Build a Document Summarizer Agent — build_doc_summarizer

Creates an LLM-powered document summarization workflow that processes PDF, DOCX, PPTX, TXT, or plain text input and returns structured markdown summaries.

Usage

build_doc_summarizer_agent(
  llm,
  summary_template = NULL,
  chunk_size = 4000,
  overlap = 200,
  verbose = TRUE,
  output = c("agent", "mermaid", "both"),
  direction = c("TD", "LR"),
  subgraphs = NULL,
  style = TRUE
)

Arguments

llm: A function that accepts a character prompt and returns an LLM response.
summary_template: Optional custom summary template in markdown format.
chunk_size: Maximum character length for document chunks (default: 4000).
overlap: Character overlap between chunks (default: 200).
verbose: Logical controlling progress messages (default: TRUE).
output: Output type: "agent" (default), "mermaid" for diagram only, or "both".
direction: Mermaid diagram direction: "TD" (top-down) or "LR" (left-right).
subgraphs: Optional named list for grouping nodes in Mermaid diagram.
style: Logical; apply default styling to Mermaid diagram (default: TRUE).

Value

A function that accepts file paths or text input and returns:

summary - The generated markdown summary
metadata - Document metadata if available
chunks - Number of processing chunks used
success - Logical indicating success

Examples

if (FALSE) { # \dontrun{
# Build document summarizer agent
summarizer_agent <- build_doc_summarizer_agent(
  llm = my_llm_wrapper,
  summary_template = NULL,
  chunk_size = 4000,
  overlap = 200,
  verbose = FALSE
)

# Summarize document
final_state <- summarizer_agent("https://github.com/knowusuboaky/LLMAgentR/raw/main/\
tests/testthat/test-data/scrum.docx")
} # }