[WIP] Refactor everything server to be more modular and use recommended APIs.

* Updated architecture.md

* Refactor/renamed static.ts to file.ts

* Refactor/renamed complex.ts to args.ts

* Refactor/renamed template.ts to templates.ts.

* In resource.ts,
  -  improved registerEmbeddedResourcePrompt to allow selection of blob or text resource type.

* In file.ts
  - refactor/renamed registerStaticResources to registerFileResources to highlight the fact that it is using files as resources.

* In args.ts
  - refactor/renamed registerComplexPrompt to registerArgumentsPrompt to highlight the fact that it is demonstrating prompt arguments.

* Updated inline documentation throughout

src/everything/docs/architecture.md

@@ -29,13 +29,13 @@ src/everything
 ├── prompts
 │   ├── index.ts
 │   ├── simple.ts
-│   ├── complex.ts
+│   ├── args.ts
 │   ├── completions.ts
 │   └── resource.ts
 ├── resources
 │   ├── index.ts
-│   ├── template.ts
+│   ├── templates.ts
-│   └── static.ts
+│   └── files.ts
 ├── docs
 │   ├── server-instructions.md
 │   └── architecture.md
@@ -84,26 +84,26 @@ At `src/everything`:
     - `registerPrompts(server)` orchestrator; delegates to individual prompt registrations.
   - simple.ts
     - Registers `simple-prompt`: a prompt with no arguments that returns a single user message.
-  - complex.ts
+  - args.ts
-    - Registers `complex-prompt`: a prompt with two arguments (`city` required, `state` optional) used to compose a message.
+    - Registers `args-prompt`: a prompt with two arguments (`city` required, `state` optional) used to compose a message.
   - completions.ts
     - Registers `completable-prompt`: a prompt whose arguments support server-driven completions using the SDK’s `completable(...)` helper (e.g., completing `department` and context-aware `name`).
   - resource.ts
-    - Exposes `registerEmbeddedResourcePrompt(server)` which registers `resource-prompt` — a prompt that accepts `resourceId` and embeds a dynamically generated text resource within the returned messages. Internally reuses helpers from `resources/template.ts`.
+    - Exposes `registerEmbeddedResourcePrompt(server)` which registers `resource-prompt` — a prompt that accepts `resourceType` ("Text" or "Blob") and `resourceId` (integer), and embeds a dynamically generated resource of the requested type within the returned messages. Internally reuses helpers from `resources/templates.ts`.
 
 - resources/
 
   - index.ts
-    - `registerResources(server)` orchestrator; delegates to template‑based dynamic resources and static resources by calling `registerResourceTemplates(server)` and `registerStaticResources(server)`.
+    - `registerResources(server)` orchestrator; delegates to template‑based dynamic resources and static file-based resources by calling `registerResourceTemplates(server)` and `registerFileResources(server)`.
-  - template.ts
+  - templates.ts
     - Registers two dynamic, template‑driven resources using `ResourceTemplate`:
       - Text: `demo://resource/dynamic/text/{index}` (MIME: `text/plain`)
       - Blob: `demo://resource/dynamic/blob/{index}` (MIME: `application/octet-stream`, Base64 payload)
     - The `{index}` path variable must be a finite integer. Content is generated on demand with a timestamp.
-    - Exposes helpers `textResource(uri, index)` and `textResourceUri(index)` so other modules can construct and embed text resources directly (e.g., from prompts).
+    - Exposes helpers `textResource(uri, index)`, `textResourceUri(index)`, `blobResource(uri, index)`, and `blobResourceUri(index)` so other modules can construct and embed dynamic resources directly (e.g., from prompts).
-  - static.ts
+  - files.ts
-    - Registers static resources for each file in the `docs/` folder.
+    - Registers static file-based resources for each file in the `docs/` folder.
-    - URIs follow the pattern: `demo://static/docs/<filename>`.
+    - URIs follow the pattern: `demo://resource/static/document/<filename>`.
     - Serves markdown files as `text/markdown`, `.txt` as `text/plain`, `.json` as `application/json`, others default to `text/plain`.
 
