edgecrab-tools 0.8.0

Tool registry, ToolHandler trait, and 50+ tool implementations
Documentation

edgecrab-tools

Why this crate? LLM reasoning is only useful when it connects to the real world.
edgecrab-tools is the action layer: a central ToolRegistry, a ToolHandler trait,
and 30+ ready-to-use tool implementations that let EdgeCrab read files, run commands,
browse the web, execute code, talk to MCP servers, and more — all with security checks
baked in at every boundary.

Part of EdgeCrab — the Rust SuperAgent.

Built-in tools (30+)

Toolset Tools
file file_read, file_write, file_patch, file_search
terminal terminal (local/SSH/Docker/Modal backends), process (background)
web web (search + extract + crawl), browser (headless Chrome CDP)
memory memory (MEMORY.md / USER.md read-write)
skills skills (list/view/manage), skills_hub (remote registry), skills_guard (security scan)
session session_search (FTS5 across history)
delegation delegate_task (sub-agent), mixture_of_agents (MoA)
code_execution execute_code (sandboxed runner)
mcp mcp_client (stdio + HTTP Bearer, JSON-RPC 2.0)
vision vision (multimodal image analysis)
tts tts (text-to-speech)
transcribe transcribe (audio → text)
misc todo, cron, clarify, checkpoint, advanced, pdf_to_markdown, homeassistant, honcho

Add to your crate

[dependencies]
edgecrab-tools = { path = "../edgecrab-tools" }

Implement a new tool

use async_trait::async_trait;
use serde::Deserialize;
use serde_json::json;
use edgecrab_types::{ToolError, ToolSchema};
use edgecrab_tools::registry::{ToolContext, ToolHandler};

pub struct EchoTool;

#[derive(Deserialize)]
struct EchoArgs { message: String }

#[async_trait]
impl ToolHandler for EchoTool {
    fn name(&self) -> &'static str { "echo" }
    fn toolset(&self) -> &'static str { "demo" }
    fn emoji(&self) -> &'static str { "📢" }

    fn schema(&self) -> ToolSchema {
        ToolSchema {
            name: "echo".into(),
            description: "Returns the message unchanged.".into(),
            parameters: json!({
                "type": "object",
                "properties": {
                    "message": { "type": "string", "description": "Text to echo" }
                },
                "required": ["message"]
            }),
            strict: None,
        }
    }

    async fn execute(&self, args: serde_json::Value, _ctx: &ToolContext) -> Result<String, ToolError> {
        let a: EchoArgs = serde_json::from_value(args)
            .map_err(|e| ToolError::InvalidArgs { tool: "echo".into(), message: e.to_string() })?;
        Ok(json!({"echo": a.message}).to_string())
    }
}

// Auto-register at startup
inventory::submit!(edgecrab_tools::registry::RegisteredTool { handler: &EchoTool });

Add the module to tools/mod.rs and (optionally) to CORE_TOOLS in toolsets.rs.

Security rules (enforced in every built-in tool)

  • File paths → edgecrab_security::path_safety::validate_path()
  • Web URLs → edgecrab_security::ssrf::is_safe_url()
  • Shell args → edgecrab_security::command_scan::scan_command()
  • Skill installs → skills_guard::scan_skill() (23 threat patterns)

Full docs, guides, and release notes → edgecrab.com