From a Java Webservices POST we can use the model class of 18 (component) to get the serial number attribute for each of the Linecards that show up in Chassis Manager.
The URL is
http://<OneClick_Server>:<port>/spectrum/restful/models
The XML body is
<?xml version="1.0" encoding="UTF-8"?>
<!--
CA Technologies, Inc.
One CA Plaza
Islandia, NY 11749 USA
Copyright (c) 2012 CA Technologies, Inc.
All rights reserved.
IN NO EVENT SHALL CA TECHNOLOGIES INCORPORATED BE LIABLE FOR
ANY INCIDENTAL, INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES
WHATSOEVER (INCLUDING BUT NOT LIMITED TO LOST PROFITS) ARISING OUT
OF OR RELATED TO THIS SOFTWARE, EVEN IF CA TECHNOLOGIES INCORPORATED
HAS BEEN ADVISED OF, KNOWN, OR SHOULD HAVE KNOWN, THE POSSIBILITY OF
SUCH DAMAGES.
-->
<rs:model-request throttlesize="5000"
xmlns:rs="
http://www.ca.com/spectrum/restful/schema/request"
xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.ca.com/spectrum/restful/schema/request ../../../xsd/Request.xsd ">
<rs:target-models>
<rs:models-search>
<rs:search-criteria
xmlns="
http://www.ca.com/spectrum/restful/schema/filter">
<filtered-models>
<equals>
<model-class>18</model-class>
</equals>
</filtered-models>
</rs:search-criteria>
</rs:models-search>
</rs:target-models>
<rs:requested-attribute id="0x10030" /> <!-- Serial Number -->
</rs:model-request>