diff --git a/src-tauri/src/agents/commands.rs b/src-tauri/src/agents/commands.rs
index 4d543ba..b02a3e6 100644
--- a/src-tauri/src/agents/commands.rs
+++ b/src-tauri/src/agents/commands.rs
@@ -16,6 +16,7 @@ pub(crate) fn inspect_agent_config_statuses(
         AgentClient::OpenCode,
         AgentClient::OpenClaw,
         AgentClient::Hermes,
+        AgentClient::DeepSeekHarness,
     ]
     .into_iter()
     .map(|client| inspect_agent_config(client, &home, config.port, api_key))
diff --git a/src-tauri/src/agents/configuration.rs b/src-tauri/src/agents/configuration.rs
index e527b37..a7ae96a 100644
--- a/src-tauri/src/agents/configuration.rs
+++ b/src-tauri/src/agents/configuration.rs
@@ -189,6 +189,31 @@ pub(crate) fn build_agent_updates_with_oauth(
                 after,
             }])
         }
+        AgentClient::DeepSeekHarness => {
+            if paths.len() != 2 {
+                return Err("DeepSeek Harness 配置路径数量无效".to_string());
+            }
+            let settings_before = read_optional_text(&paths[0])?;
+            let credentials_before = read_optional_text(&paths[1])?;
+            Ok(vec![
+                AgentFileUpdate {
+                    path: paths[0].clone(),
+                    after: build_deepseek_harness_settings(
+                        settings_before.as_deref(),
+                        &openai_base,
+                        model,
+                        models,
+                    )?,
+                },
+                AgentFileUpdate {
+                    path: paths[1].clone(),
+                    after: build_deepseek_harness_credentials(
+                        credentials_before.as_deref(),
+                        api_key,
+                    )?,
+                },
+            ])
+        }
     }
 }
 
@@ -201,6 +226,187 @@ pub(crate) fn read_optional_text(path: &Path) -> Result<Option<String>, String>
         .map_err(|error| format!("读取配置失败 {}: {error}", path_to_string(path)))
 }
 
+pub(crate) fn read_agent_yaml_mapping_or_empty(
+    path: &Path,
+    label: &str,
+) -> Result<serde_norway::Mapping, String> {
+    if !path.is_file() {
+        return Ok(serde_norway::Mapping::new());
+    }
+    let content = fs::read_to_string(path)
+        .map_err(|error| format!("读取 {label} 失败 {}: {error}", path_to_string(path)))?;
+    parse_agent_yaml_mapping(Some(&content), label)
+}
+
+pub(crate) fn parse_agent_yaml_mapping(
+    content: Option<&str>,
+    label: &str,
+) -> Result<serde_norway::Mapping, String> {
+    let Some(content) = content.map(str::trim).filter(|content| !content.is_empty()) else {
+        return Ok(serde_norway::Mapping::new());
+    };
+    serde_norway::from_str::<serde_norway::Value>(content)
+        .map_err(|error| format!("{label} YAML 格式无效: {error}"))?
+        .as_mapping()
+        .cloned()
+        .ok_or_else(|| format!("{label} 根节点必须是 YAML 映射"))
+}
+
+pub(crate) fn render_agent_yaml_mapping_update<F>(
+    existing: Option<&str>,
+    label: &str,
+    update: F,
+) -> Result<String, String>
+where
+    F: FnOnce(&mut serde_norway::Mapping) -> Result<(), String>,
+{
+    let original_mapping = parse_agent_yaml_mapping(existing, label)?;
+    let original = serde_norway::Value::Mapping(original_mapping.clone());
+    let mut updated_mapping = original_mapping;
+    update(&mut updated_mapping)?;
+    let updated = serde_norway::Value::Mapping(updated_mapping);
+    if updated == original {
+        return Ok(existing.unwrap_or("{}\n").to_string());
+    }
+    let source = existing
+        .map(str::trim)
+        .filter(|content| !content.is_empty())
+        .map(|_| existing.unwrap_or_default())
+        .unwrap_or("{}\n");
+    let mut document = yaml_serde_edit::YamlValue::parse(source)
+        .map_err(|error| format!("{label} YAML 格式无效: {error}"))?;
+    render_updated_core_yaml(&mut document, updated)
+        .map_err(|error| format!("更新 {label} 失败: {error}"))
+}
+
+pub(crate) fn build_deepseek_harness_models(
+    models: &[AgentModelOption],
+    selected_model: &str,
+) -> Result<serde_norway::Value, String> {
+    let entries = ordered_agent_models(models, selected_model)
+        .into_iter()
+        .map(|model| {
+            let mut entry = serde_norway::Mapping::new();
+            entry.insert(yaml_key("id"), serde_norway::Value::String(model.name));
+            if let Some(name) = model.alias.filter(|name| !name.trim().is_empty()) {
+                entry.insert(yaml_key("name"), serde_norway::Value::String(name));
+            }
+            if let Some(context_window) = model.context_window {
+                entry.insert(
+                    yaml_key("contextWindow"),
+                    serde_norway::to_value(context_window)
+                        .map_err(|error| format!("序列化 Harness 模型上下文失败: {error}"))?,
+                );
+            }
+            Ok(serde_norway::Value::Mapping(entry))
+        })
+        .collect::<Result<Vec<_>, String>>()?;
+    Ok(serde_norway::Value::Sequence(entries))
+}
+
+pub(crate) fn build_deepseek_harness_settings(
+    existing: Option<&str>,
+    base_url: &str,
+    model: &str,
+    models: &[AgentModelOption],
+) -> Result<String, String> {
+    let published_models = build_deepseek_harness_models(models, model)?;
+    render_agent_yaml_mapping_update(existing, "DeepSeek Harness settings", |root| {
+        let llm = root
+            .entry(yaml_key("llm-pi-ai"))
+            .or_insert_with(|| serde_norway::Value::Mapping(serde_norway::Mapping::new()))
+            .as_mapping_mut()
+            .ok_or_else(|| "DeepSeek Harness llm-pi-ai 必须是映射".to_string())?;
+        let providers = llm
+            .entry(yaml_key("providers"))
+            .or_insert_with(|| serde_norway::Value::Mapping(serde_norway::Mapping::new()))
+            .as_mapping_mut()
+            .ok_or_else(|| "DeepSeek Harness llm-pi-ai.providers 必须是映射".to_string())?;
+        let provider = providers
+            .entry(yaml_key(DEEPSEEK_HARNESS_PROVIDER_ID))
+            .or_insert_with(|| serde_norway::Value::Mapping(serde_norway::Mapping::new()))
+            .as_mapping_mut()
+            .ok_or_else(|| "DeepSeek Harness EasyCLIProxyAPI provider 必须是映射".to_string())?;
+        for (key, value) in [
+            ("displayName", "EasyCLIProxyAPI"),
+            ("apiKeyEnv", DEEPSEEK_HARNESS_CREDENTIAL),
+            ("api", "openai-completions"),
+            ("baseURL", base_url),
+        ] {
+            provider.insert(
+                yaml_key(key),
+                serde_norway::Value::String(value.to_string()),
+            );
+        }
+        provider.insert(yaml_key("models"), published_models);
+
+        let selection = root
+            .entry(yaml_key("agent-default-model"))
+            .or_insert_with(|| serde_norway::Value::Mapping(serde_norway::Mapping::new()))
+            .as_mapping_mut()
+            .ok_or_else(|| "DeepSeek Harness agent-default-model 必须是映射".to_string())?;
+        selection.insert(
+            yaml_key("provider"),
+            serde_norway::Value::String(DEEPSEEK_HARNESS_PROVIDER_ID.to_string()),
+        );
+        selection.insert(
+            yaml_key("model"),
+            serde_norway::Value::String(model.to_string()),
+        );
+        selection.remove(yaml_key("reasoningEffort"));
+        Ok(())
+    })
+}
+
+pub(crate) fn build_deepseek_harness_credentials(
+    existing: Option<&str>,
+    api_key: &str,
+) -> Result<String, String> {
+    render_agent_yaml_mapping_update(existing, "DeepSeek Harness credentials", |root| {
+        root.insert(
+            yaml_key(DEEPSEEK_HARNESS_CREDENTIAL),
+            serde_norway::Value::String(api_key.to_string()),
+        );
+        Ok(())
+    })
+}
+
+pub(crate) fn write_deepseek_harness_file(
+    path: &Path,
+    content: &[u8],
+    owner_only: bool,
+) -> Result<(), String> {
+    write_bytes_directly(path, content)?;
+    #[cfg(unix)]
+    if owner_only {
+        use std::os::unix::fs::PermissionsExt;
+
+        fs::set_permissions(path, fs::Permissions::from_mode(0o600)).map_err(|error| {
+            format!(
+                "设置 DeepSeek Harness 凭据权限失败 {}: {error}",
+                path_to_string(path)
+            )
+        })?;
+    }
+    #[cfg(not(unix))]
+    let _ = owner_only;
+    Ok(())
+}
+
+pub(crate) fn write_agent_configuration_file(
+    client: AgentClient,
+    path: &Path,
+    content: &[u8],
+) -> Result<(), String> {
+    if client == AgentClient::DeepSeekHarness {
+        let owner_only = path.file_name().and_then(|name| name.to_str())
+            == Some(DEEPSEEK_HARNESS_CREDENTIALS_FILE);
+        write_deepseek_harness_file(path, content, owner_only)
+    } else {
+        write_bytes_directly(path, content)
+    }
+}
+
 pub(crate) fn build_claude_agent_config(
     existing: Option<&str>,
     base_url: &str,
@@ -967,9 +1173,105 @@ pub(crate) fn remove_agent_managed_configuration(
         AgentClient::OpenCode => remove_opencode_managed_configuration(paths),
         AgentClient::OpenClaw => remove_openclaw_managed_configuration(paths),
         AgentClient::Hermes => remove_hermes_managed_configuration(paths),
+        AgentClient::DeepSeekHarness => remove_deepseek_harness_managed_configuration(paths),
     }
 }
 
