NASA CDAWeb data access for heliophysics — browse observatories, inspect parameters, fetch CDF data.
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process.env. You'll be asked to provide them before it can run.XHELIO_CDAWEB_CACHE_DIR— Configure via --cache-dir (MCP server), the environment variable, or cdawebmcp.configure() (library):[](https://m8ven.ai/mcp/huangzesen-xhelio-cdaweb-1vsr3a)