autonomi-client 0.6.2

Autonomi client API

Autonomi Python Bindings

The Autonomi client library provides Python bindings for easy integration with Python applications.

Installation

We recommend using uv for Python environment management:

Make sure you have installed:

• Python
• uv

Quick Start

# make sure you are in the autonomi directory
cd autonomi/

# make a virtual environment
uv venv
source .venv/bin/activate
uv sync
maturin develop --uv

# Then you can test with pytest
pytest tests/python/test_bindings.py

# or you can run the examples or your own scripts!
python python/examples/autonomi_pointers.py 

from autonomi_client import *

Client, Wallet, PaymentOption *

# Initialize a wallet with a private key
wallet = Wallet.new_from_private_key(Network(True),
                                     "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80")
print(f"Wallet address: {wallet.address()}")
print(f"Wallet balance: {await wallet.balance()}")

# Connect to the network
client = await Client.init()

# Create payment option using the wallet
payment = PaymentOption.wallet(wallet)

# Upload some data
data = b"Hello, Safe Network!"
[cost, addr] = await client.data_put_public(data, payment)
print(f"Data uploaded to address: {addr}")

# Download the data back
downloaded = await client.data_get_public(addr)
print(f"Downloaded data: {downloaded.decode()}")

API Reference

Client

The main interface to interact with the Autonomi network.

Connection Methods

• connect(peers: List[str]) -> Client
  • Connect to network nodes
  • peers: List of multiaddresses for initial network nodes

Data Operations

• data_put_public(data: bytes, payment: PaymentOption) -> str

  • Upload public data to the network
  • Returns address where data is stored

• data_get_public(addr: str) -> bytes

  • Download public data from the network
  • addr: Address returned from data_put_public

• data_put(data: bytes, payment: PaymentOption) -> DataMapChunk

  • Store private (encrypted) data
  • Returns access information for later retrieval

• data_get(access: DataMapChunk) -> bytes

  • Retrieve private data
  • access: DataMapChunk from previous data_put

Pointer Operations

• pointer_get(address: str) -> Pointer

  • Retrieve pointer from network
  • address: Hex-encoded pointer address

• pointer_put(pointer: Pointer, wallet: Wallet)

  • Store pointer on network
  • Requires payment via wallet

• pointer_cost(key: VaultSecretKey) -> str

  • Calculate pointer storage cost
  • Returns cost in atto tokens

Scratchpad

Manage mutable encrypted data on the network.

Scratchpad Class

• Scratchpad(owner: SecretKey, data_encoding: int, unencrypted_data: bytes, counter: int) -> Scratchpad

  • Create a new scratchpad instance
  • owner: Secret key for encrypting and signing
  • data_encoding: Custom value to identify data type (app-defined)
  • unencrypted_data: Raw data to be encrypted
  • counter: Version counter for tracking updates

• address() -> ScratchpadAddress

  • Get the address of the scratchpad

• decrypt_data(sk: SecretKey) -> bytes

  • Decrypt the data using the given secret key

Client Methods for Scratchpad

• scratchpad_get_from_public_key(public_key: PublicKey) -> Scratchpad

  • Retrieve a scratchpad using owner's public key

• scratchpad_get(addr: ScratchpadAddress) -> Scratchpad

  • Retrieve a scratchpad by its address

• scratchpad_check_existance(addr: ScratchpadAddress) -> bool

  • Check if a scratchpad exists on the network

• scratchpad_put(scratchpad: Scratchpad, payment: PaymentOption) -> Tuple[str, ScratchpadAddress]

  • Store a scratchpad on the network
  • Returns (cost, address)

scratchpad_create(owner: SecretKey, content_type: int, initial_data: bytes, payment: PaymentOption) -> Tuple[str, ScratchpadAddress]

• Create a new scratchpad with a counter of 0

• Returns (cost, address)

• scratchpad_update(owner: SecretKey, content_type: int, data: bytes) -> None

  • Update an existing scratchpad
  • Note: Counter is automatically incremented by 1 during update
  • The scratchpad must exist before updating

• scratchpad_cost(public_key: PublicKey) -> str

  • Calculate the cost to store a scratchpad
  • Returns cost in atto tokens

Important Notes on Scratchpad Counter

1. When creating a new scratchpad with scratchpad_create, the counter starts at 0
2. When updating with scratchpad_update, the counter is automatically incremented
3. If you need to set a specific counter value, create a new Scratchpad instance and use scratchpad_put
4. Only the scratchpad with the highest counter is kept on the network when there are conflicts