+pub(crate) fn remove_deepseek_harness_settings_fields(root: &mut serde_norway::Mapping) -> bool {
+    let mut changed = false;
+    let mut remove_llm = false;
+    if let Some(llm) = root
+        .get_mut(yaml_key("llm-pi-ai"))
+        .and_then(serde_norway::Value::as_mapping_mut)
+    {
+        let mut remove_providers = false;
+        if let Some(providers) = llm
+            .get_mut(yaml_key("providers"))
+            .and_then(serde_norway::Value::as_mapping_mut)
+        {
+            changed |= providers
+                .remove(yaml_key(DEEPSEEK_HARNESS_PROVIDER_ID))
+                .is_some();
+            remove_providers = providers.is_empty();
+        }
+        if remove_providers {
+            llm.remove(yaml_key("providers"));
+        }
+        remove_llm = llm.is_empty();
+    }
+    if remove_llm {
+        root.remove(yaml_key("llm-pi-ai"));
+    }
+    let managed_selection = root
+        .get(yaml_key("agent-default-model"))
+        .and_then(serde_norway::Value::as_mapping)
+        .and_then(|selection| yaml_mapping_value(selection, "provider"))
+        .and_then(serde_norway::Value::as_str)
+        == Some(DEEPSEEK_HARNESS_PROVIDER_ID);
+    if managed_selection {
+        root.remove(yaml_key("agent-default-model"));
+        changed = true;
+    }
+    changed
+}
+
+pub(crate) fn remove_deepseek_harness_managed_configuration(
+    paths: &[PathBuf],
+) -> Result<Vec<String>, String> {
+    if paths.len() != 2 {
+        return Err("DeepSeek Harness 配置路径数量无效".to_string());
+    }
+    let mut changed_paths = Vec::new();
+    if paths[0].is_file() {
+        let current = fs::read_to_string(&paths[0])
+            .map_err(|error| format!("读取 DeepSeek Harness settings 失败: {error}"))?;
+        let mut changed = false;
+        let rendered = render_agent_yaml_mapping_update(
+            Some(&current),
+            "DeepSeek Harness settings",
+            |root| {
+                changed = remove_deepseek_harness_settings_fields(root);
+                Ok(())
+            },
+        )?;
+        if changed {
+            let root = parse_agent_yaml_mapping(Some(&rendered), "DeepSeek Harness settings")?;
+            if root.is_empty() {
+                fs::remove_file(&paths[0])
+                    .map_err(|error| format!("删除空的 DeepSeek Harness settings 失败: {error}"))?;
+            } else {
+                write_bytes_directly(&paths[0], rendered.as_bytes())?;
+            }
+            changed_paths.push(path_to_string(&paths[0]));
+        }
+    }
+    if paths[1].is_file() {
+        let current = fs::read_to_string(&paths[1])
+            .map_err(|error| format!("读取 DeepSeek Harness credentials 失败: {error}"))?;
+        let mut changed = false;
+        let rendered = render_agent_yaml_mapping_update(
+            Some(&current),
+            "DeepSeek Harness credentials",
+            |root| {
+                changed = root.remove(yaml_key(DEEPSEEK_HARNESS_CREDENTIAL)).is_some();
+                Ok(())
+            },
+        )?;
+        if changed {
+            let root = parse_agent_yaml_mapping(Some(&rendered), "DeepSeek Harness credentials")?;
+            if root.is_empty() {
+                fs::remove_file(&paths[1]).map_err(|error| {
+                    format!("删除空的 DeepSeek Harness credentials 失败: {error}")
+                })?;
+            } else {
+                write_deepseek_harness_file(&paths[1], rendered.as_bytes(), true)?;
+            }
+            changed_paths.push(path_to_string(&paths[1]));
+        }
+    }
+    Ok(changed_paths)
+}
+
 pub(crate) fn restore_json_key(
     current: &mut serde_json::Map<String, serde_json::Value>,
     original: Option<&serde_json::Map<String, serde_json::Value>>,
@@ -1442,6 +1744,93 @@ pub(crate) fn build_restored_hermes_config(
     render_updated_core_yaml(&mut document, updated).map(Some)
 }
 
