* feat: Add comprehensive Chinese localization support for issue #412
- Add locale parameter to ChatRequest model to capture user's language preference
- Implement language-aware template loading in template.py with fallback to English
- Update all apply_prompt_template calls to pass locale through the workflow
- Create Chinese translations for 14 core prompt files:
* Main agents: coordinator, planner, researcher, reporter, coder
* Subprocess agents: podcast_script_writer, ppt_composer, prompt_enhancer
* Writing assistant: all 6 prose prompts
- Update app.py to extract and propagate locale through workflow state
- Support both zh-CN and en-US locales with automatic fallback
- Ensure locale flows through all agent nodes and template rendering
* address the review suggestions
* fix: resolve issue #467 - message content validation and Tavily search error handling
This commit implements a comprehensive fix for issue #467 where the application
crashed with 'Field required: input.messages.3.content' error when generating reports.
## Root Cause Analysis
The issue had multiple interconnected causes:
1. Tavily tool returned mixed types (lists/error strings) instead of consistent JSON
2. background_investigation_node didn't handle error cases properly, returning None
3. Missing message content validation before LLM calls
4. Insufficient error diagnostics for content-related errors
## Changes Made
### Part 1: Fix Tavily Search Tool (tavily_search_results_with_images.py)
- Modified _run() and _arun() methods to return JSON strings instead of mixed types
- Error responses now return JSON: {"error": repr(e)}
- Successful responses return JSON string: json.dumps(cleaned_results)
- Ensures tool results always have valid string content for ToolMessages
### Part 2: Fix background_investigation_node Error Handling (graph/nodes.py)
- Initialize background_investigation_results to empty list instead of None
- Added proper JSON parsing for string responses from Tavily tool
- Handle error responses with explicit error logging
- Always return valid JSON (empty list if error) instead of None
### Part 3: Add Message Content Validation (utils/context_manager.py)
- New validate_message_content() function validates all messages before LLM calls
- Ensures all messages have content attribute and valid string content
- Converts complex types (lists, dicts) to JSON strings
- Provides graceful fallback for messages with issues
### Part 4: Enhanced Error Diagnostics (_execute_agent_step in graph/nodes.py)
- Call message validation before agent invocation
- Add detailed logging for content-related errors
- Log message types, content types, and lengths when validation fails
- Helps with future debugging of similar issues
## Testing
- All unit tests pass (395 tests)
- Python syntax verified for all modified files
- No breaking changes to existing functionality
* test: update tests for issue #467 fixes
Update test expectations to match the new implementation:
- Tavily search tool now returns JSON strings instead of mixed types
- background_investigation_node returns empty list [] for errors instead of None
- All tests updated to verify the new behavior
- All 391 tests pass successfully
* Update src/graph/nodes.py
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---------
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* fix: support additional Tavily search parameters via configuration to fix#548
- Add include_answer, search_depth, include_raw_content, include_images, include_image_descriptions to SEARCH_ENGINE config
- Update get_web_search_tool() to load these parameters from configuration with sensible defaults
- Parameters are now properly passed to TavilySearchWithImages during initialization
- This fixes 'got an unexpected keyword argument' errors when using web_search tool
- Update tests to verify new parameters are correctly set
* test: add comprehensive unit tests for web search configuration loading
- Add test for custom configuration values (include_answer, search_depth, etc.)
- Add test for empty configuration (all defaults)
- Add test for image_descriptions logic when include_images is false
- Add test for partial configuration
- Add test for missing config file
- Add test for multiple domains in include/exclude lists
All 7 new tests pass and provide comprehensive coverage of configuration loading
and parameter handling for Tavily search tool initialization.
* test: verify all Tavily configuration parameters are optional
Add 8 comprehensive tests to verify that all Tavily engine configuration
parameters are truly optional:
- test_tavily_with_no_search_engine_section: SEARCH_ENGINE section missing
- test_tavily_with_completely_empty_config: Entire config missing
- test_tavily_with_only_include_answer_param: Single param, rest default
- test_tavily_with_only_search_depth_param: Single param, rest default
- test_tavily_with_only_include_domains_param: Domain param, rest default
- test_tavily_with_explicit_false_boolean_values: False values work correctly
- test_tavily_with_empty_domain_lists: Empty lists handled correctly
- test_tavily_all_parameters_optional_mix: Multiple missing params work
These tests verify:
- Tool creation never fails regardless of missing configuration
- All parameters have sensible defaults
- Boolean parameters can be explicitly set to False
- Any combination of optional parameters works
- Domain lists can be empty or omitted
All 15 Tavily configuration tests pass successfully.
