Python library to communicate with Ledger devices

pip install ledgerblue==0.1.54


Ledgerblue - Python tools for Ledger devices

This package contains Python tools to communicate with Ledger devices and manage applications life cycle.


It is recommended to install this package in a Virtual Environment in your native environment (not a Docker image) to avoid hidapi issues.

python3 -m venv ledger
source ledger/bin/activate
pip install ledgerblue

Supported devices

At the moment these tools work for all ledger devices, but only for special Nano X developer units which are not available to the general public. The Recover scripts, will work with Nano X starting from a specific version.

Please check Ledger Developer Portal to see how to debug your application on a Nano X simulator using Speculos

Installation pre-requisites

  • libudev-dev
  • libusb-1.0-0-dev
  • python-dev (python >= 3.6)

This package can optionally work with libsecp256k1 Python bindings compiled with ECDH support. If you wish to enable libsecp256k1 bindings, make sure to install libsecp256k1 as follows:

SECP_BUNDLED_EXPERIMENTAL=1 pip --no-cache-dir install --no-binary secp256k1 secp256k1

To install the custom secp256k1 package on MacOS, you previously need to run:

brew install libtool

Which would end up installing glibtool and glibtoolize utilities required for the build process.

Giving permissions on udev

When running on Linux, make sure the following rules have been added to /etc/udev/rules.d/:

SUBSYSTEMS=="usb", ATTRS{idVendor}=="2c97", MODE="0660", TAG+="uaccess", TAG+="udev-acl" OWNER="<UNIX username>"

KERNEL=="hidraw*", ATTRS{idVendor}=="2c97", MODE="0660" OWNER="<UNIX username>"

Target ID

Use the following Target IDs (--targetId option) when running commands directly:

Device name Firmware Version Target ID
Flex all 0x33300004
Stax all 0x33200004
Nano S Plus all 0x33100004
Nano X (developer units only) 0x33000004
Nano S <= 1.3.1 0x31100002
Nano S 1.4.x 0x31100003
Nano S >= 1.5.x 0x31100004
Ledger Blue <= 2.0 0x31000002
Ledger Blue 2.1.x 0x31000004
Ledger Blue v2 2.1.x 0x31010004

Ledgerblue documentation

You can generate the Ledgerblue documentation locally.

Firstly, make sure you have pip installed and make installed.

Then, install the documentation dependencies:

# from the top of the Git repository
pip install .[doc]

Finally, generate the documentation:

# from the top of the Git repository
(cd doc/ && make html)

The documentation will be generated into the doc/build/ directory.