feat: add OpenAI Codex provider metadata

packages/core/src/schema.ts

@@ -347,7 +347,7 @@ export type Model = z.infer<typeof Model>;
 export const Provider = z
   .object({
     id: z.string(),
-    env: z.array(z.string()).min(1, "Provider env cannot be empty"),
+    env: z.array(z.string()),
     npm: z.string().min(1, "Provider npm module cannot be empty"),
     api: z.string().optional(),
     name: z.string().min(1, "Provider name cannot be empty"),

packages/core/test/schema.test.ts

@@ -1,7 +1,7 @@
 import { describe, expect, test } from "bun:test";
 import { z } from "zod";
 
-import { AuthoredModel } from "../src/index.js";
+import { AuthoredModel, Provider } from "../src/index.js";
 
 type AuthoredModelData = z.infer<typeof AuthoredModel>;
 
@@ -31,6 +31,22 @@ describe("model schema", () => {
   });
 });
 
+describe("provider schema", () => {
+  test("accepts OAuth-only providers without environment credentials", () => {
+    expect(
+      Provider.safeParse({
+        id: "openai-codex",
+        name: "OpenAI Codex",
+        env: [],
+        npm: "@ai-sdk/openai",
+        api: "https://chatgpt.com/backend-api/codex",
+        doc: "https://github.com/openai/codex",
+        models: {},
+      }).success,
+    ).toBe(true);
+  });
+});
+
 function baseModel(overrides: Partial<AuthoredModelData>) {
   return {
     id: "example/model",

providers/openai-codex/models/gpt-5.5.toml

@@ -0,0 +1,13 @@
+# Codex exposes a 272K usable input window for GPT-5.5. The 400K total keeps
+# the model's separate 128K output allowance explicit.
+# https://github.com/anomalyco/models.dev/issues/3183
+base_model = "openai/gpt-5.5"
+reasoning_options = [{ type = "effort", values = ["none", "low", "medium", "high", "xhigh"] }]
+
+[limit]
+context = 400_000
+input = 272_000
+output = 128_000
+
+[experimental.modes.fast]
+provider = { body = { service_tier = "priority" } }

providers/openai-codex/models/gpt-5.6-luna.toml

@@ -0,0 +1,14 @@
+# OpenAI corrected the Codex GPT-5.6 window to 272K in 0.144.6. The 400K total
+# keeps the model's separate 128K output allowance explicit.
+# https://github.com/openai/codex/releases/tag/rust-v0.144.6
+# https://github.com/openai/codex/blob/rust-v0.145.0/codex-rs/models-manager/models.json
+base_model = "openai/gpt-5.6-luna"
+reasoning_options = [{ type = "effort", values = ["none", "low", "medium", "high", "xhigh", "max"] }]
+
+[limit]
+context = 400_000
+input = 272_000
+output = 128_000
+
+[experimental.modes.fast]
+provider = { body = { service_tier = "priority" } }

providers/openai-codex/models/gpt-5.6-sol.toml

@@ -0,0 +1,14 @@
+# OpenAI corrected the Codex GPT-5.6 window to 272K in 0.144.6. The 400K total
+# keeps the model's separate 128K output allowance explicit.
+# https://github.com/openai/codex/releases/tag/rust-v0.144.6
+# https://github.com/openai/codex/blob/rust-v0.145.0/codex-rs/models-manager/models.json
+base_model = "openai/gpt-5.6-sol"
+reasoning_options = [{ type = "effort", values = ["none", "low", "medium", "high", "xhigh", "max"] }]
+
+[limit]
+context = 400_000
+input = 272_000
+output = 128_000
+
+[experimental.modes.fast]
+provider = { body = { service_tier = "priority" } }

providers/openai-codex/models/gpt-5.6-terra.toml

@@ -0,0 +1,14 @@
+# OpenAI corrected the Codex GPT-5.6 window to 272K in 0.144.6. The 400K total
+# keeps the model's separate 128K output allowance explicit.
+# https://github.com/openai/codex/releases/tag/rust-v0.144.6
+# https://github.com/openai/codex/blob/rust-v0.145.0/codex-rs/models-manager/models.json
+base_model = "openai/gpt-5.6-terra"
+reasoning_options = [{ type = "effort", values = ["none", "low", "medium", "high", "xhigh", "max"] }]
+
+[limit]
+context = 400_000
+input = 272_000
+output = 128_000
+
+[experimental.modes.fast]
+provider = { body = { service_tier = "priority" } }

providers/openai-codex/provider.toml

@@ -0,0 +1,9 @@
+# ChatGPT subscription models served by the Codex backend use limits that differ
+# from direct OpenAI API access. This provider intentionally has no API-key env.
+# https://github.com/openai/codex/releases/tag/rust-v0.144.6
+# https://github.com/openai/codex/blob/rust-v0.145.0/codex-rs/models-manager/models.json
+name = "OpenAI Codex"
+env = []
+npm = "@ai-sdk/openai"
+doc = "https://github.com/openai/codex"
+api = "https://chatgpt.com/backend-api/codex"