diff --git a/sql/20260729_mcp_tool.sql b/sql/20260729_mcp_tool.sql
new file mode 100644
index 0000000..ebb0a69
--- /dev/null
+++ b/sql/20260729_mcp_tool.sql
@@ -0,0 +1,32 @@
+-- MCP 工具配置（启用/描述覆盖），与代码内置目录合并
+-- 对齐 t_system_other_config / t_order_file 等配置表结构习惯
+
+CREATE TABLE IF NOT EXISTS `t_mcp_tool` (
+  `Id` INT NOT NULL AUTO_INCREMENT COMMENT '主键，自增',
+  `ToolKey` VARCHAR(64) NOT NULL COMMENT '工具编码，如 oms.price_check',
+  `DisplayName` VARCHAR(128) NOT NULL COMMENT '显示名称',
+  `Description` VARCHAR(1000) NOT NULL COMMENT '给 AI 的工具描述',
+  `Enabled` TINYINT NOT NULL DEFAULT 1 COMMENT '是否启用：0-否，1-是',
+  `SortOrder` INT NOT NULL DEFAULT 0 COMMENT '排序，越小越靠前',
+  `Remark` VARCHAR(512) NULL COMMENT '备注',
+  `IsDeleted` TINYINT NOT NULL DEFAULT 0 COMMENT '软删除：0-否，1-是',
+  `ConcurrencyStamp` CHAR(36) NOT NULL DEFAULT (UUID()) COMMENT '并发戳',
+  `CreateUserId` INT NOT NULL DEFAULT 0 COMMENT '创建人',
+  `CreateTime` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  `UpdateUserId` INT NULL COMMENT '更新人',
+  `UpdateTime` DATETIME NULL COMMENT '更新时间',
+  PRIMARY KEY (`Id`),
+  UNIQUE KEY `uk_mcp_tool_key` (`ToolKey`),
+  KEY `idx_mcp_tool_enabled` (`Enabled`, `SortOrder`, `Id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='MCP 工具配置表';
+
+INSERT INTO `t_mcp_tool` (`ToolKey`, `DisplayName`, `Description`, `Enabled`, `SortOrder`, `Remark`)
+VALUES
+  ('oms.price_check', '查价格', '根据目的国、重量等查询运费报价，返回可用渠道与价格摘要。', 1, 10, '内置：封装 /order/price-check'),
+  ('oms.channel_guide', '查渠道对客说明', '按销售产品代码/名称查询对客说明（禁运、可寄品名等），判断客户品名是否可承运。', 1, 20, '内置：读销售产品 CustomerGuideMarkdown'),
+  ('oms.track_query', '查轨迹', '根据运单号/客户单号查询物流轨迹时间轴摘要。', 1, 30, '内置：轨迹中心 GetDetailTimeline')
+ON DUPLICATE KEY UPDATE
+  `DisplayName` = VALUES(`DisplayName`),
+  `Description` = VALUES(`Description`),
+  `SortOrder` = VALUES(`SortOrder`),
+  `Remark` = VALUES(`Remark`);
diff --git a/sql/20260729_mcp_tool_alter_align.sql b/sql/20260729_mcp_tool_alter_align.sql
new file mode 100644
index 0000000..501ee94
--- /dev/null
+++ b/sql/20260729_mcp_tool_alter_align.sql
@@ -0,0 +1,38 @@
+-- 若已按旧版建过 t_mcp_tool，执行本脚本补齐字段（幂等）
+
+ALTER TABLE `t_mcp_tool`
+  ADD COLUMN IF NOT EXISTS `Remark` VARCHAR(512) NULL COMMENT '备注' AFTER `SortOrder`;
+
+-- MySQL 8.0.12 前无 IF NOT EXISTS 时，可改用下面手工判断；8.0.29+ 支持 ADD COLUMN IF NOT EXISTS
+-- 并发戳：已存在则跳过
+SET @col_exists := (
+  SELECT COUNT(*) FROM information_schema.COLUMNS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 't_mcp_tool'
+    AND COLUMN_NAME = 'ConcurrencyStamp'
+);
+SET @sql := IF(
+  @col_exists = 0,
+  'ALTER TABLE `t_mcp_tool` ADD COLUMN `ConcurrencyStamp` CHAR(36) NOT NULL DEFAULT (UUID()) COMMENT ''并发戳'' AFTER `IsDeleted`',
+  'SELECT 1'
+);
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+SET @idx_exists := (
+  SELECT COUNT(*) FROM information_schema.STATISTICS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 't_mcp_tool'
+    AND INDEX_NAME = 'idx_mcp_tool_enabled'
+);
+SET @sql := IF(
+  @idx_exists = 0,
+  'ALTER TABLE `t_mcp_tool` ADD KEY `idx_mcp_tool_enabled` (`Enabled`, `SortOrder`, `Id`)',
+  'SELECT 1'
+);
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+ALTER TABLE `t_mcp_tool` COMMENT = 'MCP 工具配置表';
diff --git a/src/Oms.Application/Dtos/Mcp/McpDtos.cs b/src/Oms.Application/Dtos/Mcp/McpDtos.cs
new file mode 100644
index 0000000..a59d983
--- /dev/null
+++ b/src/Oms.Application/Dtos/Mcp/McpDtos.cs
@@ -0,0 +1,85 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace Oms.Application.Dtos.Mcp;
+
+public class McpToolOutput
+{
+    public int? Id { get; set; }
+    public string ToolKey { get; set; } = string.Empty;
+    public string DisplayName { get; set; } = string.Empty;
+    public string Description { get; set; } = string.Empty;
+    public bool Enabled { get; set; }
+    public int SortOrder { get; set; }
+    /// <summary>内置参数 JSON Schema（只读）</summary>
+    public string InputSchemaJson { get; set; } = string.Empty;
+    public bool Builtin { get; set; } = true;
+}
+
+public class McpToolSaveInput
+{
+    [Required]
+    public string ToolKey { get; set; } = string.Empty;
+
+    [Required]
+    public string DisplayName { get; set; } = string.Empty;
+
+    [Required]
+    public string Description { get; set; } = string.Empty;
+
+    public bool Enabled { get; set; } = true;
+
+    public int SortOrder { get; set; }
+}
+
+public class McpToolCallInput
+{
+    [Required]
+    public string ToolKey { get; set; } = string.Empty;
+
+    /// <summary>工具参数 JSON 对象字符串或字典序列化</summary>
+    public string ArgumentsJson { get; set; } = "{}";
+}
+
+public class McpToolCallOutput
+{
+    public string ToolKey { get; set; } = string.Empty;
+    public bool Success { get; set; }
+    public string Content { get; set; } = string.Empty;
+    public long ElapsedMs { get; set; }
+}
+
+public class AiAgentChatInput
+{
+    [Required]
+    public string ProviderKey { get; set; } = string.Empty;
+
+    public string? Model { get; set; }
+
+    [Required]
+    public List<AiAgentChatMessageInput> Messages { get; set; } = [];
+
+    /// <summary>为空则使用全部已启用工具</summary>
+    public List<string>? ToolKeys { get; set; }
+
+    public int MaxToolRounds { get; set; } = 3;
+}
+
+public class AiAgentChatMessageInput
+{
+    public string Role { get; set; } = "user";
+    public string Content { get; set; } = string.Empty;
+}
+
+public class AiAgentChatOutput
+{
+    public string Content { get; set; } = string.Empty;
+    public List<AiAgentToolTraceOutput> ToolTraces { get; set; } = [];
+}
+
+public class AiAgentToolTraceOutput
+{
+    public string ToolKey { get; set; } = string.Empty;
+    public string ArgumentsJson { get; set; } = string.Empty;
+    public string ResultPreview { get; set; } = string.Empty;
+    public bool Success { get; set; }
+}
diff --git a/src/Oms.Application/Mcp/AiAgentAbuseGuard.cs b/src/Oms.Application/Mcp/AiAgentAbuseGuard.cs
new file mode 100644
index 0000000..266dfcc
--- /dev/null
+++ b/src/Oms.Application/Mcp/AiAgentAbuseGuard.cs
@@ -0,0 +1,116 @@
+using Fake.Application;
+using Oms.Application.Helpers;
+
+namespace Oms.Application.Mcp;
+
+/// <summary>
+/// Agent 防滥用（Redis 计数，不落库日志）：按用户限制每分钟/每天调用次数与 LLM 轮次预算。
+/// </summary>
