Update Agent Documentation with MCP Directory Structure and Model Integration
- Added a new section in the MCP documentation detailing the directory structure for assistants, enhancing clarity on how to define namespaced MCP servers. - Included examples of using assistant models within MCP tools, providing guidance on referencing models in tool configurations. - Updated the README to include a link to the new Models documentation, improving navigation and resource accessibility for users.
This commit is contained in:
Max
parent
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commit
b7fc91a312
3 changed files with 425 additions and 15 deletions
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@ -181,6 +181,7 @@ ctx.Send({
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- [Hooks](docs/hooks.md) - Create/Next hooks and agent lifecycle
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- [Hooks](docs/hooks.md) - Create/Next hooks and agent lifecycle
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- [Context API](docs/context-api.md) - Messaging, memory, trace, MCP
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- [Context API](docs/context-api.md) - Messaging, memory, trace, MCP
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- [MCP Integration](docs/mcp.md) - Tool servers and resources
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- [MCP Integration](docs/mcp.md) - Tool servers and resources
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- [Models](docs/models.md) - Assistant-scoped data models
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- [Search](docs/search.md) - Web, knowledge base, and database search
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- [Search](docs/search.md) - Web, knowledge base, and database search
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- [Pages](docs/pages.md) - Web UI for agents (SUI framework)
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- [Pages](docs/pages.md) - Web UI for agents (SUI framework)
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- [Internationalization](docs/i18n.md) - Multi-language support
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- [Internationalization](docs/i18n.md) - Multi-language support
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@ -2,6 +2,26 @@
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Model Context Protocol (MCP) enables tool integration with external services.
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Model Context Protocol (MCP) enables tool integration with external services.
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## Directory Structure
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Assistants can define their own namespaced MCP servers in the `mcps/` directory:
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```
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assistants/
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└── my-assistant/
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├── package.yao
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└── mcps/
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├── tools.mcp.yao # → agents.my-assistant.tools
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├── calculator.mcp.yao # → agents.my-assistant.calculator
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└── mapping/
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└── tools/
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└── schemes/
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├── search.in.yao
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└── search.out.yao
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```
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MCP servers are automatically loaded with `agents.<assistant-id>.` prefix.
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## Defining MCP Servers
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## Defining MCP Servers
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Create `mcps/tools.mcp.yao` in the assistant directory:
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Create `mcps/tools.mcp.yao` in the assistant directory:
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@ -75,9 +95,7 @@ Map Yao Processes directly to MCP tools:
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```json
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```json
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{
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{
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"mcp": {
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"mcp": {
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"servers": [
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"servers": [{ "server_id": "tools", "tools": ["search", "calculate"] }]
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{ "server_id": "tools", "tools": ["search", "calculate"] }
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]
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}
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}
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}
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}
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```
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```
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@ -106,8 +124,8 @@ function Create(ctx: agent.Context, messages: agent.Message[]): agent.Create {
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messages,
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messages,
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mcp_servers: [
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mcp_servers: [
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{ server_id: "tools", tools: ["search"] },
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{ server_id: "tools", tools: ["search"] },
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{ server_id: "data", resources: ["data://reports"] }
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{ server_id: "data", resources: ["data://reports"] },
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]
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],
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};
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};
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}
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}
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```
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```
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@ -126,7 +144,7 @@ const tools = ctx.mcp.ListTools("server-id");
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```typescript
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```typescript
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const result = ctx.mcp.CallTool("server-id", "search", {
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const result = ctx.mcp.CallTool("server-id", "search", {
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query: "example",
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query: "example",
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limit: 10
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limit: 10,
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});
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});
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// { content: [{ type: "text", text: "..." }] }
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// { content: [{ type: "text", text: "..." }] }
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```
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```
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@ -137,13 +155,13 @@ const result = ctx.mcp.CallTool("server-id", "search", {
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// Sequential
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// Sequential
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const results = ctx.mcp.CallTools("server-id", [
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const results = ctx.mcp.CallTools("server-id", [
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{ name: "step1", arguments: { input: "a" } },
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{ name: "step1", arguments: { input: "a" } },
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{ name: "step2", arguments: { input: "b" } }
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{ name: "step2", arguments: { input: "b" } },
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]);
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]);
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// Parallel
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// Parallel
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const results = ctx.mcp.CallToolsParallel("server-id", [
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const results = ctx.mcp.CallToolsParallel("server-id", [
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{ name: "api1", arguments: {} },
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{ name: "api1", arguments: {} },
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{ name: "api2", arguments: {} }
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{ name: "api2", arguments: {} },
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]);
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]);
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```
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```
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@ -189,9 +207,60 @@ mcps/
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```
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```
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The `x-process-args` maps MCP arguments to Yao Process parameters:
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The `x-process-args` maps MCP arguments to Yao Process parameters:
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- `":arguments"` - Pass entire arguments object
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- `":arguments"` - Pass entire arguments object
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- `"$args.field"` - Extract specific field
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- `"$args.field"` - Extract specific field
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### Schema with Nested Objects
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```json
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{
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"type": "object",
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"description": "Extract structured data from input",
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"properties": {
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"intent": {
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"type": "string",
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"enum": ["query", "create", "update"],
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"description": "Operation intent"
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},
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"items": {
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"type": "array",
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"items": {
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"type": "object",
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"properties": {
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"name": { "type": "string" },
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"value": { "type": "number" }
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},
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"required": ["name", "value"]
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}
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}
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},
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"required": ["intent"],
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"x-process-args": [":arguments"]
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}
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```
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## Using Assistant Models in MCP
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MCP tools can reference assistant's own models:
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**mcps/data.mcp.yao**
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```json
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{
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"label": "Data Tools",
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"transport": "process",
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"tools": {
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"list_orders": "models.agents.my-assistant.order.Paginate",
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"get_order": "models.agents.my-assistant.order.Find",
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"create_order": "models.agents.my-assistant.order.Create",
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"custom_query": "agents.my-assistant.orders.Query"
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}
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}
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```
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See [Models](models.md) for defining assistant models.
