Merge branch 'main' into patch-2

Author: zcaceres

src/everything/README.md

@@ -1,4 +1,4 @@
-# Everything MCP Server 
+# Everything MCP Server
 
 This MCP server attempts to exercise all the features of the MCP protocol. It is not intended to be a useful server, but rather a test server for builders of MCP clients. It implements prompts, tools, resources, sampling, and more to showcase MCP capabilities.
 
@@ -15,7 +15,7 @@ This MCP server attempts to exercise all the features of the MCP protocol. It is
 2. `add`
    - Adds two numbers together
    - Inputs:
-     - `a` (number): First number 
+     - `a` (number): First number
      - `b` (number): Second number
    - Returns: Text result of the addition
 
@@ -27,7 +27,7 @@ This MCP server attempts to exercise all the features of the MCP protocol. It is
    - Returns: Completion message with duration and steps
    - Sends progress notifications during execution
 
-4. `sampleLLM` 
+4. `sampleLLM`
    - Demonstrates LLM sampling capability using MCP sampling feature
    - Inputs:
      - `prompt` (string): The prompt to send to the LLM
@@ -39,17 +39,23 @@ This MCP server attempts to exercise all the features of the MCP protocol. It is
    - No inputs required
    - Returns: Base64 encoded PNG image data
 
+6. `printEnv`
+   - Prints all environment variables
+   - Useful for debugging MCP server configuration
+   - No inputs required
+   - Returns: JSON string of all environment variables
+
 ### Resources
 
 The server provides 100 test resources in two formats:
-- Even numbered resources: 
+- Even numbered resources:
   - Plaintext format
   - URI pattern: `test://static/resource/{even_number}`
   - Content: Simple text description
 
 - Odd numbered resources:
   - Binary blob format
-  - URI pattern: `test://static/resource/{odd_number}`  
+  - URI pattern: `test://static/resource/{odd_number}`
   - Content: Base64 encoded binary data
 
 Resource features:

src/everything/everything.ts

@@ -40,6 +40,8 @@ const LongRunningOperationSchema = z.object({
   steps: z.number().default(5).describe("Number of steps in the operation"),
 });
 
+const PrintEnvSchema = z.object({});
+
 const SampleLLMSchema = z.object({
   prompt: z.string().describe("The prompt to send to the LLM"),
   maxTokens: z
@@ -54,6 +56,7 @@ enum ToolName {
   ECHO = "echo",
   ADD = "add",
   LONG_RUNNING_OPERATION = "longRunningOperation",
+  PRINT_ENV = "printEnv",
   SAMPLE_LLM = "sampleLLM",
   GET_TINY_IMAGE = "getTinyImage",
 }
@@ -297,6 +300,11 @@ export const createServer = () => {
         description: "Adds two numbers",
         inputSchema: zodToJsonSchema(AddSchema) as ToolInput,
       },
+      {
+        name: ToolName.PRINT_ENV,
+        description: "Prints all environment variables, helpful for debugging MCP server configuration",
+        inputSchema: zodToJsonSchema(PrintEnvSchema) as ToolInput,
+      },
       {
         name: ToolName.LONG_RUNNING_OPERATION,
         description:
@@ -374,6 +382,17 @@ export const createServer = () => {
       };
     }
 
+    if (name === ToolName.PRINT_ENV) {
+      return {
+        content: [
+          {
+            type: "text",
+            text: JSON.stringify(process.env, null, 2),
+          },
+        ],
+      };
+    }
+
     if (name === ToolName.SAMPLE_LLM) {
       const validatedArgs = SampleLLMSchema.parse(args);
       const { prompt, maxTokens } = validatedArgs;