> ## Documentation Index > Fetch the complete documentation index at: https://sambanova-systems.mintlify.site/docs/llms.txt > Use this file to discover all available pages before exploring further. # Count tokens for a message request > Anthropic `count_tokens` compatible endpoint. Returns the number of input tokens that would be consumed by a `POST /messages` call with the same prompt content (system, messages, tools, tool_choice). Authentication accepts either the bearer `Authorization: Bearer ` header (SambaNova SDK default) or the `x-api-key` header (Anthropic SDK default); the same API key is used in both cases. ## OpenAPI ````yaml https://raw.githubusercontent.com/sambanova/sambanova-inference-api-spec/refs/heads/main/openapi.documented.json post /messages/count_tokens openapi: 3.1.1 info: title: SambaNova cloud API description: SambaNova cloud API Specification version: 1.2.0 termsOfService: https://sambanova.ai/cloud-end-user-license-agreement contact: email: info@sambanova.ai name: SambaNova information license: name: Apache 2.0 url: https://www.apache.org/licenses/LICENSE-2.0.html servers: - url: https://api.sambanova.ai/v1 security: - api_key: [] externalDocs: description: Find out more in the official SambaNova docs url: https://docs.sambanova.ai/docs/en/api-reference/overview paths: /messages/count_tokens: post: tags: - Messages summary: Count tokens for a message request description: >- Anthropic `count_tokens` compatible endpoint. Returns the number of input tokens that would be consumed by a `POST /messages` call with the same prompt content (system, messages, tools, tool_choice). Authentication accepts either the bearer `Authorization: Bearer ` header (SambaNova SDK default) or the `x-api-key` header (Anthropic SDK default); the same API key is used in both cases. operationId: countMessageTokens parameters: - in: header name: anthropic-version required: false description: >- Anthropic API version header sent by the official `anthropic` SDK. Accepted (any value) but currently has no effect on response shape - included for drop-in SDK compatibility. schema: title: Anthropic Version type: string example: '2023-06-01' requestBody: required: true description: Token counting parameters (subset of message creation parameters). content: application/json: schema: $ref: '#/components/schemas/MessageCountTokensRequest' responses: '200': description: Successful response. Returns the input token count. content: application/json: schema: $ref: '#/components/schemas/MessageCountTokensResponse' '400': description: >- Bad Request — `invalid_request_error`. Returned for missing or invalid parameters, unsupported feature flags, unsupported tool types, image source `type:"url"`, `document` content blocks, or non-object request bodies. content: application/json: schema: $ref: '#/components/schemas/MessageErrorResponse' '401': description: Unauthorized — `authentication_error`. Invalid or missing API key. content: application/json: schema: $ref: '#/components/schemas/MessageErrorResponse' '403': description: >- Forbidden — `permission_error`. API key lacks access to the requested resource. content: application/json: schema: $ref: '#/components/schemas/MessageErrorResponse' '404': description: >- Not Found — `not_found_error`. Model does not exist or is not accessible. content: application/json: schema: $ref: '#/components/schemas/MessageErrorResponse' '413': description: >- Payload Too Large — `request_too_large`. Request exceeds the maximum allowed size. content: application/json: schema: $ref: '#/components/schemas/MessageErrorResponse' '429': description: Too Many Requests — `rate_limit_error`. Rate limit exceeded. content: application/json: schema: $ref: '#/components/schemas/MessageErrorResponse' '500': description: >- Internal Server Error — `api_error`. Unexpected issue on the server side. content: application/json: schema: $ref: '#/components/schemas/MessageErrorResponse' '503': description: >- Service Unavailable — `overloaded_error`. Backend is temporarily over capacity. content: application/json: schema: $ref: '#/components/schemas/MessageErrorResponse' security: - api_key: [] - x_api_key: [] x-codeSamples: - lang: JavaScript source: >- import SambaNova from 'sambanova'; const client = new SambaNova({ apiKey: process.env['SAMBANOVA_API_KEY'], // This is the default and can