Retrieve a single bibliography entry by ID. Returns the full YAML block.

Search bibliography entries across all fields: author, title, type, year, editor, container-title. Use ONE search term per call (e.g., "Pahlow" or "OLG Köln"). For multiple lookups, call this tool multiple times.

List all bibliography entries of a given CSL type (e.g., "legal_case", "book", "article-journal", "chapter").

Check if a citation ID exists in the bibliography. Fast boolean check before citing.

Get bibliography statistics: total entry count and breakdown by CSL type.

Add a new bibliography entry. Validates required fields per CSL type, checks for duplicate IDs, and creates a .bak backup before writing. Returns the created YAML block for confirmation.

Update fields of an existing bibliography entry. Only the specified fields are changed; all other fields remain untouched. Creates a .bak backup before writing.

Remove a bibliography entry by ID. Creates a .bak backup before writing.

Validate the entire bibliography file: YAML syntax, required fields per CSL type, duplicate IDs, and missing issued dates. Returns a list of errors and warnings.

Extract citations from Pandoc inline footnotes (^[...]) for verification tracking. This is a CITATION VERIFICATION tool, not bibliography management. It extracts citations so the LLM can systematically verify that each cited source actually supports the claim made in the text. Use registry_path to save/merge results into a JSON registry file (preserves existing claims and statuses). Re-running after text edits is safe: exact cite matches preserve claims/status, proximity matching (±5 lines) recovers claims when cite text changed. Each citation captures ~200 chars of surrounding context for claim formulation. Workflow: extract → set claims → verify each claim against the source using research tools → update status.

Batch update citation verification entries. Each entry can set claim, status, and/or note independently. The claim field records WHAT the text asserts at this citation point. The status tracks verification progress: pending → under_review → verified/disputed/not_found. If an ID does not exist and cite is provided, creates a new entry (for inline citations not in footnotes).

Show verification progress of a citation registry: counts by status and list of citations. Use filter_status to focus on specific statuses, filter_claim to search claims or find missing ones.

Retrieve one or more citation entries by ID. Returns full details including cite, context, claim, status, and note.

Update status (and optionally note) for multiple citations at once. Select entries either by a list of IDs or by filter (current status). At least one of ids or filter_status must be provided.