You can use the git.deploymentEnabled option to prevent automatic deployment

https://vercel.com/docs/project-configuration/git-configuration

vercel.com

Git Configuration

Learn how to configure Git for your project through vercel.json or vercel.ts.

Thanks for the quick response. I've created a vercel.json that targets a branch and one that disables all GitHub deploys, as shown below, but I am still seeing the failed deployment on PRs. I am also not clear on why the deployment is failing in the first place; our current setup is one account linked to the GitHub repository with access for management and other outside contributors making PRs.

1
{
2
  "git": {
3
    "deploymentEnabled": false
4
  }
5
}

So I got a hint from this comment which included the following:

Environments -> Preview -> Branch Tracking set to enabled

It appears that when branch tracking is disabled, Vercel doesn't look to the vercel.json and deploys regardless; however, when branch tracking is enabled, the settings in the vercel.json are respected. When I set branch tracking to enabled, I no longer saw failed deploys in GitHub. My current vercel.json is below.

1
{
2
  "git": {
3
    "deploymentEnabled": false
4
  }
5
}
6