Function●Since v1.3

countTokensApproximately

countTokensApproximately(
  messages: BaseMessage<MessageStructure<MessageToolSet>, MessageType>[],
  tools: Record

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Parameters

Name	Type	Description
`messages`*	`BaseMessage<MessageStructure<MessageToolSet>, MessageType>[]`
`tools`	`Record<string, any>[] \| null`

Default token counter that approximates based on character count.

If tools are provided, the token count also includes stringified tool schemas.

Optional list of tools to include in the token count. Each tool can be either a LangChain tool instance or a dict representing a tool schema. LangChain tool instances are converted to OpenAI tool format before counting.

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countTokensApproximately

Parameters