Class GenerativeAgent

Implementation of a generative agent that can learn and form new memories over time. It extends the BaseChain class, which is a generic sequence of calls to components, including other chains.

Example

const tommie: GenerativeAgent = new GenerativeAgent(
  new OpenAI({ temperature: 0.9, maxTokens: 1500 }),
  new GenerativeAgentMemory(
    new ChatOpenAI(),
    new TimeWeightedVectorStoreRetriever({
      vectorStore: new MemoryVectorStore(new OpenAIEmbeddings()),
      otherScoreKeys: ["importance"],
      k: 15,
    }),
    { reflectionThreshold: 8 },
  ),
  {
    name: "Tommie",
    age: 25,
    traits: "anxious, likes design, talkative",
    status: "looking for a job",
  },
);

await tommie.addMemory(
  "Tommie remembers his dog, Bruno, from when he was a kid",
  new Date(),
);
const summary = await tommie.getSummary({ forceRefresh: true });
const response = await tommie.generateDialogueResponse(
  "USER says Hello Tommie, how are you today?",
);

Hierarchy

BaseChain
- GenerativeAgent

Index

Constructors

constructor

new GenerativeAgent(llm, longTermMemory, config): GenerativeAgent
Parameters
- llm: BaseLanguageModelInterface
- longTermMemory: GenerativeAgentMemory
- config: GenerativeAgentConfig
Returns GenerativeAgent
Overrides BaseChain.constructor
- Defined in langchain/src/experimental/generative_agents/generative_agent.ts:103

Properties

llm

llm: BaseLanguageModelInterface

longTermMemory

longTermMemory: GenerativeAgentMemory

name

name: string

status

status: string

traits

traits: string

verbose

verbose: boolean

`Optional` age

age?: number

`Optional` memory

memory?: any

Accessors

inputKeys

get inputKeys(): string[]
Returns string[]
Overrides BaseChain.inputKeys
- Defined in langchain/src/experimental/generative_agents/generative_agent.ts:95

outputKeys

get outputKeys(): string[]
Returns string[]
Overrides BaseChain.outputKeys
- Defined in langchain/src/experimental/generative_agents/generative_agent.ts:99

Methods

addMemory

addMemory(memoryContent, now?, metadata?, callbacks?): Promise<ChainValues>
Adds a memory to the agent's long-term memory.
Parameters
- memoryContent: string
  
  The content of the memory to add.
- Optional now: Date
  
  Optional current date.
- Optional metadata: Record<string, unknown>
  
  Optional metadata for the memory.
- Optional callbacks: any
  
  Optional Callbacks instance.
Returns Promise<ChainValues>
The result of adding the memory to the agent's long-term memory.
- Defined in langchain/src/experimental/generative_agents/generative_agent.ts:501

apply

apply(inputs, config?): Promise<ChainValues[]>
Parameters
- inputs: ChainValues[]
- Optional config: any[]
Returns Promise<ChainValues[]>

⚠️ Deprecated ⚠️

Use .batch() instead. Will be removed in 0.2.0.

This feature is deprecated and will be removed in the future.

It is not recommended for use.

Call the chain on all inputs in the list
Inherited from BaseChain.apply
- Defined in langchain/src/chains/base.ts:256

call

call(values, config?, tags?): Promise<ChainValues>
Parameters
- values: any
- Optional config: any
- Optional tags: string[]
  
  Deprecated
Returns Promise<ChainValues>

Deprecated
Use .invoke() instead. Will be removed in 0.2.0.

Run the core logic of this chain and add to output if desired.

