dinie-sdk-sandbox 2.1.0

Official Python SDK for the Dinie V3 API

dinie

Official Python SDK for the Dinie V3 API (backend-only).

A synchronous Python client for the Dinie credit-as-a-service platform: OAuth2 client-credentials auth (handled for you), automatic retries with idempotency, cursor pagination, typed errors, and webhook verification. Snake_case throughout — the wire and the Python surface match, so there is no casing to translate.

Requirements

• Python >= 3.10
• A Dinie API credential (client_id + client_secret)

Installation

# Sandbox (published as dinie-sdk-sandbox on PyPI):
pip install dinie-sdk-sandbox

# Production (once the real SDK ships):
# pip install dinie-sdk

The import is always from dinie import Dinie — the PyPI package name and the module name are independent.

Quickstart

from dinie import Dinie
from dinie.generated.types.create_customer_request import CreateCustomerRequest

client = Dinie(client_id="dinie_ci_…", client_secret="…")

customer = client.customers.create(
    CreateCustomerRequest(
        cpf="123.456.789-09",
        cnpj="12.345.678/0001-90",
        email="[e-mail]",
        phone="[phone]",
    )
)
print(customer.id)      # "cust_…"
print(customer.status)  # "pending_kyc"

The Dinie client owns an in-memory OAuth2 token cache, so construct it once and reuse it. Tokens are fetched and refreshed transparently — you never handle bearer tokens manually.

OAuth2 Client Credentials

The SDK uses the OAuth2 client_credentials grant. On the first request it POSTs to /auth/token with your client_id and client_secret, caches the bearer token for its lifetime, and automatically refreshes when it expires. A single-flight lock ensures only one refresh runs at a time under concurrent access.

You can also pass credentials via environment variables instead of constructor arguments:

export DINIE_CLIENT_ID=dinie_ci_…
export DINIE_CLIENT_SECRET=…

Then construct the client with no arguments — it reads DINIE_CLIENT_ID and DINIE_CLIENT_SECRET from the environment automatically:

# Instantiate with environment variables (no explicit credentials):
#   client = Dinie()

Customer → Offer → Loan Flow

The full origination flow: register a customer, wait for KYC to pass (received via webhook), then check the credit offer and create a loan.

from dinie import Dinie
from dinie.generated.types.create_customer_request import CreateCustomerRequest
from dinie.generated.types.create_simulation_request import CreateSimulationRequest
from dinie.generated.types.create_loan_request import CreateLoanRequest

client = Dinie(client_id="dinie_ci_…", client_secret="…")

# 1. Register a customer
customer = client.customers.create(
    CreateCustomerRequest(
        cpf="123.456.789-09",
        cnpj="12.345.678/0001-90",
        email="[e-mail]",
        phone="[phone]",
    )
)

# 2. List credit offers (available once KYC is approved and status == "active")
offers_page = client.customers.credit_offers.list(customer.id)
offer = next(iter(offers_page))

# 3. Simulate a loan against the offer
simulation = client.credit_offers.create_simulation(
    offer.id,
    CreateSimulationRequest(
        installment_count=12,
        requested_amount=5000.0,
    ),
)

# 4. Create the loan from the accepted simulation
loan = client.loans.create(
    CreateLoanRequest(
        credit_offer_id=offer.id,
        simulation_id=simulation.id,
        installment_count=simulation.installment_count,
        installment_amount=simulation.installment_amount,
        first_due_date="2026-07-01",
    )
)

print(loan.id)          # "loan_…"
print(loan.status)      # "awaiting_signatures"
print(loan.signing_url) # CCB e-signature URL for the customer

Webhooks

Register an endpoint and handle incoming events in your backend:

# Register your webhook URL once:
# client.webhook_endpoints.create(...)

Verify and parse the webhook payload in your handler:

from dinie.webhooks import extract

def handle_webhook(payload: bytes, headers: dict) -> None:  # type: ignore[type-arg]
    event = extract(payload, headers)
    match event.event_type:
        case "customer.active":
            # customer KYC approved — check for credit offers
            pass
        case "credit_offer.available":
            # new credit offer is ready
            pass
        case "loan.active":
            # loan disbursed
            pass

Errors

All API errors subclass dinie.ApiError:

ApiError
├── AuthError             (401)
├── PermissionDeniedError (403)
├── NotFoundError         (404)
├── ConflictError         (409)
├── ValidationError       (422)
├── RateLimitError        (429)
└── ServerError           (500+)

Catch errors in your application like any Python exception:

# Pattern (not executable in isolation — illustrative):
# try:
#     customer = client.customers.retrieve("cust_unknown")
# except dinie.NotFoundError:
#     print("customer not found")

Development

pip install -e ".[dev]"
pytest tests/
ruff check dinie/ tests/
ruff format --check dinie/ tests/
mypy --strict dinie/

Architecture

dinie/
  runtime/    # hand-written: HTTP, auth, retries, pagination, errors, webhooks
  generated/  # spec-driven: client, resources, types, events (emitted by sdk-generator)

The runtime/ layer is hand-written and owned by humans. The generated/ layer is emitted by sdk-generator --target python from the OpenAPI spec + sdk-config.yml. Never hand-edit generated/ — regenerate instead.

License

MIT