2 files changed, 21 insertions, 1 deletions
diff --git a/packages/api/src/routes/models.ts b/packages/api/src/routes/models.ts
index 03c079a..6a0f5dc 100644
--- a/packages/api/src/routes/models.ts
+++ b/packages/api/src/routes/models.ts
@@ -17,6 +17,7 @@ import {
 	listStoredCredentials,
 	refreshAccountCredentialsAsync,
 	resolveApiKey,
+	resolveContextLimit,
 	setApiKey,
 	validateAccountCredentials,
 } from "@dispatch/core";
@@ -161,6 +162,21 @@ modelsRoutes.get("/available", async (c) => {
 	return c.json({ models });
 });
 
+// Resolve a model's MAXIMUM context window (in tokens) from the models.dev
+// catalog. Returns `{ contextLimit: number | null }`; `null` means the model's
+// limit is unknown (unsupported provider, unknown model, or catalog offline),
+// which the frontend renders without a denominator/percentage.
+modelsRoutes.get("/context-limit", async (c) => {
+	const provider = c.req.query("provider");
+	const modelId = c.req.query("modelId");
+	if (!provider || !modelId) {
+		return c.json({ error: "provider and modelId query parameters are required" }, 400);
+	}
+
+	const contextLimit = await resolveContextLimit(provider, modelId);
+	return c.json({ contextLimit });
+});
+
 // List available Claude accounts with validated credentials
 modelsRoutes.get("/claude-accounts", async (c) => {
 	const candidates = resolveClaudeAccounts();
diff --git a/packages/api/src/routes/tabs.ts b/packages/api/src/routes/tabs.ts
index b1e9659..f52ee99 100644
--- a/packages/api/src/routes/tabs.ts
+++ b/packages/api/src/routes/tabs.ts
@@ -6,6 +6,7 @@ import {
 	getSetting,
 	getTab,
 	getTotalChunkCount,
+	getUsageStatsForTab,
 	groupRowsToMessages,
 	listOpenTabs,
 	setSetting,
@@ -27,7 +28,10 @@ export function setTabsAgentManager(
 }
 
 tabsRoutes.get("/", (c) => {
-	const tabs = listOpenTabs();
+	// Enrich each tab with its persisted usage aggregate so the frontend can
+	// seed `cacheStats` on reload without an extra round-trip. N small indexed
+	// queries — fine for tab counts.
+	const tabs = listOpenTabs().map((t) => ({ ...t, usageStats: getUsageStatsForTab(t.id) }));
 	return c.json({ tabs });
 });