diff --git a/languageserver/src/context-providers.test.ts b/languageserver/src/context-providers.test.ts
new file mode 100644
index 0000000..59f948e
--- /dev/null
+++ b/languageserver/src/context-providers.test.ts
@@ -0,0 +1,76 @@
+import {data, DescriptionDictionary} from "@actions/expressions";
+import {WorkflowContext} from "@actions/languageservice/context/workflow-context";
+import {Mode} from "@actions/languageservice/context-providers/default";
+import {contextProviders} from "./context-providers";
+import {RepositoryContext} from "./initializationOptions";
+import {TTLCache} from "./utils/cache";
+
+describe("contextProviders", () => {
+  const mockCache = new TTLCache();
+  const mockRepo: RepositoryContext = {
+    id: 123,
+    owner: "test-owner",
+    name: "test-repo",
+    organizationOwned: true,
+    workspaceUri: "file:///workspace"
+  };
+  const mockWorkflowContext: WorkflowContext = {
+    uri: "test.yaml",
+    template: undefined
+  };
+
+  describe("when client is undefined", () => {
+    it("should return incomplete context for secrets", async () => {
+      const config = contextProviders(undefined, mockRepo, mockCache);
+      const result = await config.getContext("secrets", undefined, mockWorkflowContext, Mode.Validation);
+
+      expect(result).toBeInstanceOf(DescriptionDictionary);
+      expect((result as DescriptionDictionary).complete).toBe(false);
+    });
+
+    it("should return incomplete context for vars", async () => {
+      const config = contextProviders(undefined, mockRepo, mockCache);
+      const result = await config.getContext("vars", undefined, mockWorkflowContext, Mode.Validation);
+
+      expect(result).toBeInstanceOf(DescriptionDictionary);
+      expect((result as DescriptionDictionary).complete).toBe(false);
+    });
+
+    it("should preserve defaultContext and mark as incomplete for secrets", async () => {
+      const config = contextProviders(undefined, mockRepo, mockCache);
+      const defaultContext = new DescriptionDictionary();
+      defaultContext.add("EXISTING_SECRET", new data.StringData("test"));
+
+      const result = await config.getContext("secrets", defaultContext, mockWorkflowContext, Mode.Validation);
+
+      expect(result).toBe(defaultContext);
+      expect((result as DescriptionDictionary).complete).toBe(false);
+      expect((result as DescriptionDictionary).get("EXISTING_SECRET")).toBeDefined();
+    });
+
+    it("should return undefined for other contexts like steps", async () => {
+      const config = contextProviders(undefined, mockRepo, mockCache);
+      const result = await config.getContext("steps", undefined, mockWorkflowContext, Mode.Validation);
+
+      expect(result).toBeUndefined();
+    });
+  });
+
+  describe("when both client and repo are undefined", () => {
+    it("should return incomplete context for secrets", async () => {
+      const config = contextProviders(undefined, undefined, mockCache);
+      const result = await config.getContext("secrets", undefined, mockWorkflowContext, Mode.Validation);
+
+      expect(result).toBeInstanceOf(DescriptionDictionary);
+      expect((result as DescriptionDictionary).complete).toBe(false);
+    });
+
+    it("should return incomplete context for vars", async () => {
+      const config = contextProviders(undefined, undefined, mockCache);
+      const result = await config.getContext("vars", undefined, mockWorkflowContext, Mode.Validation);
+
+      expect(result).toBeInstanceOf(DescriptionDictionary);
+      expect((result as DescriptionDictionary).complete).toBe(false);
+    });
+  });
+});
diff --git a/languageserver/src/context-providers.ts b/languageserver/src/context-providers.ts
index 243baf7..4ae90ef 100644
--- a/languageserver/src/context-providers.ts
+++ b/languageserver/src/context-providers.ts
@@ -15,7 +15,18 @@ export function contextProviders(
   cache: TTLCache
 ): ContextProviderConfig {
   if (!repo || !client) {
-    return {getContext: () => Promise.resolve(undefined)};
+    // When GitHub client/repo is unavailable, return an incomplete dictionary
+    // to avoid false "Context access might be invalid" warnings
+    return {
+      getContext: (name: string, defaultContext: DescriptionDictionary | undefined) => {
+        if (name === "secrets" || name === "vars") {
+          const context = defaultContext || new DescriptionDictionary();
+          context.complete = false;
+          return Promise.resolve(context);
+        }
+        return Promise.resolve(undefined);
+      }
+    };
   }
 
   const getContext = async (
diff --git a/languageservice/src/context-providers/default.test.ts b/languageservice/src/context-providers/default.test.ts
new file mode 100644
index 0000000..7557837
--- /dev/null
+++ b/languageservice/src/context-providers/default.test.ts
@@ -0,0 +1,97 @@
+import {DescriptionDictionary} from "@actions/expressions";
+import {WorkflowContext} from "../context/workflow-context";
