MojaWave Python SDK

A thin, typed Python client for the MojaWave REST API — send SMS (single, bulk, OTP), check credit balances, and verify webhooks across Tanzania's telco networks (Vodacom, Tigo, Airtel, Halotel).

pip install mojawave

Requires Python 3.8+.

Quickstart

from mojawave import MojaWave

client = MojaWave(api_key="sk_live_mw_...")  # or set MOJAWAVE_API_KEY

msg = client.sms.send(
    to="+255753276939",
    sender="MojaWave",
    message="Hello from Mojawave! Your verification code is 1234.",
)
print(msg.id, msg.status)

The client reads MOJAWAVE_API_KEY from the environment when api_key is omitted. Use an sk_test_mw_ key for the sandbox — no real messages are sent and no charges apply.

Never expose your live API key in client-side code. Use environment variables and server-side requests only.

Sending SMS

Single message

msg = client.sms.send(
    to="+255712345678",
    sender="MojaWave",                 # sender ID (≤11 alphanumeric chars); defaults to MojaWave
    message="Your code is 1234.",
    webhook_url="https://example.com/webhooks/sms",  # optional delivery receipts
    schedule_at="2026-07-01T09:00:00Z",              # optional ISO-8601 schedule
    metadata={"customer_id": "cust98765"},           # optional, echoed back
    tags=["onboarding", "verification"],             # optional
)

Look up a message

msg = client.sms.get("89b82624-f1a2-4f5e-85b5-102e79a06779")
if msg.delivered:
    print("Delivered at", msg.timeline.delivered_at)
elif msg.failed:
    print("Failed:", msg.failure_reason)

Bulk send (up to 10,000 recipients)

Bulk jobs run asynchronously — you get a job back immediately, then poll it.

job = client.sms.bulk(
    name="Marketing Campaign Q1",
    sender="MojaWave",
    message="Hello {name}, your code is {code}",
    recipients=[
        {"to": "+255712345678", "personalization": {"name": "John", "code": "ABC123"}},
        {"to": "+255712345679", "personalization": {"name": "Jane", "code": "XYZ789"}},
        "+255712345680",  # a bare string works too (no personalization)
    ],
    webhook_url="https://example.com/webhooks",
)
print(job.id, job.status, job.total_recipients)

# Poll for progress
job = client.sms.get_bulk(job.id)
print(f"{job.progress_percent}% — {job.sent_count} sent")

Unicode messages have a 70-character per-segment limit (vs. 160 for plain SMS). Plan message length accordingly.

Credits

balances = client.credits.balance()
print(balances.sms.balance, balances.sms.is_low_balance)
print(balances.email.balance)

Webhooks

MojaWave signs every webhook with an X-MojaWave-Signature header (HMAC-SHA256 of the raw body). Always verify against the raw request bytes — parsing to JSON first can change whitespace and break the check.

from mojawave import construct_event, WebhookVerificationError, SIGNATURE_HEADER

# Flask / Django view
signature = request.headers.get(SIGNATURE_HEADER)
try:
    event = construct_event(request.get_data(), signature, WEBHOOK_SECRET)
except WebhookVerificationError:
    return "Forbidden", 403

if event.type == "message.delivered":
    ...

Event types: message.sent, message.delivered, message.failed, credits.low. See examples/flask_webhook.py for a full handler.

If you only need a boolean, use verify_signature(payload, signature, secret).

Error handling

Every documented HTTP status maps to a typed exception. All inherit from MojaWaveError.

from mojawave import InsufficientBalanceError, RateLimitError

try:
    client.sms.send(to="+255712345678", message="hi")
except InsufficientBalanceError:
    ...  # top up
except RateLimitError as e:
    time.sleep(e.retry_after or 1)

The client automatically retries 429 and 5xx responses with exponential backoff (honouring Retry-After), controlled by max_retries (default 2).

Configuration

client = MojaWave(
    api_key="sk_live_mw_...",
    environment="live",        # or "sandbox"
    timeout=30.0,              # seconds
    max_retries=2,
    base_url="https://api.mojawave.com/v1",
)

Rate-limit headers from the most recent response are available on client.rate_limit (.limit, .remaining, .reset). The client is usable as a context manager to ensure the HTTP session is closed:

with MojaWave() as client:
    client.sms.send(to="+255712345678", message="hi")

Development

pip install -e ".[dev]"
pytest
mypy

License

MIT