Plaid rate limits most API endpoints to prevent malicious or inadvertent request patterns from affecting overall API performance. API requests are rate limited by access_token and product. The exact limits are dynamic, but they generally span 60 seconds and allow at least 30 requests per access_token per product in that window. For example, making 10-12 /connect/get API requests per day for a single access_token won't be limited.
Do note that Plaid’s webhooks are designed with this in mind: A Code 2 webhook will be fired whenever there are new transactions available for an access_token, so we suggest making requests only after you have received a Code 2 webhook.