Skip to content Frequently Asked Questions

I want to whitelist in our firewall, which IP do you use?

You'll need to whitelist the IP

Both inbound and outbound originate and destinate at this IP address.

Note that this may change in the future, so sign up for the newsletter to be notified of changes.

The JSON data is in a weird format/can't be parsed by Extract JSONPath

The JSON data might have been attached to the request as form data rather than as request body data, which is usually how JSON is sent.

The data might look like this on

JSON Form Data

To remediate this in Extract JSONPath, you'll need to set the source field to the form field variable, which is automatically set by In the screenshot above, the variable name would be $request.form.my_json_data$, which works with Extract JSONPath:

JSON Form Data in JSONPath

How do I export the data stored on

With Pro, there's 3 ways to export data sent to your URL or email address.

  1. We provide a CSV Export functionality, simply click the button in the menu.

    CSV Export

  2. Data can be saved using the API using any programming language.

  3. The CLI (Command-Line Interface) can be used to forward requests from to a workstation or server. More info here

How do I send data to my computer/localhost?

You can either periodically fetch the data using the API or stream requests to a local URL using the CLI, in a similar fashion to e.g. ngrok.

I'm getting a 404 Not Found, what's wrong? / When does URLs expire?

Using the free version of, URLs automatically expire in 7 days. After that, the URL is no longer available and data is deleted.

With the paid version, Pro, URLs never expire automatically.

I'm getting a 405 Method Not Allowed, what's wrong?

You might be copying the URL for the application, and not the actual URL. app (wrong):!/6dbb3859-4ad5-4e85-acae-e44d6e37ea4a url (correct):

I'm getting a 429 Too Many Requests, what's wrong?

The URL was automatically blocked due to a large amount of requests, as per our Terms of Service. This is done to prevent a decrease in service level for our other customers.

For Pro customers, it is possible to have a URL whitelisted so it will not be automatically blocked. To request a whitelisting, please contact Support.

Additionally, the limit for automatically blocking the URL is many times higher than for the free version.

I'm getting a 413 Payload Too Large, what's wrong? / What's the request size limit?

The HTTP body data (e.g. files or JSON data) submitted to must be below 10 megabytes. More than that will cause a HTTP 413 response.

I'm getting a "Certificate Expired" error

Our SSL certificate is fully working; the issue lies with your system. In september 2021, our SSL provider, LetsEncrypt, updated their root certificate. This can mean that if your locally installed trusted root certificates are of an old version, you'll be seeing a certificate error as now runs a certificate that is based on the new root certificate chain.

To remediate this problem, you'll need to update your local certificate trust store:

Some systems and packages, like Python certifi/urllib3, also come with static certificates. We cannot support updating these.

Is my data private?

Yes. Per default, all URLs associated with a Pro account are only visible for the user. Additionally, users can set passwords on individual URLs to view the data.

For free users, data is accessible to anyone who knows the ID of the URL.

Can I use for production workloads?

Yes. Thousands of our customers use to build workflows that help their business, without needing to hire a programmer or pay for and setup servers. We take care of the infrastructure so you can build what you need.

How much data does store?

For each URL associated with a Pro account, makes the latest 10.000 requests or emails available. Old requests are automatically rotated/purged periodically.

In Control Panel, it is also possible to configure a lower number of requests to store automatically before they are deleted.

For free users, the amount is 500 and old requests are not automatically rotated.