.

agents/gemini.ts

@@ -35,7 +35,6 @@ export const gemini = agent({
         env: {
           GEMINI_API_KEY: apiKey,
           GITHUB_INSTALLATION_TOKEN: githubInstallationToken,
-          GEMINI_CLI_DISABLE_SCHEMA_VALIDATION: "1",
         },
         onStdout: (chunk) => {
           const trimmed = chunk.trim();

fixtures/basic.txt

@@ -1 +1 @@
-comment on https://github.com/pullfrogai/scratch/pull/29 that writes a really funny joke about Arktype
+comment on https://github.com/pullfrogai/scratch/pull/29 that writes a really funny joke about Codex

mcp/arkConfig.ts

@@ -2,6 +2,6 @@ import { configure } from "arktype/config";
 
 configure({
   toJsonSchema: {
-    dialect: null,
+    // dialect: null,
   },
 });

mcp/shared.ts

@@ -65,36 +65,9 @@ export const tool = <const params>(toolDef: Tool<any, StandardSchemaV1<params>>)
   return toolDef;
 };
 
-// recursively remove $schema fields from JSON Schema objects
-function removeSchemaFields(obj: any): any {
-  if (obj === null || typeof obj !== "object") {
-    return obj;
-  }
-
-  if (Array.isArray(obj)) {
-    return obj.map(removeSchemaFields);
-  }
-
-  const result: any = {};
-  for (const [key, value] of Object.entries(obj)) {
-    // skip $schema fields
-    if (key === "$schema") {
-      continue;
-    }
-    result[key] = removeSchemaFields(value);
-  }
-
-  return result;
-}
-
 export const addTools = (server: FastMCP, tools: Tool<any, any>[]) => {
   for (const tool of tools) {
-    // clone tool and remove $schema from parameters schema
-    const cleanedTool = {
-      ...tool,
-      parameters: tool.parameters ? removeSchemaFields(tool.parameters) : undefined,
-    };
-    server.addTool(cleanedTool);
+    server.addTool(tool);
   }
   return server;
 };

play.ts

@@ -24,7 +24,7 @@ export async function run(
 
     const inputs: Required<Inputs> = {
       prompt,
-      agent: "gemini",
+      agent: "codex",
       ...flatMorph(agents, (_, agent) =>
         agent.apiKeyNames.map((inputKey) => [inputKey, process.env[inputKey.toUpperCase()]])
       ),