+public static class AiAgentAbuseGuard
+{
+    /// <summary>每用户每分钟最多 Agent 请求次数</summary>
+    public const int MaxRequestsPerMinute = 6;
+
+    /// <summary>每用户每天最多 Agent 请求次数</summary>
+    public const int MaxRequestsPerDay = 60;
+
+    /// <summary>每用户每天最多 LLM 调用次数（含工具轮次）</summary>
+    public const int MaxLlmCallsPerDay = 180;
+
+    /// <summary>单次请求最多工具轮次（含最终总结）</summary>
+    public const int MaxToolRoundsHardCap = 2;
+
+    /// <summary>单次请求最多执行工具次数</summary>
+    public const int MaxToolInvocationsPerRequest = 3;
+
+    /// <summary>单轮最多并行 tool_calls</summary>
+    public const int MaxToolCallsPerRound = 2;
+
+    /// <summary>送入模型的对话条数上限（不含 system）</summary>
+    public const int MaxHistoryMessages = 8;
+
+    /// <summary>单条消息字符上限</summary>
+    public const int MaxMessageChars = 1200;
+
+    /// <summary>工具结果写入上下文的字符上限</summary>
+    public const int MaxToolResultChars = 1000;
+
+    public static void EnsureAllowed(string principalKey)
+    {
+        var key = Normalize(principalKey);
+        TryIncr($"oms:ai:agent:rpm:{key}:{DateTime.UtcNow:yyyyMMddHHmm}", MaxRequestsPerMinute, 70,
+            $"提问过于频繁，请稍后再试（每分钟最多 {MaxRequestsPerMinute} 次）");
+        TryIncr($"oms:ai:agent:rpd:{key}:{DateTime.UtcNow:yyyyMMdd}", MaxRequestsPerDay, 86400,
+            $"今日提问次数已达上限（{MaxRequestsPerDay} 次），请明天再试或联系客服");
+    }
+
+    /// <summary>预扣 / 累计一次 LLM 调用；超限抛错。</summary>
+    public static void ConsumeLlmCall(string principalKey, int count = 1)
+    {
+        if (count <= 0) return;
+        var key = Normalize(principalKey);
+        var redisKey = $"oms:ai:agent:llm:{key}:{DateTime.UtcNow:yyyyMMdd}";
+        try
+        {
+            var client = RedisHelper.Client;
+            var next = client.IncrBy(redisKey, count);
+            if (next == count)
+            {
+                client.Expire(redisKey, 86400);
+            }
+
+            if (next > MaxLlmCallsPerDay)
+            {
+                throw new BusinessException(
+                    $"今日 AI 调用额度已用尽（约 {MaxLlmCallsPerDay} 次模型请求），请明天再试");
+            }
+        }
+        catch (BusinessException)
+        {
+            throw;
+        }
+        catch
+        {
+            // Redis 异常时不阻断，避免整站挂死；仍依赖轮次硬顶
+        }
+    }
+
+    private static void TryIncr(string redisKey, int max, int ttlSeconds, string denyMessage)
+    {
+        try
+        {
+            var client = RedisHelper.Client;
+            var next = client.Incr(redisKey);
+            if (next == 1)
+            {
+                client.Expire(redisKey, ttlSeconds);
+            }
+
+            if (next > max)
+            {
+                throw new BusinessException(denyMessage);
+            }
+        }
+        catch (BusinessException)
+        {
+            throw;
+        }
+        catch
+        {
+            // Redis 不可用时放行，靠硬顶控消耗
+        }
+    }
+
+    private static string Normalize(string principalKey)
+    {
+        var raw = string.IsNullOrWhiteSpace(principalKey) ? "anon" : principalKey.Trim();
+        return raw.Length > 64 ? raw[..64] : raw;
+    }
+
+    public static string Truncate(string? text, int maxChars)
+    {
+        var s = text ?? string.Empty;
+        if (s.Length <= maxChars) return s;
+        return s[..maxChars] + "…";
+    }
+}
diff --git a/src/Oms.Application/Mcp/McpToolCatalog.cs b/src/Oms.Application/Mcp/McpToolCatalog.cs
new file mode 100644
index 0000000..4ab874f
--- /dev/null
+++ b/src/Oms.Application/Mcp/McpToolCatalog.cs
@@ -0,0 +1,78 @@
+namespace Oms.Application.Mcp;
+
+public record McpToolDefinition(
+    string ToolKey,
+    string DisplayName,
+    string Description,
+    string InputSchemaJson,
+    int DefaultSortOrder);
+
+/// <summary>内置 MCP 工具目录（代码权威；库表可覆盖名称/描述/启用）。</summary>
+public static class McpToolCatalog
+{
+    public const string PriceCheck = "oms.price_check";
+    public const string ChannelGuide = "oms.channel_guide";
+    public const string TrackQuery = "oms.track_query";
+
+    public static IReadOnlyList<McpToolDefinition> All { get; } =
+    [
+        new(
+            PriceCheck,
+            "查价格",
+            "根据目的国、重量等查询运费报价，返回可用渠道与价格摘要。",
+            """
+            {
+              "type": "object",
+              "properties": {
+                "destinationCountry": { "type": "string", "description": "目的国家二字码，如 US、GB" },
+                "cargoWeight": { "type": "number", "description": "货物重量 kg" },
+                "length": { "type": "number", "description": "长 cm，可选" },
+                "width": { "type": "number", "description": "宽 cm，可选" },
+                "height": { "type": "number", "description": "高 cm，可选" },
+                "postalCode": { "type": "string", "description": "邮编，可选" },
+                "shippingMethod": { "type": "string", "description": "运输方式/产品代码关键词，可选" },
+                "cargoType": { "type": "string", "description": "货物属性编码，如 general/sensitive，可选" }
+              },
+              "required": ["destinationCountry", "cargoWeight"]
+            }
+            """,
+            10),
+        new(
+            ChannelGuide,
+            "查渠道对客说明",
+            "按销售产品代码或名称查询对客说明，判断客户品名是否可承运（禁运/可寄）。",
+            """
+            {
+              "type": "object",
+              "properties": {
+                "productCode": { "type": "string", "description": "销售产品代码，优先使用" },
+                "productName": { "type": "string", "description": "销售产品名称关键词（无代码时用）" },
+                "cargoName": { "type": "string", "description": "客户品名，用于对照说明判断可否承运" }
+              },
+              "required": ["cargoName"],
+              "anyOf": [
+                { "required": ["productCode"] },
+                { "required": ["productName"] }
+              ]
+            }
+            """,
+            20),
+        new(
+            TrackQuery,
+            "查轨迹",
+            "根据运单号或客户单号查询物流轨迹时间轴摘要。",
+            """
+            {
+              "type": "object",
+              "properties": {
+                "orderNumber": { "type": "string", "description": "运单号/跟踪号/客户单号" }
+              },
+              "required": ["orderNumber"]
+            }
+            """,
+            30)
