get proxy ready for zod 4

packages/proxy/package.json

@@ -97,7 +97,7 @@
     "vite-tsconfig-paths": "^4.3.2",
     "vitest": "^2.1.9",
     "yargs": "^17.7.2",
-    "zod-to-json-schema": "^3.24.6"
+    "zod-to-json-schema": "^3.25.0"
   },
   "dependencies": {
     "@anthropic-ai/sdk": "^0.39.0",
@@ -120,6 +120,7 @@
     "openai": "4.104.0",
     "openapi-json-schema": "^2.0.0",
     "uuid": "^9.0.1",
-    "zod": "^3.25.34"
+    "zod": "4.2.1",
+    "zod-to-json-schema": "^3.25.0"
   }
 }

packages/proxy/schema/audio.ts

@@ -1,4 +1,4 @@
-import { z } from "zod";
+import { z } from "zod/v3";
 
 export const mp3BitrateSchema = z.union([
   z.literal(8),

packages/proxy/schema/index.ts

@@ -1,4 +1,4 @@
-import { z } from "zod";
+import { z } from "zod/v3";
 import type {
   AnyModelParamsType as AnyModelParam,
   ChatCompletionMessageParamType as Message,

packages/proxy/schema/models.test.ts

@@ -2,7 +2,7 @@ import { expect } from "vitest";
 import { it } from "vitest";
 import raw_models from "./model_list.json";
 import { ModelSchema } from "./models";
-import { z } from "zod";
+import { z } from "zod/v3";
 
 it("parse model list", () => {
   const models = z.record(z.unknown()).parse(raw_models);

packages/proxy/schema/models.ts

@@ -1,4 +1,4 @@
-import { z } from "zod";
+import { z } from "zod/v3";
 import { _urljoin } from "../src/util";
 
 export const PromptInputs = ["chat", "completion"] as const;

packages/proxy/schema/openai-realtime.ts

@@ -1,4 +1,4 @@
-import { z } from "zod";
+import { z } from "zod/v3";
 
 // Type definitions adapted from:
 // https://github.com/openai/openai-realtime-api-beta/blob/0126e4bfc19901598c3f20d0a4b32bb3e0bea376/lib/client.js

packages/proxy/schema/secrets.ts

@@ -1,4 +1,4 @@
-import { z } from "zod";
+import { z } from "zod/v3";
 import { ModelSchema } from "./models";
 
 export const BaseMetadataSchema = z

packages/proxy/scripts/sync_models.ts

@@ -1,7 +1,7 @@
 import fs from "fs";
 import https from "https";
 import path from "path";
-import { z } from "zod";
+import { z } from "zod/v3";
 import yargs from "yargs";
 import { hideBin } from "yargs/helpers";
 import { exec, spawn } from "child_process";

packages/proxy/src/generated_types.ts

@@ -1,6 +1,6 @@
 // Auto-generated file (internal git SHA e6490ffb3d42f5dbc59d748bb5016f6d8f11cac2) -- do not modify
 
-import { z } from "zod";
+import { z } from "zod/v3";
 
 export const AclObjectType = z.union([
   z.enum([

packages/proxy/src/providers/anthropic.ts

@@ -31,7 +31,7 @@ import { ModelSpec } from "@schema";
 import { getBudgetMultiplier } from "utils";
 import { cleanOpenAIParams } from "utils/openai";
 import { v4 as uuidv4 } from "uuid";
-import { z } from "zod";
+import { z } from "zod/v3";
 import { getTimestampInSeconds, isEmpty, isObject } from "../util";
 import { convertMediaToBase64 } from "./util";
 

packages/proxy/src/providers/azure.ts

@@ -1,4 +1,4 @@
-import { z } from "zod";
+import { z } from "zod/v3";
 import { AzureEntraSecretSchema } from "@braintrust/proxy/schema";
 
 const azureEntraResponseSchema = z.union([

packages/proxy/src/providers/bedrock.ts

@@ -36,7 +36,7 @@ import {
   ChatCompletionToolMessageParam,
 } from "openai/resources/chat/completions";
 import { v4 as uuidv4 } from "uuid";
-import { z } from "zod";
+import { z } from "zod/v3";
 import {
   getTimestampInSeconds,
   isEmpty,

packages/proxy/src/providers/databricks.ts

@@ -1,4 +1,4 @@
-import { z } from "zod";
+import { z } from "zod/v3";
 import { DatabricksOAuthSecretSchema } from "@braintrust/proxy/schema";
 
 const databricksOAuthResponseSchema = z.union([

packages/proxy/src/providers/google.test.ts

@@ -16,7 +16,7 @@ import {
   googleEventToOpenAIChatEvent,
 } from "./google";
 import { zodToJsonSchema } from "zod-to-json-schema";
-import { z } from "zod";
+import { z } from "zod/v3";
 import { IMAGE_DATA_URL, PDF_DATA_URL } from "./fixtures";
 
 // Integration tests that actually call the Google API

packages/proxy/src/proxy.ts

@@ -65,7 +65,7 @@ import {
   parseOpenAIStream,
   verifyTempCredentials,
 } from "utils";
-import { z } from "zod";
+import { z } from "zod/v3";
 import { nowMs } from "./metrics";
 import {
   anthropicCompletionToOpenAICompletion,

packages/proxy/types/anthropic.ts

@@ -1,5 +1,5 @@
 import { AttachmentReference as attachmentReferenceSchema } from "../src/generated_types";
-import { z } from "zod";
+import { z } from "zod/v3";
 
 const cacheControlSchema = z.object({
   type: z.enum(["ephemeral"]),

packages/proxy/types/google.ts

@@ -1,5 +1,5 @@
 import { AttachmentReference } from "@lib/generated_types";
-import { z } from "zod";
+import { z } from "zod/v3";
 
 export const finishReasonSchema = z.enum([
   "FINISH_REASON_UNSPECIFIED",

packages/proxy/types/openai.ts

@@ -1,6 +1,6 @@
 import { ChatCompletionMessageParam as chatCompletionMessageParamSchema } from "../src/generated_types";
 
-import { z } from "zod";
+import { z } from "zod/v3";
 
 import {
   ChatCompletion,

packages/proxy/utils/encrypt.ts

@@ -1,4 +1,4 @@
-import { z } from "zod";
+import { z } from "zod/v3";
 
 let _issuedCryptoSubtleWarning = false;
 function issueCryptoSubtleWarning() {