Wraps _call and handles memory.
Inherited from BaseChain.call
- Defined in langchain/src/chains/base.ts:241

chain

chain(prompt): LLMChain<string, any>
Creates a new LLMChain with the given prompt and the agent's language model, verbosity, output key, and memory.
Parameters
- prompt: PromptTemplate
  
  The prompt to use for the LLMChain.
Returns LLMChain<string, any>
A new LLMChain instance.
- Defined in langchain/src/experimental/generative_agents/generative_agent.ts:144

computeAgentSummary

computeAgentSummary(runManager?): Promise<string>
Computes the agent's summary by summarizing the agent's core characteristics given the agent's relevant memories.
Parameters
- Optional runManager: any
  
  Optional CallbackManagerForChainRun instance.
Returns Promise<string>
The computed summary as a string.
- Defined in langchain/src/experimental/generative_agents/generative_agent.ts:446

generateDialogueResponse

generateDialogueResponse(observation, now?): Promise<[boolean, string]>
Generates a dialogue response to the given observation.
Parameters
- observation: string
  
  The observation to generate a dialogue response for.
- Optional now: Date
  
  Optional current date.
Returns Promise<[boolean, string]>
A boolean indicating whether to continue the dialogue and the output string.
- Defined in langchain/src/experimental/generative_agents/generative_agent.ts:381

generateReaction

generateReaction(observation, now?): Promise<[boolean, string]>
Generates a reaction to the given observation.
Parameters
- observation: string
  
  The observation to generate a reaction for.
- Optional now: Date
  
  Optional current date.
Returns Promise<[boolean, string]>
A boolean indicating whether to continue the dialogue and the output string.
- Defined in langchain/src/experimental/generative_agents/generative_agent.ts:356

getEntityAction

getEntityAction(observation, entityName, runManager?): Promise<string>
Extracts the action of the given entity from the given observation.
Parameters
- observation: string
  
  The observation to extract the action from.
- entityName: string
  
  The name of the entity to extract the action for.
- Optional runManager: any
  
  Optional CallbackManagerForChainRun instance.
Returns Promise<string>
The extracted action as a string.
- Defined in langchain/src/experimental/generative_agents/generative_agent.ts:187

getEntityFromObservations

getEntityFromObservations(observation, runManager?): Promise<string>
Extracts the observed entity from the given observation.
Parameters
- observation: string
  
  The observation to extract the entity from.
- Optional runManager: any
  
  Optional CallbackManagerForChainRun instance.
Returns Promise<string>
The extracted entity as a string.
- Defined in langchain/src/experimental/generative_agents/generative_agent.ts:161

getFullHeader

getFullHeader(config?): string
Returns a full header of the agent's status, summary, and current time.
Parameters
- config: {
  forceRefresh?: boolean;
  now?: Date;
  } = {}
  
  Optional configuration object with current date and a boolean to force refresh.
  - Optional forceRefresh?: boolean
  - Optional now?: Date
Returns string
The full header as a string.
- Defined in langchain/src/experimental/generative_agents/generative_agent.ts:473

getSummary

getSummary(config?, runManager?): Promise<string>
Gets the agent's summary, which includes the agent's name, age, traits, and a summary of the agent's core characteristics. The summary is updated periodically through probing the agent's memories.
Parameters
- Optional config: {
  forceRefresh?: boolean;
  now?: Date;
  }
  
  Optional configuration object with current date and a boolean to force refresh.
  - Optional forceRefresh?: boolean
  - Optional now?: Date
- Optional runManager: any
  
  Optional CallbackManagerForChainRun instance.
Returns Promise<string>
The agent's summary as a string.
- Defined in langchain/src/experimental/generative_agents/generative_agent.ts:406

invoke

invoke(input, config?): Promise<ChainValues>
Invoke the chain with the provided input and returns the output.
Parameters
- input: ChainValues
  
  Input values for the chain run.
- Optional config: any
  
  Optional configuration for the Runnable.
Returns Promise<ChainValues>
Promise that resolves with the output of the chain run.
Inherited from BaseChain.invoke
- Defined in langchain/src/chains/base.ts:86

parseList

parseList(text): string[]
Parses a newline-separated string into a list of strings.
Parameters
- text: string
  
