diff --git a/packages/opencode/src/provider/auth.ts b/packages/opencode/src/provider/auth.ts
index ddfe5a347d..e1123a9c44 100644
--- a/packages/opencode/src/provider/auth.ts
+++ b/packages/opencode/src/provider/auth.ts
@@ -99,7 +99,7 @@ export namespace ProviderAuth {
   type Hook = NonNullable<Hooks["auth"]>
 
   export interface Interface {
-    readonly methods: () => Effect.Effect<Record<ProviderID, Method[]>>
+    readonly methods: () => Effect.Effect<Record<ProviderID, ReadonlyArray<Method>>>
     readonly authorize: (input: {
       providerID: ProviderID
       method: number
@@ -138,9 +138,9 @@ export namespace ProviderAuth {
 
       const methods = Effect.fn("ProviderAuth.methods")(function* () {
         const hooks = (yield* InstanceState.get(state)).hooks
-        return Record.map(hooks, (item) =>
-          item.methods.map(
-            (method): Method => ({
+        return Schema.decodeUnknownSync(Methods)(
+          Record.map(hooks, (item) =>
+            item.methods.map((method) => ({
               type: method.type,
               label: method.label,
               prompts: method.prompts?.map((prompt) => {
@@ -161,7 +161,7 @@ export namespace ProviderAuth {
                   when: prompt.when,
                 }
               }),
-            }),
+            })),
           ),
         )
       })
diff --git a/packages/opencode/src/server/instance/httpapi/provider.ts b/packages/opencode/src/server/instance/httpapi/provider.ts
index 452557401d..c9770400bc 100644
--- a/packages/opencode/src/server/instance/httpapi/provider.ts
+++ b/packages/opencode/src/server/instance/httpapi/provider.ts
@@ -2,7 +2,7 @@ import { AppLayer } from "@/effect/app-runtime"
 import { memoMap } from "@/effect/run-service"
 import { ProviderAuth } from "@/provider/auth"
 import { lazy } from "@/util/lazy"
-import { Effect, Layer, Schema } from "effect"
+import { Effect, Layer } from "effect"
 import { HttpRouter, HttpServer } from "effect/unstable/http"
 import { HttpApi, HttpApiBuilder, HttpApiEndpoint, HttpApiGroup, OpenApi } from "effect/unstable/httpapi"
 import type { Handler } from "hono"
@@ -40,7 +40,7 @@ const Api = HttpApi.make("provider")
 
 const auth = Effect.fn("ProviderHttpApi.auth")(function* () {
   const svc = yield* ProviderAuth.Service
-  return Schema.decodeUnknownSync(ProviderAuth.Methods)(yield* svc.methods())
+  return yield* svc.methods()
 })
 
 const ProviderLive = HttpApiBuilder.group(Api, "provider", (handlers) => handlers.handle("auth", auth))
diff --git a/packages/opencode/test/server/provider-httpapi-auth.test.ts b/packages/opencode/test/server/provider-httpapi-auth.test.ts
index 459cfc133e..1f50f831de 100644
--- a/packages/opencode/test/server/provider-httpapi-auth.test.ts
+++ b/packages/opencode/test/server/provider-httpapi-auth.test.ts
@@ -1,12 +1,17 @@
-import { describe, expect, test } from "bun:test"
+import { afterEach, describe, expect, test } from "bun:test"
 import path from "path"
 import fs from "fs/promises"
+import { Instance } from "../../src/project/instance"
 import { Server } from "../../src/server/server"
 import { tmpdir } from "../fixture/fixture"
 import { Log } from "../../src/util/log"
 
 Log.init({ print: false })
 
+afterEach(async () => {
+  await Instance.disposeAll()
+})
+
 describe("experimental provider httpapi", () => {
   test("lists provider auth methods and serves docs", async () => {
     await using tmp = await tmpdir({