+pub(crate) fn restore_deepseek_harness_provider(
+    current: &mut serde_norway::Mapping,
+    original: Option<&serde_norway::Mapping>,
+) -> Result<(), String> {
+    let original_llm = original
+        .and_then(|root| yaml_mapping_value(root, "llm-pi-ai"))
+        .and_then(serde_norway::Value::as_mapping);
+    let original_providers = original_llm
+        .and_then(|llm| yaml_mapping_value(llm, "providers"))
+        .and_then(serde_norway::Value::as_mapping);
+    let original_provider = original_providers
+        .and_then(|providers| yaml_mapping_value(providers, DEEPSEEK_HARNESS_PROVIDER_ID))
+        .cloned();
+
+    if let Some(original_provider) = original_provider {
+        let llm = current
+            .entry(yaml_key("llm-pi-ai"))
+            .or_insert_with(|| serde_norway::Value::Mapping(serde_norway::Mapping::new()))
+            .as_mapping_mut()
+            .ok_or_else(|| "当前 DeepSeek Harness llm-pi-ai 必须是映射".to_string())?;
+        let providers = llm
+            .entry(yaml_key("providers"))
+            .or_insert_with(|| serde_norway::Value::Mapping(serde_norway::Mapping::new()))
+            .as_mapping_mut()
+            .ok_or_else(|| "当前 DeepSeek Harness llm-pi-ai.providers 必须是映射".to_string())?;
+        providers.insert(yaml_key(DEEPSEEK_HARNESS_PROVIDER_ID), original_provider);
+    } else {
+        let mut remove_llm = false;
+        if let Some(llm) = current
+            .get_mut(yaml_key("llm-pi-ai"))
+            .and_then(serde_norway::Value::as_mapping_mut)
+        {
+            let mut remove_providers = false;
+            if let Some(providers) = llm
+                .get_mut(yaml_key("providers"))
+                .and_then(serde_norway::Value::as_mapping_mut)
+            {
+                providers.remove(yaml_key(DEEPSEEK_HARNESS_PROVIDER_ID));
+                remove_providers = providers.is_empty() && original_providers.is_none();
+            }
+            if remove_providers {
+                llm.remove(yaml_key("providers"));
+            }
+            remove_llm = llm.is_empty() && original_llm.is_none();
+        }
+        if remove_llm {
+            current.remove(yaml_key("llm-pi-ai"));
+        }
+    }
+    Ok(())
+}
+
+pub(crate) fn build_restored_deepseek_harness_settings(
+    current: &str,
+    original: Option<&str>,
+) -> Result<Option<String>, String> {
+    let original_root = parse_agent_yaml_mapping(original, "原始 DeepSeek Harness settings")?;
+    let rendered = render_agent_yaml_mapping_update(
+        Some(current),
+        "当前 DeepSeek Harness settings",
+        |root| {
+            restore_deepseek_harness_provider(root, Some(&original_root))?;
+            restore_yaml_key(root, Some(&original_root), "agent-default-model");
+            Ok(())
+        },
+    )?;
+    let root = parse_agent_yaml_mapping(Some(&rendered), "恢复后的 DeepSeek Harness settings")?;
+    Ok((!root.is_empty() || original.is_some()).then_some(rendered))
+}
+
+pub(crate) fn build_restored_deepseek_harness_credentials(
+    current: &str,
+    original: Option<&str>,
+) -> Result<Option<String>, String> {
+    let original_root = parse_agent_yaml_mapping(original, "原始 DeepSeek Harness credentials")?;
+    let rendered = render_agent_yaml_mapping_update(
+        Some(current),
+        "当前 DeepSeek Harness credentials",
+        |root| {
+            restore_yaml_key(root, Some(&original_root), DEEPSEEK_HARNESS_CREDENTIAL);
+            Ok(())
+        },
+    )?;
+    let root = parse_agent_yaml_mapping(Some(&rendered), "恢复后的 DeepSeek Harness credentials")?;
+    Ok((!root.is_empty() || original.is_some()).then_some(rendered))
+}
+
 pub(crate) fn agent_config_semantically_equal(
     client: AgentClient,
     actual: &str,
@@ -1460,6 +1849,10 @@ pub(crate) fn agent_config_semantically_equal(
             serde_norway::from_str::<serde_norway::Value>(actual).ok()
                 == serde_norway::from_str::<serde_norway::Value>(expected).ok()
         }
+        AgentClient::DeepSeekHarness => {
+            serde_norway::from_str::<serde_norway::Value>(actual).ok()
+                == serde_norway::from_str::<serde_norway::Value>(expected).ok()
+        }
         _ => {
             serde_json::from_str::<serde_json::Value>(actual).ok()
                 == serde_json::from_str::<serde_json::Value>(expected).ok()
@@ -1502,6 +1895,17 @@ pub(crate) fn build_agent_session_restored_bytes(
         AgentClient::OpenCode => build_restored_opencode_config(current, original)?,
         AgentClient::OpenClaw => build_restored_openclaw_config(current, original)?,
         AgentClient::Hermes => build_restored_hermes_config(current, original)?,
+        AgentClient::DeepSeekHarness => {
+            let index = paths
+                .iter()
+                .position(|candidate| candidate == path)
+                .ok_or_else(|| "DeepSeek Harness 恢复路径不匹配".to_string())?;
+            match index {
+                0 => build_restored_deepseek_harness_settings(current, original)?,
+                1 => build_restored_deepseek_harness_credentials(current, original)?,
+                _ => return Err("DeepSeek Harness 恢复路径索引无效".to_string()),
+            }
+        }
     };
     if let (Some(restored), Some(original), Some(original_bytes)) =
         (restored.as_deref(), original, original_bytes)
diff --git a/src-tauri/src/agents/discovery.rs b/src-tauri/src/agents/discovery.rs
index b3e3af2..2d9023f 100644
--- a/src-tauri/src/agents/discovery.rs
+++ b/src-tauri/src/agents/discovery.rs
@@ -25,9 +25,44 @@ pub(crate) fn agent_config_paths(client: AgentClient, home: &Path) -> Vec<PathBu
         AgentClient::OpenCode => vec![home.join(".config/opencode/opencode.json")],
         AgentClient::OpenClaw => vec![home.join(".openclaw/openclaw.json")],
         AgentClient::Hermes => vec![hermes_agent_config_path(home)],
+        AgentClient::DeepSeekHarness => {
+            let directory = deepseek_harness_home(home);
+            vec![
+                directory.join(DEEPSEEK_HARNESS_SETTINGS_FILE),
+                directory.join(DEEPSEEK_HARNESS_CREDENTIALS_FILE),
+            ]
+        }
     }
 }
 
