debridge-py

Typed Python client for the deBridge DLN cross-chain swap/order API. Works across EVM chains and Solana (19+ chains), sync and async, with full type hints (py.typed), built on httpx + pydantic v2.

The client covers the public, no-auth data endpoints needed to quote and track cross-chain orders. Signing and broadcasting the returned transaction is left to you (optionally with the [exec] extra: web3.py for EVM, solders for Solana).

Install

pip install debridge-py
# optional signing helpers:
pip install "debridge-py[exec]"

Quickstart

from debridge import DebridgeClient
from debridge.constants import ChainId

with DebridgeClient() as client:
    # 1. discover supported chains
    chains = client.get_supported_chains()

    # 2. quote + build a cross-chain order (10 USDC Base -> USDC Arbitrum)
    order = client.create_order(
        src_chain_id=ChainId.BASE,
        src_chain_token_in="0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        src_chain_token_in_amount="10000000",          # 10 USDC (6 decimals)
        dst_chain_id=ChainId.ARBITRUM,
        dst_chain_token_out="0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        dst_chain_token_out_amount="auto",              # API quotes the output
        dst_chain_token_out_recipient="0xYourRecipient",
        sender_address="0xYourSender",
    )
    print(order.estimation.dst_chain_token_out.amount)  # estimated output
    print(order.tx.to, order.tx.value, order.tx.data)   # tx to sign & send

    # 3. after broadcasting order.tx, poll until the order settles
    final = client.poll_status(order.order_id, interval=5, timeout=600)
    print(final.status)  # e.g. "Fulfilled"

Async

import asyncio
from debridge import AsyncDebridgeClient

async def main():
    async with AsyncDebridgeClient() as client:
        chains = await client.get_supported_chains()
        print(len(chains.chains))

asyncio.run(main())

EVM and Solana

Addresses and amounts are kept as strings so the same models represent both 0x-hex (EVM) and base58 (Solana) values and amounts beyond 64-bit range. The returned transaction adapts to the source chain:

• EVM source → order.tx has data, to, value (an EVM call).
• Solana source → order.tx has only data (the serialized versioned tx as hex).

Native-token sentinels are exposed as constants.EVM_NATIVE_TOKEN and constants.SOLANA_NATIVE_TOKEN.

API surface

Every method exists on both DebridgeClient (sync) and AsyncDebridgeClient (async, with await). Errors raise DebridgeAPIError (a DebridgeError), exposing .error_id, .error_code, .message, .req_id, .status_code — including compliance blocks that the API returns with HTTP 200.

Configuration

DebridgeClient(base_url="https://my-proxy.example/v1.0", timeout=30.0)

base_url defaults to https://dln.debridge.finance/v1.0 and can point at any compatible endpoint.

Development

uv venv --python 3.9 && source .venv/bin/activate
uv pip install -e ".[dev]"
pytest            # unit tests (network mocked, integration deselected)
pytest -m integration   # one live test against the real API
ruff check . && ruff format --check .
mypy

See CONTRIBUTING.md for the full contributor workflow and CHANGELOG.md for release history.

License

MIT — see LICENSE.