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slikair API documentation

JSON in, JSON out. Merchant-token authentication, a sandbox that mirrors live, and server-to-server notifications you can treat as the source of truth.

Open the V2 API reference Get sandbox access Build with AI

API

Browse the V2 API

Structured payment sessions, card tokenization with merchant-signed JWTs, payouts and typed notifications.

Payment sessions

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Create and track a customer payment across every method you have enabled.

POST/payment/createCreate Payment
POST/payment/get-statusGet Payment Status

Tokenization

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Vault card data with a merchant-signed EdDSA JWT, then charge the stored token.

POST/payment/create/tokenizationTokenize Card
POST/payment/create/tokenPay With Token

Payouts

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Send funds back to the consumer with no reference to a previous transaction.

POST/payouts/createCreate Payout
POST/payouts/get-statusGet Payout Status

Webhooks

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Server-to-server notifications delivered to your notification_link.

POSTv2_payin_notificationPay-in notification
POSTv2_tokenization_notificationTokenization notification
POSTv2_payout_notificationPayout notification

Authentication

Your first payment request

Requests are authenticated with an API key sent in the merchant-token header, alongside your merchant_id and merchant_site_id. Create calls require a unique Idempotency-Key so a retry never charges twice.

Read the authentication docs

curl -X POST https://devsilo.xyz/api/v2/payment/create \
  -H "merchant-token: $SLIKAIR_MERCHANT_TOKEN" \
  -H "Idempotency-Key: 550e8400-e29b-41d4-a716-446655440000" \
  -H "Content-Type: application/json" \
  -d '{
    "merchant_id": "9e07802d51264b02b4b3ef09dfb94219",
    "merchant_site_id": "1234",
    "payment_method": "credit_card",
    "amount": 99.99,
    "currency": "EUR",
    "country": "NLD",
    "email": "john@example.com",
    "first_name": "John",
    "last_name": "Doe",
    "device_ip": "192.168.1.1",
    "request_id": "550e8400-e29b-41d4-a716-446655440000",
    "notification_link": "https://example.com/webhook",
    "success_url": "https://example.com/success",
    "pending_url": "https://example.com/pending",
    "fail_url": "https://example.com/fail",
    "back_url": "https://example.com/back"
  }'

Start here

Integration guides

Short, task-focused walkthroughs that lead straight into the V2 reference.

Start here

Integration checklist

Scope the methods, currencies and countries you need, then map each to the fields the create call expects.

Read guide 5 min

Authentication

Send your merchant-token header with merchant_id and merchant_site_id on every request.

Read guide 10 min

Your first payment

POST a sandbox payment, follow the redirect and read the status back from get-status.

Read guide 15 min

Handle webhooks

Expose a notification_link, verify the payload and make your handler idempotent.

Read guide Sandbox

Testing in sandbox

Sandbox mirrors live. Use the Demo provider to simulate approvals, declines and pending states.

Read guide Launch

Go live

Swap the base URL and credentials, re-run the checklist, and confirm your webhook endpoint is reachable from the internet.

Read guide

Resources

Developer resources

API reference

Endpoint schemas, examples, authentication notes, webhooks and code references for the Slikair V2 API.

Server libraries

Coming soon

Official server-side SDKs for Node, PHP and Python.

Example integrations

Coming soon

Reference implementations for payments, tokenization and payouts.

Testing tools

Sandbox credentials and the Demo provider for simulating every transaction outcome.

Postman collection

Coming soon

Importable collection covering payments, payouts and tokenization.

Changelog & API diff

Request access

Track breaking and additive changes between API versions.

Start building on slikair.

Grab sandbox credentials, run your first test transaction today, and talk to an integration engineer when you are ready for live.

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