+    ];
+
+    public static McpToolDefinition? Find(string toolKey) =>
+        All.FirstOrDefault(x => string.Equals(x.ToolKey, toolKey, StringComparison.OrdinalIgnoreCase));
+}
diff --git a/src/Oms.Application/Mcp/McpToolExecutor.cs b/src/Oms.Application/Mcp/McpToolExecutor.cs
new file mode 100644
index 0000000..c9fb27e
--- /dev/null
+++ b/src/Oms.Application/Mcp/McpToolExecutor.cs
@@ -0,0 +1,315 @@
+using System.Diagnostics;
+using System.Net.Http.Json;
+using System.Text.Json;
+using Fake.Application;
+using Fake.DependencyInjection;
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using Oms.Application.Dtos.Orders;
+using Oms.Application.Integrations.SmallBagTrack;
+using Oms.Application.Services.Orders;
+using Oms.Domain.ChannelsAggregate.Repositories;
+using Oms.Domain.Shared.Enums;
+
+namespace Oms.Application.Mcp;
+
+public interface IMcpToolExecutor
+{
+    Task<(bool Success, string Content)> InvokeAsync(
+        string toolKey,
+        string argumentsJson,
+        int? customerId = null,
+        CancellationToken cancellationToken = default);
+}
+
+public class McpToolExecutor(
+    IServiceProvider serviceProvider,
+    ISalesProductRepository salesProductRepository,
+    ISmallBagTrackConfigProvider trackConfigProvider,
+    IHttpClientFactory httpClientFactory,
+    IHttpContextAccessor httpContextAccessor,
+    ILogger<McpToolExecutor> logger) : IMcpToolExecutor, IScopedDependency
+{
+    public const string TrackHttpClientName = "McpTrackTimeline";
+
+    private static readonly JsonSerializerOptions JsonOptions = new()
+    {
+        PropertyNameCaseInsensitive = true,
+        PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+        WriteIndented = false
+    };
+
+    public async Task<(bool Success, string Content)> InvokeAsync(
+        string toolKey,
+        string argumentsJson,
+        int? customerId = null,
+        CancellationToken cancellationToken = default)
+    {
+        var sw = Stopwatch.StartNew();
+        try
+        {
+            var key = toolKey.Trim();
+            var result = key switch
+            {
+                McpToolCatalog.PriceCheck => await PriceCheckAsync(argumentsJson, customerId, cancellationToken),
+                McpToolCatalog.ChannelGuide => await ChannelGuideAsync(argumentsJson, cancellationToken),
+                McpToolCatalog.TrackQuery => await TrackQueryAsync(argumentsJson, cancellationToken),
+                _ => (false, $"未知工具：{toolKey}")
+            };
+            logger.LogInformation(
+                "MCP tool {Tool} finished in {Ms}ms success={Ok}",
+                key,
+                sw.ElapsedMilliseconds,
+                result.Item1);
+            return result;
+        }
+        catch (Exception ex)
+        {
+            logger.LogWarning(ex, "MCP tool {Tool} failed", toolKey);
+            return (false, $"工具执行失败：{ex.Message}");
+        }
+    }
+
+    private async Task<(bool, string)> PriceCheckAsync(
+        string argumentsJson,
+        int? customerId,
+        CancellationToken cancellationToken)
+    {
+        using var doc = JsonDocument.Parse(string.IsNullOrWhiteSpace(argumentsJson) ? "{}" : argumentsJson);
+        var root = doc.RootElement;
+        var country = GetString(root, "destinationCountry", "DestinationCountry");
+        if (string.IsNullOrWhiteSpace(country))
+        {
+            return (false, "缺少 destinationCountry（目的国家二字码）");
+        }
+
+        var weight = GetDecimal(root, "cargoWeight", "CargoWeight");
+        if (weight is null or <= 0)
+        {
+            return (false, "缺少有效的 cargoWeight（kg）");
+        }
+
+        var input = new OrderPriceCheckInput
+        {
+            DestinationCountry = country.Trim().ToUpperInvariant(),
+            CargoWeight = weight,
+            Length = GetDecimal(root, "length", "Length"),
+            Width = GetDecimal(root, "width", "Width"),
+            Height = GetDecimal(root, "height", "Height"),
+            PostalCode = GetString(root, "postalCode", "PostalCode"),
+            ShippingMethod = GetString(root, "shippingMethod", "ShippingMethod"),
+            CargoType = GetString(root, "cargoType", "CargoType"),
+            CustomerId = customerId
+        };
+
+        var orderService = serviceProvider.GetService(typeof(OrderService)) as OrderService
+            ?? throw new BusinessException("OrderService 未注册");
+        var result = await orderService.PriceCheckAsync(input);
+
+        var top = (result.Items ?? [])
+            .OrderBy(x => x.TotalCostNum > 0 ? x.TotalCostNum : x.TotalCost)
+            .Take(5)
+            .Select(x => new
+            {
+                productCode = x.ProductCode,
+                shippingMethod = x.ShippingMethod,
+                warehouse = x.Warehouse,
+                cargoType = x.CargoTypeName ?? x.CargoType,
+                totalCost = x.TotalCostNum > 0 ? x.TotalCostNum : x.TotalCost,
+                deliveryTime = x.DeliveryTime,
+                chargeableWeight = x.ChargeableWeight,
+                quoteLevel = x.QuoteLevel
+            })
+            .ToList();
+
+        var failures = (result.Failures ?? [])
+            .Take(5)
+            .Select(x => new { productCode = x.ProductCode, reason = x.Reason })
+            .ToList();
+
+        var payload = new
+        {
+            count = top.Count,
+            items = top,
+            failures,
+            queryHint = result.QueryHint == null
+                ? null
+                : new
+                {
+                    result.QueryHint.QuoteLevel,
+                    result.QueryHint.MissingFieldCodes,
+                    result.QueryHint.Disclaimers
+                }
+        };
+        return (true, JsonSerializer.Serialize(payload, JsonOptions));
+    }
+
+    private async Task<(bool, string)> ChannelGuideAsync(string argumentsJson, CancellationToken cancellationToken)
+    {
+        using var doc = JsonDocument.Parse(string.IsNullOrWhiteSpace(argumentsJson) ? "{}" : argumentsJson);
+        var root = doc.RootElement;
+        var productCode = GetString(root, "productCode", "ProductCode");
