diff --git a/Cargo.toml b/Cargo.toml
index 01e7577f..dc79f1e9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -239,6 +239,7 @@ members = [
 ]
 exclude = [
   "plugins/nyash-file",
+  "plugins/nyash-test-multibox",
 ]
 
 [profile.release]
diff --git a/plugins/nyash-console-plugin/src/lib.rs b/plugins/nyash-console-plugin/src/lib.rs
index f4ffc3af..47024eb2 100644
--- a/plugins/nyash-console-plugin/src/lib.rs
+++ b/plugins/nyash-console-plugin/src/lib.rs
@@ -178,16 +178,7 @@ unsafe fn write_tlv_void(out: *mut u8, out_len: *mut usize) -> i32 {
 }
 
 // ===== Entry points =====
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 {
-    1
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init() -> i32 {
-    eprintln!("[ConsoleBox] Plugin initialized");
-    NYB_SUCCESS
-}
+// legacy v1 abi/init removed
 
 /* legacy v1 entry removed
 #[no_mangle]
diff --git a/plugins/nyash-counter-plugin/src/lib.rs b/plugins/nyash-counter-plugin/src/lib.rs
index 1c40c83b..aaa264a0 100644
--- a/plugins/nyash-counter-plugin/src/lib.rs
+++ b/plugins/nyash-counter-plugin/src/lib.rs
@@ -35,15 +35,7 @@ static INSTANCES: Lazy<Mutex<HashMap<u32, CounterInstance>>> =
     Lazy::new(|| Mutex::new(HashMap::new()));
 static INSTANCE_COUNTER: AtomicU32 = AtomicU32::new(1);
 
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 {
-    1
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init() -> i32 {
-    NYB_SUCCESS
-}
+// legacy v1 abi/init removed
 
 /* legacy v1 entry removed
 #[no_mangle]
diff --git a/plugins/nyash-egui-plugin/src/lib.rs b/plugins/nyash-egui-plugin/src/lib.rs
index 3f81d2ae..58dd3d70 100644
--- a/plugins/nyash-egui-plugin/src/lib.rs
+++ b/plugins/nyash-egui-plugin/src/lib.rs
@@ -111,16 +111,7 @@ pub static nyash_typebox_EguiBox: NyashTypeBoxFfi = NyashTypeBoxFfi {
     capabilities: 0,
 };
 
-// ===== Plugin entry points =====
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 {
-    1
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init() -> i32 {
-    OK
-}
+// legacy v1 abi/init removed
 
 /* legacy v1 entry removed
 #[no_mangle]
diff --git a/plugins/nyash-encoding-plugin/src/lib.rs b/plugins/nyash-encoding-plugin/src/lib.rs
index fc3084b6..980b998a 100644
--- a/plugins/nyash-encoding-plugin/src/lib.rs
+++ b/plugins/nyash-encoding-plugin/src/lib.rs
@@ -32,15 +32,7 @@ struct EncInstance; // stateless
 static INST: Lazy<Mutex<HashMap<u32, EncInstance>>> = Lazy::new(|| Mutex::new(HashMap::new()));
 static NEXT_ID: AtomicU32 = AtomicU32::new(1);
 
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 {
-    1
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init() -> i32 {
-    OK
-}
+// legacy v1 abi/init removed
 
 /* legacy v1 entry removed
 #[no_mangle]
diff --git a/plugins/nyash-filebox-plugin/src/lib.rs b/plugins/nyash-filebox-plugin/src/lib.rs
index 20197360..a59164da 100644
--- a/plugins/nyash-filebox-plugin/src/lib.rs
+++ b/plugins/nyash-filebox-plugin/src/lib.rs
@@ -70,19 +70,7 @@ static INSTANCE_COUNTER: AtomicU32 = AtomicU32::new(1);
 
 // ============ Plugin Entry Points ============
 
-/// ABI version
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 {
-    1 // BID-1 support
-}
-
-/// Plugin initialization (optional - global setup)
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init() -> i32 {
-    // グローバル初期化（Lazy staticのため特に必要なし）
-    eprintln!("[FileBox] Plugin initialized");
-    NYB_SUCCESS
-}
+// legacy v1 abi/init removed
 
