASE_URL, FIREWORKS_PROVIDER_BASE_URL,
-    GEMINI_PROVIDER_BASE_URL, GROQ_PROVIDER_BASE_URL, KILO_PROVIDER_BASE_URL,
-    MINIMAX_CN_PROVIDER_BASE_URL, MINIMAX_PROVIDER_BASE_URL, MISTRAL_PROVIDER_BASE_URL,
-    MOONSHOT_PROVIDER_BASE_URL, NVIDIA_PROVIDER_BASE_URL, OLLAMA_PROVIDER_BASE_URL,
-    OPENAI_PROVIDER_BASE_URL, OPENCODE_GO_PROVIDER_BASE_URL, OPENCODE_ZEN_PROVIDER_BASE_URL,
-    OPENROUTER_PROVIDER_BASE_URL, TOGETHER_PROVIDER_BASE_URL, XAI_PROVIDER_BASE_URL,
-    ZAI_CODING_PLAN_BASE_URL, ZHIPU_PROVIDER_BASE_URL, add_shorthand_provider,
-    infer_routing_from_providers, openrouter_extra_headers, resolve_routing,
+    GEMINI_PROVIDER_BASE_URL, GITHUB_COPILOT_DEFAULT_BASE_URL, GROQ_PROVIDER_BASE_URL,
+    KILO_PROVIDER_BASE_URL, MINIMAX_CN_PROVIDER_BASE_URL, MINIMAX_PROVIDER_BASE_URL,
+    MISTRAL_PROVIDER_BASE_URL, MOONSHOT_PROVIDER_BASE_URL, NVIDIA_PROVIDER_BASE_URL,
+    OLLAMA_PROVIDER_BASE_URL, OPENAI_PROVIDER_BASE_URL, OPENCODE_GO_PROVIDER_BASE_URL,
+    OPENCODE_ZEN_PROVIDER_BASE_URL, OPENROUTER_PROVIDER_BASE_URL, TOGETHER_PROVIDER_BASE_URL,
+    XAI_PROVIDER_BASE_URL, ZAI_CODING_PLAN_BASE_URL, ZHIPU_PROVIDER_BASE_URL,
+    add_shorthand_provider, infer_routing_from_providers, openrouter_extra_headers,
+    resolve_routing,
 };
 use super::toml_schema::*;
 use super::{
@@ -430,6 +431,7 @@ impl Config {
             minimax_cn_key: std::env::var("MINIMAX_CN_API_KEY").ok(),
             moonshot_key: std::env::var("MOONSHOT_API_KEY").ok(),
             zai_coding_plan_key: std::env::var("ZAI_CODING_PLAN_API_KEY").ok(),
+            github_copilot_key: std::env::var("GITHUB_COPILOT_API_KEY").ok(),
             providers: HashMap::new(),
         };
 
@@ -510,6 +512,16 @@ impl Config {
             false,
         );
 
+        add_shorthand_provider(
+            &mut llm.providers,
+            "github-copilot",
+            llm.github_copilot_key.clone(),
+            ApiType::OpenAiChatCompletions,
+            GITHUB_COPILOT_DEFAULT_BASE_URL,
+            Some("GitHub Copilot"),
+            true,
+        );
+
         if let Some(minimax_key) = llm.minimax_key.clone() {
             llm.providers
                 .entry("minimax".to_string())
@@ -1060,6 +1072,12 @@ impl Config {
                 .as_deref()
                 .and_then(resolve_env_value)
                 .or_else(|| std::env::var("ZAI_CODING_PLAN_API_KEY").ok()),
+            github_copilot_key: toml
+                .llm
+                .github_copilot_key
+                .as_deref()
+                .and_then(resolve_env_value)
+                .or_else(|| std::env::var("GITHUB_COPILOT_API_KEY").ok()),
             providers: toml
                 .llm
                 .providers
@@ -1186,6 +1204,16 @@ impl Config {
             false,
         );
 