* fix: support local models by making thought field optional in Plan model
- Make thought field optional in Plan model to fix Pydantic validation errors with local models
- Add Ollama configuration example to conf.yaml.example
- Update documentation to include local model support
- Improve planner prompt with better JSON format requirements
Fixes local model integration issues where models like qwen3:14b would fail
due to missing thought field in JSON output.
* feat: Add intelligent clarification feature for research queries
- Add multi-turn clarification process to refine vague research questions
- Implement three-dimension clarification standard (Tech/App, Focus, Scope)
- Add clarification state management in coordinator node
- Update coordinator prompt with detailed clarification guidelines
- Add UI settings to enable/disable clarification feature (disabled by default)
- Update workflow to handle clarification rounds recursively
- Add comprehensive test coverage for clarification functionality
- Update documentation with clarification feature usage guide
Key components:
- src/graph/nodes.py: Core clarification logic and state management
- src/prompts/coordinator.md: Detailed clarification guidelines
- src/workflow.py: Recursive clarification handling
- web/: UI settings integration
- tests/: Comprehensive test coverage
- docs/: Updated configuration guide
* fix: Improve clarification conversation continuity
- Add comprehensive conversation history to clarification context
- Include previous exchanges summary in system messages
- Add explicit guidelines for continuing rounds in coordinator prompt
- Prevent LLM from starting new topics during clarification
- Ensure topic continuity across clarification rounds
Fixes issue where LLM would restart clarification instead of building upon previous exchanges.
* fix: Add conversation history to clarification context
* fix: resolve clarification feature message to planer, prompt, test issues
- Optimize coordinator.md prompt template for better clarification flow
- Simplify final message sent to planner after clarification
- Fix API key assertion issues in test_search.py
* fix: Add configurable max_clarification_rounds and comprehensive tests
- Add max_clarification_rounds parameter for external configuration
- Add comprehensive test cases for clarification feature in test_app.py
- Fixes issues found during interactive mode testing where:
- Recursive call failed due to missing initial_state parameter
- Clarification exited prematurely at max rounds
- Incorrect logging of max rounds reached
* Move clarification tests to test_nodes.py and add max_clarification_rounds to zh.json
* fix: add max_clarification_rounds parameter passing from frontend to backend
- Add max_clarification_rounds parameter in store.ts sendMessage function
- Add max_clarification_rounds type definition in chat.ts
- Ensure frontend settings page clarification rounds are correctly passed to backend
* fix: refine clarification workflow state handling and coverage
- Add clarification history reconstruction
- Fix clarified topic accumulation
- Add clarified_research_topic state field
- Preserve clarification state in recursive calls
- Add comprehensive test coverage
* refactor: optimize coordinator logic and type annotations
- Simplify handoff topic logic in coordinator_node
- Update type annotations from Tuple to tuple
- Improve code readability and maintainability
---------
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
* fix: ensure web search is performed for research plans to fix#535
When using certain models (DeepSeek-V3, Qwen3, or local deployments), the
agent framework failed to trigger web search tools, resulting in hallucinated
data. This fix implements multiple safeguards:
1. Add enforce_web_search configuration flag:
- New config option to mandate web search in research plans
- Defaults to False for backward compatibility
2. Add plan validation function validate_and_fix_plan():
- Validates that plans include at least one research step with web search
- Enforces web search requirement when enabled
- Adds default research step if plan has no steps
3. Enhance coordinator_node fallback logic:
- When model fails to call tools, fallback to planner instead of __end__
- Ensures workflow continues even when tool calling fails
- Logs detailed diagnostic info for debugging
4. Update prompts for stricter requirements:
- planner.md: Add MANDATORY web search requirement and clear warnings
- coordinator.md: Add CRITICAL tool calling requirement
- Emphasize consequences of missing web search (hallucinated data)
5. Update tests to reflect new behavior:
- test_coordinator_node_no_tool_calls: Expect planner instead of __end__
- test_coordinator_empty_llm_response_corner_case: Same expectation
Fixes#535 by ensuring:
- Web search is always performed for research tasks
- Workflow doesn't terminate on tool calling failures
- Models with poor tool calling support can still proceed
- No hallucinated data without real information gathering
* Update src/graph/nodes.py
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Update src/graph/nodes.py
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* accept the review suggestion of getting configuration
---------
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Keep fixing #631
This pull request updates the crawl_tool function to return its results as a JSON string instead of a dictionary, and adjusts the unit tests accordingly to handle the new return type. The changes ensure consistent serialization of output and proper validation in tests.
