• Specifications
  • Search/Retrieve / CQL / Explain / Scan
  • Diagnostics / Extra Data / Transport/ Conformance
  • XML files (including WSDL)
    • for version 1.1
• Registered Components
  • Context sets / Schemas / Profiles / Extensions / Diagnostic list 
• Resources
  • Tools / Implementations / Implementors / Servers / Products/Services/ Implementor Agreements / SRU Bibliography
    Short Topics
• Community
  • Listserv
• Related Specifications
  • SRU Record Update
    
• Other
  • An SRU web site in Japanese

SRU is a standard XML-focused search protocol for Internet search queries, utilizing CQL (Contextual Query Language), a standard syntax for representing queries. Note about version: 1.2 is the current SRU version. These specifications are for both versions, 1.1 and 1.2, but are oriented to version 1.2 with version 1.1 exceptions annotated. For a full version 1.1 specification see Version 1.1 Archive.