chromewright 0.2.3

Browser automation MCP server and Rust library via Chrome DevTools Protocol (CDP)
Documentation 
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use crate::error::{BrowserError, Result};
use crate::tools::{Tool, ToolContext, ToolResult};
use schemars::JsonSchema;
use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
pub struct ExtractParams {
    /// CSS selector (optional, defaults to body)
    #[serde(skip_serializing_if = "Option::is_none")]
    pub selector: Option<String>,

    /// Format: "text" or "html"
    #[serde(default = "default_format")]
    pub format: String,
}

fn default_format() -> String {
    "text".to_string()
}

#[derive(Default)]
pub struct ExtractContentTool;

#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
pub struct ExtractOutput {
    pub content: String,
    pub format: String,
    pub length: usize,
}

impl Tool for ExtractContentTool {
    type Params = ExtractParams;
    type Output = ExtractOutput;

    fn name(&self) -> &str {
        "extract"
    }

    fn execute_typed(
        &self,
        params: ExtractParams,
        context: &mut ToolContext,
    ) -> Result<ToolResult> {
        let content = if let Some(selector) = &params.selector {
            let tab = context.session.tab()?;
            let element = context.session.find_element(&tab, selector)?;

            if params.format == "html" {
                element
                    .get_content()
                    .map_err(|e| BrowserError::ToolExecutionFailed {
                        tool: "extract".to_string(),
                        reason: e.to_string(),
                    })?
            } else {
                element
                    .get_inner_text()
                    .map_err(|e| BrowserError::ToolExecutionFailed {
                        tool: "extract".to_string(),
                        reason: e.to_string(),
                    })?
            }
        } else {
            // Extract from body
            let js_code = if params.format == "html" {
                "document.body.innerHTML"
            } else {
                "document.body.innerText"
            };

            let result = context
                .session
                .tab()?
                .evaluate(js_code, false)
                .map_err(|e| BrowserError::EvaluationFailed(e.to_string()))?;

            result
                .value
                .and_then(|v| v.as_str().map(String::from))
                .unwrap_or_default()
        };

        Ok(ToolResult::success_with(ExtractOutput {
            length: content.len(),
            format: params.format,
            content,
        }))
    }
}