solders 0.27.1


pip install solders

  Latest version

Released: Nov 15, 2025
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Author: kevinheavey
Requires Python: >=3.8,<4.0
Classifiers

Programming Language
  • Rust
  • Python :: Implementation :: CPython
  • Python :: Implementation :: PyPy

PyPI version License: MIT

Solders

solders is a high-performance Python toolkit for Solana, written in Rust. It provides robust solutions to the following problems:

  • Core SDK stuff: keypairs, pubkeys, signing and serializing transactions - that sort of thing.
  • RPC stuff: building requests and parsing responses (no networking stuff - if you want help with that, solana-py is your friend).
  • Integration testing stuff: the solders.litesvm module is an alternative to solana-test-validator that's much more convenient and much faster. It's based on solana-program-test if you know that is.

What about solana-py?

solders and solana-py are good friends. solana-py uses solders under the hood extensively in its core API and RPC API. The main differences are:

  • solders doesn't have functions to actually interact with the RPC server (though solana-py does use the RPC code from solders).
  • solders doesn't provide SPL Token and SPL Memo clients.
  • solana-py may not have support for all the RPC requests and responses provided by solders.
  • solana-py doesn't have anything like the litesvm testing kit.

Since solana-py uses solders under the hood and they don't duplicate each other's features, you should just use whichever library you need.

Installation

pip install solders

Note: Requires Python >= 3.7.

Example Usage

>>> from solders.message import Message
>>> from solders.keypair import Keypair
>>> from solders.instruction import Instruction
>>> from solders.hash import Hash
>>> from solders.transaction import Transaction
>>> from solders.pubkey import Pubkey
>>> program_id = Pubkey.default()
>>> arbitrary_instruction_data = bytes([1])
>>> accounts = []
>>> instruction = Instruction(program_id, arbitrary_instruction_data, accounts)
>>> payer = Keypair()
>>> message = Message([instruction], payer.pubkey())
>>> blockhash = Hash.default()  # replace with a real blockhash
>>> tx = Transaction([payer], message, blockhash)

Development

Setup

  1. Install uv.
  2. Install the project dependencies (including dev tools):
uv sync --dev
  1. Activate the virtual environment (optional, uv run works without activation):
source .venv/bin/activate

Testing

  1. Run uv run maturin develop to compile the Rust code.
  2. Run uv run make fmt, uv run make lint, and uv run make test.
0.27.1 Nov 15, 2025
0.27.0 Oct 26, 2025
0.26.0 Feb 18, 2025
0.25.0 Jan 26, 2025
0.24.0 Jan 24, 2025
0.23.0 Nov 10, 2024
0.22.0 Oct 18, 2024
0.21.0 Mar 13, 2024
0.20.0 Feb 12, 2024
0.19.0 Jan 01, 2024
0.18.1 Jun 03, 2023
0.18.0 Jun 02, 2023
0.17.0 May 11, 2023
0.16.0 May 10, 2023
0.15.1 May 05, 2023
0.15.0 May 05, 2023
0.14.4 Feb 22, 2023
0.14.3 Jan 28, 2023
0.14.2 Jan 24, 2023
0.14.1 Jan 24, 2023
0.14.0 Jan 12, 2023
0.13.0 Jan 11, 2023
0.12.0 Jan 10, 2023
0.11.0 Jan 10, 2023
0.10.0 Oct 31, 2022
0.9.3 Oct 15, 2022
0.9.2 Oct 14, 2022
0.9.1 Oct 14, 2022
0.9.0 Oct 14, 2022
0.8.1 Oct 10, 2022
0.8.0 Oct 10, 2022
0.7.0 Oct 10, 2022
0.6.0 Oct 06, 2022
0.5.2 Oct 02, 2022
0.5.1 Sep 29, 2022
0.5.0 Sep 26, 2022
0.4.0 Aug 13, 2022
0.3.1 Jul 04, 2022
0.3.0 Jul 04, 2022
0.2.0 Jun 13, 2022
0.1.4 Jun 01, 2022
0.1.3 May 30, 2022
0.1.2 May 29, 2022
0.1.1 May 28, 2022
0.1.0 May 28, 2022

Wheel compatibility matrix

Platform CPython >=3.8 (abi3)
macosx_10_9_universal2
macosx_10_9_x86_64
macosx_11_0_arm64
manylinux1_i686
manylinux2014_armv7l
manylinux2014_x86_64
manylinux_2_17_armv7l
manylinux_2_17_x86_64
manylinux_2_28_aarch64
manylinux_2_5_i686
musllinux_1_2_i686
musllinux_1_2_x86_64
win_amd64

Files in release

Extras: None
Dependencies:
typing-extensions (>=4.2.0)
jsonalias (==0.1.1)