Count tokens (LangChain - Anthropic format)
Counts tokens using Anthropic-compatible format via LangChain.
AuthorizationBearer <token>
Bearer token authentication. Use your MPilot virtual-key JWT or admin JWT.
Virtual keys (prefixed with sk-bf-) can also be passed here.
In: header
modelstring
Model identifier (e.g., claude-3-opus-20240229)
max_tokensinteger
Maximum tokens to generate
messagesarray<AnthropicMessage>
List of messages in the conversation
system?string | array<AnthropicContentBlock>
System prompt
cache_control?CacheControl
Automatic caching directives for the whole request
metadata?object
stream?boolean
Whether to stream the response
temperature?number
Range
0 <= value <= 1top_p?number
top_k?integer
stop_sequences?array<string>
tools?array<object>
tool_choice?object
mcp_servers?array<object>
MCP servers configuration (requires beta header)
thinking?object
output_format?object
Structured output format (requires beta header)
Empty Object
fallbacks?array<string>
Response Body
curl -X POST "https://loading/{AI_GATEWAY_URL}/langchain/anthropic/v1/messages/count_tokens" \ -H "Content-Type: application/json" \ -d '{ "model": "claude-3-opus-20240229", "max_tokens": 0, "messages": [ { "role": "user", "content": "string" } ] }'{
"input_tokens": 0
}{
"type": "error",
"error": {
"type": "string",
"message": "string"
}
}{
"type": "error",
"error": {
"type": "string",
"message": "string"
}
}