+        var productName = GetString(root, "productName", "ProductName");
+        var cargoName = GetString(root, "cargoName", "CargoName");
+
+        var products = new List<Oms.Domain.ChannelsAggregate.Entities.SalesProduct>();
+        if (!string.IsNullOrWhiteSpace(productCode))
+        {
+            var one = await salesProductRepository.GetByProductCodeAsync(productCode.Trim(), cancellationToken);
+            if (one != null) products.Add(one);
+        }
+
+        if (products.Count == 0 && !string.IsNullOrWhiteSpace(productName))
+        {
+            var keyword = productName.Trim();
+            var list = await salesProductRepository.GetListAsync(
+                x => x.IsActive == EnableStatus.Enabled
+                     && (x.ProductName.Contains(keyword) || x.ProductCode.Contains(keyword)));
+            products.AddRange(list.Take(5));
+        }
+
+        if (products.Count == 0)
+        {
+            return (false, "未找到销售产品，请提供 productCode 或 productName");
+        }
+
+        var items = products.Select(p =>
+        {
+            var guide = p.CustomerGuideMarkdown?.Trim() ?? string.Empty;
+            if (guide.Length > 1500) guide = guide[..1500] + "…";
+            return new
+            {
+                productCode = p.ProductCode,
+                productName = p.ProductName,
+                hasGuide = !string.IsNullOrWhiteSpace(guide),
+                customerGuideMarkdown = string.IsNullOrWhiteSpace(guide) ? null : guide,
+                cargoNameToCheck = string.IsNullOrWhiteSpace(cargoName) ? null : cargoName.Trim(),
+                hint = string.IsNullOrWhiteSpace(guide)
+                    ? "该产品尚未配置对客说明，无法据此判断品名可否承运。"
+                    : "请根据对客说明判断 cargoName 是否可寄；说明未提及的品名不要擅自判定可寄。"
+            };
+        }).ToList();
+
+        return (true, JsonSerializer.Serialize(new { items }, JsonOptions));
+    }
+
+    private async Task<(bool, string)> TrackQueryAsync(string argumentsJson, CancellationToken cancellationToken)
+    {
+        using var doc = JsonDocument.Parse(string.IsNullOrWhiteSpace(argumentsJson) ? "{}" : argumentsJson);
+        var orderNumber = GetString(doc.RootElement, "orderNumber", "OrderNumber", "serviceNo", "trackNo");
+        if (string.IsNullOrWhiteSpace(orderNumber))
+        {
+            return (false, "缺少 orderNumber（运单号）");
+        }
+
+        var settings = await trackConfigProvider.GetAsync(cancellationToken);
+        if (!settings.Enabled || string.IsNullOrWhiteSpace(settings.BaseUrl))
+        {
+            return (false, "轨迹服务未启用或未配置 BaseUrl（系统其他配置 TrackService）");
+        }
+
+        var baseUrl = settings.BaseUrl.Trim().TrimEnd('/');
+        var url = $"{baseUrl}/Track/Order/GetDetailTimeline";
+        var client = httpClientFactory.CreateClient(TrackHttpClientName);
+        using var request = new HttpRequestMessage(HttpMethod.Post, url);
+        request.Content = JsonContent.Create(new { orderNumber = orderNumber.Trim() });
+
+        var auth = httpContextAccessor.HttpContext?.Request.Headers.Authorization.ToString();
+        if (!string.IsNullOrWhiteSpace(auth))
+        {
+            request.Headers.TryAddWithoutValidation("Authorization", auth);
+        }
+
+        using var response = await client.SendAsync(request, cancellationToken);
+        var body = await response.Content.ReadAsStringAsync(cancellationToken);
+        if (!response.IsSuccessStatusCode)
+        {
+            return (false, $"轨迹查询失败 ({(int)response.StatusCode}): {Trim(body, 400)}");
+        }
+
+        try
+        {
+            using var timelineDoc = JsonDocument.Parse(body);
+            var root = timelineDoc.RootElement;
+            // 兼容直接数组 / { data: [] } / { Data: [] }
+            JsonElement arr = root;
+            if (root.ValueKind == JsonValueKind.Object)
+            {
+                if (root.TryGetProperty("data", out var d) || root.TryGetProperty("Data", out d))
+                    arr = d;
+                else if (root.TryGetProperty("items", out var items) || root.TryGetProperty("Items", out items))
+                    arr = items;
+            }
+
+            var events = new List<object>();
+            if (arr.ValueKind == JsonValueKind.Array)
+            {
+                foreach (var el in arr.EnumerateArray().Take(12))
+                {
+                    events.Add(new
+                    {
+                        time = Pick(el, "trackTime", "TrackTime", "time", "Time", "createTime", "CreateTime"),
+                        content = Pick(el, "trackContent", "TrackContent", "content", "Content", "description", "Description"),
+                        location = Pick(el, "location", "Location", "city", "City"),
+                        status = Pick(el, "trackCode", "TrackCode", "status", "Status")
+                    });
+                }
+            }
+
+            return (true, JsonSerializer.Serialize(new
+            {
+                orderNumber = orderNumber.Trim(),
+                count = events.Count,
+                events
+            }, JsonOptions));
+        }
+        catch
+        {
+            return (true, Trim(body, 4000));
+        }
+    }
+
+    private static string? GetString(JsonElement root, params string[] names)
+    {
+        foreach (var name in names)
+        {
+            if (root.TryGetProperty(name, out var el) && el.ValueKind == JsonValueKind.String)
+            {
+                var s = el.GetString();
+                if (!string.IsNullOrWhiteSpace(s)) return s;
+            }
+        }
+        return null;
+    }
+
+    private static decimal? GetDecimal(JsonElement root, params string[] names)
+    {
+        foreach (var name in names)
+        {
+            if (!root.TryGetProperty(name, out var el)) continue;
+            if (el.ValueKind == JsonValueKind.Number && el.TryGetDecimal(out var d)) return d;
+            if (el.ValueKind == JsonValueKind.String && decimal.TryParse(el.GetString(), out var parsed)) return parsed;
+        }
+        return null;
+    }
+
+    private static string? Pick(JsonElement el, params string[] names)
+    {
+        foreach (var name in names)
