The account API is just for reading, not writing. Any authenticated user has access.
Returns info about the current Basecamp account, its subscription, and the default post and attachment categories. Includes:
<account>
<id type="integer">1</id>
<name>Your Company</name>
<account-holder-id type="integer">1</account-holder-id>
<primary-company-id type="integer">1</primary-company-id>
<ssl-enabled type="boolean">true</ssl-enabled>
<email-notification-enabled type="boolean">true</email-notification-enabled>
<time-tracking-enabled type="boolean">true</time-tracking-enabled>
<updated-at type="datetime">2009-10-09T17:52:46Z</updated-atcription>
<subscription>
<name>Premium</name>
<writeboards type="float">Infinity</writeboards>
<projects type="integer">100</projects>
<storage type="integer">32212254720</storage>
<ssl type="boolean">true</ssl>
<time-tracking type="boolean">true</time-tracking>
</subscription>
<default-attachment-categories>
<category>Documents</category>
<category>Pictures</category>
<category>Sounds</category>
</default-attachment-categories>
<default-post-categories>
<category>Design</category>
<category>Code</category>
<category>Copywriting</category>
<category>Transcripts</category>
<category>Assets</category>
<category>Miscellaneous</category>
</default-post-categories>
</account>