add targets field to filter tools per agent harness (pi/claude/all)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/servers/mcp-tool-server.ts

@@ -32,6 +32,7 @@ type ToolMeta = {
   label: string;
   description: string;
   inputs: Record<string, ToolParam>;
+  targets?: string;
 };
 
 type DiscoveredTool = {
@@ -138,6 +139,7 @@ function discoverTools(dirs: string[]): DiscoveredTool[] {
       const { meta } = parseFrontmatter(content);
 
       if (!meta.name || !meta.description) continue;
+      if ((meta.targets as string ?? 'all') === 'pi') continue;
       if (seen.has(meta.name)) continue;
       seen.add(meta.name);
 

src/servers/sync-marketplace.ts

@@ -21,6 +21,7 @@ type MarketplaceTool = {
   body: string;
   version: number;
   language: string;
+  targets: string;
   inputs: Record<string, ToolInput>;
   implementation: string;
 };
@@ -37,6 +38,9 @@ function buildToolMd(tool: MarketplaceTool): string {
   lines.push(`description: ${tool.description}`);
   lines.push(`version: ${tool.version}`);
   lines.push(`language: ${tool.language}`);
+  if (tool.targets && tool.targets !== 'all') {
+    lines.push(`targets: ${tool.targets}`);
+  }
 
   if (tool.inputs && Object.keys(tool.inputs).length > 0) {
     lines.push('inputs:');

src/servers/tool-loader-source.ts

@@ -19,6 +19,7 @@ type ToolMeta = {
   description: string;
   language: 'typescript' | 'bash' | 'python';
   inputs: Record<string, ToolParam>;
+  targets?: string;
 };
 
 function parseFrontmatter(content: string): { meta: Partial<ToolMeta>; body: string } {
@@ -171,6 +172,8 @@ function discoverTools(dir: string): Array<{ toolDir: string; entryFile: string;
       continue;
     }
 
+    if ((meta.targets as string ?? 'all') === 'claude') continue;
+
     discovered.push({ toolDir, entryFile, meta: meta as ToolMeta });
   }