Linking Twelve Data as a source
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Contents
This source is currently in alpha. The interface and available tables may change.
The Twelve Data connector syncs stocks, etfs, indices, 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.
Import market data from Twelve Data: instrument catalogs, historical prices, quotes, dividends, splits, and earnings.
You'll be asked for:
- API key
- Symbols: comma-separated list of up to 100 symbols to sync in the time series, quotes, dividends, splits, and earnings tables. Each Twelve Data request is charged per symbol, so a longer list uses more of your plan's API credits.
- Time series interval: choose between 1min, 5min, 15min, 30min, 45min, 1h, 2h, 4h, 1day, 1week and 1month.
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.
All Twelve Data tables are full refresh. Each sync replaces the contents of the table.
Configuration
| Option | Description |
|---|---|
API keyType: password Required: True | |
SymbolsType: text Required: True | Comma-separated list of up to 100 symbols to sync in the time series, quotes, dividends, splits, and earnings tables. Each Twelve Data request is charged per symbol, so a longer list uses more of your plan's API credits. |
Time series intervalType: select Required: True | |
Time series start dateType: text Required: False | Backfill time series history from this date. Leave empty to sync only the most recent 5,000 bars per symbol. |
Supported tables
| Table | Description | Sync method | Incremental field | Primary key |
|---|---|---|---|---|
stocks | Catalog of every stock listing Twelve Data covers, one row per symbol per exchange listing. | Full refresh | — | — |
etfs | Catalog of every ETF Twelve Data covers, one row per symbol per exchange listing. | Full refresh | — | — |
indices | Catalog of market indices Twelve Data covers. | Full refresh | — | — |
forex_pairs | Catalog of foreign exchange currency pairs available at Twelve Data. | Full refresh | — | — |
cryptocurrencies | Catalog of cryptocurrency pairs available at Twelve Data. | Full refresh | — | — |
exchanges | Catalog of stock exchanges available at Twelve Data. | Full refresh | — | — |
time_series | Historical OHLCV bars for each configured symbol at the configured interval. | Incremental, Full refresh | datetime | — |
quotes | Latest quote snapshot for each configured symbol at sync time. | Full refresh | — | — |
dividends | Full dividend payout history for each configured symbol. | Full refresh | — | — |
splits | Full stock split history for each configured symbol. | Full refresh | — | — |
earnings | Earnings report history for each configured symbol, with EPS estimates and actuals. | Full refresh | — | — |
Troubleshooting
- If the connection fails with an authorization error, the API key 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.