Is Capital One supported?

Yes. Capital One connects securely through Plaid, so you can link your accounts and start syncing in minutes.

How often does Capital One sync to Sure?

Syncs are event-driven: Plaid notifies Redbark when new Capital One data is available, and your Sure updates soon after, typically within a few hours of a transaction posting.

Is my Capital One connection read-only?

Yes. Plaid connections are read-only. Redbark can read transactions and balances, and can never move money or change your Capital One accounts.

Does Redbark store my Capital One data?

No. Redbark uses a pass-through architecture: your Capital One transactions are proxied live to Sure. We store consent records, encrypted tokens and minimal account metadata, never transaction amounts, descriptions or balances.

Is Redbark independently security tested?

Yes. Redbark was penetration tested in July 2026 by Project Black, a CREST-accredited Australian security firm, covering the web app, REST API, MCP server and admin console. The test returned zero critical and zero high-risk findings, and every finding raised was remediated and confirmed closed on retest.

Do I need to run a container for Capital One?

No. Sure supports Redbark natively from v0.7.3-alpha.6, so an API key is all it takes. The older sure-sync container still works for existing setups but is no longer the recommended path.

Where does my Capital One data live?

In your own Sure instance. Redbark proxies Capital One data live at sync time and keeps no copy of your balances or transactions.

United States · Self-hosted finance

Sync Capital One to Sure

Sync Capital One transactions into your self-hosted Sure instance over Plaid. Sure has a native Redbark integration built in, so you paste an API key and it pulls your Capital One accounts directly.

Connect Capital One free See pricing

No credit card required

Checking Account

Capital One

Savings Account

Capital One

Credit Card

Capital One

Personal Finance

Account: Everyday

SyncingLast synced: 2 min ago

Self-hosted finance

Capital One transactions in self-hosted Sure

Sure talks to Redbark directly for Capital One balances and transactions on every sync, deduplicating by Redbark transaction ID. The first sync pulls 90 days of history, then it runs incrementally with a 7 day lookback.

Get started

Sync Capital One to Sure in three steps

Connect Capital One

Link your Capital One accounts to Redbark through Plaid, then create a Redbark API key in Settings → API & MCP.

Add Redbark in Sure

In Sure, go to Settings then Providers, find the Redbark panel, paste your API key and save. Needs Sure v0.7.3-alpha.6 or later.

Link your accounts

Your Capital One accounts appear for setup. Link each one to an existing Sure account or create a new one, and skip any you do not want. Sure syncs them automatically from then on.