 /// Method invocation - 仮実装
 /* legacy v1 entry removed
diff --git a/plugins/nyash-integer-plugin/src/lib.rs b/plugins/nyash-integer-plugin/src/lib.rs
index cafde800..e480c7b7 100644
--- a/plugins/nyash-integer-plugin/src/lib.rs
+++ b/plugins/nyash-integer-plugin/src/lib.rs
@@ -35,15 +35,7 @@ struct IntInstance {
 static INST: Lazy<Mutex<HashMap<u32, IntInstance>>> = Lazy::new(|| Mutex::new(HashMap::new()));
 static NEXT_ID: AtomicU32 = AtomicU32::new(1);
 
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 {
-    1
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init() -> i32 {
-    OK
-}
+// legacy v1 abi/init removed
 
 /* legacy v1 entry removed
 #[no_mangle]
diff --git a/plugins/nyash-map-plugin/src/lib.rs b/plugins/nyash-map-plugin/src/lib.rs
index c34f13dd..f38ee256 100644
--- a/plugins/nyash-map-plugin/src/lib.rs
+++ b/plugins/nyash-map-plugin/src/lib.rs
@@ -48,15 +48,7 @@ struct MapInstance {
 static INSTANCES: Lazy<Mutex<HashMap<u32, MapInstance>>> = Lazy::new(|| Mutex::new(HashMap::new()));
 static INSTANCE_COUNTER: AtomicU32 = AtomicU32::new(1);
 
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 {
-    1
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init() -> i32 {
-    NYB_SUCCESS
-}
+// legacy v1 abi/init removed
 
 /* legacy v1 entry removed
 #[no_mangle]
diff --git a/plugins/nyash-math-plugin/src/lib.rs b/plugins/nyash-math-plugin/src/lib.rs
index a533dbdd..50da03af 100644
--- a/plugins/nyash-math-plugin/src/lib.rs
+++ b/plugins/nyash-math-plugin/src/lib.rs
@@ -81,15 +81,7 @@ mod tlv {
     }
 }
 
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 {
-    1
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init() -> i32 {
-    OK
-}
+// legacy v1 abi/init removed
 
 /* legacy v1 entry removed
 #[no_mangle]
diff --git a/plugins/nyash-net-plugin/src/lib.rs b/plugins/nyash-net-plugin/src/lib.rs
index d9b78f20..077b1dfd 100644
--- a/plugins/nyash-net-plugin/src/lib.rs
+++ b/plugins/nyash-net-plugin/src/lib.rs
@@ -162,24 +162,7 @@ struct SockConnState {
 
 struct SockClientState;
 
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 {
-    1
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init() -> i32 {
-    // Force initialize logging
-    let _ = *LOG_ON;
-    let _ = &*LOG_PATH;
-    netlog!(
-        "Net plugin initialized, LOG_ON={}, LOG_PATH={}",
-        *LOG_ON,
-        *LOG_PATH
-    );
-    eprintln!("Net plugin: LOG_ON={}, LOG_PATH={}", *LOG_ON, *LOG_PATH);
-    OK
-}
+// legacy v1 abi/init removed
 
 /* legacy v1 entry removed
 #[no_mangle]
diff --git a/plugins/nyash-path-plugin/src/lib.rs b/plugins/nyash-path-plugin/src/lib.rs
index 078c292a..f0d0b619 100644
--- a/plugins/nyash-path-plugin/src/lib.rs
+++ b/plugins/nyash-path-plugin/src/lib.rs
@@ -34,10 +34,7 @@ static NEXT_ID: AtomicU32 = AtomicU32::new(1);
 
 // legacy v1 entry points removed
 /*
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 { 1 }
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init() -> i32 { OK }
+// legacy v1 abi/init removed
 #[no_mangle]
 pub extern "C" fn nyash_plugin_invoke(
     type_id: u32,
diff --git a/plugins/nyash-python-compiler-plugin/src/lib.rs b/plugins/nyash-python-compiler-plugin/src/lib.rs
index 29667eae..6bf1afd2 100644
--- a/plugins/nyash-python-compiler-plugin/src/lib.rs
+++ b/plugins/nyash-python-compiler-plugin/src/lib.rs
@@ -13,15 +13,7 @@ const METHOD_FINI: u32 = u32::MAX;
 
 static NEXT_ID: Lazy<Mutex<u32>> = Lazy::new(|| Mutex::new(1));
 