+pub(crate) fn deepseek_harness_home(home: &Path) -> PathBuf {
+    env::var_os("DSH_HOME")
+        .map(PathBuf::from)
+        .filter(|path| !path.as_os_str().is_empty())
+        .unwrap_or_else(|| home.join(".dsh"))
+}
+
+pub(crate) fn read_deepseek_harness_profile_version(home: &Path) -> Option<String> {
+    let directory = deepseek_harness_home(home);
+    [
+        directory.join("profiles/node_modules/@deepseek-ai/dsh/package.json"),
+        directory.join("node_modules/@deepseek-ai/dsh/package.json"),
+    ]
+    .into_iter()
+    .find_map(|path| read_package_json_version(&path))
+}
+
+pub(crate) fn read_package_json_version(path: &Path) -> Option<String> {
+    let content = fs::read_to_string(path).ok()?;
+    let package = serde_json::from_str::<serde_json::Value>(&content).ok()?;
+    package
+        .get("version")
+        .and_then(serde_json::Value::as_str)
+        .map(str::trim)
+        .filter(|version| !version.is_empty())
+        .map(str::to_string)
+}
+
 pub(crate) fn pi_agent_directory(home: &Path) -> PathBuf {
     env::var_os("PI_CODING_AGENT_DIR")
         .map(PathBuf::from)
@@ -765,6 +800,7 @@ pub(crate) fn inspect_agent_config(
     let app_version = match client {
         AgentClient::ClaudeDesktop => read_claude_desktop_version(home),
         AgentClient::Codex => read_codex_app_version(home),
+        AgentClient::DeepSeekHarness => read_deepseek_harness_profile_version(home),
         _ => None,
     };
     let version = cli_version.clone().or_else(|| app_version.clone());
@@ -902,6 +938,8 @@ pub(crate) fn inspect_agent_managed_config(
             .map(|(configured, model)| (configured, model, false)),
         AgentClient::Hermes => inspect_hermes_agent_config(&paths[0], port, api_key)
             .map(|(configured, model)| (configured, model, false)),
+        AgentClient::DeepSeekHarness => inspect_deepseek_harness_config(paths, port, api_key)
+            .map(|(configured, model)| (configured, model, false)),
     }
 }
 
@@ -1020,6 +1058,7 @@ pub(crate) fn agent_has_managed_marker(
                 == Some(MANAGED_AGENT_PROVIDER_ID);
             Ok(provider_exists && model_selected)
         }
+        AgentClient::DeepSeekHarness => deepseek_harness_has_managed_marker(paths),
     }
 }
 
@@ -2277,3 +2316,91 @@ pub(crate) fn inspect_hermes_agent_config(
         .map(str::to_string);
     Ok((configured, model))
 }
+
+pub(crate) fn inspect_deepseek_harness_config(
+    paths: &[PathBuf],
+    port: u16,
+    api_key: &str,
+) -> Result<(bool, Option<String>), String> {
+    if paths.len() != 2 {
+        return Err("DeepSeek Harness 配置路径数量无效".to_string());
+    }
+    let settings = read_agent_yaml_mapping_or_empty(&paths[0], "DeepSeek Harness settings")?;
+    let credentials = read_agent_yaml_mapping_or_empty(&paths[1], "DeepSeek Harness credentials")?;
+    let provider = yaml_mapping_value(&settings, "llm-pi-ai")
+        .and_then(serde_norway::Value::as_mapping)
+        .and_then(|section| yaml_mapping_value(section, "providers"))
+        .and_then(serde_norway::Value::as_mapping)
+        .and_then(|providers| yaml_mapping_value(providers, DEEPSEEK_HARNESS_PROVIDER_ID))
+        .and_then(serde_norway::Value::as_mapping);
+    let selection = yaml_mapping_value(&settings, "agent-default-model")
+        .and_then(serde_norway::Value::as_mapping);
+    let selected_provider = selection
+        .and_then(|selection| yaml_mapping_value(selection, "provider"))
+        .and_then(serde_norway::Value::as_str);
+    let model = (selected_provider == Some(DEEPSEEK_HARNESS_PROVIDER_ID))
+        .then(|| {
+            selection
+                .and_then(|selection| yaml_mapping_value(selection, "model"))
+                .and_then(serde_norway::Value::as_str)
+                .map(str::trim)
+                .filter(|model| !model.is_empty())
+                .map(str::to_string)
+        })
+        .flatten();
+    let expected_base = format!("http://127.0.0.1:{port}/v1");
+    let credential = yaml_mapping_value(&credentials, DEEPSEEK_HARNESS_CREDENTIAL)
+        .and_then(serde_norway::Value::as_str);
+    let model_is_published = model.as_deref().is_some_and(|selected| {
+        provider
+            .and_then(|provider| yaml_mapping_value(provider, "models"))
+            .and_then(serde_norway::Value::as_sequence)
+            .is_some_and(|models| {
+                models.iter().any(|model| {
+                    model
+                        .as_mapping()
+                        .and_then(|model| yaml_mapping_value(model, "id"))
+                        .and_then(serde_norway::Value::as_str)
+                        .is_some_and(|id| id.eq_ignore_ascii_case(selected))
+                })
+            })
+    });
+    let configured = provider
+        .and_then(|provider| yaml_mapping_value(provider, "apiKeyEnv"))
+        .and_then(serde_norway::Value::as_str)
+        == Some(DEEPSEEK_HARNESS_CREDENTIAL)
+        && provider
+            .and_then(|provider| yaml_mapping_value(provider, "api"))
+            .and_then(serde_norway::Value::as_str)
+            == Some("openai-completions")
+        && provider
+            .and_then(|provider| yaml_mapping_value(provider, "baseURL"))
+            .and_then(serde_norway::Value::as_str)
+            == Some(expected_base.as_str())
+        && selected_provider == Some(DEEPSEEK_HARNESS_PROVIDER_ID)
+        && model_is_published
+        && credential == Some(api_key);
+    Ok((configured, model))
+}
+
+pub(crate) fn deepseek_harness_has_managed_marker(paths: &[PathBuf]) -> Result<bool, String> {
+    if paths.len() != 2 {
+        return Err("DeepSeek Harness 配置路径数量无效".to_string());
+    }
+    let settings = read_agent_yaml_mapping_or_empty(&paths[0], "DeepSeek Harness settings")?;
+    let credentials = read_agent_yaml_mapping_or_empty(&paths[1], "DeepSeek Harness credentials")?;
+    let provider_exists = yaml_mapping_value(&settings, "llm-pi-ai")
+        .and_then(serde_norway::Value::as_mapping)
+        .and_then(|section| yaml_mapping_value(section, "providers"))
+        .and_then(serde_norway::Value::as_mapping)
+        .is_some_and(|providers| {
+            yaml_mapping_value(providers, DEEPSEEK_HARNESS_PROVIDER_ID).is_some()
+        });
+    let default_selected = yaml_mapping_value(&settings, "agent-default-model")
+        .and_then(serde_norway::Value::as_mapping)
+        .and_then(|selection| yaml_mapping_value(selection, "provider"))
+        .and_then(serde_norway::Value::as_str)
+        == Some(DEEPSEEK_HARNESS_PROVIDER_ID);
+    let credential_exists = yaml_mapping_value(&credentials, DEEPSEEK_HARNESS_CREDENTIAL).is_some();
+    Ok(provider_exists || default_selected || credential_exists)
+}
diff --git a/src-tauri/src/agents/state.rs b/src-tauri/src/agents/state.rs
index c25418b..6c613fa 100644
--- a/src-tauri/src/agents/state.rs
+++ b/src-tauri/src/agents/state.rs
@@ -724,6 +724,10 @@ pub(crate) fn fresh_agent_contents_with_oauth(
             model,
             models,
         )?]),
+        AgentClient::DeepSeekHarness => Ok(vec![
+            build_deepseek_harness_settings(None, &openai_base, model, models)?,
+            build_deepseek_harness_credentials(None, api_key)?,
+        ]),
     }
 }
 
