feat: initial public release (MAESTRO)

src/mcp/tool-adapter.ts

@@ -0,0 +1,75 @@
+import type { ToolDef } from '../llm/openai-compat.js';
+
+const SLUG = /^[a-z0-9_-]{1,64}$/;
+
+export function normalizeToolName(serverId: string, toolName: string): string {
+  return `mcp__${serverId}__${toolName}`;
+}
+
+export function parseToolName(name: string): { serverId: string; toolName: string } | null {
+  if (!name.startsWith('mcp__')) return null;
+  const parts = name.split('__');
+  if (parts.length !== 3) return null;
+  const [, serverId, toolName] = parts;
+  if (!SLUG.test(serverId) || !SLUG.test(toolName)) return null;
+  return { serverId, toolName };
+}
+
+export function matchesAnyPattern(name: string, patterns: string[]): boolean {
+  return patterns.some((p) => {
+    if (p === name) return true;
+    if (p.endsWith('__*')) {
+      const prefix = p.slice(0, -1);
+      return name.startsWith(prefix) && name.length > prefix.length;
+    }
+    return false;
+  });
+}
+
+export interface CachedTool {
+  serverId: string;
+  toolName: string;
+  description: string | null;
+  inputSchema: string | null;
+}
+
+const MAX_DESCRIPTION = 1000;
+
+export function buildToolDefsFromCache(
+  cache: CachedTool[],
+  patterns: string[],
+  serverNames: Map<string, string>,
+): ToolDef[] {
+  const mcpPatterns = patterns.filter((p) => p.startsWith('mcp__'));
+  if (mcpPatterns.length === 0) return [];
+
+  const defs: ToolDef[] = [];
+  for (const tool of cache) {
+    if (!SLUG.test(tool.serverId) || !SLUG.test(tool.toolName)) continue;
+    const canonical = normalizeToolName(tool.serverId, tool.toolName);
+    if (!matchesAnyPattern(canonical, mcpPatterns)) continue;
+
+    let params: unknown = { type: 'object', properties: {} };
+    if (tool.inputSchema) {
+      try {
+        params = JSON.parse(tool.inputSchema);
+      } catch {
+        // Keep default object schema
+      }
+    }
+
+    const serverLabel = serverNames.get(tool.serverId) ?? tool.serverId;
+    const rawDesc = tool.description ?? '';
+    const description = `[外部ツール: ${serverLabel} 提供] ${rawDesc}`.slice(0, MAX_DESCRIPTION);
+
+    defs.push({
+      type: 'function',
+      function: {
+        name: canonical,
+        description,
+        parameters: params as Record<string, unknown>,
+      },
+    });
+  }
+  return defs;
+}