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 {
-    1
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init() -> i32 {
-    NYB_SUCCESS
-}
+// legacy v1 abi/init removed
 
 /* legacy v1 entry removed
 #[no_mangle]
diff --git a/plugins/nyash-python-plugin/src/lib.rs b/plugins/nyash-python-plugin/src/lib.rs
index 7858c3e6..2b13058c 100644
--- a/plugins/nyash-python-plugin/src/lib.rs
+++ b/plugins/nyash-python-plugin/src/lib.rs
@@ -343,15 +343,7 @@ fn ensure_cpython() -> Result<(), ()> {
     Ok(())
 }
 
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 {
-    1
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init() -> i32 {
-    NYB_SUCCESS
-}
+// legacy v1 abi/init removed
 
 /* legacy v1 entry removed
 #[no_mangle]
diff --git a/plugins/nyash-regex-plugin/src/lib.rs b/plugins/nyash-regex-plugin/src/lib.rs
index 907e8bc9..62e7c719 100644
--- a/plugins/nyash-regex-plugin/src/lib.rs
+++ b/plugins/nyash-regex-plugin/src/lib.rs
@@ -36,15 +36,7 @@ struct RegexInstance {
 static INST: Lazy<Mutex<HashMap<u32, RegexInstance>>> = Lazy::new(|| Mutex::new(HashMap::new()));
 static NEXT_ID: AtomicU32 = AtomicU32::new(1);
 
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 {
-    1
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init() -> i32 {
-    OK
-}
+// legacy v1 abi/init removed
 
 /* legacy v1 entry removed
 #[no_mangle]
diff --git a/plugins/nyash-string-plugin/src/lib.rs b/plugins/nyash-string-plugin/src/lib.rs
index 166d2c44..3311959c 100644
--- a/plugins/nyash-string-plugin/src/lib.rs
+++ b/plugins/nyash-string-plugin/src/lib.rs
@@ -36,15 +36,7 @@ struct StrInstance {
 static INST: Lazy<Mutex<HashMap<u32, StrInstance>>> = Lazy::new(|| Mutex::new(HashMap::new()));
 static NEXT_ID: AtomicU32 = AtomicU32::new(1);
 
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 {
-    1
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init() -> i32 {
-    OK
-}
+// legacy v1 abi/init removed
 
