Provides license metadata lookups and compatibility checks for open source projects through a cached oracle approach. Instead of having your AI agent scrape SPDX or parse license texts on every query, this server maintains a pre-built snapshot of license data and exposes it over stdio. The weiseer project claims this cuts token costs and latency by 100x to 1500x compared to having Claude fetch and analyze licenses directly. You'd reach for this when building tools that need to verify license compatibility across dependencies, check specific license terms, or validate licensing choices without burning through API quota. Works with Claude Desktop, Cursor, Cline, Continue, and Windsurf via standard MCP configuration.