Public Web API

This guide describes the public API for the Outer Planets Unified Search (OPUS) tool of the PDS Ring-Moon Systems Node. It was produced on Oct 17, 2026 and covers OPUS version 3.23.1.dev1.

The API is served from https://opus.pds-rings.seti.org; every entry point below is named relative to that host. Nothing here needs an account, a key or a session: each request stands on its own.

• Basic Concepts: Metadata Fields, Retrieving, and Searching
  • API Format
  • The OPUS Database
  • Retrieving Metadata
  • Performing Searches
• API Calls
  • Return Formats
  • Error Responses
  • Getting Metadata
  • Getting Data
  • Getting Information About Search Results
• Available Metadata Fields