Add custom_tools_prompt

Author: Thomvis

src/open_deep_research/configuration.py

@@ -231,12 +231,19 @@ class Configuration(BaseModel):
             }
         }
     )
-    
-    # Custom tools configuration
     custom_tools: Optional[List[Any]] = Field(
         default=None
     )
-
+    custom_tools_prompt: Optional[str] = Field(
+        default=None,
+        optional=True,
+        metadata={
+            "x_oap_ui_config": {
+                "type": "text",
+                "description": "Any additional instructions to pass along to the Agent regarding the custom tools that are available to it."
+            }
+        }
+    )
 
     @classmethod
     def from_runnable_config(

src/open_deep_research/deep_researcher.py

@@ -398,6 +398,7 @@ async def researcher(state: ResearcherState, config: RunnableConfig) -> Command[
 
     # Prepare system prompt with MCP context if available
     researcher_prompt = research_system_prompt.format(
+        custom_tools_prompt=configurable.custom_tools_prompt or "",
         mcp_prompt=configurable.mcp_prompt or "", 
         date=get_today_str()
     )

src/open_deep_research/prompts.py

@@ -146,6 +146,7 @@
 You have access to two main tools:
 1. **tavily_search**: For conducting web searches to gather information
 2. **think_tool**: For reflection and strategic planning during research
+{custom_tools_prompt}
 {mcp_prompt}
 
 **CRITICAL: Use think_tool after each search to reflect on results and plan next steps. Do not call think_tool with the tavily_search or any other tools. It should be to reflect on the results of the search.**