diff --git a/src/sdk/exceptions.test.ts b/src/sdk/exceptions.test.ts
index 48a5e00..afac242 100644
--- a/src/sdk/exceptions.test.ts
+++ b/src/sdk/exceptions.test.ts
@@ -27,6 +27,8 @@ describe("toSdkError", () => {
     ["idempotency_key_reuse", IdempotencyKeyReuse],
     ["insufficient_credits", InsufficientCredits],
     ["not_found", NotFound],
+    ["job_not_found", NotFound],
+    ["asset_not_found", NotFound],
     ["unauthorized", Unauthorized],
     ["forbidden", Forbidden],
   ];
diff --git a/src/sdk/exceptions.ts b/src/sdk/exceptions.ts
index a012ba0..9d164ab 100644
--- a/src/sdk/exceptions.ts
+++ b/src/sdk/exceptions.ts
@@ -94,6 +94,11 @@ const BY_CODE: Record<string, ComfyErrorClass> = {
   idempotency_key_reuse: IdempotencyKeyReuse,
   insufficient_credits: InsufficientCredits,
   not_found: NotFound,
+  // public-api returns entity-specific 404 codes even though the spec documents
+  // the generic not_found; map them so a missing job/asset raises the typed
+  // NotFound. (Server/spec reconciliation of the code set is a separate follow-up.)
+  job_not_found: NotFound,
+  asset_not_found: NotFound,
   unauthorized: Unauthorized,
   forbidden: Forbidden,
 };