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Allidian

For developers

One payment API, built the way developers expect.

Create checkouts, refunds, customers, subscriptions and invoices through one REST API with predictable errors, idempotency keys and signed webhooks. The payment provider behind it can change without you rewriting your integration.

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No sales call required. Free developer sandbox.

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What gets in the way

  • Every payment provider has its own API, objects and edge cases

  • Retries must never charge a customer twice

  • Your system needs reliable events, not polling

Allidian

How we help

REST API and OpenAPI spec

Versioned endpoints, typed errors, request logs and a machine-readable spec.

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Idempotency built in

Send an Idempotency-Key with every write; retries return the original result.

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Signed, retried webhooks

HMAC-signed events with automatic retries and replay from the dashboard.

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Self-service

Apply once. Get matched. Integrate once. Accept payments.

  1. 1

    Get test keys

    Sign up and create a sandbox key.

  2. 2

    Make your first payment

    Copyable Node, Python, PHP and curl examples.

  3. 3

    Verify webhooks

    Check signatures with our examples and run the connection tests.

  4. 4

    Switch to live keys

    Same API, same code, once your provider activates you.

Allidian is payment software. Payments are processed by a licensed provider under your own account with them, and the provider decides whether to approve your business. How provider-powered payments work

Frequently asked questions

Is there a sandbox?

Yes, free and with no time limit, including test cards for declines and 3D Secure, connection tests that check your keys and webhook endpoint, and event replay.

Can I restrict what an API key can do?

Yes. Restricted keys carry only the scopes you choose, and nobody can create a key with more access than their own role has.

Do you have SDKs?

The guides include copyable code for Node, Python, PHP and curl, and the OpenAPI spec works with standard client generators.

Related

The future of payments is connected.

Build on infrastructure that can evolve with new providers, markets, payment methods and intelligent commerce. Start free in sandbox today.

Start buildingView documentation

No sales call required. Create an account and access your developer sandbox.

  • Payment succeeded$248.00 · Hosted checkout
  • Invoice paidINV-0142 · $5,616.00
  • Webhook deliveredpayment.succeeded · 200 OK