kingfisher/data/rules/tailscale.yml

rules:
  - name: Tailscale API Key
    id: kingfisher.tailscale.1
    pattern: |
      (?xi)
      \b
      (
        tskey-[a-z]+-[A-Z0-9_-]{20,24}
      )
      \b
    min_entropy: 3.0
    confidence: medium
    examples:
      - tskey-secret-12345678-abcdefghijkl
      - tskey-api-abcdefg-1234567890123
    references:
      - https://tailscale.com/kb/1215/oauth-clients
    validation:
      type: Http
      content:
        request:
          method: GET
          url: https://api.tailscale.com/api/v2/tailnet/-/devices
          headers:
            Authorization: "Bearer {{ TOKEN }}"
            Accept: application/json
          response_matcher:
            - report_response: true
            - type: StatusMatch
              status: [200]