be omitted }); const messageCountTokensResponse = await client.messages.countTokens({ messages: [{ content: 'Hello, Claude!', role: 'user' }], model: 'DeepSeek-V3.1', }); console.log(messageCountTokensResponse.input_tokens); - lang: Python source: |- import os from sambanova import SambaNova client = SambaNova( api_key=os.environ.get("SAMBANOVA_API_KEY"), # This is the default and can be omitted ) message_count_tokens_response = client.messages.count_tokens( messages=[{ "content": "Hello, Claude!", "role": "user", }], model="DeepSeek-V3.1", ) print(message_count_tokens_response.input_tokens) components: schemas: MessageCountTokensRequest: title: Message Count Tokens Request type: object description: >- Request body for `POST /messages/count_tokens`. Returns the input token count for a prompt without generating output. Same prompt shape as `MessageCreateRequest` minus generation-time parameters (`max_tokens`, `stream`, sampling, `stop_sequences`, `metadata`, `service_tier`, etc.). additionalProperties: true properties: model: title: Model type: string description: Model identifier. example: gpt-oss-120b messages: title: Messages type: array minItems: 1 items: $ref: '#/components/schemas/MessageInputMessage' description: Conversation turns. system: $ref: '#/components/schemas/MessageSystemPrompt' thinking: $ref: '#/components/schemas/MessageThinkingConfig' tools: title: Tools type: array items: $ref: '#/components/schemas/MessageTool' nullable: true description: Tool definitions the model may call. tool_choice: allOf: - $ref: '#/components/schemas/MessageToolChoice' nullable: true description: Controls how the model selects from `tools`. required: - model - messages example: model: DeepSeek-V3.1 messages: - role: user content: Hello, Claude! MessageCountTokensResponse: title: Message Count Tokens Response type: object description: Token count for the supplied prompt. properties: input_tokens: type: integer description: Total tokens in the prompt (system + messages + tools). required: - input_tokens MessageErrorResponse: title: Message Error Response type: object description: >- Top-level error envelope returned by the Messages API on any non-2xx response. Shape matches Anthropic's wire format. This envelope is used ONLY on `/messages` and `/messages/count_tokens` properties: type: title: Type type: string description: Always `error` for error envelopes. enum: - error const: error error: $ref: '#/components/schemas/MessageError' request_id: title: Request Id type: string description: >- Opaque request identifier echoed by the server, useful for correlating client-side failures with server-side logs. nullable: true required: - type - error MessageInputMessage: title: Message Input Message type: object description: A turn in the conversation. properties: role: type: string enum: - user - assistant description: >- Conversational role. `user` for the human-side turn, `assistant` for prior model output. content: anyOf: - type: string - title: Content Block Array type: array items: $ref: '#/components/schemas/MessageInputContentBlock' required: - role - content MessageSystemPrompt: title: Message System Prompt description: >- System prompt for the conversation. Accepts either a single string (most common) or an array of text blocks (used when individual segments need `cache_control` markers). Multiple text blocks are joined with newlines and prepended to the conversation as a `role: system` message. anyOf: - type: string - title: System Text Block Array type: array items: $ref: '#/components/schemas/MessageSystemTextBlock' MessageThinkingConfig: title: Message Thinking Config description: >- Controls Anthropic-style extended thinking. **In v1**: only `type:"disabled"` is silently accepted as a no-op; `type:"enabled"` and `type:"adaptive"` return a 400 `invalid_request_error` (`unsupported_parameter`). oneOf: - $ref: '#/components/schemas/MessageThinkingDisabled' - $ref: '#/components/schemas/MessageThinkingEnabled' - $ref: '#/components/schemas/MessageThinkingAdaptive' discriminator: propertyName: type mapping: disabled: $ref: '#/components/schemas/MessageThinkingDisabled' enabled: $ref: '#/components/schemas/MessageThinkingEnabled' adaptive: $ref: '#/components/schemas/MessageThinkingAdaptive' MessageTool: title: Message Tool type: object description: >- User-defined function tool