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POST
Count Anthropic Tokens

Authorizations

Authorization
string
header
required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Body

application/json

Body for /v1/messages/count_tokens — same fields as messages but max_tokens is optional.

model
string
required
messages
AnthropicMessage · object[]
required
system
tools
Tools · object[] | null
tool_choice
Tool Choice · object | null

Response

Successful Response

Response body for POST /v1/messages/count_tokens.

input_tokens
integer
required

Number of input tokens the request would consume.