+        {
+            if (!el.TryGetProperty(name, out var p)) continue;
+            var s = p.ValueKind switch
+            {
+                JsonValueKind.String => p.GetString(),
+                JsonValueKind.Number => p.ToString(),
+                _ => p.ToString()
+            };
+            if (!string.IsNullOrWhiteSpace(s)) return s;
+        }
+        return null;
+    }
+
+    private static string Trim(string text, int max) =>
+        string.IsNullOrEmpty(text) ? string.Empty : text.Length <= max ? text : text[..max];
+}
diff --git a/src/Oms.Application/Services/Mcp/McpToolService.cs b/src/Oms.Application/Services/Mcp/McpToolService.cs
new file mode 100644
index 0000000..d1a412d
--- /dev/null
+++ b/src/Oms.Application/Services/Mcp/McpToolService.cs
@@ -0,0 +1,317 @@
+using System.Diagnostics;
+using System.Text.Json;
+using System.Text.Json.Nodes;
+using Fake.Application;
+using Microsoft.AspNetCore.Mvc;
+using Oms.Application.Dtos.Mcp;
+using Oms.Application.Dtos.Shared;
+using Oms.Application.Mcp;
+using Oms.Application.Shared;
+using Oms.Domain.CustomersAggregate.Repositories;
+using Oms.Domain.McpAggregate.Entities;
+using Oms.Domain.McpAggregate.Repositories;
+using Oms.Domain.XhsAggregate.Repositories;
+
+namespace Oms.Application.Services.Mcp;
+
+[ApiExplorerSettings(GroupName = "OMS-Mcp")]
+public class McpToolService : ApplicationService
+{
+    private IMcpToolRepository McpToolRepository => LazyServiceProvider.GetRequiredService<IMcpToolRepository>();
+    private IMcpToolExecutor ToolExecutor => LazyServiceProvider.GetRequiredService<IMcpToolExecutor>();
+    private IXhsAiProviderRepository AiProviderRepository => LazyServiceProvider.GetRequiredService<IXhsAiProviderRepository>();
+    private ICustomerRepository CustomerRepository => LazyServiceProvider.GetRequiredService<ICustomerRepository>();
+    private XhsLlmClient LlmClient => LazyServiceProvider.GetRequiredService<XhsLlmClient>();
+
+    /// <summary>列出 MCP 工具（内置目录 + 库表覆盖）</summary>
+    [HttpPost("/mcp/tool/list")]
+    public async Task<OmsItemsResult<McpToolOutput>> ListAsync()
+    {
+        var stored = await McpToolRepository.GetListAsync();
+        var byKey = stored.ToDictionary(x => x.ToolKey, StringComparer.OrdinalIgnoreCase);
+        var items = McpToolCatalog.All.Select(def =>
+        {
+            byKey.TryGetValue(def.ToolKey, out var row);
+            return new McpToolOutput
+            {
+                Id = row?.Id,
+                ToolKey = def.ToolKey,
+                DisplayName = string.IsNullOrWhiteSpace(row?.DisplayName) ? def.DisplayName : row!.DisplayName,
+                Description = string.IsNullOrWhiteSpace(row?.Description) ? def.Description : row!.Description,
+                Enabled = row?.Enabled ?? true,
+                SortOrder = row?.SortOrder ?? def.DefaultSortOrder,
+                InputSchemaJson = def.InputSchemaJson.Trim(),
+                Builtin = true
+            };
+        })
+        .OrderBy(x => x.SortOrder)
+        .ThenBy(x => x.ToolKey)
+        .ToList();
+
+        return new OmsItemsResult<McpToolOutput> { Items = items };
+    }
+
+    /// <summary>保存工具启用状态与描述</summary>
+    [HttpPost("/mcp/tool/save")]
+    public async Task<McpToolOutput> SaveAsync(McpToolSaveInput input)
+    {
+        var def = McpToolCatalog.Find(input.ToolKey)
+            ?? throw new BusinessException($"未知工具：{input.ToolKey}");
+
+        var entity = await McpToolRepository.GetByToolKeyAsync(def.ToolKey);
+        if (entity == null)
+        {
+            entity = new McpTool { ToolKey = def.ToolKey };
+            await McpToolRepository.InsertAsync(entity);
+        }
+
+        entity.DisplayName = string.IsNullOrWhiteSpace(input.DisplayName) ? def.DisplayName : input.DisplayName.Trim();
+        entity.Description = string.IsNullOrWhiteSpace(input.Description) ? def.Description : input.Description.Trim();
+        entity.Enabled = input.Enabled;
+        entity.SortOrder = input.SortOrder;
+        await McpToolRepository.UpdateAsync(entity);
+
+        return new McpToolOutput
+        {
+            Id = entity.Id,
+            ToolKey = entity.ToolKey,
+            DisplayName = entity.DisplayName,
+            Description = entity.Description,
+            Enabled = entity.Enabled,
+            SortOrder = entity.SortOrder,
+            InputSchemaJson = def.InputSchemaJson.Trim(),
+            Builtin = true
+        };
+    }
+
+    /// <summary>手动试跑工具</summary>
+    [HttpPost("/mcp/tool/call")]
+    public async Task<McpToolCallOutput> CallAsync(McpToolCallInput input)
+    {
+        await EnsureToolEnabledAsync(input.ToolKey);
+        var sw = Stopwatch.StartNew();
+        var (ok, content) = await ToolExecutor.InvokeAsync(input.ToolKey, input.ArgumentsJson ?? "{}");
+        return new McpToolCallOutput
+        {
+            ToolKey = input.ToolKey,
+            Success = ok,
+            Content = content,
+            ElapsedMs = sw.ElapsedMilliseconds
+        };
+    }
+
+    /// <summary>AI Agent 对话（可自动调用已启用 MCP 工具；带防滥用限流）</summary>
+    [HttpPost("/ai/agent/chat")]
+    public async Task<AiAgentChatOutput> AgentChatAsync(AiAgentChatInput input)
+    {
+        var customerId = await OmsSessionHelper.ResolveXhsCustomerIdAsync(CustomerRepository, CurrentUser);
+        var mapId = OmsSessionHelper.TryGetCustomerMapId(CurrentUser);
+        var principal = mapId is > 0
+            ? $"u{mapId.Value}"
+            : (customerId > 0 ? $"c{customerId}" : $"a{CurrentUser.GetId<int>()}");
+
+        AiAgentAbuseGuard.EnsureAllowed(principal);
+
+        var provider = await ResolveProviderAsync(customerId, input.ProviderKey.Trim());
+
+        var enabledTools = await ResolveEnabledToolsAsync(input.ToolKeys);
+        var llmTools = enabledTools.Select(t =>
+        {
+            JsonNode parameters;
+            try
+            {
+                parameters = JsonNode.Parse(t.InputSchemaJson) ?? new JsonObject();
+            }
+            catch
+            {
+                parameters = new JsonObject { ["type"] = "object" };
+            }
+
+            return new LlmToolDefinition
