BREAKING CHANGE(api): Migrate public API to ai-sdk v6 and refactor core agent architecture: replace class-based DualAgent/Driver/Guardian with a single runAgent function; introduce ts_tools factories for tools, a compactMessages compaction subpath, and truncateOutput utility; simplify ToolRegistry to return ToolSet and remove legacy BaseToolWrapper/tool classes; update package exports and dependencies and bump major version.

ts_tools/tool.json.ts

@@ -0,0 +1,53 @@
+import * as plugins from './plugins.js';
+
+export function jsonTool(): plugins.ToolSet {
+  return {
+    json_validate: plugins.tool({
+      description:
+        'Validate a JSON string and optionally check for required fields.',
+      inputSchema: plugins.z.object({
+        jsonString: plugins.z.string().describe('JSON string to validate'),
+        requiredFields: plugins.z
+          .array(plugins.z.string())
+          .optional()
+          .describe('Fields that must exist at the top level'),
+      }),
+      execute: async ({
+        jsonString,
+        requiredFields,
+      }: {
+        jsonString: string;
+        requiredFields?: string[];
+      }) => {
+        try {
+          const parsed = JSON.parse(jsonString);
+          if (requiredFields?.length) {
+            const missing = requiredFields.filter((f) => !(f in parsed));
+            if (missing.length) {
+              return `Invalid: missing required fields: ${missing.join(', ')}`;
+            }
+          }
+          const type = Array.isArray(parsed) ? 'array' : typeof parsed;
+          return `Valid JSON (${type})`;
+        } catch (e) {
+          return `Invalid JSON: ${(e as Error).message}`;
+        }
+      },
+    }),
+
+    json_transform: plugins.tool({
+      description: 'Parse a JSON string and return it pretty-printed.',
+      inputSchema: plugins.z.object({
+        jsonString: plugins.z.string().describe('JSON string to format'),
+      }),
+      execute: async ({ jsonString }: { jsonString: string }) => {
+        try {
+          const parsed = JSON.parse(jsonString);
+          return JSON.stringify(parsed, null, 2);
+        } catch (e) {
+          return `Error parsing JSON: ${(e as Error).message}`;
+        }
+      },
+    }),
+  };
+}