Should I put keywords from the job description in my summary?

Yes, when they truthfully describe you. The summary is one of the first places a recruiter reads, and applicant tracking systems often search the whole resume for the terms used in the advert.

How to do it well:

• Use the advert's exact wording for your job title and main skills, such as "accounts payable" rather than "supplier payments" if that is their term.
• Include the most important two to four keywords, not twenty.
• Make sure each keyword is backed up in your experience or skills section.

Example: an advert asks for "IFRS reporting", "consolidation" and "SAP". Summary: "Financial reporting accountant with 6 years preparing IFRS consolidated statements for a group of 12 entities in SAP."

Avoid lists of disconnected keywords. They read badly and do not help if the rest of the resume does not support them.