Query Tool Not Working on First Question After Node Transfer in Workflows
summary:
When using VAPI workflows with global nodes, query tools fail to access knowledge bases on the first question after transferring to the global node. The same question works correctly on the second attempt, indicating a context initialization issue after node transfers ( i have verified with the logs that the query tool is not being used on first access to node, only on the second prompt where I ask "are you sure?") as the first answer since it was not based on the KB it was wrong, the second answer was right since it have accessed the KB.
Steps to Reproduce
Create workflow with node transfer to global node
Configure global node with query tool and knowledge base
Transfer call to global node
Ask question requiring knowledge base lookup
Result: First question returns generic/incorrect answer (not from knowledge base)
Ask same question again
Result: Second question correctly uses knowledge base and returns accurate data
Expected Behavior
Query tool should access knowledge base correctly on the first question after node transfer, not just on subsequent questions.
Current Impact
Users receive incorrect information on their first question after transfer
Requires asking the same question twice to get accurate knowledge base results
Creates poor user experience and undermines system reliability
Configuration Details
Query Tool: Configured with Google Gemini 2.0 Flash
Knowledge Base: Contains correct data (verified)
Model: OpenAI GPT-5 Mini
Transfer Type: Global node in workflow
Additional Context
The knowledge base contains correct data and the query tool works perfectly when tested independently. The issue only occurs specifically after workflow node transfers, suggesting a context/tool initialization problem in the workflow system.
Call id: 0199ae6a-01b9-7881-90e0-b22f08075ef1
time: Oct 4, 2025, 11:50 (GMT+2)
When using VAPI workflows with global nodes, query tools fail to access knowledge bases on the first question after transferring to the global node. The same question works correctly on the second attempt, indicating a context initialization issue after node transfers ( i have verified with the logs that the query tool is not being used on first access to node, only on the second prompt where I ask "are you sure?") as the first answer since it was not based on the KB it was wrong, the second answer was right since it have accessed the KB.
Steps to Reproduce
Create workflow with node transfer to global node
Configure global node with query tool and knowledge base
Transfer call to global node
Ask question requiring knowledge base lookup
Result: First question returns generic/incorrect answer (not from knowledge base)
Ask same question again
Result: Second question correctly uses knowledge base and returns accurate data
Expected Behavior
Query tool should access knowledge base correctly on the first question after node transfer, not just on subsequent questions.
Current Impact
Users receive incorrect information on their first question after transfer
Requires asking the same question twice to get accurate knowledge base results
Creates poor user experience and undermines system reliability
Configuration Details
Query Tool: Configured with Google Gemini 2.0 Flash
Knowledge Base: Contains correct data (verified)
Model: OpenAI GPT-5 Mini
Transfer Type: Global node in workflow
Additional Context
The knowledge base contains correct data and the query tool works perfectly when tested independently. The issue only occurs specifically after workflow node transfers, suggesting a context/tool initialization problem in the workflow system.
Call id: 0199ae6a-01b9-7881-90e0-b22f08075ef1
time: Oct 4, 2025, 11:50 (GMT+2)
