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18 changes: 16 additions & 2 deletions smartapi_mcp/server.py
Original file line number Diff line number Diff line change
Expand Up @@ -34,8 +34,10 @@ async def merge_mcp_servers(
list_of_servers: list[FastMCP], merged_name: str = "merged_mcp"
) -> FastMCP:
"""
Merges a list of FastMCP instances into a single FastMCP instance by combining their
tools, prefixing tool names with the server's name (API name) to avoid conflicts.
Merges a list of FastMCP instances into
a single FastMCP instance by combining their
tools, prefixing tool names with the server's
name (API name) to avoid conflicts.

Args:
list_of_servers: List of FastMCP instances to merge.
Expand All @@ -50,6 +52,7 @@ async def merge_mcp_servers(
api_name = re.sub(
r"[^a-z0-9_-]", "_", getattr(server, "name", "unknown_api").lower()
)

tools = await server.get_tools()
if tools:
for original_name, tool in tools.items():
Expand All @@ -63,6 +66,17 @@ async def merge_mcp_servers(
err_msg = f"Server {server} does not have accessible tools."
raise AttributeError(err_msg)

# Merge prompts
prompts = await server.get_prompts()
if prompts:
for original_name, prompt in prompts.items():
# Rename the prompt by prefixing with API name
new_name = f"{api_name}_{original_name}"
prompt.name = new_name # Modify the prompt's name attribute
# Add the renamed prompt to the merged instance
merged_mcp.add_prompt(prompt)
logger.debug(f"Merged {len(prompts)} prompts from {api_name}")

return merged_mcp


Expand Down
2 changes: 2 additions & 0 deletions tests/test_server.py
Original file line number Diff line number Diff line change
Expand Up @@ -234,12 +234,14 @@ async def test_merge_mcp_servers_special_characters_in_name():
mock_tool1 = MagicMock()
mock_tool1.name = "original_tool_1"
mock_server1.get_tools = AsyncMock(return_value={"tool1": mock_tool1})
mock_server1.get_prompts = AsyncMock(return_value={})

mock_server2 = MagicMock()
mock_server2.name = "API-with-dashes_and_underscores"
mock_tool2 = MagicMock()
mock_tool2.name = "original_tool_2"
mock_server2.get_tools = AsyncMock(return_value={"tool2": mock_tool2})
mock_server2.get_prompts = AsyncMock(return_value={})

merged_server = await merge_mcp_servers([mock_server1, mock_server2])

Expand Down