Project Management

Trello Data Extractor

Vern's Trello extractor imports a new user's project management data — users, actions, boards, and cards — into your product through a single managed migration, handling Trello's auth, pagination, and rate limits for you. It's built for teams onboarding customers off Trello who want their data in your app from day one.

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Trello

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 Trello objects (7 total), including: Actions, Boards, Cards, Checklists, Lists, Organizations, and Users. 1 of these support incremental change tracking, so syncs pull only what changed.

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 project management system (Aha, Basecamp, ClickUp) 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

OAuth 2.0 (Authorization Code flow). Your new user authorizes Trello once during onboarding — their credentials never touch your code. Trello access tokens are short-lived and refresh tokens roll on the provider's own schedule, so Vern manages the full token lifecycle and refresh and the import never drops midway. See Trello's authentication guide.

Pagination

Vern detects and handles Trello'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

Trello enforces its own API rate limits (see Trello'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.

OAuth-based sources expire access tokens frequently and require a working refresh flow — a dropped refresh is the most common cause of a half-finished import. Vern owns the refresh loop so a new user's onboarding completes even on a long extraction.

API quickstart

1. Create a migration for Trello
curl -X POST https://app.vern.so/api/v1/migrations \
  -H "x-api-key: $VERN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "name": "Trello → Postgres", "source": "Trello" }'
→ { "migration_id": "mig_..." }
2. Generate the extraction recipe (pulls live via the Trello API)
curl -X POST https://app.vern.so/api/v1/migrations/$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 trello_export.csv

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

View docs

Common questions

Can I keep a user's Trello data in sync after the first import? Yes — 1 Trello objects support incremental change tracking, so after the first full import Vern pulls only what changed on re-run.

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

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