 /* legacy v1 entry removed
 #[no_mangle]
diff --git a/plugins/nyash-test-multibox/Cargo.toml b/plugins/nyash-test-multibox/Cargo.toml
deleted file mode 100644
index 36f0e7f8..00000000
--- a/plugins/nyash-test-multibox/Cargo.toml
+++ /dev/null
@@ -1,9 +0,0 @@
-[package]
-name = "nyash-test-multibox"
-version = "0.1.0"
-edition = "2021"
-
-[lib]
-crate-type = ["cdylib", "staticlib"]
-
-[dependencies]
diff --git a/plugins/nyash-test-multibox/libnyash_test_multibox.a b/plugins/nyash-test-multibox/libnyash_test_multibox.a
deleted file mode 100644
index ac2c398c..00000000
Binary files a/plugins/nyash-test-multibox/libnyash_test_multibox.a and /dev/null differ
diff --git a/plugins/nyash-test-multibox/src/lib.rs b/plugins/nyash-test-multibox/src/lib.rs
deleted file mode 100644
index 77db05b9..00000000
--- a/plugins/nyash-test-multibox/src/lib.rs
+++ /dev/null
@@ -1,362 +0,0 @@
-//! Test Multi-Box Plugin for Nyash
-//!
-//! Provides TestBoxA and TestBoxB to demonstrate multi-box plugin support
-
-use std::collections::HashMap;
-use std::os::raw::c_char;
-use std::ptr;
-use std::sync::Mutex;
-
-// ============ FFI Types ============
-
-#[repr(C)]
-pub struct NyashHostVtable {
-    pub alloc: unsafe extern "C" fn(size: usize) -> *mut u8,
-    pub free: unsafe extern "C" fn(ptr: *mut u8),
-    pub wake: unsafe extern "C" fn(handle: u64),
-    pub log: unsafe extern "C" fn(level: i32, msg: *const c_char),
-}
-
-#[repr(C)]
-pub struct NyashMethodInfo {
-    pub method_id: u32,
-    pub name: *const c_char,
-    pub signature: u32,
-}
-
-unsafe impl Sync for NyashMethodInfo {}
-
-#[repr(C)]
-pub struct NyashPluginInfo {
-    pub type_id: u32,
-    pub type_name: *const c_char,
-    pub method_count: usize,
-    pub methods: *const NyashMethodInfo,
-}
-
-unsafe impl Sync for NyashPluginInfo {}
-
-// Error codes
-const NYB_SUCCESS: i32 = 0;
-const NYB_E_INVALID_ARGS: i32 = -4;
-const NYB_E_INVALID_HANDLE: i32 = -8;
-
-// Method IDs
-const METHOD_BIRTH: u32 = 0;
-const METHOD_HELLO: u32 = 1;
-const METHOD_GREET: u32 = 2;
-const METHOD_FINI: u32 = u32::MAX;
-
-// Type IDs
-const TYPE_ID_TESTBOX_A: u32 = 200;
-const TYPE_ID_TESTBOX_B: u32 = 201;
-
-// Global state
-static mut HOST_VTABLE: Option<&'static NyashHostVtable> = None;
-static mut INSTANCES: Option<Mutex<HashMap<u32, TestInstance>>> = None;
-static mut INSTANCE_COUNTER: u32 = 1;
-
-enum TestInstance {
-    BoxA { message: String },
-    BoxB { counter: i32 },
-}
-
-// ============ Plugin Info for Each Box Type ============
-
-static TESTBOX_A_NAME: &[u8] = b"TestBoxA\0";
-static TESTBOX_B_NAME: &[u8] = b"TestBoxB\0";
-
-static METHOD_HELLO_NAME: &[u8] = b"hello\0";
-static METHOD_GREET_NAME: &[u8] = b"greet\0";
-static METHOD_BIRTH_NAME: &[u8] = b"birth\0";
-static METHOD_FINI_NAME: &[u8] = b"fini\0";
-
-static TESTBOX_A_METHODS: [NyashMethodInfo; 3] = [
-    NyashMethodInfo {
-        method_id: METHOD_BIRTH,
-        name: METHOD_BIRTH_NAME.as_ptr() as *const c_char,
-        signature: 0,
-    },
-    NyashMethodInfo {
-        method_id: METHOD_HELLO,
-        name: METHOD_HELLO_NAME.as_ptr() as *const c_char,
-        signature: 0,
-    },
-    NyashMethodInfo {
-        method_id: METHOD_FINI,
-        name: METHOD_FINI_NAME.as_ptr() as *const c_char,
-        signature: 0,
-    },
-];
-
-static TESTBOX_B_METHODS: [NyashMethodInfo; 3] = [
-    NyashMethodInfo {
-        method_id: METHOD_BIRTH,
-        name: METHOD_BIRTH_NAME.as_ptr() as *const c_char,
-        signature: 0,
-    },
-    NyashMethodInfo {
-        method_id: METHOD_GREET,
-        name: METHOD_GREET_NAME.as_ptr() as *const c_char,
-        signature: 0,
-    },
-    NyashMethodInfo {
-        method_id: METHOD_FINI,
-        name: METHOD_FINI_NAME.as_ptr() as *const c_char,
-        signature: 0,
-    },
-];
-
-static TESTBOX_A_INFO: NyashPluginInfo = NyashPluginInfo {
-    type_id: TYPE_ID_TESTBOX_A,
-    type_name: TESTBOX_A_NAME.as_ptr() as *const c_char,
-    method_count: 3,
