Messages to count tokens for
Optionaltools: null | Record<string, any>[]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.
Approximate token count
Default token counter that approximates based on character count.
If tools are provided, the token count also includes stringified tool schemas.