Getting Started

Before starting, please take note of these warnings from Monzo API docs:

The Monzo Developer API is not suitable for building public applications

You may only connect to your own account or those of a small set of users you explicitly allow. Please read our blog post for more detail.

Strong Customer Authentication

After a user has authenticated, your client can fetch all of their transactions, and after 5 minutes, it can only sync the last 90 days of transactions. If you need the user’s entire transaction history, you should consider fetching and storing it right after authentication.

Installation

Since monz is a command line tool, the recommended installation method is via pipx:

$ pipx install monz

Of course, you can just install it directly from PyPI (ideally, inside a virtualenv):

$ python -m pip install monz

Authentication

Before you can access your Monzo account details through monz, you need to authenticate it. You can do that with a (temporary) access token (for example, from the Monzo Developer Portal), or go through a one time OAuth setup that will save the token on disk and automatically refresh it when it expires.

To do the latter, you should first create an OAuth client in Monzo developer tools (with the "Redirect URL" set to http://localhost:6600/monz). If you want the access token refresh automatically, you need to set the client as confidential. After that, run the monz authorize command with the obtained client ID and client secret.

This should open a new web browser tab (if it didn't, go to the link from the log message) that will let you authorize the OAuth client you just created. If everything goes well, you should be redirected to http://localhost:6600/monz and greeted with Monzo OAuth authorization complete. message.

Note that you might need to open your mobile app to allow full access to your account.

That's it! The access token is saved locally at ~/.pymonzo and - as long as you set the OAuth client as confidential - should be refreshed automatically when it expires.

Usage

The default subcommand is info, which shows your account balance and its latest transaction:

$ monz
Balance:                 £203.78
Total balance:           £303.78
Currency:                GBP
Spend today:             £4.20
Local currency:          THB
Local exchange rate:     45.558219

Last transaction:
         -£17.29 | MomCorp
ID:              tx_0000Lxo9IgPERj43i03iKH
Description:     MomCorp
Amount:          -£17.29
Currency:        GBP
Category:        general
Notes:           ✨                       
Created:         Feb 12, 3024, 12:39:22 PM
Settled:         Feb 13, 3024, 1:36:48 AM

You can view all linked accounts:

$ monz accounts
   Account 'acc_87539319' (GB)   
ID:                 acc_87539319
Description:        user_1729
Currency:           GBP
Account Number:     0101100101   
Sort Code:          04-00-04                   
Type:               uk_retail                  
Closed:             No                         
Created:            Dec 31, 2999, 11:59:59 PM  

If you have only one (active) account, it will be used everywhere by default. If you have more, you'll have to pass its ID explicitly when needed via the --account_id option.

Finally, you can see your latest transactions:

$ monz transactions -n 2 
         -£17.29 | MomCorp
ID:              tx_0000Lxo9IgPERj43i03iKH
Description:     MomCorp
Amount:          -£17.29
Currency:        GBP
Category:        general
Notes:           ✨                       
Created:         Feb 12, 3024, 12:39:22 PM
Settled:         Feb 13, 3024, 1:36:48 AM

   -£100.00 | pot_0000aDhHH8z3jvram0L0Di   
ID:              tx_0000FskkLc0KB7aK0SV4cd
Description:     pot_0000aDhHH8z3jvram0L0Di
Amount:          -£100.00
Currency:        GBP
Category:        savings
Created:         Feb 6, 3024, 10:49:22 AM
Settled:         Feb 6, 3024, 10:49:22 AM

You can see all available subcommands and options by running monz --help (or adding --help to any subcommand).