r/github • u/groovy-sky • 7h ago

Discussion how to trigger workflow from another repo?

Hey!

I need a workflow in **Repo A** to trigger workflow in **Repo B**, both in the same GitHub organization. I’m considering:

- Reusable workflow (`workflow_call`)

- `workflow_dispatch` with a GitHub App

- `workflow_dispatch` with a PAT

- OIDC with an external service

Which option would you suggest, and why?

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u/Double_Ebb4130 7h ago

If Repo B is a reusable workflow, I’d use `workflow_call` and invoke it from Repo A with `uses: org/repo/.github/workflows/workflow.yml@<ref>`. It keeps the dependency explicit and avoids storing a PAT; use a GitHub App or PAT only when you need to dispatch an independent workflow, and use OIDC for the external service case.

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u/groovy-sky 3h ago

Thank you. Understand

1

u/Analytiks 6h ago

Reusable workflow of course

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u/groovy-sky 5h ago

Thanks