- Change image result type from 'image' to 'image_url' to match OpenAI API expectations
- Wrap image URL in dict structure: {"url": "..."} instead of plain string
- Update SearchResultPostProcessor to handle dict-based image_url during duplicate removal
- Update tests to validate new image format
This fixes the 400 error: Invalid value: 'image'. Supported values are: 'text', 'image_url'...
Co-authored-by: Willem Jiang <143703838+willem-bd@users.noreply.github.com>
- Backend: Convert non-string content (lists, dicts) to JSON strings in _create_event_stream_message to ensure frontend always receives string content
- Frontend: Add type guard before calling startsWith() on toolCall.result for defensive programming
This fixes the TypeError: toolCall.result.startsWith is not a function when tools return complex objects.
* fix: add missing RunnableConfig parameter to human_feedback_node
This fixes issue #569 where interrupt() was being called outside of a runnable context.
The human_feedback_node was missing the config: RunnableConfig parameter that all other
node functions have, which caused RuntimeError when interrupt() tried to access the config.
- Add config: RunnableConfig parameter to function signature
- Add State type annotation to state parameter for consistency
- Maintains LangGraph execution context required by interrupt()
* test: update human_feedback_node tests to pass RunnableConfig parameter
Update all test functions that call human_feedback_node to include the new
required config parameter. These tests were failing because they were not
providing the RunnableConfig argument after the fix to add proper LangGraph
execution context.
Tests updated:
- test_human_feedback_node_auto_accepted
- test_human_feedback_node_edit_plan
- test_human_feedback_node_accepted
- test_human_feedback_node_invalid_interrupt
- test_human_feedback_node_json_decode_error_first_iteration
- test_human_feedback_node_json_decode_error_second_iteration
- test_human_feedback_node_not_enough_context
All tests now pass the mock_config fixture to human_feedback_node.
- Wrap agent.ainvoke() calls in try-except blocks
- Log full exception tracebacks for better debugging
- Return detailed error messages to users instead of generic 'internal error'
- Include step title and agent name in error context
- Allow workflow to continue gracefully when agent execution fails
- Store error details in observations for audit trail
- Set asyncio.WindowsSelectorEventLoopPolicy() on Windows at app module level
- Ensures psycopg can run in async mode on Windows regardless of entry point
- Fixes 'ProactorEventLoop' error when using PostgreSQL checkpointer
- Works with all entry points: server.py, uvicorn, langgraph dev, etc.
* fix: support local models by making thought field optional in Plan model
- Make thought field optional in Plan model to fix Pydantic validation errors with local models
- Add Ollama configuration example to conf.yaml.example
- Update documentation to include local model support
- Improve planner prompt with better JSON format requirements
Fixes local model integration issues where models like qwen3:14b would fail
due to missing thought field in JSON output.
* feat: Add intelligent clarification feature for research queries
- Add multi-turn clarification process to refine vague research questions
- Implement three-dimension clarification standard (Tech/App, Focus, Scope)
- Add clarification state management in coordinator node
- Update coordinator prompt with detailed clarification guidelines
- Add UI settings to enable/disable clarification feature (disabled by default)
- Update workflow to handle clarification rounds recursively
- Add comprehensive test coverage for clarification functionality
- Update documentation with clarification feature usage guide
Key components:
- src/graph/nodes.py: Core clarification logic and state management
- src/prompts/coordinator.md: Detailed clarification guidelines
- src/workflow.py: Recursive clarification handling
- web/: UI settings integration
- tests/: Comprehensive test coverage
- docs/: Updated configuration guide
* fix: Improve clarification conversation continuity
- Add comprehensive conversation history to clarification context
- Include previous exchanges summary in system messages
- Add explicit guidelines for continuing rounds in coordinator prompt
- Prevent LLM from starting new topics during clarification
- Ensure topic continuity across clarification rounds
Fixes issue where LLM would restart clarification instead of building upon previous exchanges.