Vault Operations

• vault_cost(key: VaultSecretKey) -> str

  • Calculate vault storage cost

• write_bytes_to_vault(data: bytes, payment: PaymentOption, key: VaultSecretKey, content_type: int) -> str

  • Write data to vault
  • Returns vault address

• fetch_and_decrypt_vault(key: VaultSecretKey) -> Tuple[bytes, int]

  • Retrieve vault data
  • Returns (data, content_type)

• vault_get_user_data(key: VaultSecretKey) -> UserData

  • Get user data from vault

• vault_put_user_data(key: VaultSecretKey, payment: PaymentOption, user_data: UserData) -> str

  • Store user data in vault
  • Returns vault address

Wallet

Ethereum wallet management for payments.

• new(private_key: str) -> Wallet

  • Create wallet from private key
  • private_key: 64-char hex string without '0x' prefix

• address() -> str

  • Get wallet's Ethereum address

• balance() -> str

  • Get wallet's token balance

• balance_of_gas() -> str

  • Get wallet's gas balance

• set_transaction_config(config: TransactionConfig)

  • Set the transaction config for the wallet (see TransactionConfig)

TransactionConfig

Transaction configuration for wallets.

config = TransactionConfig(max_fee_per_gas=MaxFeePerGas.limited_auto(200000000))

MaxFeePerGas

Control the maximum fee per gas (gas price bid) for transactions:

• MaxFeePerGas.auto(): Use current network gas price. No gas price limit. Use with caution.

  MaxFeePerGas.auto()
  

• MaxFeePerGas.limited_auto(limit): Use current gas price with an upper limit. This is the recommended preset.

  # Limit to 0.2 gwei
  MaxFeePerGas.limited_auto(200000000)
  

• MaxFeePerGas.unlimited(): No gas price limit. Use with caution.

  MaxFeePerGas.unlimited()
  

• MaxFeePerGas.custom(wei_amount): Set exact gas price in wei.

  # Set to exactly 0.2 gwei
  MaxFeePerGas.custom(200000000)
  

PaymentOption

Configure payment methods.

• wallet(wallet: Wallet) -> PaymentOption
  • Create payment option from wallet

Pointer

Handle network pointers for referencing data.

• new(target: str) -> Pointer

  • Create new pointer
  • target: Hex-encoded target address

• address() -> str

  • Get pointer's network address

• target() -> str

  • Get pointer's target address

VaultSecretKey

Manage vault access keys.

• new() -> VaultSecretKey

  • Generate new key

• from_hex(hex: str) -> VaultSecretKey

  • Create from hex string

• to_hex() -> str

  • Convert to hex string

UserData

Manage user data in vaults.

• new() -> UserData

  • Create new user data

• add_file_archive(archive: str) -> Optional[str]

  • Add file archive
  • Returns archive ID if successful

• add_private_file_archive(archive: str) -> Optional[str]

  • Add private archive
  • Returns archive ID if successful

• file_archives() -> List[Tuple[str, str]]

  • List archives as (id, address) pairs

• private_file_archives() -> List[Tuple[str, str]]

  • List private archives as (id, address) pairs

DataMapChunk

Handle private data storage references.

• from_hex(hex: str) -> DataMapChunk

  • Create from hex string

• to_hex() -> str

  • Convert to hex string

• address() -> str

  • Get short reference address

Utility Functions

• encrypt(data: bytes) -> Tuple[bytes, List[bytes]]
  • Self-encrypt data
  • Returns (data_map, chunks)

Examples

See the examples/ directory for complete examples:

• autonomi_example.py: Basic data operations
• autonomi_pointers.py: Working with pointers
• autonomi_vault.py: Vault operations
• autonomi_private_data.py: Private data handling
• autonomi_private_encryption.py: Data encryption
• autonomi_scratchpad.py: Scratchpad creation and updates (with counter management)
• autonomi_advanced.py: Advanced usage scenarios

Best Practices

1. Always handle wallet private keys securely
2. Check operation costs before executing
3. Use appropriate error handling
4. Monitor wallet balance for payments
5. Use appropriate content types for vault storage
6. Consider using pointers for updatable references
7. Properly manage and backup vault keys

For more examples and detailed usage, see the examples in the repository.