diff --git a/packages/adapters/opencode-local/src/server/execute.remote.test.ts b/packages/adapters/opencode-local/src/server/execute.remote.test.ts
index dab6280423..d3934ad921 100644
--- a/packages/adapters/opencode-local/src/server/execute.remote.test.ts
+++ b/packages/adapters/opencode-local/src/server/execute.remote.test.ts
@@ -104,12 +104,16 @@ describe("opencode remote execution", () => {
   const cleanupDirs: string[] = [];
   const originalOpenCodeAllowAllModels = process.env.OPENCODE_ALLOW_ALL_MODELS;
 
-  beforeEach(() => {
+  beforeEach(async () => {
+    const configHome = await mkdtemp(path.join(os.tmpdir(), "paperclip-opencode-test-config-"));
+    cleanupDirs.push(configHome);
+    vi.stubEnv("XDG_CONFIG_HOME", configHome);
     delete process.env.OPENCODE_ALLOW_ALL_MODELS;
   });
 
   afterEach(async () => {
     vi.clearAllMocks();
+    vi.unstubAllEnvs();
     if (originalOpenCodeAllowAllModels === undefined) {
       delete process.env.OPENCODE_ALLOW_ALL_MODELS;
     } else {
diff --git a/packages/adapters/opencode-local/src/server/execute.test.ts b/packages/adapters/opencode-local/src/server/execute.test.ts
index 5158d98bac..f3884026d5 100644
--- a/packages/adapters/opencode-local/src/server/execute.test.ts
+++ b/packages/adapters/opencode-local/src/server/execute.test.ts
@@ -34,6 +34,18 @@ function probeResult(overrides: Record<string, unknown>) {
 }
 
 describe("OpenCode local skill injection", () => {
+  let configHome: string;
+
+  beforeEach(async () => {
+    configHome = await fs.mkdtemp(path.join(os.tmpdir(), "paperclip-opencode-test-config-"));
+    vi.stubEnv("XDG_CONFIG_HOME", configHome);
+  });
+
+  afterEach(async () => {
+    vi.unstubAllEnvs();
+    await fs.rm(configHome, { recursive: true, force: true });
+  });
+
   it("injects runtime skills into the configured child HOME", async () => {
     const root = await fs.mkdtemp(path.join(os.tmpdir(), "paperclip-opencode-configured-home-"));
     const processHome = path.join(root, "process-home");
diff --git a/packages/adapters/opencode-local/src/server/test.remote.test.ts b/packages/adapters/opencode-local/src/server/test.remote.test.ts
index f089ceb061..2339baf6b1 100644
--- a/packages/adapters/opencode-local/src/server/test.remote.test.ts
+++ b/packages/adapters/opencode-local/src/server/test.remote.test.ts
@@ -1,4 +1,7 @@
-import { afterEach, describe, expect, it, vi } from "vitest";
+import { mkdtemp, rm } from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 import type { AdapterExecutionTarget } from "@paperclipai/adapter-utils/execution-target";
 
 const {
@@ -71,8 +74,17 @@ vi.mock("@paperclipai/adapter-utils/execution-target", async () => {
 import { testEnvironment } from "./test.js";
 
 describe("opencode remote environment diagnostics", () => {
-  afterEach(() => {
+  let configHome: string;
+
+  beforeEach(async () => {
+    configHome = await mkdtemp(path.join(os.tmpdir(), "paperclip-opencode-test-config-"));
+    vi.stubEnv("XDG_CONFIG_HOME", configHome);
+  });
+
+  afterEach(async () => {
     vi.clearAllMocks();
+    vi.unstubAllEnvs();
+    await rm(configHome, { recursive: true, force: true });
   });
 
   it("stages remote runtime config assets for sandbox hello probes", async () => {