+            {
+                Name = t.ToolKey,
+                Description = $"{t.DisplayName}：{t.Description}",
+                Parameters = parameters
+            };
+        }).ToList();
+
+        var messages = new List<LlmChatMessage>
+        {
+            new()
+            {
+                Role = "system",
+                Content =
+                    "你是 OMS 客户侧物流助手。可用工具：" +
+                    "oms.price_check（查价格）、oms.channel_guide（查对客说明/品名可否承运）、oms.track_query（查轨迹）。" +
+                    "\n【强制槽位规则】信息不齐时禁止猜测调用工具，先用一两句中文追问缺项：" +
+                    "\n- 查价必填：目的国家、实重(kg)；选填：邮编、长宽高(cm)、货物属性、运输方式。" +
+                    "国家可用中文，你在调工具时转成二字码（美国→US、英国→GB）。" +
+                    "\n- 对客说明/可承运必填：销售产品代码或名称 + 客户品名；缺一不可。" +
+                    "\n- 查轨迹必填：运单号/跟踪号/客户单号；若上下文已有运单号可直接查。" +
+                    "\n【省 token】回复尽量短；一次只调必需工具；不要复述大段工具原文或 JSON。"
+            }
+        };
+
+        foreach (var m in TrimHistory(input.Messages))
+        {
+            messages.Add(new LlmChatMessage
+            {
+                Role = string.IsNullOrWhiteSpace(m.Role) ? "user" : m.Role.Trim(),
+                Content = AiAgentAbuseGuard.Truncate(m.Content, AiAgentAbuseGuard.MaxMessageChars)
+            });
+        }
+
+        var traces = new List<AiAgentToolTraceOutput>();
+        var maxRounds = Math.Clamp(
+            input.MaxToolRounds <= 0 ? AiAgentAbuseGuard.MaxToolRoundsHardCap : input.MaxToolRounds,
+            1,
+            AiAgentAbuseGuard.MaxToolRoundsHardCap);
+        var toolInvocations = 0;
+
+        for (var round = 0; round < maxRounds; round++)
+        {
+            AiAgentAbuseGuard.ConsumeLlmCall(principal);
+            var result = await LlmClient.ChatCompletionDetailedAsync(
+                provider,
+                messages,
+                llmTools.Count > 0 ? llmTools : null,
+                input.Model);
+
+            if (result.ToolCalls.Count == 0)
+            {
+                return new AiAgentChatOutput
+                {
+                    Content = result.Content?.Trim() ?? string.Empty,
+                    ToolTraces = traces
+                };
+            }
+
+            var calls = result.ToolCalls.Take(AiAgentAbuseGuard.MaxToolCallsPerRound).ToList();
+            messages.Add(new LlmChatMessage
+            {
+                Role = "assistant",
+                Content = AiAgentAbuseGuard.Truncate(result.Content, 400),
+                ToolCalls = calls
+            });
+
+            foreach (var call in calls)
+            {
+                if (toolInvocations >= AiAgentAbuseGuard.MaxToolInvocationsPerRequest)
+                {
+                    messages.Add(new LlmChatMessage
+                    {
+                        Role = "tool",
+                        ToolCallId = call.Id,
+                        Name = call.FunctionName,
+                        Content = "本轮工具调用次数已达上限，请根据已有结果直接回答用户。"
+                    });
+                    continue;
+                }
+
+                toolInvocations++;
+                var enabled = enabledTools.Any(t =>
+                    string.Equals(t.ToolKey, call.FunctionName, StringComparison.OrdinalIgnoreCase));
+                string toolContent;
+                var success = false;
+                if (!enabled)
+                {
+                    toolContent = $"工具未启用或不存在：{call.FunctionName}";
+                }
+                else
+                {
+                    (success, toolContent) = await ToolExecutor.InvokeAsync(
+                        call.FunctionName,
+                        call.ArgumentsJson,
+                        customerId);
+                }
+
+                toolContent = AiAgentAbuseGuard.Truncate(toolContent, AiAgentAbuseGuard.MaxToolResultChars);
+                traces.Add(new AiAgentToolTraceOutput
+                {
+                    ToolKey = call.FunctionName,
+                    ArgumentsJson = AiAgentAbuseGuard.Truncate(call.ArgumentsJson, 400),
+                    ResultPreview = toolContent.Length > 500 ? toolContent[..500] + "…" : toolContent,
+                    Success = success
+                });
+
+                messages.Add(new LlmChatMessage
+                {
+                    Role = "tool",
+                    ToolCallId = call.Id,
+                    Name = call.FunctionName,
+                    Content = toolContent
+                });
+            }
+        }
+
+        AiAgentAbuseGuard.ConsumeLlmCall(principal);
+        var final = await LlmClient.ChatCompletionDetailedAsync(provider, messages, tools: null, input.Model);
+        return new AiAgentChatOutput
+        {
+            Content = final.Content?.Trim()
+                ?? "已查询相关信息，请根据页面提示补充后重试，或联系客服。",
+            ToolTraces = traces
+        };
+    }
+
+    private static List<AiAgentChatMessageInput> TrimHistory(List<AiAgentChatMessageInput> raw)
+    {
+        var cleaned = (raw ?? [])
+            .Where(m => m != null && !string.IsNullOrWhiteSpace(m.Content))
+            .Select(m => new AiAgentChatMessageInput
+            {
+                Role = string.IsNullOrWhiteSpace(m.Role) ? "user" : m.Role.Trim().ToLowerInvariant(),
+                Content = m.Content ?? ""
+            })
+            .Where(m => m.Role is "user" or "assistant" or "system")
+            .ToList();
+
+        if (cleaned.Count <= AiAgentAbuseGuard.MaxHistoryMessages)
+        {
+            return cleaned;
+        }
+
+        return cleaned.Skip(cleaned.Count - AiAgentAbuseGuard.MaxHistoryMessages).ToList();
+    }
+
+    private async Task EnsureToolEnabledAsync(string toolKey)
+    {
+        var def = McpToolCatalog.Find(toolKey)
+            ?? throw new BusinessException($"未知工具：{toolKey}");
+        var row = await McpToolRepository.GetByToolKeyAsync(def.ToolKey);
+        if (row is { Enabled: false })
+        {
+            throw new BusinessException($"工具已禁用：{def.ToolKey}");
+        }
+    }
+
+    private async Task<List<McpToolOutput>> ResolveEnabledToolsAsync(List<string>? toolKeys)
+    {
+        var all = (await ListAsync()).Items;
