Linking OpenCorporates as a source
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This source is currently in alpha. The interface and available tables may change.
The OpenCorporates connector syncs companies, officers, and more into the PostHog data warehouse, so you can analyze them alongside your product data.
Prerequisites
Credentials that can read the data you want to sync. PostHog only reads data, so read access is enough.
Adding a data source
- In PostHog, go to the Sources tab of the data pipeline section.
- Click + New source and click Link next to this source.
- Enter your credentials (see Configuration below) and click Next.
- Select the tables you want to sync, choose a sync method and frequency, then click Import.
Once the syncs are complete, you can start querying this data in PostHog.
Enter your OpenCorporates API token and a search term to pull matching company and officer records.
Get an API token from OpenCorporates. The free open-data tier is limited to around 50 requests a day and 200 a month, so scope your search with a jurisdiction to stay within it.
You'll be asked for:
- API token
- Search term: openCorporates is a search API, not a full export — this matches against company and officer names.
Sync modes
Each table can be synced in one of several modes, depending on what the source supports:
- Webhook (when available) – the source pushes changes to PostHog in real time. Fastest freshness, lowest ongoing cost, and the only mode that reliably captures updates and deletes.
- Incremental – only new or updated rows are synced on each run, using a cursor field (such as an
updated_attimestamp). Cheaper than a full refresh, but deletes aren't captured. - Append only – new rows are appended using a cursor field; existing rows are never updated. Ideal for immutable, append-only tables like event logs.
- Full refresh – the whole table is reloaded on every sync. Use it when a table has no reliable cursor or when you need deletions reflected.
See sync methods for a full explanation of how each mode works and how to choose between them.
Some OpenCorporates tables sync incrementally, so later runs only fetch new or updated rows. The rest are full refresh.
Configuration
| Option | Description |
|---|---|
API tokenType: password Required: True | |
Search termType: text Required: True | OpenCorporates is a search API, not a full export — this matches against company and officer names. |
Jurisdiction code (optional)Type: text Required: False | Restrict the search to one jurisdiction, e.g. |
Supported tables
| Table | Description | Sync method | Incremental field | Primary key |
|---|---|---|---|---|
Companies | Companies matching the configured search term (and optional jurisdiction), aggregated from official national company registries. | Incremental, Full refresh | updated_at | — |
Officers | Officers (directors, secretaries, and agents) matching the configured search term (and optional jurisdiction). | Full refresh | — | — |
Troubleshooting
- If the connection fails with an authorization error, the API token is wrong, expired, or has been revoked. Create a new one, then reconnect the source.
- If a table syncs no rows, the credential may not have access to that data. Check its permissions, then reconnect the source.
If your sync is failing or data looks wrong, see the Data warehouse troubleshooting guide. If that doesn't help, contact support – we're happy to help.