+import {getContext, Mode} from "./default";
+
+describe("getContext", () => {
+  const emptyWorkflowContext: WorkflowContext = {
+    uri: "test.yaml",
+    template: undefined
+  };
+
+  describe("when no contextProviderConfig is provided", () => {
+    it("should mark secrets context as incomplete", async () => {
+      const result = await getContext(["secrets"], undefined, emptyWorkflowContext, Mode.Validation);
+
+      const secretsContext = result.get("secrets") as DescriptionDictionary;
+      expect(secretsContext).toBeDefined();
+      expect(secretsContext.complete).toBe(false);
+    });
+
+    it("should mark vars context as incomplete", async () => {
+      const result = await getContext(["vars"], undefined, emptyWorkflowContext, Mode.Validation);
+
+      const varsContext = result.get("vars") as DescriptionDictionary;
+      expect(varsContext).toBeDefined();
+      expect(varsContext.complete).toBe(false);
+    });
+
+    it("should not mark other contexts as incomplete", async () => {
+      const result = await getContext(["env", "github"], undefined, emptyWorkflowContext, Mode.Validation);
+
+      const envContext = result.get("env") as DescriptionDictionary;
+      const githubContext = result.get("github") as DescriptionDictionary;
+
+      // These contexts are derived from the workflow file, so they can be complete
+      expect(envContext).toBeDefined();
+      expect(envContext.complete).toBe(true);
+      expect(githubContext).toBeDefined();
+      expect(githubContext.complete).toBe(true);
+    });
+  });
+
+  describe("when contextProviderConfig returns a value", () => {
+    it("should use the provided context for secrets", async () => {
+      const providedContext = new DescriptionDictionary();
+      providedContext.complete = true; // Provider fetched from API, so it's complete
+
+      const config = {
+        getContext: () => Promise.resolve(providedContext)
+      };
+
+      const result = await getContext(["secrets"], config, emptyWorkflowContext, Mode.Validation);
+
+      const secretsContext = result.get("secrets");
+      expect(secretsContext).toBe(providedContext);
+      expect((secretsContext as DescriptionDictionary).complete).toBe(true);
+    });
+
+    it("should use the provided context for vars", async () => {
+      const providedContext = new DescriptionDictionary();
+      providedContext.complete = true;
+
+      const config = {
+        getContext: () => Promise.resolve(providedContext)
+      };
+
+      const result = await getContext(["vars"], config, emptyWorkflowContext, Mode.Validation);
+
+      const varsContext = result.get("vars");
+      expect(varsContext).toBe(providedContext);
+      expect((varsContext as DescriptionDictionary).complete).toBe(true);
+    });
+  });
+
+  describe("when contextProviderConfig returns undefined", () => {
+    it("should mark secrets as incomplete", async () => {
+      const config = {
+        getContext: () => Promise.resolve(undefined)
+      };
+
+      const result = await getContext(["secrets"], config, emptyWorkflowContext, Mode.Validation);
+
+      const secretsContext = result.get("secrets") as DescriptionDictionary;
+      expect(secretsContext.complete).toBe(false);
+    });
+
+    it("should mark vars as incomplete", async () => {
+      const config = {
+        getContext: () => Promise.resolve(undefined)
+      };
+
+      const result = await getContext(["vars"], config, emptyWorkflowContext, Mode.Validation);
+
+      const varsContext = result.get("vars") as DescriptionDictionary;
+      expect(varsContext.complete).toBe(false);
+    });
+  });
+});
diff --git a/languageservice/src/context-providers/default.ts b/languageservice/src/context-providers/default.ts
index 7c2ddf3..0b59dec 100644
--- a/languageservice/src/context-providers/default.ts
+++ b/languageservice/src/context-providers/default.ts
@@ -40,7 +40,15 @@ export async function getContext(
       continue;
     }
 
-    value = (await config?.getContext(contextName, value, workflowContext, mode)) || value;
+    const remoteValue = await config?.getContext(contextName, value, workflowContext, mode);
+    if (remoteValue) {
+      value = remoteValue;
+    } else if (contextName === "secrets" || contextName === "vars") {
+      // Without a context provider to fetch remote secrets/vars, we can't know
+      // what values exist, so mark the context as incomplete to avoid false
+      // "Context access might be invalid" warnings
+      value.complete = false;
+    }
 
     context.add(contextName, value, getDescription(RootContext, contextName));
   }
diff --git a/languageservice/src/validate.incomplete-context.test.ts b/languageservice/src/validate.incomplete-context.test.ts
new file mode 100644
index 0000000..f118528
--- /dev/null
+++ b/languageservice/src/validate.incomplete-context.test.ts
@@ -0,0 +1,152 @@
+/**
+ * Test validation behavior when no context providers are configured.
