Feat/opencode zen provider

config.example.toml

@@ -20,7 +20,7 @@
 # `api_key` / `base_url` are
 # still read as DeepSeek defaults when `[providers.deepseek]` is absent
 # (backward compatibility).
-provider = "deepseek" # deepseek | deepseek-cn | deepseek-anthropic | nvidia-nim | openai | atlascloud | wanjie-ark | volcengine | openrouter | xiaomi-mimo | novita | fireworks | siliconflow | siliconflow-CN | arcee | moonshot | zai | stepfun | minimax | sglang | vllm | ollama | huggingface | together | qianfan | openai-codex | anthropic | openmodel | deepinfra | sakana
+provider = "deepseek" # deepseek | deepseek-cn | deepseek-anthropic | nvidia-nim | openai | atlascloud | wanjie-ark | volcengine | openrouter | xiaomi-mimo | novita | fireworks | siliconflow | siliconflow-CN | arcee | moonshot | zai | stepfun | minimax | sglang | vllm | ollama | huggingface | together | qianfan | openai-codex | anthropic | openmodel | deepinfra | sakana | opencode-zen
 api_key = "YOUR_DEEPSEEK_API_KEY" # must be non-empty
 base_url = "https://api.deepseek.com/beta"
 # provider = "deepseek-cn"                       # legacy alias (official host is still https://api.deepseek.com)
@@ -551,7 +551,18 @@ max_subagents = 10 # optional (1-20)
 [providers.sakana]
 # api_key = "YOUR_FUGU_API_KEY"
 # base_url = "https://api.sakana.ai/v1"
-# model = "fugu"                            # or fugu-ultra-20260615
+# model = "fugu"
+
+# OpenCode Zen Provider (https://opencode.ai/zen)
+# OpenCode Zen is a curated model gateway that provides access to
+# tested and verified models through the OpenAI Responses API.
+# Sign up at https://opencode.ai/zen, copy your API key.
+# Provider aliases: opencode-zen, opencode_zen, zen, opencode
+# Env var aliases: OPENCODE_ZEN_API_KEY, OPENCODE_API_KEY
+[providers.opencode_zen]
+# api_key = "YOUR_OPENCODE_ZEN_API_KEY"
+# base_url = "https://opencode.ai/zen/v1"
+# model = "gpt-5.5"
 
 # ─────────────────────────────────────────────────────────────────────────────────
 # Together AI Provider (https://www.together.ai/)

crates/agent/src/lib.rs

@@ -675,6 +675,14 @@ impl Default for ModelRegistry {
                 supports_tools: true,
                 supports_reasoning: true,
             },
+            // OpenCode Zen curated gateway models
+            ModelInfo {
+                id: "gpt-5.5".to_string(),
+                provider: ProviderKind::OpenCodeZen,
+                aliases: vec!["zen-gpt-5.5".to_string()],
+                supports_tools: true,
+                supports_reasoning: true,
+            },
             // Anthropic native Messages API models (#3014)
             ModelInfo {
                 id: "claude-opus-4-8".to_string(),

