diff --git a/src/agents/model-auth-env-vars.ts b/src/agents/model-auth-env-vars.ts
index dd6620e21ee..1f401ccc250 100644
--- a/src/agents/model-auth-env-vars.ts
+++ b/src/agents/model-auth-env-vars.ts
@@ -20,6 +20,14 @@ export function resolveProviderEnvAuthEvidence(
   return resolveProviderAuthEvidence(params);
 }
 
+export function resolveProviderEnvAuthLookupKeys(params?: ProviderEnvVarLookupParams): string[] {
+  const envCandidateMap = resolveProviderEnvApiKeyCandidates(params);
+  const authEvidenceMap = resolveProviderEnvAuthEvidence(params);
+  return Array.from(
+    new Set([...Object.keys(envCandidateMap), ...Object.keys(authEvidenceMap)]),
+  ).toSorted((a, b) => a.localeCompare(b));
+}
+
 export const PROVIDER_ENV_API_KEY_CANDIDATES = resolveProviderEnvApiKeyCandidates();
 
 export function listKnownProviderEnvApiKeyNames(): string[] {
diff --git a/src/agents/pi-auth-discovery-core.ts b/src/agents/pi-auth-discovery-core.ts
index 4b5499a45a7..ff274deb1de 100644
--- a/src/agents/pi-auth-discovery-core.ts
+++ b/src/agents/pi-auth-discovery-core.ts
@@ -1,22 +1,46 @@
 import fs from "node:fs";
+import type { OpenClawConfig } from "../config/types.openclaw.js";
 import { isRecord } from "../utils.js";
-import { resolveProviderEnvApiKeyCandidates } from "./model-auth-env-vars.js";
+import {
+  resolveProviderEnvApiKeyCandidates,
+  resolveProviderEnvAuthEvidence,
+  resolveProviderEnvAuthLookupKeys,
+} from "./model-auth-env-vars.js";
 import { resolveEnvApiKey } from "./model-auth-env.js";
 import type { PiCredentialMap } from "./pi-auth-credentials.js";
 
+export type PiDiscoveryAuthLookupOptions = {
+  config?: OpenClawConfig;
+  workspaceDir?: string;
+  env?: NodeJS.ProcessEnv;
+};
+
 export function addEnvBackedPiCredentials(
   credentials: PiCredentialMap,
-  env: NodeJS.ProcessEnv = process.env,
+  options: PiDiscoveryAuthLookupOptions = {},
 ): PiCredentialMap {
+  const env = options.env ?? process.env;
+  const lookupParams = {
+    config: options.config,
+    workspaceDir: options.workspaceDir,
+    env,
+  };
+  const candidateMap = resolveProviderEnvApiKeyCandidates(lookupParams);
+  const authEvidenceMap = resolveProviderEnvAuthEvidence(lookupParams);
   const next = { ...credentials };
   // pi-coding-agent hides providers from its registry when auth storage lacks
   // a matching credential entry. Mirror env-backed provider auth here so
   // live/model discovery sees the same providers runtime auth can use.
-  for (const provider of Object.keys(resolveProviderEnvApiKeyCandidates({ env }))) {
+  for (const provider of resolveProviderEnvAuthLookupKeys(lookupParams)) {
     if (next[provider]) {
       continue;
     }
-    const resolved = resolveEnvApiKey(provider, env);
+    const resolved = resolveEnvApiKey(provider, env, {
+      config: options.config,
+      workspaceDir: options.workspaceDir,
+      candidateMap,
+      authEvidenceMap,
+    });
     if (!resolved?.apiKey) {
       continue;
     }
diff --git a/src/agents/pi-auth-discovery.ts b/src/agents/pi-auth-discovery.ts
index fe567c027ed..a5993123db7 100644
--- a/src/agents/pi-auth-discovery.ts
+++ b/src/agents/pi-auth-discovery.ts
@@ -5,12 +5,15 @@ import {
   loadAuthProfileStoreForSecretsRuntime,
 } from "./auth-profiles/store.js";
 import { resolvePiCredentialMapFromStore, type PiCredentialMap } from "./pi-auth-credentials.js";
-import { addEnvBackedPiCredentials } from "./pi-auth-discovery-core.js";
+import {
+  addEnvBackedPiCredentials,
+  type PiDiscoveryAuthLookupOptions,
+} from "./pi-auth-discovery-core.js";
 
