Searches federal contract opportunities in a posted-date window. postedFrom and postedTo are required, MM/dd/yyyy, at most one year apart. Returns normalised notices, each with its attachment links. The returned count is the length of the list actually returned, which is not the same as totalRecords across all pages.

Retrieves a single notice by its solicitation number, within a posted-date window. Abstains explicitly when the number is not found in that window, because 'not in this window' and 'does not exist' are different answers.

Returns the downloadable attachment URLs for one notice. An empty list means the notice carries no attachments, which is a real and common state and is reported as zero rather than as an error.

Downloads a single attachment by its resource URL, as returned by list_attachments. Returns UTF-8 text when the document is text, and otherwise returns the content type and byte length without guessing at the contents. Binary formats such as PDF are reported, not silently decoded into noise.

Reports which mode the server is in and where its data is coming from. Call this first when results look surprising.