Payments & Billing

GoCardless Data Extractor

Vern's GoCardless extractor imports a new customer's payments and billing data — payments, refunds, mandates, and payouts — into your product as reconciled, normalized tables. It's built for teams onboarding users off GoCardless, so their transaction history and active subscriptions come across cleanly at signup.

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GoCardless

SaaS API (REST)

Managed auth, retries, and throttling

Normalized JSON, CSV, and DB-ready output

Cleaned JSON, CSV, and DB-ready output

Export coverage

Know exactly what Vern pulls before you migrate.

Objects Vern extracts

Vern extracts the full set of queryable GoCardless objects (4 total), including: Mandates, Payments, Payouts, and Refunds.

Output schema

Normalized JSON per object with referential keys preserved, so the relationships between your user's records survive the import. Timestamps are returned in ISO 8601. Delivered as JSON or CSV, or loaded straight into your own application database or pushed to your API — whatever your product expects.

Where it can land

Your own application database (Postgres, MySQL), a direct push to your API or webhook, or JSON/CSV files, plus another payments & billing system (Bunny, Inc., Chargebee, Chargedesk) when a user is switching tools.

Source details

Built for the source type shown above, with extractor content refreshed from the collection record.

Managed by Vern

The details you normally have to build yourself.

Authentication

API key / access token. Your user pastes their GoCardless API key once when they sign up; Vern stores it encrypted and attaches it to every request, handling header signing and retries so you never touch the raw credential. See GoCardless's authentication guide.

Pagination

Vern detects and handles GoCardless's paging model (cursor, page-number, or offset) internally and returns one consistent, de-duplicated result set — so you import a user's complete data without ever managing page tokens.

Rate limits and gotchas

GoCardless enforces its own API rate limits (see GoCardless's rate-limit docs). Vern queues and throttles requests internally so importing a new user's data never trips a 429 — even on a large account.

API-key sources rarely surface their true rate ceilings until you hit a 429 mid-import, and many silently cap page size. Vern throttles to stay under the limit and normalizes paging so a partial pull never lands a user in your product with missing data.

API quickstart

1. Create a migration for GoCardless
curl -X POST https://app.vern.so/api/v1/migrations \
  -H "x-api-key: $VERN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "name": "GoCardless → Postgres", "source": "GoCardless" }'
→ { "migration_id": "mig_..." }
2. Generate the extraction recipe (pulls live via the GoCardless API)
curl -X POST https://app.vern.so/api/v1/migrations/$MIGRATION_ID/runs \
  -H "x-api-key: $VERN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "kind": "generate", "extract_via_api": true }'
3. Run the approved extraction
curl -X POST https://app.vern.so/api/v1/migrations/$MIGRATION_ID/runs \
  -H "x-api-key: $VERN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "kind": "execute" }'
4. Download the normalized CSV export
curl https://app.vern.so/api/v1/migrations/$MIGRATION_ID/exports/{template} \
  -H "x-api-key: $VERN_API_KEY" -o gocardless_export.csv

A cleaner way to extract without rebuilding source-specific plumbing.

View docs

Common questions

Can I keep a user's GoCardless data in sync after the first import? Vern supports re-running an import on demand; incremental change tracking depends on what GoCardless's API exposes for each object.

Can I move a user from GoCardless to Bunny, Inc.? Yes — Vern normalizes the GoCardless data model into typed tables that map cleanly onto Bunny, Inc. and into your own product.

What does it cost to read the GoCardless API? GoCardless's own API access follows GoCardless's pricing/plan; Vern is billed separately per import. Check GoCardless's developer docs for their current limits.