 - docs/
@@ -159,14 +159,14 @@ At `src/everything`:
 - Prompts
 
   - `simple-prompt` (prompts/simple.ts): No-argument prompt that returns a static user message.
-  - `complex-prompt` (prompts/complex.ts): Two-argument prompt with `city` (required) and `state` (optional) used to compose a question.
+  - `args-prompt` (prompts/args.ts): Two-argument prompt with `city` (required) and `state` (optional) used to compose a question.
   - `completable-prompt` (prompts/completions.ts): Demonstrates argument auto-completions with the SDK’s `completable` helper; `department` completions drive context-aware `name` suggestions.
-  - `resource-prompt` (prompts/resource.ts): Accepts `resourceId` (string convertible to integer) and returns messages that include an embedded dynamic text resource generated via `resources/template.ts`.
+  - `resource-prompt` (prompts/resource.ts): Accepts `resourceType` ("Text" or "Blob") and `resourceId` (string convertible to integer) and returns messages that include an embedded dynamic resource of the selected type generated via `resources/templates.ts`.
 
 - Resources
   - Dynamic Text: `demo://resource/dynamic/text/{index}` (content generated on the fly)
   - Dynamic Blob: `demo://resource/dynamic/blob/{index}` (base64 payload generated on the fly)
-  - Static Docs: `demo://static/docs/<filename>` (serves files from `src/everything/docs/` as static resources)
+  - Static Docs: `demo://resource/static/document/<filename>` (serves files from `src/everything/docs/` as static file-based resources)
 
 ## Extension Points
 

src/everything/prompts/args.ts

@@ -0,0 +1,41 @@
+import { z } from "zod";
+import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
+
+/**
+ * Register a prompt with arguments
+ * - Two arguments, one required and one optional
+ * - Combines argument values in the returned prompt
+ *
+ * @param server
+ */
+export const registerArgumentsPrompt = (server: McpServer) => {
+  // Prompt arguments
+  const promptArgsSchema = {
+    city: z.string().describe("Name of the city"),
+    state: z.string().describe("Name of the state").optional(),
+  };
+
+  // Register the prompt
+  server.registerPrompt(
+    "args-prompt",
+    {
+      title: "Arguments Prompt",
+      description: "A prompt with two arguments, one required and one optional",
+      argsSchema: promptArgsSchema,
+    },
+    (args) => {
+      const location = `${args?.city}${args?.state ? `, ${args?.state}` : ""}`;
+      return {
+        messages: [
+          {
+            role: "user",
+            content: {
+              type: "text",
+              text: `What's weather in ${location}?`,
+            },
+          },
+        ],
+      };
+    }
+  );
+};

src/everything/prompts/completions.ts

@@ -2,36 +2,54 @@ import { z } from "zod";
 import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
 import { completable } from "@modelcontextprotocol/sdk/server/completable.js";
 
+/**
+ * Register a prompt with completable arguments
+ * - Two required arguments, both with completion handlers
+ * - First argument value will be included in context for second argument
+ * - Allows second argument to depend on the first argument value
+ *
+ * @param server
+ */
 export const registerPromptWithCompletions = (server: McpServer) => {
+  // Prompt arguments
   const promptArgsSchema = {
-    department: completable(z.string(), (value) => {
+    department: completable(
-      return ["Engineering", "Sales", "Marketing", "Support"].filter((d) =>
+      z.string().describe("Choose the department."),
-        d.startsWith(value)
+      (value) => {
-      );
+        return ["Engineering", "Sales", "Marketing", "Support"].filter((d) =>
-    }),
+          d.startsWith(value)
-    name: completable(z.string(), (value, context) => {
+        );
-      const department = context?.arguments?.["department"];
-      if (department === "Engineering") {
-        return ["Alice", "Bob", "Charlie"].filter((n) => n.startsWith(value));
-      } else if (department === "Sales") {
-        return ["David", "Eve", "Frank"].filter((n) => n.startsWith(value));
-      } else if (department === "Marketing") {
-        return ["Grace", "Henry", "Iris"].filter((n) => n.startsWith(value));
-      } else if (department === "Support") {
-        return ["John", "Kim", "Lee"].filter((n) => n.startsWith(value));
       }
-      return [];
+    ),
-    }),
+    name: completable(
+      z
+        .string()
+        .describe("Choose a team member to lead the selected department."),
+      (value, context) => {
+        const department = context?.arguments?.["department"];
+        if (department === "Engineering") {
+          return ["Alice", "Bob", "Charlie"].filter((n) => n.startsWith(value));
+        } else if (department === "Sales") {
+          return ["David", "Eve", "Frank"].filter((n) => n.startsWith(value));
+        } else if (department === "Marketing") {
+          return ["Grace", "Henry", "Iris"].filter((n) => n.startsWith(value));
+        } else if (department === "Support") {
+          return ["John", "Kim", "Lee"].filter((n) => n.startsWith(value));
+        }
+        return [];
+      }
+    ),
   };
 
