diff --git a/open-sse/services/model.ts b/open-sse/services/model.ts
index 91ad9495c1..ec0f40d351 100644
--- a/open-sse/services/model.ts
+++ b/open-sse/services/model.ts
@@ -105,12 +105,13 @@ export function parseModel(modelStr) {
     extendedContext = true;
     cleanStr = cleanStr.slice(0, -4);
   }
+  cleanStr = cleanStr.trim();
 
   // Check if standard format: provider/model or alias/model
   if (cleanStr.includes("/")) {
     const firstSlash = cleanStr.indexOf("/");
-    const providerOrAlias = cleanStr.slice(0, firstSlash);
-    const model = cleanStr.slice(firstSlash + 1);
+    const providerOrAlias = cleanStr.slice(0, firstSlash).trim();
+    const model = cleanStr.slice(firstSlash + 1).trim();
     const provider = resolveProviderAlias(providerOrAlias);
     return { provider, model, isAlias: false, providerAlias: providerOrAlias, extendedContext };
   }
diff --git a/src/sse/services/auth.ts b/src/sse/services/auth.ts
index 8f28073265..06d15f29f6 100644
--- a/src/sse/services/auth.ts
+++ b/src/sse/services/auth.ts
@@ -23,6 +23,7 @@ import {
 } from "@omniroute/open-sse/config/providerRegistry.ts";
 import { COOLDOWN_MS } from "@omniroute/open-sse/config/constants.ts";
 import { getCodexModelScope } from "@omniroute/open-sse/executors/codex.ts";
+import { getProviderAlias, resolveProviderId } from "@/shared/constants/providers";
 import * as log from "../utils/logger";
 import { fisherYatesShuffle, getNextFromDeckSync } from "@/shared/utils/shuffleDeck";
 
@@ -316,13 +317,17 @@ export { fisherYatesShuffle, getNextFromDeckSync as getNextFromDeck };
  * Resolve provider aliases (e.g., nvidia -> nvidia_nim) for DB lookup
  */
 function getProviderSearchPool(provider: string): string[] {
+  const canonicalProvider = resolveProviderId(provider);
+  const canonicalAlias = getProviderAlias(canonicalProvider);
+
   if (provider === "nvidia") {
     return ["nvidia", "nvidia_nim"];
   }
   if (provider === "nvidia_nim") {
     return ["nvidia_nim", "nvidia"];
   }
-  return [provider];
+
+  return Array.from(new Set([provider, canonicalProvider, canonicalAlias].filter(Boolean)));
 }
 
 /**
diff --git a/tests/unit/auth-clear-account-error.test.mjs b/tests/unit/auth-clear-account-error.test.mjs
index 7f957a1ccd..4a9b45a6b1 100644
--- a/tests/unit/auth-clear-account-error.test.mjs
+++ b/tests/unit/auth-clear-account-error.test.mjs
@@ -56,3 +56,19 @@ test("clearAccountError clears stale provider error metadata after recovery", as
   assert.equal(updated.rateLimitedUntil, undefined);
   assert.equal(updated.backoffLevel, 0);
 });
+
+test("getProviderCredentials resolves provider aliases to canonical DB records", async () => {
+  await resetStorage();
+
+  const created = await providersDb.createProviderConnection({
+    provider: "codex",
+    authType: "oauth",
+    email: "alias@example.com",
+    accessToken: "access",
+    refreshToken: "refresh",
+    testStatus: "active",
+  });
+
+  const credentials = await auth.getProviderCredentials("cx");
+  assert.equal(credentials.connectionId, created.id);
+});
diff --git a/tests/unit/model-parse.test.mjs b/tests/unit/model-parse.test.mjs
index 39d539bfdc..e85e91f59f 100644
--- a/tests/unit/model-parse.test.mjs
+++ b/tests/unit/model-parse.test.mjs
@@ -20,3 +20,10 @@ test("[1m] suffix: works with provider prefix", () => {
   assert.strictEqual(result.model, "claude-sonnet-4-6");
   assert.strictEqual(result.extendedContext, true);
 });
+
+test("parseModel trims provider prefix and model id", () => {
+  const result = parseModel("  cx / gpt-5.4  ");
+  assert.strictEqual(result.providerAlias, "cx");
+  assert.strictEqual(result.provider, "codex");
+  assert.strictEqual(result.model, "gpt-5.4");
+});