Start with the problem you are solving, software development quote not a list of screens. What kind of user will use it day to day, how many times a day, and how is the job done today? A vendor who understands the goal will suggest an alternative that costs less; a team that receives only a list of screens prices the list as written.
Define what is included as short scenarios: who does what, and what happens next. Equally important, write down what is out of scope. An explicit list of exclusions saves more friction later than the rest of the brief combined. Indicate as well which decisions are settled and which may still change — honest teams price those differently, and hiding it helps no one.
List the constraints. The list covers systems you must integrate with, the data you have and where it lives, security and ai automation company compliance rules, user volumes, which devices matter and stacks you cannot change. If a deadline is real, minimum viable product development company say why: an experienced team can often rearrange the plan to protect it, but not if the date is a secret.
Say what done means for the important items. Acceptance criteria do not require any formal notation: a short list setting out what must be true when the feature works will do. This one section compresses the review at the end by a surprising margin and removes the most common source of disputes.
To close, say what you expect back. Ask for a task-level breakdown, a written list of assumptions, whatever the team considers risky and an optimistic and a pessimistic figure. Read a wide range as useful information rather than evasion: llm integration it usually points to exactly which requirement is unclear. At that point clarify that area and ask again — the revised figure tends to be the one worth planning around.