+  // Register the prompt
   server.registerPrompt(
     "completable-prompt",
     {
       title: "Team Management",
-      description: "Choose a team member to lead their specific department.",
+      description: "First argument choice narrows values for second argument.",
       argsSchema: promptArgsSchema,
     },
-    async ({ department, name }) => ({
+    ({ department, name }) => ({
       messages: [
         {
           role: "user",

src/everything/prompts/index.ts

@@ -1,16 +1,17 @@
 import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
 import { registerSimplePrompt } from "./simple.js";
-import { registerComplexPrompt } from "./complex.js";
+import { registerArgumentsPrompt } from "./args.js";
 import { registerPromptWithCompletions } from "./completions.js";
 import { registerEmbeddedResourcePrompt } from "./resource.js";
 
 /**
  * Register the prompts with the MCP server.
+ *
  * @param server
  */
 export const registerPrompts = (server: McpServer) => {
   registerSimplePrompt(server);
-  registerComplexPrompt(server);
+  registerArgumentsPrompt(server);
   registerPromptWithCompletions(server);
   registerEmbeddedResourcePrompt(server);
 };

src/everything/prompts/resource.ts

@@ -1,15 +1,47 @@
 import { z } from "zod";
 import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
-import { textResource, textResourceUri } from "../resources/template.js";
+import { completable } from "@modelcontextprotocol/sdk/server/completable.js";
+import {
+  textResource,
+  textResourceUri,
+  blobResourceUri,
+  blobResource,
+} from "../resources/templates.js";
 
+/**
+ * Register a prompt with an embedded resource reference
+ * - Takes a resource type and id
+ * - Returns the corresponding dynamically created resource
+ *
+ * @param server
+ */
 export const registerEmbeddedResourcePrompt = (server: McpServer) => {
-  // NOTE: Currently, prompt arguments can only be strings since type is not field of PromptArgument
+  // Resource types
-  // Consequently, we must define it as a string and convert the argument to number before using it
+  const BLOB_TYPE = "Blob";
-  // https://modelcontextprotocol.io/specification/2025-11-25/schema#promptargument
+  const TEXT_TYPE = "Text";
+  const resourceTypes = [BLOB_TYPE, TEXT_TYPE];
+
+  // Prompt arguments
   const promptArgsSchema = {
-    resourceId: z.string().describe("ID of the text resource to fetch"),
+    resourceType: completable(
+      z.string().describe("Type of resource to fetch"),
+      (value: string) => {
+        return [TEXT_TYPE, BLOB_TYPE].filter((t) => t.startsWith(value));
+      }
+    ),
+    // NOTE: Currently, prompt arguments can only be strings since type is not field of PromptArgument
+    // Consequently, we must define it as a string and convert the argument to number before using it
+    // https://modelcontextprotocol.io/specification/2025-11-25/schema#promptargument
+    resourceId: completable(
+      z.string().describe("ID of the text resource to fetch"),
+      (value: string) => {
+        const resourceId = Number(value);
+        return Number.isInteger(resourceId) ? [value] : [];
+      }
+    ),
   };
 
+  // Register the prompt
   server.registerPrompt(
     "resource-prompt",
     {
@@ -18,6 +50,15 @@ export const registerEmbeddedResourcePrompt = (server: McpServer) => {
       argsSchema: promptArgsSchema,
     },
     (args) => {
+      // Validate resource type argument
+      const { resourceType } = args;
+      if (!resourceTypes.includes(resourceType)) {
+        throw new Error(
+          `Invalid resourceType: ${args?.resourceType}. Must be ${TEXT_TYPE} or ${BLOB_TYPE}.`
+        );
+      }
+
+      // Validate resourceId argument
       const resourceId = Number(args?.resourceId);
       if (!Number.isFinite(resourceId) || !Number.isInteger(resourceId)) {
         throw new Error(
@@ -25,8 +66,15 @@ export const registerEmbeddedResourcePrompt = (server: McpServer) => {
         );
       }
 
