Whitebeard: Photo library indexer

Whitebeard is the indexing agent for OuEstCharlie. It operates in index mode: scan an existing local photo library in place (no files moved), create XMP sidecars with ouestcharlie: fields, and write leaf manifests.

More about OuEstCharlie on the OuEstCharlie Blog

MCP tools: index_library and index_partition_scope, both incremental by default (force_full_index=False).

Project Layout

src/whitebeard/
  indexer.py    — core logic (no MCP dependency, independently testable)
  agent.py      — WhitebeardAgent(AgentBase) registering MCP tools
  __main__.py   — entry point: python -m whitebeard
tests/
  test_indexer.py

Installation

From PyPI (recommended)

pip install whitebeard

System prerequisites:

• macOS: brew install inih brotli gettext (required by pyexiv2 at runtime)
• Linux/Windows: no extra steps

From source (development)

Requires the sibling ouestcharlie-py-toolkit repo and a built image-proc binary (see its README_DEV.md):

uv venv
uv sync

Running Tests

Always use .venv/bin/python -m pytest:

.venv/bin/python -m pytest tests/ -v

Incremental vs Force Indexing

By default, both index_partition_scope and index_library run in incremental mode: photos already present in the partition manifest are carried over without re-processing. Only photos missing from the manifest are indexed. Photos deleted from disk are automatically removed from the manifest on the next run.

To re-process all photos regardless of their manifest state, pass force_full_index=True. To also regenerate XMP sidecars specifically, add force_extract_exif=True.

MCP Inspector

Use mcp dev from the repo root with a backend config pointing at a local photo folder:

WOOF_BACKEND_CONFIG='{"type":"filesystem","root":"/path/to/photos"}' \
    mcp dev src/whitebeard/__main__.py

Note: The default MCP Inspector timeout is too low for full-library indexing runs. Increase it in the Inspector settings before calling index_library or index_partition_scope.

Context