definition. Only custom function tools are supported (Anthropic's `type:"custom"` style or the absent-type Beta style). Anthropic-hosted server tools (`web_search`, `code_execution`, `bash`, `text_editor`, `memory`, `tool_search` variants) return 400 `unsupported_tool_type` if sent. properties: name: type: string description: Tool name. Must match `^[a-zA-Z0-9_-]+$`. type: type: string enum: - custom nullable: true description: >- Tool-type discriminator. May be omitted (defaults to custom) or set to `custom`. Other values return 400 `unsupported_tool_type`. description: type: string nullable: true description: Human-readable description of when the tool should be used. input_schema: type: object additionalProperties: true nullable: true description: >- JSON Schema describing the tool's expected input. Required by the Anthropic spec; accepted as optional by SambaNova. cache_control: allOf: - $ref: '#/components/schemas/MessageCacheControl' nullable: true description: >- Silently dropped on tool definitions (only content and system cache markers participate in caching). input_examples: type: array items: type: object additionalProperties: true nullable: true description: Silently dropped. allowed_callers: type: array items: type: string nullable: true description: Silently dropped. defer_loading: type: boolean nullable: true description: Silently dropped. eager_input_streaming: type: boolean nullable: true description: Silently dropped. strict: type: boolean nullable: true description: Silently dropped. required: - name MessageToolChoice: title: Message Tool Choice description: How the model should choose from the provided tools. oneOf: - $ref: '#/components/schemas/MessageToolChoiceAuto' - $ref: '#/components/schemas/MessageToolChoiceAny' - $ref: '#/components/schemas/MessageToolChoiceNone' - $ref: '#/components/schemas/MessageToolChoiceTool' discriminator: propertyName: type mapping: auto: $ref: '#/components/schemas/MessageToolChoiceAuto' any: $ref: '#/components/schemas/MessageToolChoiceAny' none: $ref: '#/components/schemas/MessageToolChoiceNone' tool: $ref: '#/components/schemas/MessageToolChoiceTool' MessageError: title: Message Error type: object description: >- Inner error object carried inside a `MessageErrorResponse`. The `type` value follows Anthropic's published error taxonomy. properties: type: title: Type type: string description: Error category. Values follow Anthropic's taxonomy. enum: - invalid_request_error - authentication_error - permission_error - not_found_error - request_too_large - rate_limit_error - api_error - overloaded_error - not_implemented_error message: title: Message type: string description: Human-readable explanation of the error. required: - type - message MessageInputContentBlock: title: Message Input Content Block description: Typed content block inside a message's `content` array. oneOf: - $ref: '#/components/schemas/MessageInputTextBlock' - $ref: '#/components/schemas/MessageInputImageBlock' - $ref: '#/components/schemas/MessageInputVideoBlock' - $ref: '#/components/schemas/MessageInputToolUseBlock' - $ref: '#/components/schemas/MessageInputToolResultBlock' - $ref: '#/components/schemas/MessageInputServerToolUseBlock' - $ref: '#/components/schemas/MessageInputSearchResultBlock' - $ref: '#/components/schemas/MessageInputWebSearchToolResultBlock' - $ref: '#/components/schemas/MessageInputWebFetchToolResultBlock' - $ref: '#/components/schemas/MessageInputCodeExecutionToolResultBlock' - $ref: '#/components/schemas/MessageInputBashCodeExecutionToolResultBlock' - $ref: >- #/components/schemas/MessageInputTextEditorCodeExecutionToolResultBlock - $ref: '#/components/schemas/MessageInputToolSearchToolResultBlock' - $ref: '#/components/schemas/MessageInputThinkingBlock' - $ref: '#/components/schemas/MessageInputRedactedThinkingBlock' - $ref: '#/components/schemas/MessageInputContainerUploadBlock' - $ref: '#/components/schemas/MessageInputDocumentBlock' discriminator: propertyName: type mapping: text: $ref: '#/components/schemas/MessageInputTextBlock' image: $ref: '#/components/schemas/MessageInputImageBlock' video: $ref: '#/components/schemas/MessageInputVideoBlock' tool_use: $ref: '#/components/schemas/MessageInputToolUseBlock' tool_result: $ref: '#/components/schemas/MessageInputToolResultBlock' server_tool_use: $ref: '#/components/schemas/MessageInputServerToolUseBlock' search_result: $ref: '#/components/schemas/MessageInputSearchResultBlock' web_search_tool_result: $ref: '#/components/schemas/MessageInputWebSearchToolResultBlock' web_fetch_tool_result: $ref: '#/components/schemas/MessageInputWebFetchToolResultBlock' code_execution_tool_result: $ref: '#/components/schemas/MessageInputCodeExecutionToolResultBlock' bash_code_execution_tool_result: $ref: '#/components/schemas/MessageInputBashCodeExecutionToolResultBlock' text_editor_code_execution_tool_result: $ref: >- #/components/schemas/MessageInputTextEditorCodeExecutionToolResultBlock tool_search_tool_result: $ref: '#/components/schemas/MessageInputToolSearchToolResultBlock' thinking: $ref: '#/components/schemas/MessageInputThinkingBlock' redacted_thinking: $ref: '#/components/schemas/MessageInputRedactedThinkingBlock' container_upload: $ref: '#/components/schemas/MessageInputContainerUploadBlock' document: $ref: '#/components/schemas/MessageInputDocumentBlock' MessageSystemTextBlock: title: Message System Text Block type: object description: >- A text segment within a structured `system` prompt array. Multiple text blocks are concatenated (with newlines) and prepended to the conversation as a `role: system` message at the chat-completions layer. properties: type: const: text enum: - text title: Type type: string text: title: Text type: string description: Plain-text content of the system prompt segment. cache_control: $ref: '#/components/schemas/MessageCacheControl' citations: title: Citations type: array description: 'Optional citations. **In v1**: silently dropped' items: type: object additionalProperties: true nullable: true required: - type - text MessageThinkingDisabled: title: Message Thinking Disabled type: object description: >- Disables Anthropic-style extended thinking. **In v1**: silently accepted as a no-op properties: type: title: Type type: string enum: - disabled const: disabled required: - type MessageThinkingEnabled: title: Message Thinking Enabled type: object description: >- Enables Anthropic-style extended thinking with a fixed budget. **In v1**: returns a 400 `invalid_request_error` (`unsupported_parameter`). properties: type: title: Type type: string enum: - enabled const: enabled budget_tokens: title: Budget Tokens type: integer minimum: 1024 description: >- Maximum tokens the model may spend on extended thinking before producing the final answer. required: - type - budget_tokens MessageThinkingAdaptive: title: Message Thinking Adaptive type: object description: >- Enables Anthropic-style adaptive extended thinking. **In v1**: returns a 400 `invalid_request_error` (`unsupported_parameter`). properties: type: title: Type type: string enum: - adaptive const: adaptive budget_tokens: title: Budget Tokens type: integer minimum: 1024 nullable: true description: >- Optional upper bound on tokens spent on adaptive thinking. When omitted, the backend chooses based on prompt complexity. required: - type MessageCacheControl: title: Message Cache Control type: object description: >- Marks the preceding content block (or system text block) as a prompt- cache breakpoint. Marker positions are collected by the adapter; their wiring into the router's longest-prefix matching **In v1**: position is recorded; the `ttl` value is ignored. properties: type: title: Type type: string enum: - ephemeral const: ephemeral description: Cache breakpoint type. Only `ephemeral` is supported by Anthropic. ttl: title: TTL type: string description: >- Optional time-to-live hint (e.g. `"5m"`, `"1h"`). **Currently ignored** in v1 nullable: true required: - type MessageToolChoiceAuto: title: Message Tool Choice (Auto) type: object description: Let the model decide whether and which tool to use. properties: type: type: string enum: - auto const: auto disable_parallel_tool_use: type: boolean nullable: true description: Silently dropped. required: - type MessageToolChoiceAny: title: Message Tool Choice (Any) type: object description: Require the model to call one of the provided tools. properties: type: type: string enum: - any const: any disable_parallel_tool_use: type: boolean nullable: true description: Silently dropped. required: - type MessageToolChoiceNone: title: Message Tool Choice (None) type: object description: Forbid the model from calling any tool. properties: type: type: string