-      const uri = textResourceUri(resourceId);
+      // Get resource based on the resource type
-      const resource = textResource(uri, resourceId);
+      const uri =
+        resourceType === TEXT_TYPE
+          ? textResourceUri(resourceId)
+          : blobResourceUri(resourceId);
+      const resource =
+        resourceType === TEXT_TYPE
+          ? textResource(uri, resourceId)
+          : blobResource(uri, resourceId);
 
       return {
         messages: [
@@ -34,7 +82,7 @@ export const registerEmbeddedResourcePrompt = (server: McpServer) => {
             role: "user",
             content: {
               type: "text",
-              text: `This prompt includes the text resource with id: ${resourceId}. Please analyze the following resource:`,
+              text: `This prompt includes the ${resourceType} resource with id: ${resourceId}. Please analyze the following resource:`,
             },
           },
           {

src/everything/prompts/simple.ts

@@ -1,6 +1,13 @@
 import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
 
+/**
+ * Register a simple prompt with no arguments
+ * - Returns the fixed text of the prompt with no modifications
+ *
+ * @param server
+ */
 export const registerSimplePrompt = (server: McpServer) => {
+  // Register the prompt
   server.registerPrompt(
     "simple-prompt",
     {

src/everything/resources/files.ts

@@ -0,0 +1,90 @@
+import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
+import { dirname, join } from "path";
+import { fileURLToPath } from "url";
+import { readdirSync, readFileSync, statSync } from "fs";
+
+/**
+ * Register static file resources
+ * - Each file in src/everything/docs is exposed as an individual static resource
+ * - URIs follow the pattern: "demo://static/docs/<filename>"
+ * - Markdown (.md) files are served as mime type "text/markdown"
+ * - Text (.txt) files are served as mime type "text/plain"
+ * - JSON (.json) files are served as mime type "application/json"
+ *
+ * @param server
+ */
+export const registerFileResources = (server: McpServer) => {
+  // Read the entries in the docs directory
+  const __filename = fileURLToPath(import.meta.url);
+  const __dirname = dirname(__filename);
+  const docsDir = join(__dirname, "..", "docs");
+  let entries: string[] = [];
+  try {
+    entries = readdirSync(docsDir);
+  } catch (e) {
+    // If docs/ folder is missing or unreadable, just skip registration
+    return;
+  }
+
+  // Register each file as a static resource
+  for (const name of entries) {
+    // Only process files, not directories
+    const fullPath = join(docsDir, name);
+    try {
+      const st = statSync(fullPath);
+      if (!st.isFile()) continue;
+    } catch {
+      continue;
+    }
+
+    // Prepare file resource info
+    const uri = `demo://resource/static/document/${encodeURIComponent(name)}`;
+    const mimeType = getMimeType(name);
+    const displayName = `Docs: ${name}`;
+    const description = `Static document file exposed from /docs: ${name}`;
+
+    // Register file resource
+    server.registerResource(
+      displayName,
+      uri,
+      { mimeType, description },
+      async (uri) => {
+        const text = readFileSafe(fullPath);
+        return {
+          contents: [
+            {
+              uri: uri.toString(),
+              mimeType,
+              text,
+            },
+          ],
+        };
+      }
+    );
+  }
+};
+
+/**
+ * Get the mimetype based on filename
+ * @param fileName
+ */
+function getMimeType(fileName: string): string {
+  const lower = fileName.toLowerCase();
+  if (lower.endsWith(".md") || lower.endsWith(".markdown"))
+    return "text/markdown";
+  if (lower.endsWith(".txt")) return "text/plain";
+  if (lower.endsWith(".json")) return "application/json";
+  return "text/plain";
+}
+
+/**
+ * Read a file or return an error message if it fails
+ * @param path
+ */
+function readFileSafe(path: string): string {
+  try {
+    return readFileSync(path, "utf-8");
+  } catch (e) {
+    return `Error reading file: ${path}. ${e}`;
+  }
+}

src/everything/resources/index.ts

@@ -1,6 +1,6 @@
 import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
-import { registerResourceTemplates } from "./template.js";
+import { registerResourceTemplates } from "./templates.js";
-import { registerStaticResources } from "./static.js";
+import { registerFileResources } from "./files.js";
 
