diff --git a/CLAUDE.md b/CLAUDE.md
index 0923332..e7ff28d 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -16,7 +16,7 @@ uv run mcp-feed-reader-crunchtools
 ## Tools (17)
 
 ### Feed Management (5)
-- add_feed_tool, list_feeds_tool, get_feed_tool, delete_feed_tool, fetch_feeds_tool
+- add_feed_tool, list_feeds_tool, get_feed_tool, delete_feed_tool, refresh_feeds_tool
 
 ### Entry Management (5)
 - list_entries_tool, read_entry_tool, mark_read_tool, mark_unread_tool, search_entries_tool
diff --git a/README.md b/README.md
index 5115836..de06061 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ podman run -v feedreader-data:/data quay.io/crunchtools/mcp-feed-reader
 - `list_feeds_tool` — List all feeds with unread counts
 - `get_feed_tool` — Get feed details
 - `delete_feed_tool` — Remove a feed
-- `fetch_feeds_tool` — Fetch new entries
+- `refresh_feeds_tool` — Crawl feed sources for new content (slow, prefer systemd timer)
 
 ### Entry Management
 - `list_entries_tool` — List entries (filterable, paginated)
diff --git a/src/mcp_feed_reader_crunchtools/server.py b/src/mcp_feed_reader_crunchtools/server.py
index dde94fc..43485f6 100644
--- a/src/mcp_feed_reader_crunchtools/server.py
+++ b/src/mcp_feed_reader_crunchtools/server.py
@@ -82,11 +82,13 @@ async def delete_feed_tool(feed_id: int) -> str:
 
 
 @mcp.tool()
-async def fetch_feeds_tool(feed_id: int | None = None) -> str:
-    """Fetch new entries for all feeds or a specific feed.
+async def refresh_feeds_tool(feed_id: int | None = None) -> str:
+    """Crawl feed sources over the network for new content. Slow — takes 30-60s for all feeds.
+
+    Prefer the systemd timer for background updates. Use list_entries to read cached content.
 
     Args:
-        feed_id: Specific feed ID to fetch (optional, fetches all if omitted)
+        feed_id: Specific feed ID to refresh (optional, refreshes all if omitted)
     """
     return await fetch_feeds(feed_id)