enum: - none const: none required: - type MessageToolChoiceTool: title: Message Tool Choice (Tool) type: object description: Force the model to call a specific tool by name. properties: type: type: string enum: - tool const: tool name: type: string description: Name of the required tool. disable_parallel_tool_use: type: boolean nullable: true description: Silently dropped. required: - type - name MessageInputTextBlock: title: Message Input Text Block type: object description: Plain-text segment of a message. properties: type: type: string enum: - text const: text text: type: string cache_control: $ref: '#/components/schemas/MessageCacheControl' citations: title: Citations type: array items: type: object additionalProperties: true nullable: true required: - type - text MessageInputImageBlock: title: Message Input Image Block type: object description: >- Image content. Only `source.type:"base64"` is supported in v1; URL sources return 400. properties: type: type: string enum: - image const: image source: oneOf: - $ref: '#/components/schemas/MessageInputImageSourceBase64' - $ref: '#/components/schemas/MessageInputImageSourceUrl' discriminator: propertyName: type mapping: base64: $ref: '#/components/schemas/MessageInputImageSourceBase64' url: $ref: '#/components/schemas/MessageInputImageSourceUrl' cache_control: $ref: '#/components/schemas/MessageCacheControl' required: - type - source MessageInputVideoBlock: title: Message Input Video Block type: object description: Video content. properties: type: type: string enum: - video const: video source: oneOf: - $ref: '#/components/schemas/MessageInputVideoSourceBase64' - $ref: '#/components/schemas/MessageInputVideoSourceUrl' discriminator: propertyName: type mapping: base64: $ref: '#/components/schemas/MessageInputVideoSourceBase64' url: $ref: '#/components/schemas/MessageInputVideoSourceUrl' cache_control: $ref: '#/components/schemas/MessageCacheControl' required: - type - source MessageInputToolUseBlock: title: Message Input Tool Use Block type: object description: A prior assistant turn that invoked a tool. properties: type: type: string enum: - tool_use const: tool_use id: type: string description: >- Unique identifier for the tool call (used to correlate `tool_result`). name: type: string description: Name of the tool being invoked. input: type: object additionalProperties: true description: Tool inputs as a JSON object. cache_control: $ref: '#/components/schemas/MessageCacheControl' required: - type - id - name - input MessageInputToolResultBlock: title: Message Input Tool Result Block type: object description: Result of a prior tool call. properties: type: type: string enum: - tool_result const: tool_result tool_use_id: type: string description: ID of the `tool_use` block this result corresponds to. content: anyOf: - type: string - title: Tool Result Content Array type: array items: $ref: '#/components/schemas/MessageInputToolResultContent' is_error: type: boolean nullable: true description: Silently dropped in v1. cache_control: $ref: '#/components/schemas/MessageCacheControl' required: - type - tool_use_id MessageInputServerToolUseBlock: title: Message Input Server Tool Use Block type: object description: >- Anthropic compatibility only — SambaNova does not run server-side tools. A prior assistant turn that invoked an Anthropic-hosted tool (web_search, code_execution, etc.). Accepted in conversation history (e.g. replaying an Anthropic-served session) but never originates from a SambaNova response. New `server_tool_use`-type tool definitions on outgoing requests are rejected with 400 `unsupported_tool_type`. properties: type: type: string enum: - server_tool_use const: server_tool_use id: type: string name: type: string input: type: object additionalProperties: true cache_control: $ref: '#/components/schemas/MessageCacheControl' required: - type - id - name - input MessageInputSearchResultBlock: title: Message Input Search Result Block type: object description: >- Inline search result content. In v1 the `title`, `source`, and `content[]` text are extracted into a text block; citations are dropped. properties: type: type: string enum: - search_result const: search_result title: type: string source: type: string content: type: array items: $ref: '#/components/schemas/MessageInputTextBlock' citations: type: object additionalProperties: true nullable: true cache_control: $ref: '#/components/schemas/MessageCacheControl' required: - type MessageInputWebSearchToolResultBlock: title: Message Input Web Search Tool Result Block type: object description: >- Anthropic compatibility only — SambaNova does not run server-side `web_search`. Echo of a prior Anthropic-served `web_search` tool call; accepted in conversation history but never originates from a SambaNova response. When present, only `title` (`url`) per result is extracted into a tool message. properties: type: type: string enum: - web_search_tool_result const: web_search_tool_result tool_use_id: type: string content: type: array items: type: object additionalProperties: true cache_control: $ref: '#/components/schemas/MessageCacheControl' required: - type - tool_use_id - content MessageInputWebFetchToolResultBlock: title: Message Input Web Fetch Tool Result Block type: object description: >- Anthropic compatibility only — SambaNova does not run server-side `web_fetch`. Echo of a prior Anthropic-served `web_fetch` tool call; accepted in conversation history but never originates from a SambaNova response. When present, only the text content is extracted. properties: type: type: string enum: - web_fetch_tool_result const: web_fetch_tool_result tool_use_id: type: string content: type: object additionalProperties: true cache_control: $ref: '#/components/schemas/MessageCacheControl' required: - type - tool_use_id - content MessageInputCodeExecutionToolResultBlock: title: Message Input Code Execution Tool Result Block type: object description: >- Anthropic compatibility only — SambaNova does not run server-side `code_execution`. Echo of a prior Anthropic-served `code_execution` tool call; accepted in conversation history but never originates from a SambaNova response. When present, only `stdout`, `stderr`, and `return_code` are extracted; image output is dropped. properties: type: type: string enum: - code_execution_tool_result const: code_execution_tool_result tool_use_id: type: string content: type: object additionalProperties: true cache_control: $ref: '#/components/schemas/MessageCacheControl' required: - type - tool_use_id - content MessageInputBashCodeExecutionToolResultBlock: title: Message Input Bash Code Execution Tool Result Block type: object description: >- Anthropic compatibility only — SambaNova does not run server-side bash code execution. Echo of a prior Anthropic-served bash tool call; accepted in conversation history but never originates from a SambaNova response. Same lossy extraction as `code_execution_tool_result`. properties: type: type: string enum: - bash_code_execution_tool_result const: bash_code_execution_tool_result tool_use_id: type: string content: type: object additionalProperties: true cache_control: $ref: '#/components/schemas/MessageCacheControl' required: - type - tool_use_id - content MessageInputTextEditorCodeExecutionToolResultBlock: title: Message Input Text Editor Code Execution Tool Result Block type: object description: >- Anthropic compatibility only — SambaNova does not run server-side text-editor code execution. Echo of a prior Anthropic-served text-editor tool call; accepted in conversation history but never originates from a SambaNova response. When present, only file content is extracted; metadata (line count, file type) is dropped. properties: type: type: string enum: - text_editor_code_execution_tool_result const: text_editor_code_execution_tool_result tool_use_id: type: string content: type: object additionalProperties: true cache_control: $ref: '#/components/schemas/MessageCacheControl' required: - type - tool_use_id - content MessageInputToolSearchToolResultBlock: title: Message Input Tool Search Tool Result Block type: object description: >- Anthropic compatibility only — SambaNova does not run server-side `tool_search`. Echo of a prior Anthropic-served `tool_search` tool call; accepted in conversation history but never originates from a SambaNova response. When present, an empty string is emitted to the tool message (no plain-text fields). properties: type: type: string enum: - tool_search_tool_result const: tool_search_tool_result tool_use_id: type: string content: type: object additionalProperties: true cache_control: $ref: '#/components/schemas/MessageCacheControl' required: - type - tool_use_id - content