+        add_shorthand_provider(
+            &mut llm.providers,
+            "github-copilot",
+            llm.github_copilot_key.clone(),
+            ApiType::OpenAiChatCompletions,
+            GITHUB_COPILOT_DEFAULT_BASE_URL,
+            Some("GitHub Copilot"),
+            true,
+        );
+
         if let Some(minimax_key) = llm.minimax_key.clone() {
             llm.providers
                 .entry("minimax".to_string())

src/config/providers.rs

@@ -26,6 +26,7 @@ pub(super) const NVIDIA_PROVIDER_BASE_URL: &str = "https://integrate.api.nvidia.
 pub(super) const FIREWORKS_PROVIDER_BASE_URL: &str = "https://api.fireworks.ai/inference";
 pub(crate) const GEMINI_PROVIDER_BASE_URL: &str =
     "https://generativelanguage.googleapis.com/v1beta/openai";
+pub(super) const GITHUB_COPILOT_DEFAULT_BASE_URL: &str = "https://api.individual.githubcopilot.com";
 
 /// App attribution headers sent with every OpenRouter API request.
 /// See <https://openrouter.ai/docs/app-attribution>.
@@ -213,6 +214,9 @@ pub(crate) fn default_provider_config(
             use_bearer_auth: false,
             extra_headers: vec![],
         },
+        // GitHub Copilot requires token exchange and dynamic base URL derivation.
+        // The test path should use LlmManager::get_github_copilot_provider() instead.
+        "github-copilot" => return None,
         _ => return None,
     })
 }
@@ -274,6 +278,7 @@ pub(super) fn infer_routing_from_providers(
         "minimax-cn",
         "moonshot",
         "zai-coding-plan",
+        "github-copilot",
     ];
 
     for &name in PRIORITY {

src/config/toml_schema.rs

@@ -176,6 +176,7 @@ pub(super) struct TomlLlmConfigFields {
     pub(super) minimax_cn_key: Option<String>,
     pub(super) moonshot_key: Option<String>,
     pub(super) zai_coding_plan_key: Option<String>,
+    pub(super) github_copilot_key: Option<String>,
     #[serde(default)]
     pub(super) providers: HashMap<String, TomlProviderConfig>,
     #[serde(default)]
@@ -206,6 +207,7 @@ pub(super) struct TomlLlmConfig {
     pub(super) minimax_cn_key: Option<String>,
     pub(super) moonshot_key: Option<String>,
     pub(super) zai_coding_plan_key: Option<String>,
+    pub(super) github_copilot_key: Option<String>,
     pub(super) providers: HashMap<String, TomlProviderConfig>,
 }
 
@@ -261,6 +263,7 @@ impl<'de> Deserialize<'de> for TomlLlmConfig {
             minimax_cn_key: fields.minimax_cn_key,
             moonshot_key: fields.moonshot_key,
             zai_coding_plan_key: fields.zai_coding_plan_key,
+            github_copilot_key: fields.github_copilot_key,
             providers: fields.providers,
         })
     }

src/config/types.rs

@@ -269,6 +269,7 @@ pub struct LlmConfig {
     pub minimax_cn_key: Option<String>,
     pub moonshot_key: Option<String>,
     pub zai_coding_plan_key: Option<String>,
+    pub github_copilot_key: Option<String>,
     pub providers: HashMap<String, ProviderConfig>,
 }
 
@@ -340,6 +341,10 @@ impl std::fmt::Debug for LlmConfig {
                 "zai_coding_plan_key",
                 &self.zai_coding_plan_key.as_ref().map(|_| "[REDACTED]"),
             )
+            .field(
+                "github_copilot_key",
+                &self.github_copilot_key.as_ref().map(|_| "[REDACTED]"),
+            )
             .field("providers", &self.providers)
             .finish()
     }
@@ -369,6 +374,7 @@ impl LlmConfig {
             || self.minimax_cn_key.is_some()
             || self.moonshot_key.is_some()
             || self.zai_coding_plan_key.is_some()
+            || self.github_copilot_key.is_some()
             || !self.providers.is_empty()
     }
 }
@@ -500,6 +506,11 @@ impl SystemSecrets for LlmConfig {
                 secret_name: "SAMBANOVA_API_KEY",
                 instance_pattern: None,
             },
+            SecretField {
+                toml_key: "github_copilot_key",
+                secret_name: "GITHUB_COPILOT_API_KEY",
+                instance_pattern: None,
+            },
         ]
     }
 }