-    methods: TESTBOX_A_METHODS.as_ptr(),
-};
-
-static TESTBOX_B_INFO: NyashPluginInfo = NyashPluginInfo {
-    type_id: TYPE_ID_TESTBOX_B,
-    type_name: TESTBOX_B_NAME.as_ptr() as *const c_char,
-    method_count: 3,
-    methods: TESTBOX_B_METHODS.as_ptr(),
-};
-
-// ============ Plugin Entry Points ============
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 {
-    1 // BID-1 ABI version
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init(
-    host: *const NyashHostVtable,
-    _info: *mut std::ffi::c_void, // For v2, we use get_box_info instead
-) -> i32 {
-    if host.is_null() {
-        return NYB_E_INVALID_ARGS;
-    }
-
-    unsafe {
-        HOST_VTABLE = Some(&*host);
-        INSTANCES = Some(Mutex::new(HashMap::new()));
-
-        // Log initialization
-        log_info("Multi-box test plugin initialized");
-    }
-
-    NYB_SUCCESS
-}
-
-// ============ Multi-Box v2 Functions ============
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_get_box_count() -> u32 {
-    2 // TestBoxA and TestBoxB
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_get_box_info(index: u32) -> *const NyashPluginInfo {
-    match index {
-        0 => &TESTBOX_A_INFO as *const NyashPluginInfo,
-        1 => &TESTBOX_B_INFO as *const NyashPluginInfo,
-        _ => ptr::null(),
-    }
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_get_type_id(box_name: *const c_char) -> u32 {
-    if box_name.is_null() {
-        return 0;
-    }
-
-    unsafe {
-        let name = std::ffi::CStr::from_ptr(box_name).to_string_lossy();
-        match name.as_ref() {
-            "TestBoxA" => TYPE_ID_TESTBOX_A,
-            "TestBoxB" => TYPE_ID_TESTBOX_B,
-            _ => 0,
-        }
-    }
-}
-
-// ============ Method Invocation ============
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_invoke(
-    type_id: u32,
-    method_id: u32,
-    instance_id: u32,
-    _args: *const u8,
-    _args_len: usize,
-    result: *mut u8,
-    result_len: *mut usize,
-) -> i32 {
-    unsafe {
-        match (type_id, method_id) {
-            // TestBoxA methods
-            (TYPE_ID_TESTBOX_A, METHOD_BIRTH) => create_instance_a(result, result_len),
-            (TYPE_ID_TESTBOX_A, METHOD_HELLO) => hello_method(instance_id, result, result_len),
-            (TYPE_ID_TESTBOX_A, METHOD_FINI) => destroy_instance(instance_id),
-
-            // TestBoxB methods
-            (TYPE_ID_TESTBOX_B, METHOD_BIRTH) => create_instance_b(result, result_len),
-            (TYPE_ID_TESTBOX_B, METHOD_GREET) => greet_method(instance_id, result, result_len),
-            (TYPE_ID_TESTBOX_B, METHOD_FINI) => destroy_instance(instance_id),
-
-            _ => NYB_E_INVALID_ARGS,
-        }
-    }
-}
-
-// ============ Method Implementations ============
-
-unsafe fn create_instance_a(result: *mut u8, result_len: *mut usize) -> i32 {
-    if let Some(ref mutex) = INSTANCES {
-        if let Ok(mut map) = mutex.lock() {
-            let id = INSTANCE_COUNTER;
-            INSTANCE_COUNTER += 1;
-
-            map.insert(
-                id,
-                TestInstance::BoxA {
-                    message: "Hello from TestBoxA!".to_string(),
-                },
-            );
-
-            // Return instance ID
-            if *result_len >= 4 {
-                let bytes = id.to_le_bytes();
-                ptr::copy_nonoverlapping(bytes.as_ptr(), result, 4);
-                *result_len = 4;
-
-                log_info(&format!("Created TestBoxA instance {}", id));
-                return NYB_SUCCESS;
-            }
-        }
-    }
-    NYB_E_INVALID_ARGS
-}
-
-unsafe fn create_instance_b(result: *mut u8, result_len: *mut usize) -> i32 {
-    if let Some(ref mutex) = INSTANCES {
-        if let Ok(mut map) = mutex.lock() {
-            let id = INSTANCE_COUNTER;
-            INSTANCE_COUNTER += 1;
-
-            map.insert(id, TestInstance::BoxB { counter: 0 });
-
-            // Return instance ID
-            if *result_len >= 4 {
