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Cobaltmetrics API - Source Code

The Cobaltmetrics API provides access to citations, statistics, data sources, URI transmutation, and quotas found in documents online. The URI transmutation service finds URIs that directly or indirectly identify the same document. The API, in REST architecture, returns HTTP headers and authenticates with an API Key. Cobaltmetrics crawls the web to index hyperlinks and persistent identifiers as first-class citations.