 export type DiscoverAuthStorageOptions = {
   readOnly?: boolean;
   skipCredentials?: boolean;
-};
+} & PiDiscoveryAuthLookupOptions;
 
 export function resolvePiCredentialsForDiscovery(
   agentDir: string,
@@ -20,7 +23,11 @@ export function resolvePiCredentialsForDiscovery(
     options?.readOnly === true
       ? loadAuthProfileStoreForSecretsRuntime(agentDir)
       : ensureAuthProfileStore(agentDir, { allowKeychainPrompt: false });
-  const credentials = addEnvBackedPiCredentials(resolvePiCredentialMapFromStore(store));
+  const credentials = addEnvBackedPiCredentials(resolvePiCredentialMapFromStore(store), {
+    config: options?.config,
+    workspaceDir: options?.workspaceDir,
+    env: options?.env,
+  });
   for (const provider of resolveRuntimeSyntheticAuthProviderRefs()) {
     if (credentials[provider]) {
       continue;
diff --git a/src/agents/pi-model-discovery.auth.test.ts b/src/agents/pi-model-discovery.auth.test.ts
index 7e656167601..43b1ca68545 100644
--- a/src/agents/pi-model-discovery.auth.test.ts
+++ b/src/agents/pi-model-discovery.auth.test.ts
@@ -12,14 +12,34 @@ vi.mock("./model-auth-env-vars.js", () => ({
   resolveProviderEnvApiKeyCandidates: () => ({
     mistral: ["MISTRAL_API_KEY"],
   }),
+  resolveProviderEnvAuthEvidence: () => ({
+    "workspace-cloud": [
+      {
+        type: "local-file-with-env",
+        credentialMarker: "workspace-cloud-local-credentials",
+        source: "workspace cloud credentials",
+      },
+    ],
+  }),
+  resolveProviderEnvAuthLookupKeys: () => ["mistral", "workspace-cloud"],
 }));
 
 vi.mock("./model-auth-env.js", () => ({
-  resolveEnvApiKey: (provider: string, env: NodeJS.ProcessEnv) => {
-    if (provider !== "mistral" || !env.MISTRAL_API_KEY?.trim()) {
-      return null;
+  resolveEnvApiKey: (
+    provider: string,
+    env: NodeJS.ProcessEnv,
+    options?: { workspaceDir?: string },
+  ) => {
+    if (provider === "mistral" && env.MISTRAL_API_KEY?.trim()) {
+      return { apiKey: env.MISTRAL_API_KEY, source: "env: MISTRAL_API_KEY" };
     }
-    return { apiKey: env.MISTRAL_API_KEY, source: "env: MISTRAL_API_KEY" };
+    if (provider === "workspace-cloud" && options?.workspaceDir === "/tmp/workspace") {
+      return {
+        apiKey: "workspace-cloud-local-credentials",
+        source: "workspace cloud credentials",
+      };
+    }
+    return null;
   },
 }));
 
@@ -144,7 +164,7 @@ describe("discoverAuthStorage", () => {
     delete process.env.OPENCLAW_BUNDLED_PLUGINS_DIR;
     delete process.env.OPENCLAW_DISABLE_BUNDLED_PLUGINS;
     try {
-      const credentials = addEnvBackedPiCredentials({}, process.env);
+      const credentials = addEnvBackedPiCredentials({}, { env: process.env });
 
       expect(credentials.mistral).toEqual({
         type: "api_key",
@@ -168,4 +188,19 @@ describe("discoverAuthStorage", () => {
       }
     }
   });
+
+  it("includes workspace-scoped auth evidence in pi discovery credentials", () => {
+    const credentials = addEnvBackedPiCredentials(
+      {},
+      {
+        env: {},
+        workspaceDir: "/tmp/workspace",
+      },
+    );
+
+    expect(credentials["workspace-cloud"]).toEqual({
+      type: "api_key",
+      key: "workspace-cloud-local-credentials",
+    });
+  });
 });