Crate agent_fn_registry 

agent-fn-registry: one registry per LLM agent tool set.

Keeps the callable, schema, side-effect tags, and default args in one place instead of scattered parallel structures.

use agent_fn_registry::{Registry, ToolNotFoundError};
use serde_json::{json, Value};

let mut reg = Registry::new();

reg.register(
    "echo",
    |args: Value| args.get("msg").cloned().unwrap_or(Value::Null),
    json!({"name": "echo", "description": "Echo a message.",
           "input_schema": {"type": "object",
                            "properties": {"msg": {"type": "string"}},
                            "required": ["msg"]}}),
    &["read"],
    Some(json!({"msg": "hello"})),
);

let result = reg.dispatch("echo", Some(json!({"msg": "world"}))).unwrap();
assert_eq!(result, json!("world"));

let tools = reg.anthropic_tools();
assert_eq!(tools[0]["name"], json!("echo"));

Structs

Registry

In-process registry of LLM agent tools.

ToolEntry

One registered tool.

ToolNotFoundError