  The string to parse.
Returns string[]
An array of strings parsed from the input text.
- Defined in langchain/src/experimental/generative_agents/generative_agent.ts:129

prepOutputs

prepOutputs(inputs, outputs, returnOnlyOutputs?): Promise<Record<string, unknown>>
Parameters
- inputs: Record<string, unknown>
- outputs: Record<string, unknown>
- returnOnlyOutputs: boolean = false
Returns Promise<Record<string, unknown>>
Inherited from BaseChain.prepOutputs
- Defined in langchain/src/chains/base.ts:148

run

run(input, config?): Promise<string>
Parameters
- input: any
- Optional config: any
Returns Promise<string>

Deprecated
Use .invoke() instead. Will be removed in 0.2.0.
Inherited from BaseChain.run
- Defined in langchain/src/chains/base.ts:188

serialize

serialize(): SerializedBaseChain
Return a json-like object representing this chain.

Returns SerializedBaseChain
Inherited from BaseChain.serialize
- Defined in langchain/src/chains/base.ts:179

summarizeRelatedMemories

summarizeRelatedMemories(observation, runManager?): Promise<string>
Summarizes memories that are most relevant to an observation.
Parameters
- observation: string
  
  The observation to summarize related memories for.
- Optional runManager: any
  
  Optional CallbackManagerForChainRun instance.
Returns Promise<string>
The summarized memories as a string.
- Defined in langchain/src/experimental/generative_agents/generative_agent.ts:214

`Static` deserialize

deserialize(data, values?): Promise<BaseChain<ChainValues, ChainValues>>
Load a chain from a json-like object describing it.
Parameters
- data: SerializedBaseChain
- values: LoadValues = {}
Returns Promise<BaseChain<ChainValues, ChainValues>>
Inherited from BaseChain.deserialize
- Defined in langchain/src/chains/base.ts:268

Class GenerativeAgent

Example

Hierarchy

Index

Constructors

Properties

Accessors

Methods

Constructors

constructor

Parameters

llm: BaseLanguageModelInterface

longTermMemory: GenerativeAgentMemory

config: GenerativeAgentConfig

Returns GenerativeAgent

Properties

llm

longTermMemory

name

status

traits

verbose

Optional age

Optional memory

Accessors

inputKeys

Returns string[]

outputKeys

Returns string[]

Methods

addMemory

Parameters

memoryContent: string

Optional now: Date

Optional metadata: Record<string, unknown>

Optional callbacks: any

Returns Promise<ChainValues>

apply

Parameters

inputs: ChainValues[]

Optional config: any[]

Returns Promise<ChainValues[]>

⚠️ Deprecated ⚠️

call

Parameters

values: any

Optional config: any

Optional tags: string[]

Deprecated

Returns Promise<ChainValues>

Deprecated

chain

Parameters

prompt: PromptTemplate

Returns LLMChain<string, any>

computeAgentSummary

Parameters

Optional runManager: any

Returns Promise<string>

generateDialogueResponse

Parameters

observation: string

Optional now: Date

Returns Promise<[boolean, string]>

generateReaction

Parameters

observation: string

Optional now: Date

Returns Promise<[boolean, string]>

getEntityAction

Parameters

observation: string

entityName: string

Optional runManager: any

Returns Promise<string>

getEntityFromObservations

Parameters

observation: string

Optional runManager: any

Returns Promise<string>

`Optional` age

`Optional` memory

`Optional` now: Date

`Optional` metadata: Record<string, unknown>

`Optional` callbacks: any

`Optional` config: any[]

`Optional` config: any

`Optional` tags: string[]

`Optional` runManager: any

`Optional` now: Date

`Optional` now: Date

`Optional` runManager: any

`Optional` runManager: any

config: {
forceRefresh?: boolean;
now?: Date;
} = {}

`Optional` forceRefresh?: boolean

`Optional` now?: Date

`Optional` config: {
forceRefresh?: boolean;
now?: Date;
}

`Optional` forceRefresh?: boolean

`Optional` now?: Date

`Optional` runManager: any

`Optional` config: any

`Optional` config: any

`Optional` runManager: any

`Static` deserialize