* fix: Add conversation history to clarification context
* fix: resolve clarification feature message to planer, prompt, test issues
- Optimize coordinator.md prompt template for better clarification flow
- Simplify final message sent to planner after clarification
- Fix API key assertion issues in test_search.py
* fix: Add configurable max_clarification_rounds and comprehensive tests
- Add max_clarification_rounds parameter for external configuration
- Add comprehensive test cases for clarification feature in test_app.py
- Fixes issues found during interactive mode testing where:
- Recursive call failed due to missing initial_state parameter
- Clarification exited prematurely at max rounds
- Incorrect logging of max rounds reached
* Move clarification tests to test_nodes.py and add max_clarification_rounds to zh.json
- Make thought field optional in Plan model to fix Pydantic validation errors with local models
- Add Ollama configuration example to conf.yaml.example
- Update documentation to include local model support
- Improve planner prompt with better JSON format requirements
Fixes local model integration issues where models like qwen3:14b would fail
due to missing thought field in JSON output.
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
* feat:Add context compress
* feat: Add unit test
* feat: add unit test for context manager
* feat: add postprocessor param && code format
* feat: add configuration guide
* fix: fix the configuration_guide
* fix: fix the unit test
* fix: fix the default value
* feat: add test and log for context_manager
* add searx/searxng support
* nit
* Fix indentation in search.py for readability
* Clean up imports in search.py
Removed unused imports from search.py
---------
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
* feat:support config tavily search results
* feat: support config tavily search results
* feat: update the default value of include_images
* fix: fix the test
---------
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
* feat: add Google AI Studio API support with platform-based detection
* chore: update configuration_guide.md
* fix the uv.lock formate error
---------
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
* feat: Implement MilvusRetriever with embedding model and resource management
* chore: Update configuration and loader files for consistency
* chore: Clean up test_milvus.py for improved readability and organization
* feat: Add tests for DashscopeEmbeddings query and document embedding methods
* feat: Add tests for embedding model initialization and example file loading in MilvusProvider
* chore: Remove unused imports and clean up test_milvus.py for better readability
* chore: Clean up test_milvus.py for improved readability and organization
* chore: Clean up test_milvus.py for improved readability and organization
* fix: replace print statements with logging in recursion limit function
* Implement feature X to enhance user experience and optimize performance
* refactor: clean up unused imports and comments in AboutTab component
* Implement feature X to enhance user experience and fix bug Y in module Z
---------
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
* fix: using mongomock for the checkpoint test
* Add postgres mock setting to the unit test
* Added utils file of postgres_mock_utils
* fixed the runtime loading error of deerflow server
* feat: Enhance chat streaming and tool call processing
- Added support for MongoDB checkpointer in the chat streaming workflow.
- Introduced functions to process tool call chunks and sanitize arguments.
- Improved event message creation with additional metadata.
- Enhanced error handling for JSON serialization in event messages.
- Updated the frontend to convert escaped characters in tool call arguments.
- Refactored the workflow input preparation and initial message processing.
- Added new dependencies for MongoDB integration and tool argument sanitization.
