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Example code of naprawksef/sdk

Informations about the package sdk

naprawksef/sdk

Official PHP SDK for the NaprawKSeF API.

Requirements

Installation

Quick start

API keys

API keys come in two environments:

Prefix Environment Quota History
nk_live_* production counts against your plan persisted in dashboard
nk_test_* sandbox bypassed not persisted

The SDK rejects malformed keys at construction time (44 chars, nk_<env>_<4 hex prefix><32 hex secret>).

Idempotency

POSTs to mutating endpoints accept an idempotency key (8–200 chars). The SDK auto-generates a UUID v4 when you don't supply one — pass your own for end-to-end replay safety:

Replays return the original response for 24 hours. Conflicting bodies under the same key yield an IdempotencyConflictException.

Errors

All API errors are subclasses of NaprawKsefException:

Each exception exposes $status, $code (stable string, e.g. QUOTA_EXCEEDED), $requestId, $headers and $details.

RateLimitException and IdempotencyConflictException expose retryAfterSeconds() to make retry loops easy.

Webhooks

Verify incoming events with the standalone helper (no SDK client needed):

Laravel controller:

Retries

408, 425, 429, 500, 502, 503, 504 and network errors are retried up to max_retries (default 3) with exponential backoff + ±20 % jitter. Retry-After is honoured on 429/503.

Testing

The included PHPUnit suite covers signature verification end-to-end.

License

MIT. See LICENSE.

All versions of sdk with dependencies

PHP Build Version
Package Version
Requires php Version >=8.1
ext-curl Version *
ext-json Version *
Composer command for our command line client (download client) This client runs in each environment. You don't need a specific PHP version etc. The first 20 API calls are free. Standard composer command

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