Module messages 

Anthropic Messages API protocol definitions

This module provides Rust types for the Anthropic Messages API. See: https://docs.anthropic.com/en/api/messages

Structs

BashCodeExecutionOutputBlock

Bash code execution output file reference

BashCodeExecutionResultBlock

Bash code execution result block (beta)

BashCodeExecutionToolResultBlock

Bash code execution tool result block (beta)

BashCodeExecutionToolResultError

Bash code execution tool result error

BashTool

Bash tool for computer use

CacheCreation

Cache creation breakdown

CharLocationCitation

Character location citation

CitationsConfig

Citations configuration

CodeExecutionOutputBlock

Code execution output file reference

CodeExecutionResultBlock

Code execution result block (beta)

CodeExecutionTool

Code execution tool (beta)

CodeExecutionToolResultBlock

Code execution tool result block (beta)

CodeExecutionToolResultError

Code execution tool result error

ComputerUseTool

Computer use tool (beta)

ContainerConfig

Container configuration for code execution (beta)

ContainerUploadBlock

Container upload block (beta)

ContentBlockLocationCitation

Content block location citation

CountMessageTokensRequest

Request to count tokens in a message

CountMessageTokensResponse

Response from token counting

CreateMessageRequest

Request to create a message using the Anthropic Messages API.

CustomTool

Custom tool definition

DocumentBlock

Document content block

ErrorResponse

Error response

ImageBlock

Image content block

InputMessage

A single input message in a conversation

InputSchema

JSON Schema for tool input

ListModelsResponse

List of models response

McpServerConfig

MCP server configuration (beta)

McpToolConfig

Per-tool MCP configuration

McpToolConfiguration

MCP tool configuration

McpToolDefaultConfig

Default configuration for MCP tools

McpToolResultBlock

MCP tool result block (beta) - for user messages

McpToolUseBlock

MCP tool use block (beta) - for assistant messages

McpToolset

MCP toolset definition (beta)

MemoryTool

Memory tool (beta)

Message

Response message from the API

MessageDelta

Message delta for streaming updates

MessageDeltaUsage

Usage delta for streaming updates

Metadata

Request metadata

ModelInfo

Model information

PageLocationCitation

Page location citation

RedactedThinkingBlock

Redacted thinking block

SearchResultBlock

Search result block

SearchResultLocationCitation

Search result location citation

ServerToolUsage

Server tool usage information

ServerToolUseBlock

Server tool use block

TextBlock

Text content block

TextEditorCodeExecutionCreateResultBlock

Text editor create result block

TextEditorCodeExecutionStrReplaceResultBlock

Text editor str_replace result block

TextEditorCodeExecutionToolResultBlock

Text editor code execution tool result block (beta)

TextEditorCodeExecutionToolResultError

Text editor code execution tool result error

TextEditorCodeExecutionViewResultBlock

Text editor view result block

TextEditorTool

Text editor tool for computer use

ThinkingBlock

Thinking block

ToolReferenceBlock

Tool reference block (beta) - returned by tool search

ToolResultBlock

Tool result block (in user messages)

ToolSearchResultBlock

Tool search result block (beta)

ToolSearchTool

Tool search tool (beta)

ToolSearchToolResultBlock

Tool search tool result block (beta)

ToolUseBlock

Tool use block (in assistant messages)

Usage

Billing and rate-limit usage

UserLocation

User location for web search

WebFetchResultBlock

Web fetch result block (beta)

WebFetchTool

Web fetch tool (beta)

WebFetchToolResultBlock

Web fetch tool result block (beta)

WebFetchToolResultError

Web fetch tool result error

WebSearchResultBlock

Web search result block

WebSearchResultLocationCitation

Web search result location citation

WebSearchTool

Web search tool

WebSearchToolResultBlock

Web search tool result block

WebSearchToolResultError

Web search tool result error

Enums

ApiError

API error types

BashCodeExecutionToolResultContent

Bash code execution tool result content

BashCodeExecutionToolResultErrorCode

Bash code execution error codes

BetaContentBlock

Beta output content block types (extends ContentBlock)

BetaInputContentBlock

Beta input content block types (extends InputContentBlock)

BetaServerToolName

Server tool names for beta features

BetaTool

Beta tool definition (extends Tool)

CacheControl

Cache control configuration

Citation

Citation types

CodeExecutionToolResultContent

Code execution tool result content

CodeExecutionToolResultErrorCode

Code execution error codes

ContentBlock

Output content block types

ContentBlockDelta

Content block delta for streaming updates

DocumentSource

Document source (base64, text, or URL)

ImageSource

Image source (base64 or URL)

InputContent

Input content can be a string or an array of content blocks

InputContentBlock

Input content block types

MessageStreamEvent

Server-sent event wrapper

Role

Role of a message sender

ServerToolCaller

Server tool caller types (beta)

ServiceTier

Service tier options

StopReason

Stop reasons

SystemContent

System content can be a string or an array of text blocks

TextEditorCodeExecutionToolResultContent

Text editor code execution result content

TextEditorCodeExecutionToolResultErrorCode

Text editor code execution error codes

ThinkingConfig

Configuration for extended thinking

Tool

Tool definition

ToolChoice

How the model should use the provided tools

ToolResultContent

Tool result content (string or blocks)

ToolResultContentBlock

Content blocks allowed in tool results

WebFetchToolResultContent

Web fetch tool result content

WebFetchToolResultErrorCode

Web fetch error codes

WebSearchToolResultContent

Web search tool result content

WebSearchToolResultErrorCode

Web search tool result error codes