Should I be concerned about rate limits?

Marketo limits users to 10,000 API calls per day. This can present an issue when making bulk queries. To help, use a query such as select * from myContact limit 10000. This will download only 10,000 contacts. You can then use the continueFromJobId parameter of the POST /bulk/query API to continue fetching the next 10,000 contacts. Continue chaining the queries together until you retrieve all of the contacts. Each API in Marketo returns approximately 300 leads/records.