> ## Documentation Index
> Fetch the complete documentation index at: https://developers.circle.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Magic numbers for testing StableFX

> Magic numbers you can use to create certain trade outcomes for testing

If you are a maker or taker on StableFX, you can use magic numbers to create
certain trade outcomes for testing. These outcomes allow you to test specific
scenarios where a trade fails or becomes stuck.

## Using magic numbers

When testing your integration, can you use the magic numbers to create specific
failure scenarios:

* If you are a taker, you can accept a quote where either the `from.amount` or
  the `to.amount` is equal to one of the magic numbers
* If you are maker, seeded trades will be available to you with the magic
  numbers as either the `from.amount` or the `to.amount`

When you accept a quote with a magic number as the `from.amount` or `to.amount`,
the resulting trade will have the outcome described in the next section.

For more information on testing your integration, see the
[Test your StableFX integration as a taker](/stablefx/tutorials/test-stablefx-integration-taker)
and
[Test your StableFX integration as a maker](/stablefx/tutorials/test-stablefx-integration-maker)
tutorials.

## Magic numbers

| Magic Number | Trade outcome                                                                       |
| ------------ | ----------------------------------------------------------------------------------- |
| `23.66`      | Opposite party signature won't be registered during trade recording on the contract |
| `23.67`      | Opposite party funding won't be provided                                            |