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Ignite UI CLI 15 (releases 15.0.0 through 15.5.0) turns the CLI into the setup layer of the Ignite UI AI-assisted development toolchain. Highlights: the Ignite UI CLI MCP server with documentation and API lookup for AI assistants across Angular, React, Web Components, and Blazor; the ai-config command for one-command Agent Skills and MCP configuration; Blazor project scaffolding via dotnet new igb-blazor; and modernized Angular templates on signals and Angular 22. CLI 15.0.0 removes the legacy igx-ts-legacy, ig-ts, and igr-es6 project types.
MCP vs RAG: MCP-based retrieval beats a vector-indexed RAG on grounding and citation depth, but it's slower and more expensive. Use it for correctness-critical requests; keep RAG for high-volume, latency-sensitive ones.
MCP vs RAG is the central tradeoff this report measures: retrieval-augmented generation over a static vector index is the default architecture for AI documentation assistants, but it degrades silently as source documentation changes faster than the index is rebuilt. This report benchmarks that architecture against a Model Context Protocol (MCP) server that queries Ignite UI documentation and API definitions, using Anthropic Claude as the orchestrating model in both configurations.