crates/config/src/lib.rs

@@ -159,6 +159,14 @@ pub struct ProvidersToml {
     pub deepinfra: ProviderConfigToml,
     #[serde(default, alias = "sakana-ai", alias = "sakana_ai", alias = "fugu")]
     pub sakana: ProviderConfigToml,
+    #[serde(
+        default,
+        alias = "opencode-zen",
+        alias = "opencode_zen",
+        alias = "zen",
+        alias = "opencode"
+    )]
+    pub opencode_zen: ProviderConfigToml,
     /// Catch-all table for the dynamic OpenAI-compatible custom provider
     /// identity (#1519). Arbitrary `[providers.<name>]` tables are handled by
     /// the tui-side flatten map; this named slot keeps the canonical
@@ -257,6 +265,7 @@ impl ProvidersToml {
             ProviderKind::Minimax => &self.minimax,
             ProviderKind::Deepinfra => &self.deepinfra,
             ProviderKind::Sakana => &self.sakana,
+            ProviderKind::OpenCodeZen => &self.opencode_zen,
             ProviderKind::Custom => &self.custom,
         }
     }
@@ -292,6 +301,7 @@ impl ProvidersToml {
             ProviderKind::Minimax => &mut self.minimax,
             ProviderKind::Deepinfra => &mut self.deepinfra,
             ProviderKind::Sakana => &mut self.sakana,
+            ProviderKind::OpenCodeZen => &mut self.opencode_zen,
             ProviderKind::Custom => &mut self.custom,
         }
     }
@@ -1944,6 +1954,7 @@ impl ConfigToml {
                 ProviderKind::Minimax => DEFAULT_MINIMAX_BASE_URL.to_string(),
                 ProviderKind::Deepinfra => DEFAULT_DEEPINFRA_BASE_URL.to_string(),
                 ProviderKind::Sakana => DEFAULT_SAKANA_BASE_URL.to_string(),
+                ProviderKind::OpenCodeZen => DEFAULT_OPENCODE_ZEN_BASE_URL.to_string(),
                 // The custom provider has no built-in endpoint; fall back to its
                 // descriptor placeholder so the lookup is total. Real custom
                 // routes always supply a configured base_url before this point.
@@ -2520,6 +2531,7 @@ fn default_model_for_provider(provider: ProviderKind) -> &'static str {
         ProviderKind::Minimax => DEFAULT_MINIMAX_MODEL,
         ProviderKind::Deepinfra => DEFAULT_DEEPINFRA_MODEL,
         ProviderKind::Sakana => DEFAULT_SAKANA_MODEL,
+        ProviderKind::OpenCodeZen => DEFAULT_OPENCODE_ZEN_MODEL,
         // No built-in default model; the registry placeholder keeps this total.
         ProviderKind::Custom => provider.provider().default_model(),
     }
@@ -2556,6 +2568,7 @@ fn default_base_url_for_provider(provider: ProviderKind) -> &'static str {
         ProviderKind::Minimax => DEFAULT_MINIMAX_BASE_URL,
         ProviderKind::Deepinfra => DEFAULT_DEEPINFRA_BASE_URL,
         ProviderKind::Sakana => DEFAULT_SAKANA_BASE_URL,
+        ProviderKind::OpenCodeZen => DEFAULT_OPENCODE_ZEN_BASE_URL,
         // No built-in default base URL; the registry placeholder keeps this total.
         ProviderKind::Custom => provider.provider().default_base_url(),
     }
@@ -4082,6 +4095,8 @@ struct EnvRuntimeOverrides {
     deepinfra_model: Option<String>,
     sakana_base_url: Option<String>,
     sakana_model: Option<String>,
+    opencode_zen_base_url: Option<String>,
+    opencode_zen_model: Option<String>,
 }
 
 impl EnvRuntimeOverrides {
@@ -4314,6 +4329,10 @@ impl EnvRuntimeOverrides {
             deepinfra_model: std::env::var("DEEPINFRA_MODEL")
                 .ok()
                 .filter(|v| !v.trim().is_empty()),
+            opencode_zen_base_url: std::env::var("OPENCODE_ZEN_BASE_URL")
+                .or_else(|_| std::env::var("OPENCODE_ZEN_BASE"))
+                .ok(),
+            opencode_zen_model: std::env::var("OPENCODE_ZEN_MODEL").ok(),
             sakana_base_url: std::env::var("SAKANA_BASE_URL")
                 .ok()
                 .filter(|v| !v.trim().is_empty()),
@@ -4371,6 +4390,7 @@ impl EnvRuntimeOverrides {
             ProviderKind::Minimax => self.minimax_base_url.clone(),
             ProviderKind::Deepinfra => self.deepinfra_base_url.clone(),
             ProviderKind::Sakana => self.sakana_base_url.clone(),
+            ProviderKind::OpenCodeZen => self.opencode_zen_base_url.clone(),
             // No dedicated CODEWHALE_CUSTOM_BASE_URL env override: a custom
             // provider's base URL comes from its `[providers.<name>]` table.
             ProviderKind::Custom => None,
@@ -4401,6 +4421,7 @@ impl EnvRuntimeOverrides {
             ProviderKind::Minimax => self.minimax_model.clone(),
             ProviderKind::Deepinfra => self.deepinfra_model.clone(),
             ProviderKind::Sakana => self.sakana_model.clone(),
+            ProviderKind::OpenCodeZen => self.opencode_zen_model.clone(),
             _ => None,
         }?;
 

