v0.4.0

v0.4.0 Release Notes

This release introduces MCP server support for ExStruct, enabling agent tool
integration with a stdio server, plus new extraction utilities, policies, and
expanded tests and documentation.

Please read the official documentation for detailed setup instructions.
MCP Server

Highlights

• Added MCP stdio server (exstruct-mcp) with tools:
  • exstruct_extract
  • exstruct_read_json_chunk (cursor + filters for large outputs)
  • exstruct_validate_input (pre-checks for files and COM availability)
• Introduced MCP path policy (allowlist + deny globs), output conflict handling
  (--on-conflict), and optional warmup for latency reduction.
• Added typed extraction options for MCP runs (pretty/indent and side outputs),
  and clarified file validation errors.
• Improved openpyxl border scanning (deferred column shrink) for late-table
  detection; added backend selection for border clustering.
• Documentation updates for MCP setup and agent configuration (site nav and
  README updates), plus expanded tests and CI dependency installation.

Notes

• MCP dependencies are optional: install with pip install exstruct[mcp].
• read_json_chunk enforces file paths and chunk size limits; use sheet/
  filter when outputs are large.