I know an investor usually ask for a Drag-Along Right in the contract, who obliges minority shareholders to sell the company if the majority want so. Sometimes they could want to oblige you also if they aren't majority shareholders.
What are the other clauses that require particular attention by the founders?
Can someone submit or link a typical contract with an investor?
Here is a good recent post on a founder friendly term sheet - where the OP makes the following mods to "boilerplate" sheets:
You should be clear about what you mean as a 'contract'. My preference is to sell common shares, and then have all the terms in the Unanimous Shareholder's Agreement (which is the governing rules of the company), where they apply equally to all shareholders.
My list of standard terms in the Unanimous Shareholder's Agreement includes: