Basiq vs Yodlee Core API

Basiq

Ten public OpenAPI files, an llms.txt index with Markdown twins and a free self-serve sandbox let an agent start on test data. Live access needs a 12-month plan with an unpublished platform access fee, no SLA or security.txt was found, and the privacy policy says collected content may be kept indefinitely.

Yodlee Core API

A public Swagger 2.0 file covers 98 operations with per-operation error codes, and tokens last 30 minutes and are bound to one end user. No price, service terms, status page, rate limit or SLA is published, there is no official server SDK, and the sandbox is limited to five preconfigured users with sample data.

Basiq

1. Send the API key verbatim after Basic in the Authorization header of POST /token. Base64-encoding it returns a 400.
2. Send basiq-version: 3.0 on the token request, cache the bearer token for its 60 minutes, and stay under 1,500 token requests per 5 minutes.
3. Send the account holder through the hosted Consent UI in a browser with a CLIENT_ACCESS token bound to their userId. The API alone cannot create a first connection on version 3.0.
4. Poll GET /jobs/{jobId} until verify-credentials, retrieve-accounts and retrieve-transactions all read success before reading accounts or transactions.
5. Follow links.next on GET /users/{userId}/transactions. A page holds at most 500 items, and pending transactions get new ids on each refresh.

Yodlee Core API

1. Get a token with POST /auth/token, sending Api-Version: 1.1 and the end user's loginName as headers and clientId and secret in a form body. Reuse it for up to 30 minutes
2. Use the admin loginName only for administrative calls such as webhook subscriptions. A token made with a user's loginName reads only that user's data
3. In the sandbox, pick one of the five preconfigured users. Registering new users is not supported there
4. Page GET /transactions with skip and top (1 to 500). Without dates it returns the last 30 days, and at most two years with fromDate and toDate
5. A person must link accounts in FastLink 4 first. Then read GET /providerAccounts for link status before GET /accounts
6. Subscribe to DATA_UPDATES or REFRESH webhooks, or poll GET /dataExtracts/events in windows of at most 60 minutes, and do not poll accounts in a loop