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n8n - 💡(How to fix) Fix Google Gemini(PaLM) credentials

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Bug Description

Dear Community,

with the forced change by Google for new API Key generation

New key creation: to use Agent Platform (Vertex) or Gemini APIs with an API key, you must bind it to a service account by selecting 'Authenticate API calls through a service account' before applying the API restriction.

the credentials test is failing and node execution too (n8n version: 2.20.4). Same API key used by google py sdk works.

Documentation Ref: https://docs.n8n.io/integrations/builtin/credentials/googleai/

To Reproduce

Steps taken:

  • Create new Service Account with permission: Gemini for Google Cloud User
  • Create API key and link to above Service Account with permission: Gemini API
  • Use API Key as Google Gemini(PaLM) credentials

Expected behavior

Use of API on Gemini Node

Debug Info

  • Test the credentials: Authorization failed - please check your credentials

Operating System

Docker Image

n8n Version

2.20.4

Node.js Version

Docker Image

Database

PostgreSQL

Execution mode

main (default)

Hosting

self hosted

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FAQ

Expected behavior

Use of API on Gemini Node

#api#container setup#orchestration issue#cache issue#memory leak

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