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latestOpenAPI 3.1.0Apache 2.02026-07-264001921002.3 KB
LangChain Integration

Count tokens (LangChain - Anthropic format)

Counts tokens using Anthropic-compatible format via LangChain.

post/langchain/anthropic/v1/messages/count_tokens

Request body

modelstring required

Model identifier (e.g., claude-3-opus-20240229)

max_tokensinteger required

Maximum tokens to generate

streamboolean

Whether to stream the response

temperaturenumber
top_pnumber
top_kinteger
stop_sequencesstring[]
output_formatobject

Structured output format (requires beta header)

fallbacksstring[]

Example request

{
  "model": "claude-3-opus-20240229"
}

Response

Successful response

input_tokensinteger

Number of input tokens