@@ -742,6 +746,10 @@ pub(crate) fn agent_contents_equal(client: AgentClient, actual: &str, expected:
             serde_yaml::from_str::<serde_yaml::Value>(actual).ok()
                 == serde_yaml::from_str::<serde_yaml::Value>(expected).ok()
         }
+        AgentClient::DeepSeekHarness => {
+            serde_norway::from_str::<serde_norway::Value>(actual).ok()
+                == serde_norway::from_str::<serde_norway::Value>(expected).ok()
+        }
         _ => {
             serde_json::from_str::<serde_json::Value>(actual).ok()
                 == serde_json::from_str::<serde_json::Value>(expected).ok()
@@ -1187,15 +1195,23 @@ pub(crate) fn dated_agent_backup_path(path: &Path) -> Result<PathBuf, String> {
 }
 
 pub(crate) fn prepare_agent_session_backups(
+    client: AgentClient,
     updates: &[AgentFileUpdate],
 ) -> Result<Vec<AgentAppliedBackupFile>, String> {
-    let mut backups = Vec::with_capacity(updates.len());
+    let mut backups: Vec<AgentAppliedBackupFile> = Vec::with_capacity(updates.len());
     let mut renamed = Vec::new();
     for update in updates {
         let existed_before = update.path.is_file();
         let backup_path = dated_agent_backup_path(&update.path)?;
         if existed_before {
             if backup_path.exists() {
+                if client == AgentClient::DeepSeekHarness {
+                    for backup in &backups {
+                        if backup.existed_before {
+                            let _ = fs::remove_file(&backup.backup_path);
+                        }
+                    }
+                }
                 for (path, backup) in renamed.iter().rev() {
                     let _ = fs::rename(backup, path);
                 }
@@ -1204,13 +1220,27 @@ pub(crate) fn prepare_agent_session_backups(
                     path_to_string(&backup_path)
                 ));
             }
-            fs::rename(&update.path, &backup_path).map_err(|error| {
-                format!(
-                    "重命名原智能体配置为备份失败 {}: {error}",
-                    path_to_string(&update.path)
-                )
-            })?;
-            renamed.push((update.path.clone(), backup_path.clone()));
+            if client == AgentClient::DeepSeekHarness {
+                if let Err(error) = fs::copy(&update.path, &backup_path) {
+                    for backup in &backups {
+                        if backup.existed_before {
+                            let _ = fs::remove_file(&backup.backup_path);
+                        }
+                    }
+                    return Err(format!(
+                        "备份 DeepSeek Harness 配置失败 {}: {error}",
+                        path_to_string(&update.path)
+                    ));
+                }
+            } else {
+                fs::rename(&update.path, &backup_path).map_err(|error| {
+                    format!(
+                        "重命名原智能体配置为备份失败 {}: {error}",
+                        path_to_string(&update.path)
+                    )
+                })?;
+                renamed.push((update.path.clone(), backup_path.clone()));
+            }
         }
         backups.push(AgentAppliedBackupFile {
             path: update.path.clone(),
@@ -1284,7 +1314,7 @@ pub(crate) fn restore_agent_applied_state_configuration(
         let restore_result = (|| -> Result<(), String> {
             for (file, replacement) in state.backup_files.iter().zip(&replacements).rev() {
                 if let Some(replacement) = replacement {
-                    write_bytes_directly(&file.path, replacement)?;
+                    write_agent_configuration_file(client, &file.path, replacement)?;
                 } else if file.path.exists() {
                     fs::remove_file(&file.path).map_err(|error| {
                         format!(
@@ -1327,12 +1357,13 @@ pub(crate) fn restore_agent_applied_state_configuration(
     Ok(())
 }
 
-pub(crate) fn agent_clients_restored_on_exit() -> [AgentClient; 4] {
+pub(crate) fn agent_clients_restored_on_exit() -> [AgentClient; 5] {
     [
         AgentClient::Codex,
         AgentClient::OpenCode,
         AgentClient::OpenClaw,
         AgentClient::Hermes,
+        AgentClient::DeepSeekHarness,
     ]
 }
 
