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Node Details

  • Name: fewShotPromptTemplate

  • Type: FewShotPromptTemplate

  • Version: 1.0

  • Category: Prompts

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Base Classes

  • FewShotPromptTemplate

  • BasePromptTemplate

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Parameters

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Inputs

  1. Examples (Required)

    • Type: string (JSON)

    • Description: Array of example objects with key-value pairs

    • Example:

      [
  { "word": "happy", "antonym": "sad" },
  { "word": "tall", "antonym": "short" }
]

  2. Example Prompt (Required)

    • Type: PromptTemplate

    • Description: Template for formatting individual examples

  3. Prefix (Optional)

    • Type: string

    • Description: Text appearing before the examples

    • Example: “Give the antonym of every input”

  4. Suffix (Required)

    • Type: string

    • Description: Text after examples, containing input variable

    • Example: “Word:

      \nAntonym:”

  5. Example Separator (Optional)

    • Type: string

    • Default: “\n\n”

    • Description: String used to separate examples

  6. Template Format (Optional)

    • Type: options

    • Options: [“f-string”, “jinja-2”]

    • Default: “f-string”

    • Description: Format style for template strings

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Functionality

  1. Example Processing

    • JSON parsing

    • Example formatting

    • Template application

    • Separator handling

  2. Template Management

    • Format selection

    • Variable extraction

    • Context building

    • Structure validation

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Use Cases

  1. Pattern Teaching

    • Response formatting

    • Style demonstration

    • Behavior guidance

    • Context setting

  2. Complex Tasks

    • Multi-step processes

    • Format standardization

    • Response structuring

    • Pattern recognition

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Integration Notes

  • Uses @langchain/core/prompts

  • Supports multiple example formats

  • Handles variable extraction

  • Manages template formatting

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Best Practices

  1. Example Design

    • Clear demonstrations

    • Consistent formatting

    • Diverse examples

    • Progressive complexity

  2. Template Structure

    • Compatible formats

    • Clear separators

    • Proper variables

    • Consistent style

  3. Performance Optimization

    • Efficient examples

    • Minimal redundancy

    • Clear instructions

    • Optimal spacing