| key | TestingBot API Key | yes | — |
| secret | TestingBot API Secret | yes | — |
| debug | Enables debug messages. Will output request/response headers. | no | — |
| tbVersion | Version of the TestingBot Tunnel docker image. | no | latest |
| retryTimeout | Do not retry if this amount of minutes has passed since starting. | no | 10 |
| readyTimeout | Seconds to wait for the tunnel ready-file after starting the container. | no | 60 |
| auth | Performs Basic Authentication for specific hosts, only works with HTTP. | no | — |
| dns | Use a custom DNS server. For example: 8.8.8.8 | no | — |
| doctor | Perform sanity/health checks to detect possible misconfiguration or problems. | no | — |
| extraHeaders | Inject extra headers in the requests the tunnel makes. Value should be a JSON string. | no | — |
| fastFailRegexps | Specify domains you don't want to proxy, comma separated. | no | — |
| hubPort | Use this if you want to connect to port 80 on the TestingBot hub instead of the default port 4444. | no | — |
| metricsPort | Port to expose tunnel metrics on. Default 8003. | no | — |
| noBump | Do not perform SSL bumping. | no | — |
| noCache | Bypass TestingBot Caching Proxy running on the tunnel VM. | no | — |
| noProxy | Do not start a local proxy (requires user provided proxy server on port 8087). | no | — |
| pac | Proxy autoconfiguration. Should be a http(s) URL | no | — |
| proxy | Specify an upstream proxy: PROXYHOST:PROXYPORT | no | — |
| proxyCredentials | Username and password required to access the proxy configured with proxy | no | — |
| sePort | The local port your Selenium test should connect to. Default port is 4445 | no | — |
| localProxy | The port to launch the local proxy on (default 8087). | no | — |
| shared | Share this tunnel with other users in your team. Defaults to private. | no | — |
| tunnelIdentifier | A unique identifier for the Tunnel | no | — |
| web | Point to a directory for testing — starts a local webserver serving that directory. | no | — |
| uploadLogFile | Upload the TestingBot log file as artifact | no | true |