janus-ledger 0.1.0

Python gRPC client for Janus

janus-ledger

Python gRPC client for the Janus double-entry accounting engine.

Install

pip install janus-ledger

Quick Start

from janus import Janus

ledger = Janus(server_url="your-janus-server:50051")

# Create an entity — every book belongs to an entity
entity = ledger.create_entity(external_id="org-1", name="Acme Corp")

# Create books
ledger.create_book(name="Cash", book_type="asset", currency="USD", entity_external_id="org-1")
ledger.create_book(name="Revenue", book_type="liability", currency="USD", entity_external_id="org-1")

entry = ledger.create_journal_entry(
    idempotency_key="sale-001",
    book_entries=[
        {"book": "cash", "debit": 10000},
        {"book": "revenue", "credit": 10000},
    ],
)

balance = ledger.get_balance("cash")
print(f"Cash balance: {balance.balance} {balance.currency}")
# => Cash balance: 10000 USD

Configuration

Parameter	Description
server_url	gRPC server address (e.g., your-janus-server:50051)

API Reference

Janus(server_url)

Create a client connected to your Janus server.

Entities

Method	Description
create_entity(external_id, name, description?, metadata?)	Create a new entity. Returns Entity.
get_entity(external_id_or_id)	Get an entity by external ID or UUID. Returns Entity or None.
list_entities()	List all entities. Returns list[Entity].

Books

Method	Description
create_book(name, book_type, currency, entity_external_id, metadata?)	Create a new book. Returns Book.
get_book(type_or_id)	Get a book by type or ID. Returns Book or None.
list_books(book_type?, limit?, offset?)	List books with optional filters. Returns list[Book].

Journal Entries

Method	Description
create_journal_entry(idempotency_key, book_entries, ...)	Create a journal entry. Returns JournalEntry.
reverse_journal_entry(entry_id, idempotency_key, reason?)	Reverse a journal entry. Returns JournalEntry.
get_journal_entry(entry_id)	Get a journal entry by ID. Returns JournalEntry or None.
get_journal_entry_by_key(idempotency_key)	Get by idempotency key. Returns JournalEntry or None.

Balances

Method	Description
get_balance(book, as_of?)	Get the balance of a book. Returns BalanceResult.
get_balances(books, as_of?)	Get balances for multiple books. Returns list[BalanceResult].

License

MIT