remove_gh_artifacts.sh

#!/bin/bash

# Change the date under CUTOFF_DATE to change how far back you want to delete
# Install the GitHub CLI tool by following the instructions in the official documentation: https://cli.github.com/manual/installation
# Make sure you auth first to github with 'gh auth login'

REPO_OWNER="OWNER"
REPO_NAME="REPO_NAME"
CUTOFF_DATE=$(date --date='30 days ago' +'%Y-%m-%dT%H:%M:%SZ')
PAGE=1

while true; do
  # Retrieve a page of artifacts
  ART_EXIST=$(gh api repos/$REPO_OWNER/$REPO_NAME/actions/artifacts?per_page=100\&page=$PAGE | jq -r '.artifacts[]')
  ARTIFACTS=$(gh api repos/$REPO_OWNER/$REPO_NAME/actions/artifacts?per_page=100\&page=$PAGE | jq -r '.artifacts[] | select(.created_at < "'"$CUTOFF_DATE"'") | .id')
  echo $PAGE
  # If there are no more artifacts, exit the loop
  if [[ -z "$ART_EXIST" ]]; then
    break
  fi

  # Loop through the artifacts on this page and delete the old ones
  for ARTIFACT_ID in $ARTIFACTS; do
    ARTIFACT_NAME=$(gh api repos/$REPO_OWNER/$REPO_NAME/actions/artifacts/$ARTIFACT_ID | jq -r '.name')
    echo "Deleting artifact $ARTIFACT_NAME (ID: $ARTIFACT_ID)..."
    gh api repos/$REPO_OWNER/$REPO_NAME/actions/artifacts/$ARTIFACT_ID -X DELETE
  done

  # Increment the page counter
  PAGE=$((PAGE+1))
done

Thanks for sharing this! You might want to add --silent at the end of the delete call so that the script doesn't get interrupted by the response body.