Features
- Local retrieval-only MCP over markdown docs (host synthesizes answers).
- Tools: list_docs, ask_docs, reindex over configured collections.
- Sources: local path or git URL; optional ref for git; include/exclude globs.
- Path-based layer filters for ask_docs scoping.
- Required default block; optional per-docs embedding_model, top_k,
  chunk_max_chars so specialized indexes can coexist.
- Embedder cache keyed by model name for multi-model configs.

Runtime
- Python 3.13+, mcp[cli] >= 2.0.0, sentence-transformers, numpy.
- Config at ~/.config/mcp-docs-ask/config.json (Windows: %USERPROFILE%).
- Git credentials on the machine for private URL sources; no tokens in config.

Tests
- Coverage for config resolution, tools, chunker, index, sync, and in-process
  MCP Client schema/annotation checks.