⛓️ server.ts
This commit is contained in:
nirholas
@@ -12,6 +12,8 @@ import {
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ListResourcesRequestSchema,
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ReadResourceRequestSchema,
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ListResourceTemplatesRequestSchema,
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ListPromptsRequestSchema,
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GetPromptRequestSchema,
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} from "@modelcontextprotocol/sdk/types.js";
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import * as fs from "node:fs/promises";
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import * as path from "node:path";
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@@ -150,6 +152,7 @@ export function createServer(): Server {
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capabilities: {
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tools: {},
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resources: {},
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prompts: {},
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},
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}
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);
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@@ -644,6 +647,298 @@ ${commands.map((c) => `- **${c.name}** ${c.isDirectory ? "(directory)" : "(file)
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}
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);
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// ---- Prompts -----------------------------------------------------------
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server.setRequestHandler(ListPromptsRequestSchema, async () => ({
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prompts: [
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{
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name: "explain_tool",
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description:
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"Explain how a specific Claude Code tool works, including its input schema, permissions, and execution flow.",
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arguments: [
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{
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name: "toolName",
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description: "Tool directory name, e.g. 'BashTool', 'FileEditTool'",
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required: true,
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},
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],
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},
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{
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name: "explain_command",
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description: "Explain how a specific Claude Code slash command works.",
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arguments: [
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{
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name: "commandName",
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description: "Command name, e.g. 'commit', 'review', 'mcp'",
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required: true,
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},
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],
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},
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{
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name: "architecture_overview",
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description:
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"Get a guided tour of the Claude Code architecture with explanations of each subsystem.",
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},
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{
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name: "how_does_it_work",
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description:
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"Explain how a specific feature or subsystem of Claude Code works.",
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arguments: [
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{
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name: "feature",
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description:
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"Feature or subsystem, e.g. 'permission system', 'MCP client', 'query engine', 'bridge'",
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required: true,
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},
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],
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},
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{
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name: "compare_tools",
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description:
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"Compare two Claude Code tools side by side — purpose, inputs, permissions, implementation.",
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arguments: [
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{ name: "tool1", description: "First tool name", required: true },
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{ name: "tool2", description: "Second tool name", required: true },
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],
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},
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],
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}));
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server.setRequestHandler(
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GetPromptRequestSchema,
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async (request: {
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params: { name: string; arguments?: Record<string, string> };
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}) => {
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const { name, arguments: args } = request.params;
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switch (name) {
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case "explain_tool": {
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const toolName = args?.toolName;
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if (!toolName) throw new Error("toolName argument is required");
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const toolDir = safePath(`tools/${toolName}`);
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if (!toolDir || !(await dirExists(toolDir)))
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throw new Error(`Tool not found: ${toolName}`);
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const files = await listDir(toolDir);
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const mainFile =
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files.find(
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(f) => f === `${toolName}.ts` || f === `${toolName}.tsx`
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) ?? files.find((f) => f.endsWith(".ts") || f.endsWith(".tsx"));
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let source = "";
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if (mainFile) {
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source = await fs.readFile(path.join(toolDir, mainFile), "utf-8");
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}
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return {
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description: `Explanation of the ${toolName} tool`,
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messages: [
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{
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role: "user" as const,
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content: {
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type: "text" as const,
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text: `Analyze and explain this Claude Code tool implementation. Cover:\n1. Purpose\n2. Input Schema\n3. Permissions\n4. Execution Flow\n5. Output\n6. Safety characteristics\n\nFiles in tools/${toolName}/: ${files.join(", ")}\n\nMain source (${mainFile ?? "not found"}):\n\`\`\`typescript\n${source}\n\`\`\``,
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},
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},
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],
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};
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}
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case "explain_command": {
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const commandName = args?.commandName;
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if (!commandName)
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throw new Error("commandName argument is required");
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const candidates = [
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`commands/${commandName}`,
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`commands/${commandName}.ts`,
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`commands/${commandName}.tsx`,
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];
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let found: string | null = null;
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let isDir = false;
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for (const c of candidates) {
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const abs = safePath(c);
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if (abs && (await dirExists(abs))) {
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found = abs;
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isDir = true;
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break;
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}
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if (abs && (await fileExists(abs))) {
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found = abs;
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break;
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}
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}
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if (!found) throw new Error(`Command not found: ${commandName}`);
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let source = "";
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let fileList = "";
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if (isDir) {
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const files = await listDir(found);
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fileList = files.join(", ");
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const indexFile = files.find(
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(f) => f === "index.ts" || f === "index.tsx"
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);
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if (indexFile) {
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source = await fs.readFile(
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path.join(found, indexFile),
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"utf-8"
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);
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}
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} else {
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source = await fs.readFile(found, "utf-8");
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fileList = path.basename(found);
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}
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return {
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description: `Explanation of the /${commandName} command`,
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messages: [
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{
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role: "user" as const,
