Analytics & BI

Piwik Data Extractor

Vern's Piwik extractor imports a new user's analytics & bi data — users, access control actions, access control meta site permission user, and apps — into your product through a single managed migration, handling Piwik's auth, pagination, and rate limits for you. It's built for teams onboarding customers off Piwik who want their data in your app from day one.

Start migration

Browse all extractors

Piwik

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 Piwik objects (14 total), including: Access Control Actions, Access Control Meta Site Permission User, Apps, Apps Details, Audit Log Entries, Container Settings Settings, Meta Sites, Meta Sites Apps, Meta Sites Apps With Meta Sites, Modules, Tracker Settings, User Groups, Users, and Users Me.

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 analytics & bi system (Appfigures, Appfollow, Chartmogul) 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 Piwik once during onboarding — their credentials never touch your code. Piwik 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 Piwik's authentication guide.

Pagination

Vern detects and handles Piwik'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

Piwik enforces its own API rate limits. 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 Piwik
curl -X POST https://app.vern.so/api/v1/migrations \
  -H "x-api-key: $VERN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "name": "Piwik → Postgres", "source": "Piwik" }'
→ { "migration_id": "mig_..." }
2. Generate the extraction recipe (pulls live via the Piwik API)
curl -X POST https://app.vern.so/api/v1/migrations/$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 piwik_export.csv

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

View docs

Common questions

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

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

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