What does Plaid do?
Plaid provides APIs and connection workflows used by applications to access financial information or other product-specific services. What it does in a particular application depends on the selected product, institution coverage, permissions and integration.
Data access is not a universal decision
The Plaid documentation organizes services by product. An integration can supply evidence to a workflow, but that evidence should not be described as automatically approving an applicant or verifying every fact about a business.
For example, account information and business ownership are different questions. A successful technical request does not establish that the person controlling an account is authorized to act for a particular company.
How a connection enters an application
An application establishes a connection flow, receives identifiers and retrieves the information appropriate to its selected products. Keep those identifiers linked to a stable applicant record. Store source and retrieval context alongside values used for review.
The exact interaction can differ by institution and configuration. Avoid implying that all users share credentials with the application or that every connection provides the same information. Follow product documentation for the actual flow.
Use data for a defined purpose
Decide what evidence is necessary before enabling additional data access. Make the applicant-facing purpose consistent with the use of the results. More data is not automatically better underwriting.
Separate raw or retrieved values from calculated metrics and reviewer conclusions. If a reviewer overrides or resolves a conflicting result, record the explanation rather than overwrite the source evidence.
Operate the integration reliably
Handle delayed responses, duplicate events and expired connections. A technical failure needs an operational path; it should not silently become a favorable result or an accusation of fraud. Identify who owns support and incident handling.
Keep privileged credentials protected and avoid retaining sensitive values in broad-access logs. Confirm permissions and retention for your application, not only the provider’s service.
A standard Link integration, step by step
Plaid’s Quickstart describes a typical flow: the application server creates a link token, the client opens Link, and a successful connection returns a temporary public token. The server exchanges it for an access token and uses the selected product’s API. Keep the privileged access token on the server rather than expose it in browser storage or general logs.
This account-connection flow is not universal across Plaid products. Follow each product’s documentation; identity-verification and other specialized services can use different identifiers and interactions. In a typical account-data application, maintain a mapping from the connection to the internal applicant and selected account. A later webhook belongs to that connection, not whichever applicant happens to be viewing the screen.
Costs and limitations
A product demonstration is not a promise of live coverage or unlimited free use. Consult the relevant documentation and terms for the product and account. See Plaid Sandbox and production cost boundaries for that distinction.
For an implementation decision, compare the question being answered, the evidence returned and the exceptions you must manage. This is an educational provider explanation, not a current Under partnership claim or a recommendation to purchase Plaid.