-                let bytes = id.to_le_bytes();
-                ptr::copy_nonoverlapping(bytes.as_ptr(), result, 4);
-                *result_len = 4;
-
-                log_info(&format!("Created TestBoxB instance {}", id));
-                return NYB_SUCCESS;
-            }
-        }
-    }
-    NYB_E_INVALID_ARGS
-}
-
-unsafe fn hello_method(instance_id: u32, result: *mut u8, result_len: *mut usize) -> i32 {
-    if let Some(ref mutex) = INSTANCES {
-        if let Ok(map) = mutex.lock() {
-            if let Some(TestInstance::BoxA { message }) = map.get(&instance_id) {
-                // Return message as TLV string
-                write_tlv_string(message, result, result_len)
-            } else {
-                NYB_E_INVALID_HANDLE
-            }
-        } else {
-            NYB_E_INVALID_ARGS
-        }
-    } else {
-        NYB_E_INVALID_ARGS
-    }
-}
-
-unsafe fn greet_method(instance_id: u32, result: *mut u8, result_len: *mut usize) -> i32 {
-    if let Some(ref mutex) = INSTANCES {
-        if let Ok(mut map) = mutex.lock() {
-            if let Some(TestInstance::BoxB { counter }) = map.get_mut(&instance_id) {
-                *counter += 1;
-                let message = format!("Greeting #{} from TestBoxB!", counter);
-
-                // Return message as TLV string
-                write_tlv_string(&message, result, result_len)
-            } else {
-                NYB_E_INVALID_HANDLE
-            }
-        } else {
-            NYB_E_INVALID_ARGS
-        }
-    } else {
-        NYB_E_INVALID_ARGS
-    }
-}
-
-unsafe fn destroy_instance(instance_id: u32) -> i32 {
-    if let Some(ref mutex) = INSTANCES {
-        if let Ok(mut map) = mutex.lock() {
-            if map.remove(&instance_id).is_some() {
-                log_info(&format!("Destroyed instance {}", instance_id));
-                NYB_SUCCESS
-            } else {
-                NYB_E_INVALID_HANDLE
-            }
-        } else {
-            NYB_E_INVALID_ARGS
-        }
-    } else {
-        NYB_E_INVALID_ARGS
-    }
-}
-
-// ============ Helper Functions ============
-
-unsafe fn write_tlv_string(s: &str, result: *mut u8, result_len: *mut usize) -> i32 {
-    let bytes = s.as_bytes();
-    let needed = 8 + bytes.len(); // header(4) + entry(4) + string
-
-    if *result_len < needed {
-        return NYB_E_INVALID_ARGS;
-    }
-
-    // TLV header
-    *result = 1; // version low
-    *result.offset(1) = 0; // version high
-    *result.offset(2) = 1; // argc low
-    *result.offset(3) = 0; // argc high
-
-    // String entry
-    *result.offset(4) = 6; // Tag::String
-    *result.offset(5) = 0; // padding
-    let len_bytes = (bytes.len() as u16).to_le_bytes();
-    *result.offset(6) = len_bytes[0];
-    *result.offset(7) = len_bytes[1];
-
-    // String data
-    ptr::copy_nonoverlapping(bytes.as_ptr(), result.offset(8), bytes.len());
-
-    *result_len = needed;
-    NYB_SUCCESS
-}
-
-unsafe fn log_info(message: &str) {
-    if let Some(vtable) = HOST_VTABLE {
-        if let Ok(c_str) = std::ffi::CString::new(message) {
-            (vtable.log)(1, c_str.as_ptr());
-        }
-    }
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_shutdown() {
-    unsafe {
-        log_info("Multi-box test plugin shutting down");
-        INSTANCES = None;
-        HOST_VTABLE = None;
-    }
-}
diff --git a/plugins/nyash-toml-plugin/src/lib.rs b/plugins/nyash-toml-plugin/src/lib.rs
index b2910341..7f588b0d 100644
--- a/plugins/nyash-toml-plugin/src/lib.rs
+++ b/plugins/nyash-toml-plugin/src/lib.rs
@@ -30,15 +30,7 @@ struct TomlInstance {
 static INST: Lazy<Mutex<HashMap<u32, TomlInstance>>> = Lazy::new(|| Mutex::new(HashMap::new()));
 static NEXT_ID: AtomicU32 = AtomicU32::new(1);
 
-#[no_mangle]
-pub extern "C" fn nyash_plugin_abi() -> u32 {
-    1
-}
-
-#[no_mangle]
-pub extern "C" fn nyash_plugin_init() -> i32 {
-    OK
-}
+// legacy v1 abi/init removed
 
 /* legacy v1 entry removed
 #[no_mangle]