diff --git a/expressions/src/features.test.ts b/expressions/src/features.test.ts
index 0ff1de7..dcb029f 100644
--- a/expressions/src/features.test.ts
+++ b/expressions/src/features.test.ts
@@ -55,7 +55,8 @@ describe("FeatureFlags", () => {
         "missingInputsQuickfix",
         "blockScalarChompingWarning",
         "allowCaseFunction",
-        "allowCronTimezone"
+        "allowCronTimezone",
+        "allowCopilotRequestsPermission"
       ]);
     });
   });
diff --git a/expressions/src/features.ts b/expressions/src/features.ts
index 163629c..c2bcdd5 100644
--- a/expressions/src/features.ts
+++ b/expressions/src/features.ts
@@ -40,6 +40,12 @@ export interface ExperimentalFeatures {
    * @default false
    */
   allowCronTimezone?: boolean;
+
+  /**
+   * Enable the copilot-requests permission in workflow permissions.
+   * @default false
+   */
+  allowCopilotRequestsPermission?: boolean;
 }
 
 /**
@@ -55,7 +61,8 @@ const allFeatureKeys: ExperimentalFeatureKey[] = [
   "missingInputsQuickfix",
   "blockScalarChompingWarning",
   "allowCaseFunction",
-  "allowCronTimezone"
+  "allowCronTimezone",
+  "allowCopilotRequestsPermission"
 ];
 
 export class FeatureFlags {
diff --git a/languageservice/src/complete.test.ts b/languageservice/src/complete.test.ts
index aa7384b..b33ad66 100644
--- a/languageservice/src/complete.test.ts
+++ b/languageservice/src/complete.test.ts
@@ -967,3 +967,79 @@ describe("schedule timezone completion", () => {
     expect(labels).not.toContain("timezone");
   });
 });
+
+describe("permissions copilot-requests completion", () => {
+  it("includes copilot-requests when allowCopilotRequestsPermission is enabled", async () => {
+    const input = `on: push
+permissions:
+  |`;
+    const result = await complete(...getPositionFromCursor(input), {
+      featureFlags: new FeatureFlags({allowCopilotRequestsPermission: true})
+    });
+
+    expect(result).not.toBeUndefined();
+    const labels = result.map(x => x.label);
+    expect(labels).toContain("actions");
+    expect(labels).toContain("copilot-requests");
+  });
+
+  it("excludes copilot-requests when allowCopilotRequestsPermission is disabled", async () => {
+    const input = `on: push
+permissions:
+  |`;
+    const result = await complete(...getPositionFromCursor(input), {
+      featureFlags: new FeatureFlags({allowCopilotRequestsPermission: false})
+    });
+
+    expect(result).not.toBeUndefined();
+    const labels = result.map(x => x.label);
+    expect(labels).toContain("actions");
+    expect(labels).not.toContain("copilot-requests");
+  });
+
+  it("excludes copilot-requests when no feature flags are provided", async () => {
+    const input = `on: push
+permissions:
+  |`;
+    const result = await complete(...getPositionFromCursor(input));
+
+    expect(result).not.toBeUndefined();
+    const labels = result.map(x => x.label);
+    expect(labels).toContain("actions");
+    expect(labels).not.toContain("copilot-requests");
+  });
+
+  it("includes copilot-requests in job-level permissions when allowCopilotRequestsPermission is enabled", async () => {
+    const input = `on: push
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      |`;
+    const result = await complete(...getPositionFromCursor(input), {
+      featureFlags: new FeatureFlags({allowCopilotRequestsPermission: true})
+    });
+
+    expect(result).not.toBeUndefined();
+    const labels = result.map(x => x.label);
+    expect(labels).toContain("actions");
+    expect(labels).toContain("copilot-requests");
+  });
+
+  it("excludes copilot-requests from job-level permissions when allowCopilotRequestsPermission is disabled", async () => {
+    const input = `on: push
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      |`;
+    const result = await complete(...getPositionFromCursor(input), {
+      featureFlags: new FeatureFlags({allowCopilotRequestsPermission: false})
+    });
+
+    expect(result).not.toBeUndefined();
+    const labels = result.map(x => x.label);
+    expect(labels).toContain("actions");
+    expect(labels).not.toContain("copilot-requests");
+  });
+});
diff --git a/languageservice/src/complete.ts b/languageservice/src/complete.ts
index a861c75..650ff1b 100644
--- a/languageservice/src/complete.ts
+++ b/languageservice/src/complete.ts
@@ -168,6 +168,14 @@ export async function complete(
     values = values.filter(v => v.label !== "timezone");
   }
 
+  // Filter `copilot-requests` from permissions completions when the feature flag is disabled
+  if (
+    !config?.featureFlags?.isEnabled("allowCopilotRequestsPermission") &&
+    parent?.definition?.key === "permissions-mapping"
+  ) {
+    values = values.filter(v => v.label !== "copilot-requests");
+  }
+
   // Offer "(switch to list)" / "(switch to mapping)" when the schema allows alternative forms
   const escapeHatches = getEscapeHatchCompletions(token, keyToken, indentString, newPos, schema);
   values.push(...escapeHatches);
diff --git a/workflow-parser/src/workflow-v1.0.json b/workflow-parser/src/workflow-v1.0.json
index cd63c12..1b7e214 100644
--- a/workflow-parser/src/workflow-v1.0.json
+++ b/workflow-parser/src/workflow-v1.0.json
@@ -1602,6 +1602,10 @@
             "type": "permission-level-any",
             "description": "Repository contents, commits, branches, downloads, releases, and merges."
           },
+          "copilot-requests": {
+            "type": "permission-level-write-or-no-access",
+            "description": "GitHub Copilot requests."
+          },
           "deployments": {
             "type": "permission-level-any",
             "description": "Deployments and deployment statuses."