v1

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

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[]

Successful response

input_tokensinteger

Number of input tokens