Use API to get DMARC and SPF Policy

As part of rolling out DMARC I'm after seeing all of my domains and what DMARC policy they have (i.e. No record, p=none, p=reject or p=quarantine). This is available via the Manage domains page but Im after this via API so I can automate it. Also after this showing the SPF record, if there is one and whether its a soft or hard fail.