diff --git a/packages/shared/src/usageLimits.test.ts b/packages/shared/src/usageLimits.test.ts
index 72a17323386c8..c60f70f93b5eb 100644
--- a/packages/shared/src/usageLimits.test.ts
+++ b/packages/shared/src/usageLimits.test.ts
@@ -132,6 +132,10 @@ describe("new thread model fallback", () => {
     ["antigravity", ["gemini-weekly"], "antigravity-default", true],
     ["opencode", ["go_weekly"], "opencode/big-pickle", false],
     ["opencode", ["go_weekly"], "opencode-go/big-pickle", true],
+    ["claudeAgent", ["seven_day_fable"], "claude-opus-5-5", false],
+    ["claudeAgent", ["seven_day_fable"], "claude-fable-5-1", true],
+    ["claudeAgent", ["seven_day", "seven_day_fable"], "claude-opus-5-5", true],
+    ["claudeAgent", ["five_hour"], "claude-opus-5-5", true],
   ] as const)("matches %s pools %s to %s", (driver, ids, model, usesFallback) => {
     const defaultSelection = { ...selection, model };
     expect(
diff --git a/packages/shared/src/usageLimits.ts b/packages/shared/src/usageLimits.ts
index 869f676acae69..234db00baaa39 100644
--- a/packages/shared/src/usageLimits.ts
+++ b/packages/shared/src/usageLimits.ts
@@ -57,6 +57,14 @@ export function exhaustedUsageWindow(
       return exhausted.find(
         (window) => !window.id.startsWith("go_") || model.startsWith("opencode-go/"),
       );
+    case "claudeAgent": {
+      // Model-scoped weekly buckets (`seven_day_<model>`, e.g. Fable) only cap that model.
+      const slug = model.toLowerCase().replace(/[^a-z0-9]+/g, "_");
+      return exhausted.find((window) => {
+        const scope = window.id.match(/^seven_day_(.+)$/)?.[1];
+        return scope === undefined || slug.includes(scope);
+      });
+    }
     default:
       return exhausted[0];
   }