@@ -1382,7 +1413,7 @@ pub(crate) fn commit_agent_configuration(
         if let Some(state) = existing_state.filter(|state| !state.backup_files.is_empty()) {
             state.backup_files
         } else {
-            prepare_agent_session_backups(updates)?
+            prepare_agent_session_backups(client, updates)?
         };
 
     let transaction = (|| -> Result<Vec<String>, String> {
@@ -1392,7 +1423,7 @@ pub(crate) fn commit_agent_configuration(
             if read_agent_bytes(&update.path)?.as_deref() == Some(next) {
                 continue;
             }
-            write_bytes_directly(&update.path, next)?;
+            write_agent_configuration_file(client, &update.path, next)?;
             changed.push(path_to_string(&update.path));
         }
         let state = AgentAppliedState {
@@ -1546,6 +1577,30 @@ pub(crate) fn reset_agent_configuration_to_default_with_oauth(
         claude_code_model_mappings,
         claude_desktop_model_mappings,
     } = request;
+    if client == AgentClient::DeepSeekHarness {
+        let updates = build_agent_updates_with_oauth(
+            client,
+            home,
+            port,
+            api_key,
+            model,
+            AgentConfigurationOptions {
+                models,
+                codex_catalog,
+                oauth_configuration,
+                claude_code_model_mappings,
+                claude_desktop_model_mappings,
+            },
+        )?;
+        return commit_agent_configuration(
+            client,
+            home,
+            model,
+            &updates,
+            "default",
+            claude_desktop_model_mappings,
+        );
+    }
     let paths = agent_config_paths(client, home);
     let contents = fresh_agent_contents_with_oauth(
         client,
diff --git a/src-tauri/src/main.rs b/src-tauri/src/main.rs
index 900e587..79078e1 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -130,6 +130,10 @@ const DEFAULT_MAX_RETRY_INTERVAL: u32 = 30;
 const DEFAULT_STREAMING_BOOTSTRAP_RETRIES: u32 = 0;
 const LEGACY_DEFAULT_MANAGEMENT_SECRET_KEY: &str = "123456";
 const MANAGED_AGENT_PROVIDER_ID: &str = "cpa-gui";
+const DEEPSEEK_HARNESS_PROVIDER_ID: &str = "easy-cliproxyapi";
+const DEEPSEEK_HARNESS_CREDENTIAL: &str = "EASYCLIPROXYAPI_API_KEY";
+const DEEPSEEK_HARNESS_SETTINGS_FILE: &str = "settings.yaml";
+const DEEPSEEK_HARNESS_CREDENTIALS_FILE: &str = ".credentials.yaml";
 const PI_AGENT_ID: &str = "pi";
 const PI_AGENT_NAME: &str = "Pi";
 const PI_CLIPROXYAPI_PACKAGE: &str = "npm:@router-for-me/pi-cliproxyapi-provider";
@@ -967,6 +971,7 @@ enum AgentClient {
     OpenCode,
     OpenClaw,
     Hermes,
+    DeepSeekHarness,
 }
 
 #[derive(Clone, Debug)]
@@ -986,6 +991,7 @@ impl AgentClient {
             "opencode" => Ok(Self::OpenCode),
             "openclaw" => Ok(Self::OpenClaw),
             "hermes" => Ok(Self::Hermes),
+            "deepseek-harness" => Ok(Self::DeepSeekHarness),
             _ => Err(format!("不支持的智能体客户端: {value}")),
         }
     }
@@ -998,6 +1004,7 @@ impl AgentClient {
             Self::OpenCode => "opencode",
             Self::OpenClaw => "openclaw",
             Self::Hermes => "hermes",
+            Self::DeepSeekHarness => "deepseek-harness",
         }
     }
 
@@ -1009,6 +1016,7 @@ impl AgentClient {
             Self::OpenCode => "OpenCode",
             Self::OpenClaw => "OpenClaw",
             Self::Hermes => "Hermes Agent",
+            Self::DeepSeekHarness => "DeepSeek Harness",
         }
     }
 
