> ## Documentation Index > Fetch the complete documentation index at: https://docs.acedata.cloud/llms.txt > Use this file to discover all available pages before exploring further. # Claude Messages Count Tokens ## OpenAPI ````yaml /openapi/claude.json post /v1/messages/count_tokens openapi: 3.0.0 info: title: Claude AI version: 1.0.0 description: API reference for Claude AI on Ace Data Cloud. servers: - url: https://api.acedata.cloud description: Ace Data Cloud API security: - bearerAuth: [] paths: /v1/messages/count_tokens: post: summary: Claude Messages Count Tokens requestBody: required: true content: application/json: schema: type: object required: - model - messages properties: model: type: string description: V1 Messages Count Tokens Model enum: - claude-fable-5 - claude-opus-4-8 - claude-sonnet-5 - claude-sonnet-4-6 - claude-opus-4-7 - claude-opus-4-6 - claude-opus-4-5-20251101 - claude-haiku-4-5-20251001 - claude-sonnet-4-5-20250929 - claude-opus-4-1-20250805 - claude-sonnet-4-20250514 - claude-opus-4-20250514 - claude-3-7-sonnet-20250219 - claude-3-5-sonnet-20241022 - claude-3-5-haiku-20241022 - claude-3-5-sonnet-20240620 - claude-3-haiku-20240307 - claude-3-sonnet-20240229 - claude-3-opus-20240229 example: claude-opus-4-8 messages: type: array description: V1 Messages Count Tokens Messages items: type: object required: - role - content properties: role: type: string enum: - user - assistant content: oneOf: - type: string - type: array items: type: object properties: type: type: string enum: - text - image - document - tool_use - tool_result text: type: string source: type: object properties: type: type: string enum: - base64 - url - text - content media_type: type: string data: type: string url: type: string id: type: string name: type: string input: type: object tool_use_id: type: string content: oneOf: - type: string - type: array items: type: object system: type: string description: V1 Messages Count Tokens System thinking: type: object description: V1 Messages Count Tokens Thinking properties: type: type: string enum: - enabled - disabled - adaptive budget_tokens: type: integer description: V1 Messages Count Tokens Thinking Budget Tokens tool_choice: type: object description: V1 Messages Count Tokens Tool Choice tools: type: array items: type: object description: V1 Messages Count Tokens Tools example: model: claude-opus-4-8 messages: - role: user content: Hello! responses: '200': description: V1 Messages Count Tokens Response 200 content: application/json: schema: type: object required: - input_tokens properties: input_tokens: type: integer description: V1 Messages Count Tokens Response 200 Input Tokens '400': content: application/json: schema: oneOf: - type: object example: error: code: token_mismatched message: The specified token is not matched with API. trace_id: 2efa9340-b21b-4e26-9e14-4aac95f343ab properties: error: type: object properties: code: type: string example: token_mismatched description: V1 Messages Count Tokens Response 400 Error Code message: type: string example: The specified token is not matched with API. description: >- V1 Messages Count Tokens Response 400 Error Message trace_id: type: string description: V1 Messages Count Tokens Response 400 Trace Id - type: object example: error: code: api_not_implemented message: The API is not implemented. trace_id: 2efa9340-b21b-4e26-9e14-4aac95f343ab properties: error: type: object properties: code: type: string example: api_not_implemented description: V1 Messages Count Tokens Response 400 Error Code 2 message: type: string example: The API is not implemented. description: >- V1 Messages Count Tokens Response 400 Error Message 2 trace_id: type: string description: V1 Messages Count Tokens Response 400 Trace Id 2 - type: object example: error: code: disabled message: >- Your application has been disabled by Ace Data Cloud due to abnormal usage behavior, please contact our support to get more information. trace_id: 2efa9340-b21b-4e26-9e14-4aac95f343ab properties: error: type: object properties: code: type: string example: disabled description: V1 Messages Count Tokens Response 400 Error Code 3 message: type: string example: >- Your application has been disabled by Ace Data Cloud due to abnormal usage behavior, please contact our support to get more information. description: >- V1 Messages Count Tokens Response 400 Error Message 3 trace_id: type: string description: V1 Messages Count Tokens Response 400 Trace Id 3 - type: object example: error: code: bad_request message: model is invalid. trace_id: 2efa9340-b21b-4e26-9e14-4aac95f343ab properties: error: type: object properties: code: type: string example: bad_request description: V1 Messages Count Tokens Response 400 Error Code 4 message: type: string example: model is invalid. description: >- V1 Messages Count Tokens Response 400 Error Message 4 trace_id: type: string description: V1 Messages Count Tokens Response 400 Trace Id 4 - type: object example: error: code: no_token message: No token specified for the request. trace_id: 2efa9340-b21b-4e26-9e14-4aac95f343ab properties: error: type: object properties: code: type: string example: no_token description: V1 Messages Count Tokens Response 400 Error Code 5 message: type: string example: No token specified for the request. description: >- V1 Messages Count Tokens Response 400 Error Message 5 trace_id: type: string description: V1 Messages Count Tokens Response 400 Trace Id 5 description: V1 Messages Count Tokens Response 400 '401': content: application/json: schema: oneOf: - type: object example: error: code: invalid_token message: The specified token is invalid or wrong. trace_id: 2efa9340-b21b-4e26-9e14-4aac95f343ab properties: error: type: object properties: code: type: string example: invalid_token description: V1 Messages Count Tokens Response 401 Error Code message: type: string example: The specified token is invalid or wrong. description: >- V1 Messages Count Tokens Response 401 Error Message trace_id: type: string description: V1 Messages Count Tokens Response 401 Trace Id - type: object example: error: code: token_expired message: token expired. trace_id: 2efa9340-b21b-4e26-9e14-4aac95f343ab properties: error: type: object properties: code: type: string example: token_expired description: V1 Messages Count Tokens Response 401 Error Code 2 message: type: string example: token expired. description: >- V1 Messages Count Tokens Response 401 Error Message 2 trace_id: type: string description: V1 Messages Count Tokens Response 401 Trace Id 2 - type: object example: error: code: token_mismatched message: token and api does not match. trace_id: 2efa9340-b21b-4e26-9e14-4aac95f343ab properties: error: type: object properties: code: type: string example: token_mismatched description: V1 Messages Count Tokens Response 401 Error Code 3 message: type: string example: token and api does not match. description: >- V1 Messages Count Tokens Response 401 Error Message 3 trace_id: type: string description: V1 Messages Count Tokens Response 401 Trace Id 3 description: V1 Messages Count Tokens Response 401 '403': content: application/json: schema: oneOf: - type: object example: error: code: used_up message: >- Your balance is not sufficient for current request, please buy more in Ace Data Cloud. trace_id: 2efa9340-b21b-4e26-9e14-4aac95f343ab properties: error: type: object properties: code: type: string example: used_up description: V1 Messages Count Tokens Response 403 Error Code message: type: string example: >- Your balance is not sufficient for current request, please buy more in Ace Data Cloud. description: >- V1 Messages Count Tokens Response 403 Error Message trace_id: type: string description: V1 Messages Count Tokens Response 403 Trace Id description: V1 Messages Count Tokens Response 403 '404': content: application/json: schema: oneOf: - type: object example: error: code: no_api message: API does not exist, please make sure url is correct. trace_id: 2efa9340-b21b-4e26-9e14-4aac95f343ab properties: error: type: object properties: code: type: string example: no_api description: V1 Messages Count Tokens Response 404 Error Code message: type: string example: >- API does not exist, please make sure url is correct. description: >- V1 Messages Count Tokens Response 404 Error Message trace_id: type: string description: V1 Messages Count Tokens Response 404 Trace Id description: V1 Messages Count Tokens Response 404 '429': content: application/json: schema: oneOf: - type: object example: error: code: too_many_requests message: You have exceeded the rate limit. trace_id: 2efa9340-b21b-4e26-9e14-4aac95f343ab properties: error: type: object properties: code: type: string example: too_many_requests description: V1 Messages Count Tokens Response 429 Error Code message: type: string example: You have exceeded the rate limit. description: >- V1 Messages Count Tokens Response 429 Error Message trace_id: type: string description: V1 Messages Count Tokens Response 429 Trace Id description: V1 Messages Count Tokens Response 429 '500': content: application/json: schema: oneOf: - type: object example: error: code: api_error message: Internal server error. trace_id: 2efa9340-b21b-4e26-9e14-4aac95f343ab properties: error: type: object properties: code: type: string example: api_error description: V1 Messages Count Tokens Response 500 Error Code message: type: string example: Internal server error. description: >- V1 Messages Count Tokens Response 500 Error Message trace_id: type: string description: V1 Messages Count Tokens Response 500 Trace Id description: V1 Messages Count Tokens Response 500 security: - bearerAuth: [] components: securitySchemes: bearerAuth: type: http scheme: bearer description: API token from https://platform.acedata.cloud ````