Create a Signature for LLM Operations

The primary function for creating signatures. Accepts either DSPy-style string notation or explicit arguments.

Usage

Signature(inputs = list(), output_type = NULL, instructions = "")

signature(x = NULL, inputs = NULL, output_type = NULL, instructions = "", ...)

Arguments

inputs: List of input specifications (when using explicit notation)
output_type: An ellmer type object (when using explicit notation)
instructions: Optional instructions for the operation
x: Either a string in DSPy format ("inputs -> output") or NULL
...: Additional arguments

Value

A Signature object

Examples

# String notation (recommended for simple cases)
sig1 <- signature("text -> sentiment")
sig2 <- signature("context, question -> answer: string")
sig3 <- signature("text -> label: enum('positive', 'negative', 'neutral')")

# Explicit notation (for complex cases)
sig4 <- signature(
  inputs = list(
    input("text", description = "Text to analyze")
  ),
  output_type = ellmer::type_object(
    sentiment = ellmer::type_string(),
    confidence = ellmer::type_number()
  ),
  instructions = "Analyze the text"
)