Help with API's

I have a connect that gives me the token, however in the query I have to include the token eg

step 1:
post - email_addess and password
Gives me a token number (I have this working)

Step 2
get - products?product=abc?token=token

token is returned in step one, how can I pass this on step 2 as the token changes every 30 minutes.

any smart people have any ideas?