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## Error Handling
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## Error Handling
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```typescript
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```typescript
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@ -237,9 +306,7 @@ function Next(ctx: agent.Context, payload: agent.Payload): agent.Next {
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"name": "Math Assistant",
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"name": "Math Assistant",
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"connector": "gpt-4o",
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"connector": "gpt-4o",
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"mcp": {
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"mcp": {
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"servers": [
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"servers": [{ "server_id": "calculator", "tools": ["add", "multiply"] }]
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{ "server_id": "calculator", "tools": ["add", "multiply"] }
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]
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}
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}
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}
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}
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```
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```
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@ -254,7 +321,7 @@ function Create(ctx: agent.Context, messages: agent.Message[]): agent.Create {
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// Enable calculator
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// Enable calculator
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return {
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return {
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messages,
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messages,
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mcp_servers: [{ server_id: "calculator" }]
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mcp_servers: [{ server_id: "calculator" }],
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};
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};
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}
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}
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return { messages };
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return { messages };
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@ -264,13 +331,13 @@ function Next(ctx: agent.Context, payload: agent.Payload): agent.Next {
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const { tools } = payload;
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const { tools } = payload;
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if (tools?.length > 0) {
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if (tools?.length > 0) {
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const calcResult = tools.find(t => t.server === "calculator");
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const calcResult = tools.find((t) => t.server === "calculator");
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if (calcResult?.result) {
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if (calcResult?.result) {
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return {
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return {
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data: {
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data: {
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answer: calcResult.result,
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answer: calcResult.result,
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expression: calcResult.arguments
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expression: calcResult.arguments,
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}
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},
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};
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};
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}
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}
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}
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}
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342
agent/docs/models.md
Normal file
342
agent/docs/models.md
Normal file
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@ -0,0 +1,342 @@
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# Assistant Models
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Assistants can define their own namespaced data models in the `models/` directory. These models are automatically loaded with the `agents.<assistant-id>.` prefix and use isolated database tables.
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## Directory Structure
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```
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assistants/
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└── my-assistant/
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├── package.yao
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└── models/
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├── order.mod.yao # → agents.my-assistant.order
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├── item.mod.yao # → agents.my-assistant.item
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└── nested/
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└── log.mod.yao # → agents.my-assistant.nested.log
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```
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## Model Definition
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Standard Yao model definition with automatic table prefixing.