MessageInputThinkingBlock: title: Message Input Thinking Block type: object description: Extended-reasoning trace from a prior assistant turn. properties: type: type: string enum: - thinking const: thinking thinking: type: string signature: type: string required: - type - thinking - signature MessageInputRedactedThinkingBlock: title: Message Input Redacted Thinking Block type: object description: >- Anthropic compatibility only — SambaNova does not produce encrypted thinking output. Echo of a prior Anthropic-served response where `thinking.display:"omitted"` was set. Accepted in conversation history but never originates from a SambaNova response. Silently dropped on input. properties: type: type: string enum: - redacted_thinking const: redacted_thinking data: type: string required: - type - data MessageInputContainerUploadBlock: title: Message Input Container Upload Block type: object description: >- Anthropic compatibility only — SambaNova does not produce container_upload blocks (these come from Anthropic's server-side `code_execution` tool). Accepted in conversation history but never originates from a SambaNova response. Silently dropped on input. properties: type: type: string enum: - container_upload const: container_upload file_id: type: string cache_control: $ref: '#/components/schemas/MessageCacheControl' required: - type - file_id MessageInputDocumentBlock: title: Message Input Document Block type: object description: >- PDF or document content. **Returns 400** — no document-extraction pipeline available. properties: type: type: string enum: - document const: document source: type: object additionalProperties: true title: type: string nullable: true context: type: string nullable: true citations: type: object additionalProperties: true nullable: true cache_control: $ref: '#/components/schemas/MessageCacheControl' required: - type - source MessageInputImageSourceBase64: title: Message Input Image Source (Base64) type: object description: Inline image data encoded as base64. properties: type: type: string enum: - base64 const: base64 media_type: type: string enum: - image/jpeg - image/png - image/webp description: MIME type of the image bytes. data: type: string description: Base64-encoded image bytes (no `data:` URI prefix). required: - type - media_type - data MessageInputImageSourceUrl: title: Message Input Image Source (URL) type: object description: >- HTTPS URL pointing to an image. **Returns 400 in v1** — URL fetching is blocked. Use `type:"base64"` instead. properties: type: type: string enum: - url const: url url: type: string format: uri required: - type - url MessageInputVideoSourceBase64: title: Message Input Video Source (Base64) type: object description: Inline video data encoded as base64. properties: type: type: string enum: - base64 const: base64 media_type: type: string enum: - video/mp4 description: MIME type of the video bytes. data: type: string description: Base64-encoded video bytes (no `data:` URI prefix). required: - type - media_type - data MessageInputVideoSourceUrl: title: Message Input Video Source (URL) type: object description: HTTPS URL pointing to a video. properties: type: type: string enum: - url const: url url: type: string format: uri required: - type - url MessageInputToolResultContent: title: Message Input Tool Result Content description: Content of a `tool_result` block. only text is forwarded. oneOf: - $ref: '#/components/schemas/MessageInputTextBlock' - $ref: '#/components/schemas/MessageInputImageBlock' discriminator: propertyName: type mapping: text: $ref: '#/components/schemas/MessageInputTextBlock' image: $ref: '#/components/schemas/MessageInputImageBlock' securitySchemes: api_key: type: http description: >- SambaNova API key, sent as a bearer token in the `Authorization` header (`Authorization: Bearer `). Default authentication scheme used by the SambaNova SDK across every OpenAI compatible endpoint. scheme: bearer bearerFormat: apiKey x_api_key: type: apiKey description: >- SambaNova API key, sent in the `x-api-key` header. Accepted on the Messages API routes (`/messages`, `/messages/count_tokens`) so that callers can point the official Anthropic SDK at SambaNova by swapping `base_url` — no code changes. The credential value is the same as the bearer `api_key` scheme; only the transport differs. in: header name: x-api-key ````