Simple TypeScript MCP Server

Implementation Reference

• src/server.ts:66-98 (handler)

  MCP server.tool call that registers and implements the 'getAllNotes' tool handler. No input schema required, fetches all notes via notesStore and returns formatted JSON response.

  server.tool(
    "getAllNotes",
    {},
    async () => {
      try {
        const notesList = notesStore.getAllNotes();
        
        return {
          content: [
            {
              type: "text",
              text: JSON.stringify({
                success: true,
                notes: notesList
              }, null, 2)
            }
          ]
        };
      } catch (err) {
        return {
          content: [
            {
              type: "text",
              text: JSON.stringify({
                success: false,
                error: "Failed to retrieve notes"
              }, null, 2)
            }
          ]
        };
      }
    },
  );

• src/notes-store.ts:34-36 (helper)

  Core implementation of getAllNotes in the NotesStore class, returning all stored notes as Note[]

  getAllNotes(): Note[] {
    return Object.values(this.notes);
  }

• src/notes-store.ts:2-7 (schema)

  Type schema for Note objects returned by getAllNotes.

  export interface Note {
    id: string;
    title: string;
    content: string;
    createdAt: string;
  }