 /**
  * Register the resources with the MCP server.
@@ -8,5 +8,5 @@ import { registerStaticResources } from "./static.js";
  */
 export const registerResources = (server: McpServer) => {
   registerResourceTemplates(server);
-  registerStaticResources(server);
+  registerFileResources(server);
 };

src/everything/resources/templates.ts

@@ -0,0 +1,128 @@
+import {
+  McpServer,
+  ResourceTemplate,
+} from "@modelcontextprotocol/sdk/server/mcp.js";
+
+const uriBase: string = "demo://resource/dynamic";
+const textUriBase: string = `${uriBase}/text`;
+const blobUriBase: string = `${uriBase}/blob`;
+const textUriTemplate: string = `${textUriBase}/{index}`;
+const blobUriTemplate: string = `${blobUriBase}/{index}`;
+
+/**
+ * Create a dynamic text resource
+ * - Exposed for use by embedded resource prompt example
+ * @param uri
+ * @param index
+ */
+export const textResource = (uri: URL, index: number) => {
+  const timestamp = new Date().toLocaleTimeString();
+  return {
+    uri: uri.toString(),
+    mimeType: "text/plain",
+    text: `Resource ${index}: This is a plaintext resource created at ${timestamp}`,
+  };
+};
+
+/**
+ * Create a dynamic blob resource
+ * - Exposed for use by embedded resource prompt example
+ * @param uri
+ * @param index
+ */
+export const blobResource = (uri: URL, index: number) => {
+  const timestamp = new Date().toLocaleTimeString();
+  const resourceText = Buffer.from(
+    `Resource ${index}: This is a base64 blob created at ${timestamp}`
+  ).toString("base64");
+  return {
+    uri: uri.toString(),
+    mimeType: "text/plain",
+    text: resourceText,
+  };
+};
+
+/**
+ * Create a dynamic text resource URI
+ * - Exposed for use by embedded resource prompt example
+ * @param index
+ */
+export const textResourceUri = (index: number) =>
+  new URL(`${textUriBase}/${index}`);
+
+/**
+ * Create a dynamic blob resource URI
+ * - Exposed for use by embedded resource prompt example
+ * @param index
+ */
+export const blobResourceUri = (index: number) =>
+  new URL(`${blobUriBase}/${index}`);
+
+/**
+ * Register resource templates with the MCP server.
+ * - Text and blob resources, dynamically generated from the URI {index} variable
+ * - Any finite integer is acceptable for the index variable
+ * - List resources method will not return these resources
+ * - These are only accessible via template URIs
+ * - Both blob and text resources:
+ *   - have content that is dynamically generated, including a timestamp
+ *   - have different template URIs
+ *     - Blob: "demo://resource/dynamic/blob/{index}"
+ *     - Text: "demo://resource/dynamic/text/{index}"
+ *
+ * @param server
+ */
+export const registerResourceTemplates = (server: McpServer) => {
+  // Parse the index from the URI
+  const parseIndex = (uri: URL, variables: Record<string, unknown>) => {
+    const uriError = `Unknown resource: ${uri.toString()}`;
+    if (
+      uri.toString().startsWith(textUriBase) &&
+      uri.toString().startsWith(blobUriBase)
+    ) {
+      throw new Error(uriError);
+    } else {
+      const idxStr = String((variables as any).index ?? "");
+      const idx = Number(idxStr);
+      if (Number.isFinite(idx) && Number.isInteger(idx)) {
+        return idx;
+      } else {
+        throw new Error(uriError);
+      }
+    }
+  };
+
+  // Register the text resource template
+  server.registerResource(
+    "Dynamic Text Resource",
+    new ResourceTemplate(textUriTemplate, { list: undefined }),
+    {
+      mimeType: "text/plain",
+      description:
+        "Plaintext dynamic resource fabricated from the {index} variable, which must be an integer.",
+    },
+    async (uri, variables) => {
+      const index = parseIndex(uri, variables);
+      return {
+        contents: [textResource(uri, index)],
+      };
+    }
+  );
+
+  // Register the blob resource template
+  server.registerResource(
+    "Dynamic Blob Resource",
+    new ResourceTemplate(blobUriTemplate, { list: undefined }),
+    {
+      mimeType: "application/octet-stream",
+      description:
+        "Binary (base64) dynamic resource fabricated from the {index} variable, which must be an integer.",
+    },
+    async (uri, variables) => {
+      const index = parseIndex(uri, variables);
+      return {
+        contents: [blobResource(uri, index)],
+      };
+    }
+  );
+};