+ *
+ * When contextProviderConfig is not provided (or returns incomplete data),
+ * we should skip validation for secrets/vars rather than showing false
+ * positive "Context access might be invalid" warnings.
+ *
+ * This is important for offline/disconnected scenarios where API calls
+ * to fetch secrets/vars are not possible.
+ */
+
+import {validate} from "./validate";
+import {createDocument} from "./test-utils/document";
+import {clearCache} from "./utils/workflow-cache";
+
+beforeEach(() => {
+  clearCache();
+});
+
+describe("validation without context providers", () => {
+  describe("secrets context", () => {
+    it("should not warn on secrets.GITHUB_TOKEN", async () => {
+      const doc = createDocument(
+        "wf.yaml",
+        `
+on: push
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo "test"
+        env:
+          GH_TOKEN: \${{ secrets.GITHUB_TOKEN }}
+`
+      );
+      const result = await validate(doc);
+      expect(result).toEqual([]);
+    });
+
+    it("should not warn on custom secrets when no provider configured", async () => {
+      const doc = createDocument(
+        "wf.yaml",
+        `
+on: push
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo "test"
+        env:
+          API_KEY: \${{ secrets.MY_API_KEY }}
+`
+      );
+      const result = await validate(doc);
+      expect(result).toEqual([]);
+    });
+
+    it("should not warn on secrets with environment", async () => {
+      const doc = createDocument(
+        "wf.yaml",
+        `
+on: push
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    environment: production
+    steps:
+      - run: echo "test"
+        env:
+          API_KEY: \${{ secrets.API_KEY }}
+`
+      );
+      const result = await validate(doc);
+      expect(result).toEqual([]);
+    });
+  });
+
+  describe("vars context", () => {
+    it("should not warn on vars when no provider configured", async () => {
+      const doc = createDocument(
+        "wf.yaml",
+        `
+on: push
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo "\${{ vars.ENVIRONMENT }}"
+`
+      );
+      const result = await validate(doc);
+      expect(result).toEqual([]);
+    });
+
+    it("should not warn on vars with environment", async () => {
+      const doc = createDocument(
+        "wf.yaml",
+        `
+on: push
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    environment: production
+    steps:
+      - run: echo "\${{ vars.API_URL }}"
+`
+      );
+      const result = await validate(doc);
+      expect(result).toEqual([]);
+    });
+
+    it("should not warn on vars with fallback pattern", async () => {
+      const doc = createDocument(
+        "wf.yaml",
+        `
+on: push
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo "\${{ vars.OPTIONAL_VAR || 'default-value' }}"
+`
+      );
+      const result = await validate(doc);
+      expect(result).toEqual([]);
+    });
+  });
+
+  describe("combined secrets and vars", () => {
+    it("should not warn on workflow using both secrets and vars", async () => {
+      const doc = createDocument(
+        "wf.yaml",
+        `
+on: push
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    environment: production
+    steps:
+      - run: |
+          echo "Deploying to \${{ vars.API_URL }}"
+          echo "Using region \${{ vars.AWS_REGION }}"
+        env:
+          API_KEY: \${{ secrets.API_KEY }}
+          AWS_SECRET: \${{ secrets.AWS_SECRET_ACCESS_KEY }}
+`
+      );
+      const result = await validate(doc);
+      expect(result).toEqual([]);
+    });
+  });
+});