agentic-vision-mcp 0.2.5

MCP server for AgenticVision — universal LLM access to persistent visual memory
Documentation 
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//! MCP response types for tools, resources, and prompts.

use serde::{Deserialize, Serialize};
use serde_json::Value;

#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(tag = "type")]
pub enum ToolContent {
    #[serde(rename = "text")]
    Text { text: String },
    #[serde(rename = "image")]
    Image {
        data: String,
        #[serde(rename = "mimeType")]
        mime_type: String,
    },
    #[serde(rename = "resource")]
    Resource { resource: ResourceContent },
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ToolCallResult {
    pub content: Vec<ToolContent>,
    #[serde(default, rename = "isError", skip_serializing_if = "Option::is_none")]
    pub is_error: Option<bool>,
}

impl ToolCallResult {
    pub fn text(text: String) -> Self {
        Self {
            content: vec![ToolContent::Text { text }],
            is_error: None,
        }
    }

    pub fn json(value: &impl Serialize) -> Self {
        let text = serde_json::to_string_pretty(value).unwrap_or_else(|e| e.to_string());
        Self::text(text)
    }

    pub fn error(message: String) -> Self {
        Self {
            content: vec![ToolContent::Text { text: message }],
            is_error: Some(true),
        }
    }
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ToolDefinition {
    pub name: String,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub description: Option<String>,
    #[serde(rename = "inputSchema")]
    pub input_schema: Value,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ToolListResult {
    pub tools: Vec<ToolDefinition>,
    #[serde(
        default,
        rename = "nextCursor",
        skip_serializing_if = "Option::is_none"
    )]
    pub next_cursor: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ResourceContent {
    pub uri: String,
    #[serde(default, rename = "mimeType", skip_serializing_if = "Option::is_none")]
    pub mime_type: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub text: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub blob: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ResourceDefinition {
    pub uri: String,
    pub name: String,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub description: Option<String>,
    #[serde(default, rename = "mimeType", skip_serializing_if = "Option::is_none")]
    pub mime_type: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ResourceTemplateDefinition {
    #[serde(rename = "uriTemplate")]
    pub uri_template: String,
    pub name: String,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub description: Option<String>,
    #[serde(default, rename = "mimeType", skip_serializing_if = "Option::is_none")]
    pub mime_type: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ResourceListResult {
    pub resources: Vec<ResourceDefinition>,
    #[serde(
        default,
        rename = "nextCursor",
        skip_serializing_if = "Option::is_none"
    )]
    pub next_cursor: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ResourceTemplateListResult {
    #[serde(rename = "resourceTemplates")]
    pub resource_templates: Vec<ResourceTemplateDefinition>,
    #[serde(
        default,
        rename = "nextCursor",
        skip_serializing_if = "Option::is_none"
    )]
    pub next_cursor: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ReadResourceResult {
    pub contents: Vec<ResourceContent>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PromptArgument {
    pub name: String,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub description: Option<String>,
    #[serde(default)]
    pub required: bool,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PromptDefinition {
    pub name: String,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub description: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub arguments: Option<Vec<PromptArgument>>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PromptListResult {
    pub prompts: Vec<PromptDefinition>,
    #[serde(
        default,
        rename = "nextCursor",
        skip_serializing_if = "Option::is_none"
    )]
    pub next_cursor: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PromptMessage {
    pub role: String,
    pub content: ToolContent,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PromptGetResult {
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub description: Option<String>,
    pub messages: Vec<PromptMessage>,
}