diff --git a/skills/last30days/scripts/lib/pipeline.py b/skills/last30days/scripts/lib/pipeline.py
index 30bcbbf..ca6afeb 100644
--- a/skills/last30days/scripts/lib/pipeline.py
+++ b/skills/last30days/scripts/lib/pipeline.py
@@ -79,6 +79,8 @@ MOCK_AVAILABLE_SOURCES = [
     "xiaohongshu",
     "github",
     "perplexity",
+    "threads",
+    "pinterest",
     "xquik",
     "digg",
 ]
@@ -118,7 +120,9 @@ def available_sources(config: dict[str, Any], requested_sources: list[str] | Non
         available.append("grounding")
     # Perplexity Sonar: opt-in additive source via INCLUDE_SOURCES=perplexity
     include_sources = (config.get("INCLUDE_SOURCES") or "").lower().split(",")
-    if config.get("OPENROUTER_API_KEY") and "perplexity" in include_sources:
+    if config.get("OPENROUTER_API_KEY") and (
+        "perplexity" in include_sources or (requested_sources and "perplexity" in requested_sources)
+    ):
         available.append("perplexity")
     if requested_sources and "xiaohongshu" in requested_sources and env.is_xiaohongshu_available(config):
         available.append("xiaohongshu")
diff --git a/tests/test_cli_v3.py b/tests/test_cli_v3.py
index 23e5dc2..7ec19d3 100644
--- a/tests/test_cli_v3.py
+++ b/tests/test_cli_v3.py
@@ -72,6 +72,26 @@ class CliV3Tests(unittest.TestCase):
             cli.parse_search_flag("web, reddit, hn, web"),
         )
 
+    def test_parse_search_flag_accepts_optional_social_sources(self):
+        self.assertEqual(
+            ["threads", "pinterest"],
+            cli.parse_search_flag("threads, pinterest"),
+        )
+
+    def test_explicit_threads_search_uses_scrapecreators_key_without_include_sources(self):
+        available = cli.pipeline.available_sources(
+            {"SCRAPECREATORS_API_KEY": "test-key", "INCLUDE_SOURCES": ""},
+            requested_sources=["threads"],
+        )
+        self.assertIn("threads", available)
+
+    def test_explicit_perplexity_search_uses_openrouter_key_without_include_sources(self):
+        available = cli.pipeline.available_sources(
+            {"OPENROUTER_API_KEY": "test-key", "INCLUDE_SOURCES": ""},
+            requested_sources=["perplexity"],
+        )
+        self.assertIn("perplexity", available)
+
     def test_parse_search_flag_rejects_invalid_or_empty_inputs(self):
         with self.assertRaises(SystemExit):
             cli.parse_search_flag("unknown")