+        var enabled = all.Where(x => x.Enabled).ToList();
+        if (toolKeys is { Count: > 0 })
+        {
+            var set = new HashSet<string>(toolKeys, StringComparer.OrdinalIgnoreCase);
+            enabled = enabled.Where(x => set.Contains(x.ToolKey)).ToList();
+        }
+        return enabled;
+    }
+
+    private async Task<Oms.Domain.XhsAggregate.Entities.XhsAiProvider> ResolveProviderAsync(
+        int customerId,
+        string providerKey)
+    {
+        var provider = await AiProviderRepository.GetByProviderKeyAsync(customerId, providerKey);
+        if (provider == null || !provider.Enabled)
+        {
+            provider = await AiProviderRepository.GetByProviderKeyAsync(0, providerKey);
+        }
+
+        if (provider == null || !provider.Enabled)
+        {
+            throw new BusinessException($"AI 提供商 {providerKey} 未配置或未启用");
+        }
+
+        return provider;
+    }
+}
diff --git a/src/Oms.Application/Shared/XhsLlmClient.cs b/src/Oms.Application/Shared/XhsLlmClient.cs
index 02c5166..c76d48f 100644
--- a/src/Oms.Application/Shared/XhsLlmClient.cs
+++ b/src/Oms.Application/Shared/XhsLlmClient.cs
@@ -1,12 +1,44 @@
 using System.Net.Http.Headers;
-using System.Net.Http.Json;
+using System.Text;
 using System.Text.Json;
+using System.Text.Json.Nodes;
 using Fake.Application;
 using Microsoft.Extensions.DependencyInjection;
+using Oms.Application.Mcp;
 using Oms.Domain.XhsAggregate.Entities;
 
 namespace Oms.Application.Shared;
 
+public class LlmChatMessage
+{
+    public string Role { get; set; } = "user";
+    public string? Content { get; set; }
+    public List<LlmToolCall>? ToolCalls { get; set; }
+    public string? ToolCallId { get; set; }
+    public string? Name { get; set; }
+}
+
+public class LlmToolCall
+{
+    public string Id { get; set; } = string.Empty;
+    public string Type { get; set; } = "function";
+    public string FunctionName { get; set; } = string.Empty;
+    public string ArgumentsJson { get; set; } = "{}";
+}
+
+public class LlmToolDefinition
+{
+    public string Name { get; set; } = string.Empty;
+    public string Description { get; set; } = string.Empty;
+    public JsonNode Parameters { get; set; } = new JsonObject();
+}
+
+public class LlmChatResult
+{
+    public string? Content { get; set; }
+    public List<LlmToolCall> ToolCalls { get; set; } = [];
+}
+
 /// <summary>
 /// OpenAI 兼容 Chat Completions 客户端（智谱 / DeepSeek / 豆包等）。
 /// </summary>
@@ -26,6 +58,22 @@ public class XhsLlmClient
         IReadOnlyList<(string Role, string Content)> messages,
         string? modelOverride = null,
         CancellationToken cancellationToken = default)
+    {
+        var result = await ChatCompletionDetailedAsync(
+            provider,
+            messages.Select(m => new LlmChatMessage { Role = m.Role, Content = m.Content }).ToList(),
+            tools: null,
+            modelOverride,
+            cancellationToken);
+        return result.Content?.Trim() ?? string.Empty;
+    }
+
+    public async Task<LlmChatResult> ChatCompletionDetailedAsync(
+        XhsAiProvider provider,
+        IReadOnlyList<LlmChatMessage> messages,
+        IReadOnlyList<LlmToolDefinition>? tools = null,
+        string? modelOverride = null,
+        CancellationToken cancellationToken = default)
     {
         if (string.IsNullOrWhiteSpace(provider.ApiKeyEnc))
         {
@@ -35,21 +83,19 @@ public class XhsLlmClient
         var model = modelOverride ?? provider.ApiSecretEnc;
         if (string.IsNullOrWhiteSpace(model))
         {
-            throw new BusinessException($"请先配置 {provider.DisplayName} 的模型名（ApiSecret 字段）");
+            throw new BusinessException($"请先配置 {provider.DisplayName} 的模型名（ApiSecret 字段）或在请求中传入 model");
         }
 
         var url = BuildChatUrl(provider.BaseUrl);
-        var payload = new
-        {
-            model,
-            messages = messages.Select(x => new { role = x.Role, content = x.Content }).ToList(),
-            temperature = 0.7
-        };
+        var payload = BuildPayload(model, messages, tools);
 
         var client = _httpClientFactory.CreateClient(HttpClientName);
         using var request = new HttpRequestMessage(HttpMethod.Post, url);
         request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", provider.ApiKeyEnc.Trim());
-        request.Content = JsonContent.Create(payload);
+        request.Content = new StringContent(payload.ToJsonString(new JsonSerializerOptions
+        {
+            Encoder = System.Text.Encodings.Web.JavaScriptEncoder.UnsafeRelaxedJsonEscaping
+        }), Encoding.UTF8, "application/json");
 
         using var response = await client.SendAsync(request, cancellationToken);
         var body = await response.Content.ReadAsStringAsync(cancellationToken);
@@ -62,10 +108,40 @@ public class XhsLlmClient
         var root = doc.RootElement;
         if (root.TryGetProperty("choices", out var choices) &&
             choices.GetArrayLength() > 0 &&
-            choices[0].TryGetProperty("message", out var message) &&
-            message.TryGetProperty("content", out var content))
+            choices[0].TryGetProperty("message", out var message))
         {
-            return content.GetString()?.Trim() ?? string.Empty;
+            var result = new LlmChatResult();
+            if (message.TryGetProperty("content", out var content) && content.ValueKind != JsonValueKind.Null)
+            {
+                result.Content = content.GetString();
+            }
+
+            if (message.TryGetProperty("tool_calls", out var toolCalls) &&
+                toolCalls.ValueKind == JsonValueKind.Array)
+            {
+                foreach (var call in toolCalls.EnumerateArray())
+                {
+                    var id = call.TryGetProperty("id", out var idEl) ? idEl.GetString() ?? "" : "";
+                    var fn = call.TryGetProperty("function", out var fnEl) ? fnEl : default;
+                    var name = fn.ValueKind == JsonValueKind.Object && fn.TryGetProperty("name", out var n)
+                        ? n.GetString() ?? ""
+                        : "";
+                    var args = fn.ValueKind == JsonValueKind.Object && fn.TryGetProperty("arguments", out var a)
