enable mcp server, add tags, type-annotate search function

README.md

@@ -6,8 +6,21 @@ colorTo: blue
 sdk: gradio
 sdk_version: 5.50.0
 app_file: app.py
-pinned: false
+pinned: true
 license: mit
+mcp_server: true
+tags:
+- research
+- papers
+- academic-search
+- federated-search
+- mcp
+- mcp-server
+- arxiv
+- pubmed
+- semantic-scholar
+- openalex
+- scholarly
 ---
 
 # Research Papers Federated Search

app.py

@@ -52,7 +52,25 @@ def _dedupe(papers):
     return out
 
 
-def search(query, source_list, max_results, progress=gr.Progress()):
+def search(
+    query: str,
+    source_list: list,
+    max_results: int,
+    progress=gr.Progress(),
+):
+    """Federated academic paper search across arXiv, PubMed, Semantic Scholar, and OpenAlex.
+
+    Returns deduplicated results from the selected sources. Deduplication is by
+    DOI when available, then by (source, source_id).
+
+    Args:
+        query: Search query string.
+        source_list: List of source names to query. Valid values: arxiv, pubmed, semantic_scholar, openalex.
+        max_results: Maximum results to fetch per source (5-50).
+
+    Returns:
+        Tuple of (DataFrame of deduplicated papers, markdown diagnostics string).
+    """
     if not query or not query.strip():
         return pd.DataFrame(), "Enter a search query above."
     if not source_list:
@@ -193,4 +211,4 @@ with gr.Blocks(title="Research Papers Federated Search", theme=theme) as demo:
 
 
 if __name__ == "__main__":
-    demo.launch()
+    demo.launch(mcp_server=True)