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**models/order.mod.yao**
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```json
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{
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"name": "Order",
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"label": "Order Record",
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"description": "Customer orders",
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"table": {
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"name": "order",
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"comment": "Order records"
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},
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"columns": [
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{
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"name": "id",
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"type": "ID",
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"label": "ID",
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"primary": true
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},
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{
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"name": "order_no",
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"type": "string",
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"label": "Order Number",
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"length": 100,
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"nullable": false,
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"unique": true,
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"index": true
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},
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{
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"name": "customer_id",
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"type": "string",
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"label": "Customer ID",
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"length": 255,
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"nullable": false,
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"index": true
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},
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{
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"name": "total_amount",
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"type": "decimal",
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"label": "Total Amount",
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"precision": 15,
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"scale": 2,
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"nullable": false
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},
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{
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"name": "status",
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"type": "enum",
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"label": "Status",
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"option": ["pending", "confirmed", "shipped", "completed", "cancelled"],
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"default": "pending",
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"nullable": false,
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"index": true
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},
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{
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"name": "metadata",
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"type": "json",
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"label": "Metadata",
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"nullable": true
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}
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],
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"relations": {
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"items": {
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"type": "hasMany",
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"model": "item",
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"key": "order_id",
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"foreign": "id"
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}
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},
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"indexes": [
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{
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"name": "idx_customer_status",
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"columns": ["customer_id", "status"],
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"type": "index"
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}
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],
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"option": {
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"timestamps": true,
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"soft_deletes": true
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}
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}
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```
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## Table Naming
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Tables are automatically prefixed with `agents_<assistant-id>_`:
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| Assistant ID | Model File | Model ID | Table Name |
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| ------------ | ---------------------- | ------------------------ | ------------------------ |
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| `expense` | `models/order.mod.yao` | `agents.expense.order` | `agents_expense_order` |
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| `tests.demo` | `models/user.mod.yao` | `agents.tests.demo.user` | `agents_tests_demo_user` |
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## Using Models
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### In Hooks
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```typescript
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import { Process } from "@yao/runtime";
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function Create(ctx: agent.Context, messages: agent.Message[]): agent.Create {
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// Query assistant's own model
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const orders = Process("models.agents.my-assistant.order.Paginate", {
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wheres: [{ column: "status", value: "pending" }],
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limit: 10,
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});
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return { messages };
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}
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```
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### In MCP Tools
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```json
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{
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"transport": "process",
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"tools": {
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"list_orders": "models.agents.my-assistant.order.Paginate",
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"get_order": "models.agents.my-assistant.order.Find",
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"create_order": "models.agents.my-assistant.order.Create",
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"update_order": "models.agents.my-assistant.order.Update"
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}
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}
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```
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### In Scripts
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**src/orders.ts**
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```typescript
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import { Process } from "@yao/runtime";
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export function ListPending(): any[] {
