Search for texts in the National Library's digital collection.

Args: query: Search query string limit: Maximum number of results to return (default: 10) from_year: Start year for search period (optional) to_year: End year for search period (optional) media_type: Type of media to search. Options: 'digavis' (newspapers), 'digibok' (books), 'digitidsskrift' (journals). Default: 'digavis'

Returns: JSON string containing search results with metadata

Get word frequency trends over time using NGram analysis.

Args: words: List of words to analyze corpus: Corpus type. Options: 'bok' (books), 'avis' (newspapers). Default: 'bok' from_year: Start year (default: 1810) to_year: End year (default: 2020) smooth: Smoothing parameter for the frequency curve (default: 1)

Returns: JSON string containing frequency data over time

Find concordances (contexts) for a word in a specific document.

Args: urn: URN identifier for the document word: Word to find concordances for window: Number of words before and after the match (default: 25) limit: Maximum number of concordances to return (default: 100)

Returns: JSON string containing concordance results

Find concordances with structured output (no HTML formatting).

Returns clean format with separate before/target/after fields instead of HTML-formatted text. This is useful for programmatic analysis where you need the matched word separated from context.

Args: urn: URN identifier for the document word: Word to find concordances for window: Number of words before and after the match (default: 12, max: 24) limit: Maximum number of concordances to return (default: 100)

Returns: JSON string containing structured concordance results with fields: - dhlabid: Document identifier - before: Text before the matched word - target: The matched word itself - after: Text after the matched word

Find collocations (words that appear near the target word) in a document.

Args: urn: URN identifier for the document word: Target word to find collocations for window: Size of context window (default: 5) limit: Maximum number of collocations to return (default: 100)

Returns: JSON string containing collocation statistics

Look up different forms of a Norwegian word.

Args: word: The word to look up

Returns: JSON string containing different word forms

Look up the lemma (base form) of a Norwegian word.

Args: word: The word to look up

Returns: JSON string containing lemma information

Search for images in the National Library's digital collection.

Args: query: Search query string limit: Maximum number of results (default: 10) from_year: Start year (optional) to_year: End year (optional)

Returns: JSON string containing image search results with URLs

Get statistical information about a corpus of documents.

Args: urns: List of URN identifiers for documents

Returns: JSON string containing corpus statistics