crates/config/src/provider.rs

@@ -14,16 +14,16 @@ use super::{
     DEFAULT_MOONSHOT_MODEL, DEFAULT_NOVITA_BASE_URL, DEFAULT_NOVITA_MODEL,
     DEFAULT_NVIDIA_NIM_BASE_URL, DEFAULT_NVIDIA_NIM_MODEL, DEFAULT_OLLAMA_BASE_URL,
     DEFAULT_OLLAMA_MODEL, DEFAULT_OPENAI_BASE_URL, DEFAULT_OPENAI_CODEX_BASE_URL,
-    DEFAULT_OPENAI_CODEX_MODEL, DEFAULT_OPENAI_MODEL, DEFAULT_OPENMODEL_BASE_URL,
-    DEFAULT_OPENMODEL_MODEL, DEFAULT_OPENROUTER_BASE_URL, DEFAULT_OPENROUTER_MODEL,
-    DEFAULT_QIANFAN_BASE_URL, DEFAULT_QIANFAN_MODEL, DEFAULT_SAKANA_BASE_URL, DEFAULT_SAKANA_MODEL,
-    DEFAULT_SGLANG_BASE_URL, DEFAULT_SGLANG_MODEL, DEFAULT_SILICONFLOW_BASE_URL,
-    DEFAULT_SILICONFLOW_CN_BASE_URL, DEFAULT_SILICONFLOW_MODEL, DEFAULT_STEPFUN_BASE_URL,
-    DEFAULT_STEPFUN_MODEL, DEFAULT_TOGETHER_BASE_URL, DEFAULT_TOGETHER_MODEL,
-    DEFAULT_VLLM_BASE_URL, DEFAULT_VLLM_MODEL, DEFAULT_VOLCENGINE_BASE_URL,
-    DEFAULT_VOLCENGINE_MODEL, DEFAULT_WANJIE_ARK_BASE_URL, DEFAULT_WANJIE_ARK_MODEL,
-    DEFAULT_XIAOMI_MIMO_BASE_URL, DEFAULT_XIAOMI_MIMO_MODEL, DEFAULT_ZAI_BASE_URL,
-    DEFAULT_ZAI_MODEL, ProviderKind,
+    DEFAULT_OPENAI_CODEX_MODEL, DEFAULT_OPENAI_MODEL, DEFAULT_OPENCODE_ZEN_BASE_URL,
+    DEFAULT_OPENCODE_ZEN_MODEL, DEFAULT_OPENMODEL_BASE_URL, DEFAULT_OPENMODEL_MODEL,
+    DEFAULT_OPENROUTER_BASE_URL, DEFAULT_OPENROUTER_MODEL, DEFAULT_QIANFAN_BASE_URL,
+    DEFAULT_QIANFAN_MODEL, DEFAULT_SAKANA_BASE_URL, DEFAULT_SAKANA_MODEL, DEFAULT_SGLANG_BASE_URL,
+    DEFAULT_SGLANG_MODEL, DEFAULT_SILICONFLOW_BASE_URL, DEFAULT_SILICONFLOW_CN_BASE_URL,
+    DEFAULT_SILICONFLOW_MODEL, DEFAULT_STEPFUN_BASE_URL, DEFAULT_STEPFUN_MODEL,
+    DEFAULT_TOGETHER_BASE_URL, DEFAULT_TOGETHER_MODEL, DEFAULT_VLLM_BASE_URL, DEFAULT_VLLM_MODEL,
+    DEFAULT_VOLCENGINE_BASE_URL, DEFAULT_VOLCENGINE_MODEL, DEFAULT_WANJIE_ARK_BASE_URL,
+    DEFAULT_WANJIE_ARK_MODEL, DEFAULT_XIAOMI_MIMO_BASE_URL, DEFAULT_XIAOMI_MIMO_MODEL,
+    DEFAULT_ZAI_BASE_URL, DEFAULT_ZAI_MODEL, ProviderKind,
 };
 
 /// Wire protocol spoken by a provider.
@@ -594,6 +594,47 @@ provider!(
     aliases: ["sakana-ai", "sakana_ai", "fugu"]
 );
 
+/// OpenCode Zen curated model gateway using the Responses API.
+pub struct OpenCodeZen;
+
+impl Provider for OpenCodeZen {
+    fn id(&self) -> &'static str {
+        "opencode-zen"
+    }
+
+    fn kind(&self) -> ProviderKind {
+        ProviderKind::OpenCodeZen
+    }
+
+    fn display_name(&self) -> &'static str {
+        "OpenCode Zen"
+    }
+
+    fn default_base_url(&self) -> &'static str {
+        DEFAULT_OPENCODE_ZEN_BASE_URL
+    }
+
+    fn default_model(&self) -> &'static str {
+        DEFAULT_OPENCODE_ZEN_MODEL
+    }
+
+    fn env_vars(&self) -> &'static [&'static str] {
+        &["OPENCODE_ZEN_API_KEY", "OPENCODE_API_KEY"]
+    }
+
+    fn provider_config_key(&self) -> &'static str {
+        "opencode_zen"
+    }
+
+    fn aliases(&self) -> &'static [&'static str] {
+        &["opencode_zen", "opencodezen", "zen", "opencode"]
+    }
+
+    fn wire(&self) -> WireFormat {
+        WireFormat::Responses
+    }
+}
+
 /// User-defined OpenAI-compatible endpoint (#1519).
 ///
 /// A single dynamic provider identity for arbitrary `[providers.<name>]
@@ -676,9 +717,10 @@ static STEPFUN: Stepfun = Stepfun;
 static MINIMAX: Minimax = Minimax;
 static DEEPINFRA: Deepinfra = Deepinfra;
 static SAKANA: Sakana = Sakana;
+static OPENCODE_ZEN: OpenCodeZen = OpenCodeZen;
 static CUSTOM: Custom = Custom;
 