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return Process("models.agents.my-assistant.order.Get", {
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wheres: [{ column: "status", value: "pending" }],
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orders: [{ column: "created_at", option: "desc" }],
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});
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}
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export function CreateOrder(data: any): any {
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return Process("models.agents.my-assistant.order.Create", data);
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}
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export function UpdateStatus(id: number, status: string): any {
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return Process("models.agents.my-assistant.order.Update", id, { status });
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}
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```
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## Column Types
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| Type | Description | Options |
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| ------------ | -------------------------- | ----------------------- |
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| `ID` | Auto-increment primary key | `primary: true` |
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| `string` | VARCHAR | `length` (default: 255) |
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| `text` | TEXT | - |
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| `integer` | INT | - |
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| `bigInteger` | BIGINT | - |
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| `float` | FLOAT | `precision`, `scale` |
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| `decimal` | DECIMAL | `precision`, `scale` |
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| `boolean` | BOOLEAN | - |
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| `date` | DATE | - |
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| `datetime` | DATETIME | - |
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| `timestamp` | TIMESTAMP | - |
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| `json` | JSON/JSONB | - |
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| `enum` | ENUM | `option: [...]` |
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## Column Options
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| Option | Type | Description |
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| ----------- | --------- | ----------------- |
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| `nullable` | `boolean` | Allow NULL values |
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| `default` | `any` | Default value |
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| `unique` | `boolean` | Unique constraint |
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| `index` | `boolean` | Create index |
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| `primary` | `boolean` | Primary key |
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| `length` | `integer` | String length |
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| `precision` | `integer` | Decimal precision |
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| `scale` | `integer` | Decimal scale |
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| `comment` | `string` | Column comment |
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|
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|
## Relations
|
||||||
|
|
||||||
|
```json
|
||||||
|
{
|
||||||
|
"relations": {
|
||||||
|
"items": {
|
||||||
|
"type": "hasMany",
|
||||||
|
"model": "item",
|
||||||
|
"key": "order_id",
|
||||||
|
"foreign": "id"
|
||||||
|
},
|
||||||
|
"customer": {
|
||||||
|
"type": "hasOne",
|
||||||
|
"model": "customer",
|
||||||
|
"key": "id",
|
||||||
|
"foreign": "customer_id"
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
| Type | Description |
|
||||||
|
| ---------------- | ----------------------------- |
|
||||||
|
| `hasOne` | One-to-one relationship |
|
||||||
|
| `hasMany` | One-to-many relationship |
|
||||||
|
| `hasOneThrough` | Has one through intermediate |
|
||||||
|
| `hasManyThrough` | Has many through intermediate |
|
||||||
|
|
||||||
|
## Model Options
|
||||||
|
|
||||||
|
```json
|
||||||
|
{
|
||||||
|
"option": {
|
||||||
|
"timestamps": true,
|
||||||
|
"soft_deletes": true,
|
||||||
|
"permission": true
|
||||||
|
}
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
| Option | Description |
|
||||||
|
| -------------- | -------------------------------------- |
|
||||||
|
| `timestamps` | Add `created_at`, `updated_at` columns |
|
||||||
|
| `soft_deletes` | Add `deleted_at` for soft delete |
|
||||||
|
| `permission` | Enable permission checks |
|
||||||
|
|
||||||
|
## Process Reference
|
||||||
|
|
||||||
|
Common model processes:
|
||||||
|
|
||||||
|
| Process | Description | Arguments |
|
||||||
|
| ------------- | ---------------- | --------------------------- |
|
||||||
|
| `Find` | Get by ID | `id`, `query?` |
|
||||||
|
| `Get` | Get records | `query` |
|
||||||
|
| `Paginate` | Paginated list | `query`, `page`, `pagesize` |
|
||||||
|
| `Create` | Create record | `data` |
|
||||||
|
| `Update` | Update record | `id`, `data` |
|
||||||
|
| `Save` | Create or update | `data` |
|
||||||
|
| `Delete` | Delete record | `id` |
|
||||||
|
| `Destroy` | Hard delete | `id` |
|
||||||
|
| `Insert` | Batch insert | `columns`, `rows` |
|
||||||
|
| `UpdateWhere` | Batch update | `query`, `data` |
|
||||||
|
| `DeleteWhere` | Batch delete | `query` |
|
||||||
|
|
||||||
|
## Migration
|
||||||
|
|
||||||
|
Models are automatically migrated when Yao starts. The migration:
|
||||||
|
|
||||||
|
1. Creates tables if not exist
|
||||||
|
2. Adds new columns
|
||||||
|
3. Creates indexes
|
||||||
|
4. Does NOT drop columns (safe migration)
|
||||||
|
|
||||||
|
To force schema sync:
|
||||||
|
|
||||||
|
```bash
|
||||||
|
yao migrate --reset # Warning: drops and recreates tables
|
||||||
|
```
|
||||||
|
|
||||||
|
## Example: Complete Assistant with Models
|
||||||
|
|
||||||
|
**assistants/inventory/package.yao**
|
||||||
|
|
||||||
|
```json
|
||||||
|
{
|
||||||
|
"name": "Inventory Assistant",
|
||||||
|
"connector": "gpt-4o",
|
||||||
|
"mcp": {
|
||||||
|
"servers": [{ "server_id": "inventory" }]
|
||||||
|
}
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
**assistants/inventory/models/product.mod.yao**
|
||||||
|
|
||||||
|
```json
|
||||||
|
{
|
||||||
|
"name": "Product",
|
||||||
|
"table": { "name": "product" },
|
||||||
|
"columns": [
|
||||||
|
{ "name": "id", "type": "ID", "primary": true },
|
||||||
|
{ "name": "sku", "type": "string", "length": 50, "unique": true },
|
||||||
|
{ "name": "name", "type": "string", "length": 200 },
|
||||||
|
{ "name": "quantity", "type": "integer", "default": 0 },
|
||||||
|
{ "name": "price", "type": "decimal", "precision": 10, "scale": 2 }
|
||||||
|
],
|
||||||
|
"option": { "timestamps": true }
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
**assistants/inventory/mcps/inventory.mcp.yao**
|
||||||
|
|
||||||
|
```json
|
||||||
|
{
|
||||||
|
"label": "Inventory",
|
||||||
|
"transport": "process",
|
||||||
|
"tools": {
|
||||||
|
"list_products": "models.agents.inventory.product.Paginate",
|
||||||
|
"get_product": "models.agents.inventory.product.Find",
|
||||||
|
"update_stock": "agents.inventory.stock.Update"
|
||||||
|
}
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
**assistants/inventory/src/stock.ts**
|
||||||
|
|
||||||
|
```typescript
|
||||||
|
import { Process } from "@yao/runtime";
|
||||||
|
|
||||||
|
export function Update(args: { sku: string; quantity: number }): any {
|
||||||
|
const product = Process("models.agents.inventory.product.Get", {
|
||||||
|
wheres: [{ column: "sku", value: args.sku }],
|
||||||
|
limit: 1,
|
||||||
|
});
|
||||||
|
|
||||||
|
if (!product || product.length === 0) {
|
||||||
|
throw new Error(`Product not found: ${args.sku}`);
|
||||||
|
}
|
||||||
|
|
||||||
|
return Process("models.agents.inventory.product.Update", product[0].id, {
|
||||||
|
quantity: args.quantity,
|
||||||
|
});
|
||||||
|
}
|
||||||
|
```
|
||||||
Loading…
Add table
Reference in a new issue