+                        ? a.GetString() ?? "{}"
+                        : "{}";
+                    if (!string.IsNullOrWhiteSpace(name))
+                    {
+                        result.ToolCalls.Add(new LlmToolCall
+                        {
+                            Id = string.IsNullOrWhiteSpace(id) ? Guid.NewGuid().ToString("N") : id,
+                            FunctionName = name,
+                            ArgumentsJson = string.IsNullOrWhiteSpace(args) ? "{}" : args
+                        });
+                    }
+                }
+            }
+
+            return result;
         }
 
         if (root.TryGetProperty("error", out var error) &&
@@ -77,6 +153,78 @@ public class XhsLlmClient
         throw new BusinessException("AI 响应格式无法解析");
     }
 
+    private static JsonObject BuildPayload(
+        string model,
+        IReadOnlyList<LlmChatMessage> messages,
+        IReadOnlyList<LlmToolDefinition>? tools)
+    {
+        var msgArr = new JsonArray();
+        foreach (var m in messages)
+        {
+            var obj = new JsonObject { ["role"] = m.Role };
+            if (m.Role == "tool")
+            {
+                obj["tool_call_id"] = m.ToolCallId ?? "";
+                if (!string.IsNullOrWhiteSpace(m.Name)) obj["name"] = m.Name;
+                obj["content"] = m.Content ?? "";
+            }
+            else if (m.ToolCalls is { Count: > 0 })
+            {
+                if (m.Content != null) obj["content"] = m.Content;
+                var calls = new JsonArray();
+                foreach (var c in m.ToolCalls)
+                {
+                    calls.Add(new JsonObject
+                    {
+                        ["id"] = c.Id,
+                        ["type"] = "function",
+                        ["function"] = new JsonObject
+                        {
+                            ["name"] = c.FunctionName,
+                            ["arguments"] = c.ArgumentsJson
+                        }
+                    });
+                }
+                obj["tool_calls"] = calls;
+            }
+            else
+            {
+                obj["content"] = m.Content ?? "";
+            }
+
+            msgArr.Add(obj);
+        }
+
+        var payload = new JsonObject
+        {
+            ["model"] = model,
+            ["messages"] = msgArr,
+            ["temperature"] = 0.3
+        };
+
+        if (tools is { Count: > 0 })
+        {
+            var toolArr = new JsonArray();
+            foreach (var t in tools)
+            {
+                toolArr.Add(new JsonObject
+                {
+                    ["type"] = "function",
+                    ["function"] = new JsonObject
+                    {
+                        ["name"] = t.Name,
+                        ["description"] = t.Description,
+                        ["parameters"] = t.Parameters.DeepClone()
+                    }
+                });
+            }
+            payload["tools"] = toolArr;
+            payload["tool_choice"] = "auto";
+        }
+
+        return payload;
+    }
+
     private static string BuildChatUrl(string baseUrl)
     {
         var url = (baseUrl ?? string.Empty).Trim().TrimEnd('/');
@@ -90,8 +238,6 @@ public class XhsLlmClient
             return url;
         }
 
-        // OpenAI / DeepSeek：.../v1 → .../v1/chat/completions
-        // 智谱：.../api/paas/v4 → .../v4/chat/completions（勿再拼 /v1）
         if (url.EndsWith("/v1", StringComparison.OrdinalIgnoreCase) ||
             url.EndsWith("/v4", StringComparison.OrdinalIgnoreCase))
         {
@@ -120,6 +266,10 @@ public static class XhsLlmServiceExtensions
         {
             client.Timeout = TimeSpan.FromMinutes(3);
         });
+        services.AddHttpClient(McpToolExecutor.TrackHttpClientName, client =>
+        {
+            client.Timeout = TimeSpan.FromSeconds(45);
+        });
         services.AddTransient<XhsLlmClient>();
         return services;
     }
diff --git a/src/Oms.Domain/McpAggregate/Entities/McpTool.cs b/src/Oms.Domain/McpAggregate/Entities/McpTool.cs
new file mode 100644
index 0000000..ef2c5fb
--- /dev/null
+++ b/src/Oms.Domain/McpAggregate/Entities/McpTool.cs
@@ -0,0 +1,22 @@
+using Oms.Domain.Shared;
+using SqlSugar;
+
+namespace Oms.Domain.McpAggregate.Entities;
+
+[SugarTable("t_mcp_tool")]
+public class McpTool : OmsAuditedAggregateRoot
+{
+    public string ToolKey { get; set; } = string.Empty;
+
+    public string DisplayName { get; set; } = string.Empty;
+
+    [SugarColumn(Length = 1000)]
+    public string Description { get; set; } = string.Empty;
+
+    public bool Enabled { get; set; } = true;
+
+    public int SortOrder { get; set; }
+
+    [SugarColumn(IsNullable = true, Length = 512)]
+    public string? Remark { get; set; }
+}
diff --git a/src/Oms.Domain/McpAggregate/Repositories/IMcpToolRepository.cs b/src/Oms.Domain/McpAggregate/Repositories/IMcpToolRepository.cs
new file mode 100644
index 0000000..7c3d0c9
--- /dev/null
+++ b/src/Oms.Domain/McpAggregate/Repositories/IMcpToolRepository.cs
@@ -0,0 +1,9 @@
+using Fake.Domain.Repositories;
+using Oms.Domain.McpAggregate.Entities;
+
+namespace Oms.Domain.McpAggregate.Repositories;
+
+public interface IMcpToolRepository : IRepository<McpTool>
+{
+    Task<McpTool?> GetByToolKeyAsync(string toolKey, CancellationToken cancellationToken = default);
+}
diff --git a/src/Oms.SqlSugarCore/Mcp/McpToolRepository.cs b/src/Oms.SqlSugarCore/Mcp/McpToolRepository.cs
new file mode 100644
index 0000000..cf7c6c7
--- /dev/null
+++ b/src/Oms.SqlSugarCore/Mcp/McpToolRepository.cs
@@ -0,0 +1,14 @@
+using Fake.DependencyInjection;
+using Oms.Domain.McpAggregate.Entities;
+using Oms.Domain.McpAggregate.Repositories;
+using Oms.SqlSugarCore.Repositories;
+
+namespace Oms.SqlSugarCore.Mcp;
+
+public class McpToolRepository : OmsSqlSugarRepository<McpTool>, IMcpToolRepository, IScopedDependency
+{
+    public Task<McpTool?> GetByToolKeyAsync(string toolKey, CancellationToken cancellationToken = default)
+    {
+        return FirstOrDefaultAsync(x => x.ToolKey == toolKey, cancellationToken);
+    }
+}