Vertex AI

Install the vertex google config using below

lc providers install vertex_google

Add necessary variables - location and project id

lc providers vars vertex_google set location global
lc p vars vertex_google s project your-project-id

Then add your service account details, when prompted for password, give the path to service account json (ex: /path/to/sa.json)

lc keys add vertex_google

Test your configuration

lc -m vertex_google:gemini-2.5-pro "what is 2+2?"                     
Thinking...📊 Token usage: 111 input + 8 output = 119 total
2 + 2 = 4.