The HashiCorp Vault GitHub Action is an officially supported action that allows users to easily inject secrets from their HashiCorp Vault infrastructure into GitHub workflows, automating CI/CD developer workflows. This action was originally created by Richard Simpson and has been taken over by HashiCorp for long-term support. It enables teams to securely store and control access to tokens, passwords, certificates, and encryption keys, allowing them to protect machines and applications. The action can be used to trigger events based on how code is built, tested, or deployed, and can be integrated with GitHub Actions to inject secrets into CI/CD pipelines just in time for API key retrieval or other tasks that require secret injection. Users can authenticate with HashiCorp Vault using a token, AppRole, or GitHub auth methods, and fetch a variety of secrets based on their policy's access. The action is well-suited for use with self-hosted runners to connect to HashiCorp Vault over internal networks.