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content: {
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type: "text" as const,
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text: `Analyze and explain this Claude Code slash command. Cover:\n1. Purpose\n2. Type (prompt vs action)\n3. Allowed Tools\n4. Arguments\n5. Implementation\n\nFiles: ${fileList}\n\nSource:\n\`\`\`typescript\n${source}\n\`\`\``,
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},
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},
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],
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};
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}
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case "architecture_overview": {
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const readmePath = path.resolve(SRC_ROOT, "..", "README.md");
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let readme = "";
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try {
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readme = await fs.readFile(readmePath, "utf-8");
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} catch {
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/* */
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}
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const topLevel = await listDir(SRC_ROOT);
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const tools = await getToolList();
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const commands = await getCommandList();
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return {
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description: "Architecture overview of Claude Code",
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messages: [
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{
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role: "user" as const,
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content: {
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type: "text" as const,
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text: `Give a comprehensive guided tour of the Claude Code architecture.\n\n## README\n${readme}\n\n## src/ entries\n${topLevel.join("\n")}\n\n## Tools (${tools.length})\n${tools.map((t) => `- ${t.name}: ${t.files.join(", ")}`).join("\n")}\n\n## Commands (${commands.length})\n${commands.map((c) => `- ${c.name} ${c.isDirectory ? "(dir)" : "(file)"}`).join("\n")}`,
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},
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},
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],
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};
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}
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case "how_does_it_work": {
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const feature = args?.feature;
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if (!feature) throw new Error("feature argument is required");
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const featureMap: Record<string, string[]> = {
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"permission system": [
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"utils/permissions/",
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"hooks/toolPermission/",
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"Tool.ts",
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],
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permissions: [
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"utils/permissions/",
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"hooks/toolPermission/",
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"Tool.ts",
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],
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"mcp client": [
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"services/mcp/",
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"tools/MCPTool/",
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"tools/ListMcpResourcesTool/",
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],
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mcp: ["services/mcp/", "entrypoints/mcp.ts", "tools/MCPTool/"],
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"tool system": ["Tool.ts", "tools.ts", "tools/"],
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tools: ["Tool.ts", "tools.ts"],
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"query engine": ["QueryEngine.ts", "query/"],
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bridge: ["bridge/"],
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"ide integration": ["bridge/"],
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context: ["context.ts", "context/"],
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commands: ["commands.ts", "types/command.ts"],
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"command system": ["commands.ts", "types/command.ts", "commands/"],
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plugins: ["plugins/"],
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skills: ["skills/"],
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tasks: ["tasks.ts", "tasks/", "tools/TaskCreateTool/"],
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coordinator: ["coordinator/", "tools/AgentTool/"],
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"multi-agent": ["coordinator/", "tools/AgentTool/"],
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memory: ["memdir/", "commands/memory/"],
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voice: ["voice/"],
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server: ["server/"],
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};
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const paths = featureMap[feature.toLowerCase()] ?? [];
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let contextFiles = "";
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for (const p of paths) {
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const abs = safePath(p);
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if (!abs) continue;
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try {
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const stat = await fs.stat(abs);
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if (stat.isDirectory()) {
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const files = await listDir(abs);
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contextFiles += `\n### ${p}\nFiles: ${files.join(", ")}\n`;
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} else {
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const content = await fs.readFile(abs, "utf-8");
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const preview = content.split("\n").slice(0, 200).join("\n");
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contextFiles += `\n### ${p} (first 200 lines)\n\`\`\`typescript\n${preview}\n\`\`\`\n`;
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}
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} catch {
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/* skip */
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}
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}
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return {
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description: `How ${feature} works in Claude Code`,
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messages: [
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{
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role: "user" as const,
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content: {
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type: "text" as const,
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text: `Explain how "${feature}" works in the Claude Code CLI.\n${contextFiles || "(No specific files mapped — use search_source and read_source_file to find relevant code.)"}`,
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},
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},
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],
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};
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}
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case "compare_tools": {
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const tool1 = args?.tool1;
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const tool2 = args?.tool2;
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if (!tool1 || !tool2)
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throw new Error("Both tool1 and tool2 arguments are required");
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const sources: string[] = [];
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for (const toolName of [tool1, tool2]) {
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const toolDir = safePath(`tools/${toolName}`);
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if (!toolDir || !(await dirExists(toolDir))) {
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sources.push(`// Tool not found: ${toolName}`);
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continue;
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}
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const files = await listDir(toolDir);
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const mainFile =
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files.find(
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(f) => f === `${toolName}.ts` || f === `${toolName}.tsx`
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) ?? files.find((f) => f.endsWith(".ts") || f.endsWith(".tsx"));
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if (mainFile) {
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const content = await fs.readFile(
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path.join(toolDir, mainFile),
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"utf-8"
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);
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sources.push(`// tools/${toolName}/${mainFile}\n${content}`);
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} else {
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sources.push(`// No main source found for ${toolName}`);
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}
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}
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return {
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description: `Comparison of ${tool1} vs ${tool2}`,
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messages: [
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{
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role: "user" as const,
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content: {
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type: "text" as const,
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text: `Compare these two Claude Code tools:\n\n## ${tool1}\n\`\`\`typescript\n${sources[0]}\n\`\`\`\n\n## ${tool2}\n\`\`\`typescript\n${sources[1]}\n\`\`\``,
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},
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},
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],
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};
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}
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default:
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throw new Error(`Unknown prompt: ${name}`);
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}
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}
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);
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return server;
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}
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@@ -659,3 +954,4 @@ export async function validateSrcRoot(): Promise<void> {
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process.exit(1);
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}
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}
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