* fix: Update MongoDB checkpointer configuration to use LANGGRAPH_CHECKPOINT_DB_URL
* feat: Add support for Postgres checkpointing and update README with database recommendations
* feat: Implement checkpoint saver functionality and update MongoDB connection handling
* refactor: Improve code formatting and readability in app.py and json_utils.py
* refactor: Clean up commented code and improve formatting in server.py
* refactor: Remove unused imports and improve code organization in app.py
* refactor: Improve code organization and remove unnecessary comments in app.py
* chore: use langgraph-checkpoint-postgres==2.0.21 to avoid the JSON convert issue in the latest version, implement chat stream persistant with Postgres
* feat: add MongoDB and PostgreSQL support for LangGraph checkpointing, enhance environment variable handling
* fix: update comments for clarity on Windows event loop policy
* chore: remove empty code changes in MongoDB and PostgreSQL checkpoint tests
* chore: clean up unused imports and code in checkpoint-related files
* chore: remove empty code changes in test_checkpoint.py
* chore: remove empty code changes in test_checkpoint.py
* chore: remove empty code changes in test_checkpoint.py
* test: update status code assertions in MCP endpoint tests to allow for 403 responses
* test: update MCP endpoint tests to assert specific status codes and enable MCP server configuration
* chore: remove unnecessary environment variables from unittest workflow
* fix: invert condition for MCP server configuration check to raise 403 when disabled
* chore: remove pymongo from test dependencies in uv.lock
* chore: optimize the _get_agent_name method
* test: enhance ChatStreamManager tests for PostgreSQL and MongoDB initialization
* test: add persistence tests for ChatStreamManager with PostgreSQL and MongoDB
* test: add unit tests for ChatStreamManager initialization with PostgreSQL and MongoDB
* test: enhance persistence tests for ChatStreamManager with PostgreSQL and MongoDB to verify message aggregation
* test: add unit tests for ChatStreamManager with PostgreSQL and MongoDB
* test: add unit tests for ChatStreamManager initialization with PostgreSQL and MongoDB
* test: add unit tests for ChatStreamManager initialization with PostgreSQL and MongoDB
---------
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
* fix: update README and configuration guide for new model support and reasoning capabilities
* fix: format code for consistency in agent and node files
* fix: update test cases for environment variable handling in llm configuration
* fix: refactor message chunk conversion functions for improved clarity and maintainability
* refactor: remove enable_thinking parameter from LLM configuration functions
* chore: update agent-LLM mapping for consistency
* chore: update LLM configuration handling for improved clarity
* test: add unit tests for Dashscope message chunk conversion and LLM configuration
* test: add unit tests for message chunk conversion in Dashscope
* test: add unit tests for message chunk conversion in Dashscope
* chore: remove unused imports from test_dashscope.py
---------
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
* fix:env AGENT_RECURSION_LIMIT not work
* fix:add test
* black tests/unit/config/test_configuration.py
---------
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
* feat: add support for 'unknown' message agent in MessageListItem and Message type
* fix: update default agent name from 'unknown' to 'planner' in workflow generator
* fix: remove handling for 'unknown' agent in MessageListItem
* fix: remove 'unknown' agent from Message interface
---------
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
* feat: disable the MCP server configuation by default
* Fixed the lint and test errors
* fix the lint error
* feat:update the mcp config documents and tests
* fixed the lint errors
* feat(llm): Add retry mechanism for LLM API calls
* feat: configure max_retries for LLM calls via conf.yaml
---------
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
* improve: add abort btn to abort the mcp add request.
* refactor: simplify style mapping by using upper case only
* format: execute uv run black --preview . to format python files.
* Add support for self-signed certs from model providers
* cleanup
---------
Co-authored-by: tonydoesathing <tmastromarino@cpacket.com>
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
* test: add unit tests in server
* test: add unit tests of app.py in server
* test: reformat the codes
* test: add more tests to cover the exception part
* test: add more tests on the server app part
* fix: don't show the detail exception to the client
* test: try to fix the CI test
* fix: keep the TTS API call without exposure information
* Fixed the unit test errors
* Fixed the lint error
* test: added unit test of builder
* test: Add unit tests for nodes.py
* test: add more unit tests in test_nodes
* test: try to fix the unit test error on GitHub
* test: reformate the code of test_nodes.py
* Fix the test error of reset the local argument
* Fixed the test error by setup args
* reformat the code
* test: add more test on test_tts.py
* test: add unit test of search and retriever in tools
* test: remove the main code of search.py
* test: add the travily_search unit test
* reformate the codes
* test: add unit tests of tools
* Added the pytest-asyncio dependency
* added the license header of test_tavily_search_api_wrapper.py
* feat: implment backend for adjust report style
* feat: add web part
* fix test cases
* fix: fix typing
---------
Co-authored-by: Henry Li <henry1943@163.com>
* feat: local search tool call result display
* chore: add file copyright
* fix: miss edit plan interrupt feedback
* feat: disable pasting html into input box
* test: add background node unit test
Change-Id: Ia99f5a1687464387dcb01bbee04deaa371c6e490
* test: add background node unit test
Change-Id: I9aabcf02ff04fda40c56f3ea22abe6b8f93bf9b6
* test: fix test error
Change-Id: I3997dc53a2cfaa35501a1fbda5902ee15528124e
* test: fix unit test error
Change-Id: If4c4cd10673e76a30945674c7cda198aeabf28d0
* test: fix unit test error
Change-Id: I3dd7a6179132e5497a30ada443d88de0c47af3d4
Willem Jiang
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