@@ -1029,6 +1037,7 @@ impl AgentClient {
             Self::OpenCode => &["opencode"],
             Self::OpenClaw => &["openclaw"],
             Self::Hermes => &["hermes"],
+            Self::DeepSeekHarness => &["dsh"],
         }
     }
 }
diff --git a/src-tauri/src/tests/agent_configuration.rs b/src-tauri/src/tests/agent_configuration.rs
index 16ea01e..0b39fd8 100644
--- a/src-tauri/src/tests/agent_configuration.rs
+++ b/src-tauri/src/tests/agent_configuration.rs
@@ -781,6 +781,145 @@ fn exit_preserves_claude_client_configurations() {
     assert!(!restored.contains(&AgentClient::ClaudeDesktop));
     assert!(restored.contains(&AgentClient::Codex));
     assert!(restored.contains(&AgentClient::OpenCode));
+    assert!(restored.contains(&AgentClient::DeepSeekHarness));
+}
+
+#[test]
+fn deepseek_harness_settings_preserve_unrelated_sections_and_publish_models() {
+    let existing = r#"# keep this comment
+ui-onboarding:
+  welcomeNoticeVersion: 3
+llm-pi-ai:
+  providers:
+    existing:
+      api: openai-completions
+      baseURL: https://example.invalid/v1
+agent-default-model:
+  provider: existing
+  model: old-model
+  reasoningEffort: high
+"#;
+    let models = vec![
+        AgentModelOption {
+            name: "gpt-selected".to_string(),
+            alias: Some("Selected Model".to_string()),
+            is_alias: false,
+            context_window: Some(272_000),
+        },
+        AgentModelOption {
+            name: "gpt-other".to_string(),
+            alias: None,
+            is_alias: false,
+            context_window: None,
+        },
+    ];
+    let rendered = build_deepseek_harness_settings(
+        Some(existing),
+        "http://127.0.0.1:8317/v1",
+        "gpt-selected",
+        &models,
+    )
+    .unwrap();
+    let value: serde_norway::Value = serde_norway::from_str(&rendered).unwrap();
+
+    assert!(rendered.contains("# keep this comment"));
+    assert_eq!(
+        value["ui-onboarding"]["welcomeNoticeVersion"].as_u64(),
+        Some(3)
+    );
+    assert_eq!(
+        value["llm-pi-ai"]["providers"]["existing"]["baseURL"].as_str(),
+        Some("https://example.invalid/v1")
+    );
+    let provider = &value["llm-pi-ai"]["providers"][DEEPSEEK_HARNESS_PROVIDER_ID];
+    assert_eq!(
+        provider["apiKeyEnv"].as_str(),
+        Some(DEEPSEEK_HARNESS_CREDENTIAL)
+    );
+    assert_eq!(provider["api"].as_str(), Some("openai-completions"));
+    assert_eq!(
+        provider["baseURL"].as_str(),
+        Some("http://127.0.0.1:8317/v1")
+    );
+    assert_eq!(provider["models"][0]["id"].as_str(), Some("gpt-selected"));
+    assert_eq!(
+        provider["models"][0]["name"].as_str(),
+        Some("Selected Model")
+    );
+    assert_eq!(
+        provider["models"][0]["contextWindow"].as_u64(),
+        Some(272_000)
+    );
+    assert_eq!(provider["models"][1]["id"].as_str(), Some("gpt-other"));
+    assert_eq!(
+        value["agent-default-model"]["provider"].as_str(),
+        Some(DEEPSEEK_HARNESS_PROVIDER_ID)
+    );
+    assert_eq!(
+        value["agent-default-model"]["model"].as_str(),
+        Some("gpt-selected")
+    );
+    assert!(value["agent-default-model"]
+        .get("reasoningEffort")
+        .is_none());
+}
+
+#[test]
+fn deepseek_harness_credentials_preserve_other_entries() {
+    let rendered = build_deepseek_harness_credentials(
+        Some("# existing key\nOTHER_API_KEY: other-secret\n"),
+        "cpa-secret",
+    )
+    .unwrap();
+    let value: serde_norway::Value = serde_norway::from_str(&rendered).unwrap();
+
+    assert!(rendered.contains("# existing key"));
+    assert_eq!(value["OTHER_API_KEY"].as_str(), Some("other-secret"));
+    assert_eq!(
+        value[DEEPSEEK_HARNESS_CREDENTIAL].as_str(),
+        Some("cpa-secret")
+    );
+}
+
+#[test]
+fn deepseek_harness_inspection_requires_managed_route_selection_and_credential() {
+    let home = agent_test_home("deepseek-harness-inspection");
+    let paths = vec![home.join("settings.yaml"), home.join(".credentials.yaml")];
+    let models = test_agent_models(&["gpt-test"]);
+    fs::write(
+        &paths[0],
+        build_deepseek_harness_settings(None, "http://127.0.0.1:8317/v1", "gpt-test", &models)
+            .unwrap(),
+    )
+    .unwrap();
+    fs::write(
+        &paths[1],
+        build_deepseek_harness_credentials(None, "agent-key").unwrap(),
+    )
+    .unwrap();
+
+    let (configured, model) = inspect_deepseek_harness_config(&paths, 8317, "agent-key").unwrap();
+    assert!(configured);
+    assert_eq!(model.as_deref(), Some("gpt-test"));
+    assert!(deepseek_harness_has_managed_marker(&paths).unwrap());
+
+    let (wrong_key, _) = inspect_deepseek_harness_config(&paths, 8317, "different-key").unwrap();
+    assert!(!wrong_key);
+    fs::remove_dir_all(home).unwrap();
+}
+
+#[test]
+fn deepseek_harness_profile_version_comes_from_installed_profile() {
+    let home = agent_test_home("deepseek-harness-version");
+    let package = home.join(".dsh/profiles/node_modules/@deepseek-ai/dsh/package.json");
+    fs::create_dir_all(package.parent().unwrap()).unwrap();
+    fs::write(&package, r#"{"version":"0.1.0-rc.5"}"#).unwrap();
+
+    assert_eq!(
+        read_deepseek_harness_profile_version(&home).as_deref(),
+        Some("0.1.0-rc.5")
+    );
+    fs::remove_dir_all(home).unwrap();
 }
 
 #[test]
diff --git a/src-tauri/src/tests/agent_state.rs b/src-tauri/src/tests/agent_state.rs
index 122824d..d11c1aa 100644
--- a/src-tauri/src/tests/agent_state.rs
+++ b/src-tauri/src/tests/agent_state.rs
@@ -204,6 +204,85 @@ fn agent_configuration_is_restored_from_the_dated_session_backup_on_exit() {
     fs::remove_dir_all(home).unwrap();
 }
 
