This add-on allows you to automate searching for the 'best' MARC record using OCLC'S API. The starting point is a spreadsheet that contains a list of ISBNs or LCCNs. You can configure the match criteria (e.g. records we hold, 042=pcc, 040=dlc) and the MARC fields you would like written to the spreadsheet when a match is found. You will need your OCLC API key. After you have installed the add-on and entered the OCLC API key you can generate a sample configuration tab and a tab that contains a test searches. Select the tabs in the two drop-down boxes and click the 'Start Search' button to launch the search.