-static PROVIDER_REGISTRY: [&dyn Provider; 30] = [
+static PROVIDER_REGISTRY: [&dyn Provider; 31] = [
     &DEEPSEEK,
     &DEEPSEEK_ANTHROPIC,
     &NVIDIA_NIM,
@@ -708,6 +750,7 @@ static PROVIDER_REGISTRY: [&dyn Provider; 30] = [
     &MINIMAX,
     &DEEPINFRA,
     &SAKANA,
+    &OPENCODE_ZEN,
     &CUSTOM,
 ];
 

crates/config/src/provider_defaults.rs

@@ -130,3 +130,6 @@ pub(crate) const DEFAULT_DEEPINFRA_BASE_URL: &str = "https://api.deepinfra.com/v
 // Sakana AI Fugu defaults
 pub(crate) const DEFAULT_SAKANA_MODEL: &str = "fugu";
 pub(crate) const DEFAULT_SAKANA_BASE_URL: &str = "https://api.sakana.ai/v1";
+// OpenCode Zen defaults
+pub(crate) const DEFAULT_OPENCODE_ZEN_MODEL: &str = "gpt-5.5";
+pub(crate) const DEFAULT_OPENCODE_ZEN_BASE_URL: &str = "https://opencode.ai/zen/v1";

crates/config/src/provider_kind.rs

@@ -100,6 +100,13 @@ pub enum ProviderKind {
     Deepinfra,
     #[serde(alias = "sakana-ai", alias = "sakana_ai", alias = "fugu")]
     Sakana,
+    #[serde(
+        alias = "opencode-zen",
+        alias = "opencode_zen",
+        alias = "zen",
+        alias = "opencode"
+    )]
+    OpenCodeZen,
     /// User-defined OpenAI-compatible endpoint (#1519).
     ///
     /// A single dynamic identity for arbitrary `[providers.<name>]
@@ -111,7 +118,7 @@ pub enum ProviderKind {
 }
 
 impl ProviderKind {
-    pub const ALL: [Self; 30] = [
+    pub const ALL: [Self; 31] = [
         Self::Deepseek,
         Self::DeepseekAnthropic,
         Self::NvidiaNim,
@@ -141,6 +148,7 @@ impl ProviderKind {
         Self::Minimax,
         Self::Deepinfra,
         Self::Sakana,
+        Self::OpenCodeZen,
         Self::Custom,
     ];
 

crates/config/src/route/tests.rs

@@ -160,7 +160,7 @@ fn descriptor_protocol_matches_provider_wire() {
             "{kind:?} protocol must equal provider().wire()"
         );
         let expected = match kind {
-            ProviderKind::OpenaiCodex => RequestProtocol::Responses,
+            ProviderKind::OpenaiCodex | ProviderKind::OpenCodeZen => RequestProtocol::Responses,
             ProviderKind::DeepseekAnthropic | ProviderKind::Anthropic | ProviderKind::Openmodel => {
                 RequestProtocol::AnthropicMessages
             }

crates/config/src/tests.rs

@@ -3396,7 +3396,9 @@ fn provider_metadata_defaults_match_runtime_helpers() {
         // speaks the native Messages API; every other built-in provider
         // is OpenAI-compatible Chat Completions.
         let expected_wire = match kind {
-            ProviderKind::OpenaiCodex => provider::WireFormat::Responses,
+            ProviderKind::OpenaiCodex | ProviderKind::OpenCodeZen => {
+                provider::WireFormat::Responses
+            }
             ProviderKind::Anthropic | ProviderKind::DeepseekAnthropic | ProviderKind::Openmodel => {
                 provider::WireFormat::AnthropicMessages
             }

crates/tui/src/client.rs

@@ -1718,6 +1718,7 @@ pub(super) fn apply_reasoning_effort(
             }
             ApiProvider::Stepfun => {}
             ApiProvider::Sakana => {}
+            ApiProvider::OpenCodeZen => {}
         },
         "low" | "minimal" | "medium" | "mid" | "high" | "" => match provider {
             // DeepSeek compatibility: low/medium both map to high
@@ -1807,6 +1808,7 @@ pub(super) fn apply_reasoning_effort(
             }
             ApiProvider::Stepfun => {}
             ApiProvider::Sakana => {}
+            ApiProvider::OpenCodeZen => {}
         },
         "xhigh" | "max" | "highest" | "ultracode" => match provider {
             ApiProvider::Deepseek
@@ -1876,6 +1878,7 @@ pub(super) fn apply_reasoning_effort(
             }
             ApiProvider::Stepfun => {}
             ApiProvider::Sakana => {}
+            ApiProvider::OpenCodeZen => {}
         },
         _ => {}
     }