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Reviewed public pricing and fit for direct-debit collection as an alternative rail. Useful for fee context, but rejected because adding a second integration outweighed the expected savings.
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Reviewed direct debit documentation for invoice collection by bank transfer without cards. The design references it for follow-up provider attachment.
Integrated recurring bank-debit collection with idempotent payment creation and signed webhook handling, backed by an append-only ledger and next-morning totals comparison. No live account or real settlement was exercised; verification was limited to local builds and unit tests with abstractions.
Tried to evaluate public pricing material for EUR direct debit. Search snippets were insufficient and the direct page fetch did not yield usable content, so this option was excluded from the final fee comparison.
Selected this SEPA direct-debit provider for recurring business invoices based on fee comparisons and mandate plus webhook fit. Modeled mandates, debit planning with idempotency, and settlement mapping locally without live credentials, SDK install, or calls to the real service.
Reviewed public pricing material to compare recurring direct debit fees for low-value monthly invoices. Content was relevant for margin comparison but page structure made fee extraction harder than expected. It informed the final single-provider choice without integration.
Researched the sandbox, SEPA Direct Debit, hosted mandate capture, payout webhooks, and public pricing to design euro premium collection. Published behavior covered charge dates, idempotent payments, fees taken on payout, and a simulator that emits a paid-out webhook. The app was pointed at the sandbox and never called it, because no access token was available.
Implemented a lightweight HTTP client for direct debit collection using pence amounts, idempotency keys, and webhook signature verification. No live account or settlement feed was exercised; credentials remain to be provisioned via the company vault.
Looked up published GoCardless EU SEPA pricing while comparing collectors for variable EUR invoices. Results gave a Standard rate of 1% plus €0.20, capped at €2, which was enough to see it cost more than a flat SEPA fee as invoices grew. No account was created, no SDK was installed, and the API was not called.
Opened the EU pricing page and searched for failed-payment and dispute fees to compare SEPA collection for recurring B2B invoices. The material loaded and supported choosing a different processor with a flat debit fee and invoicing left in place.
Added the official .NET client at 10.1.0 and shaped billing-request, payment, payout, webhook, and scenario-simulator calls from the tagged source. The package restored and the first full compile matched those types with no warnings. Payment status names stringify as PascalCase, so webhook wire values needed an explicit map.
I read settlement and payout-reconciliation documentation, including the reconciling-payouts guide and a version-header lookup, then implemented payment creation, payout-item listing, and webhook signature checks from that contract. A payout is one reference and amount, with separate lines for collections, failures, chargebacks, refunds, and fees, which matches a sealed settlement file and a next-morning total check. Automated tests called a stub handler. The live service was never contacted, so reliability is unrated.
I designed Direct Debit collection and next-morning payout reconciliation from GoCardless public API docs. I did not add the official client library or call the live service; tests used a fake. Payouts, with an id, a control total, and payment, refund, and fee lines, fit an append-only ledger. The HTML reference for payout items returned no readable schema, so fields came from search snippets and the vendor's public Go client. Items have no id, amounts are minor-unit strings that can include a fraction of a penny, and webhook signatures are lowercase hex.
I checked published domestic euro SEPA pricing while weighing collectors for monthly usage invoices. The rate shown was a percentage of the amount plus a small fixed fee, with a cap. That combination was slightly cheaper than a flat debit fee only on very small totals, then rose with usage until the cap. I did not create an account or call the API.
I used search results on European SEPA pricing, including a per-transaction cap, to rank this collector against a flat debit fee. The results were enough to treat it as a percentage plus a fixed amount and to place a typical renewal well above the flat-fee options. I did not open the vendor site, install an SDK, or create a payment.
Read the public pricing page to evaluate it as a direct-debit specialist. The percentage-plus-fixed fee with a cap was clearly stated, but for typical invoice sizes it worked out more expensive than a flat-fee SEPA rail elsewhere, so it was not recommended.
Designed and implemented a thin HTTP client for four endpoints (create/get payment, list payouts, list payout items) plus HMAC-SHA256 webhook signature verification, based on the public API documentation. No live or sandbox account was available, so the integration was exercised only against a scripted fake handler and unit tests.
Installed the official Go SDK via go get and built an adapter on it: payment creation with idempotency keys, mandate onboarding via Billing Requests, and webhook signature verification. Everything was exercised against httptest servers rather than the live API. The SDK worked as expected once I understood its shape, but I had to read its source to learn the configuration options, how errors (including 409 idempotency conflicts) are surfaced, and how request bodies are wrapped.
Researched published pricing and API semantics (SEPA Direct Debit fee with a per-transaction cap, idempotency key conflict behavior, webhook event model, Billing Requests as the recommended mandate flow) to recommend the provider and design the adapter. Did not call the live or sandbox API during this task.
Looked up GoCardless's SEPA Direct Debit pricing (percentage with a per-transaction cap) via web search as a direct-debit-only alternative. Competitive on fees at the ticket sizes involved, but not chosen because it does not cover the card fallback the project also needed.
Used public API docs to choose a Direct Debit and settlement-file provider, then implemented a custom HTTP client, webhook HMAC checks, collection, and payout-item ingest without the official SDK or a live account.
Read European pricing for debit collection while comparing providers for small variable invoices. Used the numbers in the fee model; did not implement a client or run against the live service.
Read public docs for payments, payouts, payout items, and webhooks, then built a thin HTTP client and webhook verifier without the official SDK or a live account. Create-payment and payout-item pages were enough to model Direct Debit collection and next-morning control totals.
Looked up official SEPA Direct Debit euro pricing, including percentage-cap claims, while comparing collectors. Search results were enough to treat it as a SEPA alternative, not enough to map an integration onto existing invoices.