+#[test]
+fn deepseek_harness_session_restore_keeps_concurrent_unmanaged_yaml_changes() {
+    let home = agent_test_home("deepseek-harness-session-restore");
+    let paths = agent_config_paths(AgentClient::DeepSeekHarness, &home);
+    fs::create_dir_all(paths[0].parent().unwrap()).unwrap();
+    let original_settings = r#"# original settings
+llm-pi-ai:
+  providers:
+    existing:
+      api: openai-completions
+      baseURL: https://example.invalid/v1
+agent-default-model:
+  provider: existing
+  model: old-model
+"#;
+    let original_credentials = "OTHER_API_KEY: old-secret\n";
+    fs::write(&paths[0], original_settings).unwrap();
+    fs::write(&paths[1], original_credentials).unwrap();
+    let models = test_agent_models(&["gpt-test", "gpt-other"]);
+
+    apply_agent_configuration(
+        AgentClient::DeepSeekHarness,
+        &home,
+        8317,
+        "agent-key",
+        "gpt-test",
+        &models,
+        None,
+    )
+    .unwrap();
+    let (configured, model) = inspect_deepseek_harness_config(&paths, 8317, "agent-key").unwrap();
+    assert!(configured);
+    assert_eq!(model.as_deref(), Some("gpt-test"));
+
+    let settings = fs::read_to_string(&paths[0]).unwrap();
+    let settings =
+        render_agent_yaml_mapping_update(Some(&settings), "test Harness settings", |root| {
+            root.insert(
+                yaml_key("added-after-apply"),
+                serde_norway::Value::Bool(true),
+            );
+            Ok(())
+        })
+        .unwrap();
+    fs::write(&paths[0], settings).unwrap();
+    let credentials = fs::read_to_string(&paths[1]).unwrap();
+    let credentials =
+        render_agent_yaml_mapping_update(Some(&credentials), "test Harness credentials", |root| {
+            root.insert(
+                yaml_key("NEW_API_KEY"),
+                serde_norway::Value::String("new-secret".to_string()),
+            );
+            Ok(())
+        })
+        .unwrap();
+    fs::write(&paths[1], credentials).unwrap();
+
+    restore_agent_session_configuration(AgentClient::DeepSeekHarness, &home).unwrap();
+    let settings: serde_norway::Value =
+        serde_norway::from_str(&fs::read_to_string(&paths[0]).unwrap()).unwrap();
+    let credentials: serde_norway::Value =
+        serde_norway::from_str(&fs::read_to_string(&paths[1]).unwrap()).unwrap();
+    assert_eq!(
+        settings["agent-default-model"]["provider"].as_str(),
+        Some("existing")
+    );
+    assert!(settings["llm-pi-ai"]["providers"]
+        .get(DEEPSEEK_HARNESS_PROVIDER_ID)
+        .is_none());
+    assert_eq!(settings["added-after-apply"].as_bool(), Some(true));
+    assert_eq!(credentials["OTHER_API_KEY"].as_str(), Some("old-secret"));
+    assert_eq!(credentials["NEW_API_KEY"].as_str(), Some("new-secret"));
+    assert!(credentials.get(DEEPSEEK_HARNESS_CREDENTIAL).is_none());
+    assert!(!dated_agent_backup_path(&paths[0]).unwrap().exists());
+    assert!(!dated_agent_backup_path(&paths[1]).unwrap().exists());
+    assert!(!agent_state_path(&paths).unwrap().exists());
+    fs::remove_dir_all(home).unwrap();
+}
+
 #[test]
 fn opencode_runtime_edits_survive_close_and_next_apply_owns_conflicts() {
     let home = agent_test_home("opencode-runtime-edit-merge");
diff --git a/src/i18n/ja.ts b/src/i18n/ja.ts
index 17a03c7..e3c0f66 100644
--- a/src/i18n/ja.ts
+++ b/src/i18n/ja.ts
@@ -465,6 +465,7 @@ export const jaOverrides = {
   'agents.description.opencode': 'CPA OpenAI Compatible プロバイダーを使用',
   'agents.description.openclaw': 'CPA モデルプロバイダーと既定モデルを使用',
   'agents.description.hermes': 'CPA カスタムプロバイダーを使用',
+  'agents.description.deepseekHarness': 'Harness のネイティブ DeepSeek 設定と分離された OpenAI 互換ルートで CPA を使用',
   'agents.description.pi': 'CLIProxyAPI プロバイダーを使用して Pi CLI のモデルを動的に読み込みます',
   'agents.list.detecting': '検出中',
   'agents.list.unsupported': '現在のプラットフォームでは非対応',
diff --git a/src/i18n/locales/en.ts b/src/i18n/locales/en.ts
index 0aa5544..067af82 100644
--- a/src/i18n/locales/en.ts
+++ b/src/i18n/locales/en.ts
@@ -465,6 +465,7 @@ export const en: Record<MessageKey, string> = {
   'agents.description.opencode': 'Uses the CPA OpenAI-compatible provider',
   'agents.description.openclaw': 'Uses the CPA model provider and default model',
   'agents.description.hermes': 'Uses the CPA custom provider',
+  'agents.description.deepseekHarness': 'Uses CPA through an isolated, OpenAI-compatible Harness route',
   'agents.description.pi': 'Loads models dynamically in Pi through the CLIProxyAPI provider',
   'agents.list.detecting': 'Detecting',
   'agents.list.unsupported': 'Unsupported on this platform',
diff --git a/src/i18n/locales/zh-CN.ts b/src/i18n/locales/zh-CN.ts
index e0e9c6c..89e90d8 100644
--- a/src/i18n/locales/zh-CN.ts
+++ b/src/i18n/locales/zh-CN.ts
@@ -463,6 +463,7 @@ export const zhCN = {
   'agents.description.opencode': '使用 CPA OpenAI Compatible provider',
   'agents.description.openclaw': '使用 CPA 模型供应商和默认模型',
   'agents.description.hermes': '使用 CPA custom provider',
+  'agents.description.deepseekHarness': '通过通用 OpenAI 兼容路由使用 CPA，并与 Harness 原生 DeepSeek 配置隔离',
   'agents.description.pi': '使用 Pi CLI 和 CLIProxyAPI provider 动态加载模型',
   'agents.list.detecting': '正在检测',
   'agents.list.unsupported': '当前平台不支持',
diff --git a/src/pages/AgentsPage.tsx b/src/pages/AgentsPage.tsx
index ef7f5a9..d76b90a 100644
--- a/src/pages/AgentsPage.tsx
+++ b/src/pages/AgentsPage.tsx
@@ -25,6 +25,7 @@ import {
 } from 'lucide-react';
 import claudeIcon from '../assets/icons/claude.svg';
 import codexIcon from '../assets/icons/codex.svg';
+import deepseekIcon from '../assets/icons/deepseek.svg';
 import hermesIcon from '../assets/icons/hermes.png';
 import openclawIcon from '../assets/icons/openclaw.svg';
 import opencodeIcon from '../assets/icons/opencode.svg';
@@ -54,6 +55,7 @@ type AgentClientId =
   | 'opencode'
   | 'openclaw'
   | 'hermes'
+  | 'deepseek-harness'
   | 'pi';
 
 type ClaudeModelMappingClientId = 'claude-code' | 'claude-desktop';
@@ -168,7 +170,7 @@ type AgentDefinition = {
   name: string;
   icon?: string;
   Icon?: ComponentType<{ size?: number; 'aria-hidden'?: boolean }>;
-  descriptionKey: 'agents.description.claudeCode' | 'agents.description.claudeDesktop' | 'agents.description.codex' | 'agents.description.opencode' | 'agents.description.openclaw' | 'agents.description.hermes' | 'agents.description.pi';
+  descriptionKey: 'agents.description.claudeCode' | 'agents.description.claudeDesktop' | 'agents.description.codex' | 'agents.description.opencode' | 'agents.description.openclaw' | 'agents.description.hermes' | 'agents.description.deepseekHarness' | 'agents.description.pi';
 };
 
 type AgentSubpageId = 'core' | 'sessions';
@@ -216,6 +218,12 @@ const agentDefinitions: AgentDefinition[] = [
     icon: hermesIcon,
     descriptionKey: 'agents.description.hermes',
   },
+  {
+    id: 'deepseek-harness',
+    name: 'DeepSeek Harness',
+    icon: deepseekIcon,
+    descriptionKey: 'agents.description.deepseekHarness',
+  },
   {
     id: 'pi',
     name: 'Pi',
diff --git a/src/services/agentConfigurationDraft.ts b/src/services/agentConfigurationDraft.ts
index 18086a9..116f1d3 100644
--- a/src/services/agentConfigurationDraft.ts
+++ b/src/services/agentConfigurationDraft.ts
@@ -5,6 +5,7 @@ export type AgentConfigurationClientId =
   | 'opencode'
   | 'openclaw'
   | 'hermes'
+  | 'deepseek-harness'
   | 'pi';
 
 export type AgentConfigurationModificationState = 'unconfigured' | 'applied' | 'invalid';