Hello, i'm getting no almost no data when using apiRequest tool. The only data i'm receiving is what i put in body or headers. I get no info on CallID From number/customer number etc When using function tool, i get all that info. however the function tool doesn't have the variable extraction plan. Which i need to pull dynamic variables into my workflow Is the issue on my end? is it normal for the apiRequest tool to not send that info to my server?

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unsolved, i created a new post, since i can't change the tag

Manually pass those values in your apiRequest schema using variable substitution like, {{callId}}, {{customer.number}}..

Hi i just tried it but it's not working { "id": "644adbd2-d102-4550-aaab-7c7f75fa5c77", "createdAt": "2025-07-29T10:35:10.230Z", "updatedAt": "2025-07-29T18:08:50.057Z", "type": "apiRequest", "function": { "name": "api_request_tool", "description": "retrieve dynamic variables from my server" }, "messages": [ { "type": "request-start", "content": "", "blocking": false } ], "orgId": "f4e9fc77-59c7-4eee-929a-1d4fd5527194", "name": "test_dynamic_variables", "url": "https://test.onrender.com/vapi/get-client-dynamic-variables", "method": "POST", "body": { "type": "object", "required": [], "properties": { "callId": { "description": "", "type": "string", "value": "{{call.id}}" } } }, "variableExtractionPlan": { "schema": { "type": "object", "required": [ "client_name" ], "properties": { "client_name": { "description": "", "type": "string" } } }, "aliases": [] } } but my server sees the hardcoded {{call.id}} it's not being filled in 2025-07-29 18:09:45,686 - routes.vapi_routes - INFO - Request JSON data: {'callId': '{{call.id}}'}

Your server sees {{call.id}} literally because Vapi doesn’t auto-resolve placeholders in tool requests, you'll need to pass actual values using assistantOverrides.variableValues when starting or updating the call.

- INFO - Request JSON data: {'callId': '{{callId}}', 'from_number': '+32492291341'}

Nice 👍

assistantOverrides.variableValues when starting or updating the call. doesn't work in a workflow

Yeah now I got your issue 😶‍🌫️

But i have a workaround, i can retrieve the CallID from a serverurl update when the call starts. it's not ideal, but it's something

Glad you resolved it

it seems you guys are figuring it out together with us 😬 but this is the frontier of ai voice agents, we have to be patient... thanks for the help @Kings_big💫

How do you retrieve callID from server url update ? Is that like a node or something ? Can you share your workflow ? I'm having the same issue T_T

So when the call starts I use a custom tool, a function tool. in the payload you'll find the callID Save it in your database immediately after the function tool resolves i retrieve the callID back from my database with an api request tool, and extract to a dynamic variable so it's accessible for the rest of teh call

Thanks so much brother