diff --git a/crates/c-api/src/linker.rs b/crates/c-api/src/linker.rs
index b712e4a9b8..d5ad429fdd 100644
--- a/crates/c-api/src/linker.rs
+++ b/crates/c-api/src/linker.rs
@@ -12,6 +12,8 @@ pub struct wasmtime_linker_t {
     linker: Linker<crate::StoreData>,
 }
 
+wasmtime_c_api_macros::declare_own!(wasmtime_linker_t);
+
 #[no_mangle]
 pub extern "C" fn wasmtime_linker_new(engine: &wasm_engine_t) -> Box<wasmtime_linker_t> {
     Box::new(wasmtime_linker_t {
@@ -27,9 +29,6 @@ pub extern "C" fn wasmtime_linker_allow_shadowing(
     linker.linker.allow_shadowing(allow_shadowing);
 }
 
-#[no_mangle]
-pub extern "C" fn wasmtime_linker_delete(_linker: Box<wasmtime_linker_t>) {}
-
 macro_rules! to_str {
     ($ptr:expr, $len:expr) => {
         match str::from_utf8(crate::slice_from_raw_parts($ptr, $len)) {
diff --git a/crates/c-api/src/module.rs b/crates/c-api/src/module.rs
index 1efa1abbd5..a1dce26493 100644
--- a/crates/c-api/src/module.rs
+++ b/crates/c-api/src/module.rs
@@ -127,6 +127,8 @@ pub struct wasmtime_module_t {
     pub(crate) module: Module,
 }
 
+wasmtime_c_api_macros::declare_own!(wasmtime_module_t);
+
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_module_new(
     engine: &wasm_engine_t,
@@ -142,9 +144,6 @@ pub unsafe extern "C" fn wasmtime_module_new(
     )
 }
 
-#[no_mangle]
-pub extern "C" fn wasmtime_module_delete(_module: Box<wasmtime_module_t>) {}
-
 #[no_mangle]
 pub extern "C" fn wasmtime_module_clone(module: &wasmtime_module_t) -> Box<wasmtime_module_t> {
     Box::new(module.clone())
diff --git a/crates/c-api/src/ref.rs b/crates/c-api/src/ref.rs
index f6be82acaf..7e1d3912b5 100644
--- a/crates/c-api/src/ref.rs
+++ b/crates/c-api/src/ref.rs
@@ -195,49 +195,9 @@ pub extern "C" fn wasm_ref_as_trap_const(_ref: Option<&wasm_ref_t>) -> Option<&c
 #[repr(C)]
 pub struct wasm_foreign_t {}
 
+wasmtime_c_api_macros::declare_ref!(wasm_foreign_t);
+
 #[no_mangle]
 pub extern "C" fn wasm_foreign_new(_store: &crate::wasm_store_t) -> Box<wasm_foreign_t> {
     abort("wasm_foreign_new")
 }
-
-#[no_mangle]
-pub extern "C" fn wasm_foreign_delete(_foreign: Box<wasm_foreign_t>) {}
-
-#[no_mangle]
-pub extern "C" fn wasm_foreign_copy(r: &wasm_foreign_t) -> Box<wasm_foreign_t> {
-    Box::new(r.clone())
-}
-
-#[no_mangle]
-pub extern "C" fn wasm_foreign_same(_a: &wasm_foreign_t, _b: &wasm_foreign_t) -> bool {
-    abort("wasm_foreign_same")
-}
-
-#[no_mangle]
-pub extern "C" fn wasm_foreign_get_host_info(_foreign: &wasm_foreign_t) -> *mut c_void {
-    std::ptr::null_mut()
-}
-
-#[no_mangle]
-pub extern "C" fn wasm_foreign_set_host_info(_foreign: &wasm_foreign_t, _info: *mut c_void) {
-    abort("wasm_foreign_set_host_info")
-}
-
-#[no_mangle]
-pub extern "C" fn wasm_foreign_set_host_info_with_finalizer(
-    _foreign: &wasm_foreign_t,
-    _info: *mut c_void,
-    _finalizer: Option<extern "C" fn(*mut c_void)>,
-) {
-    abort("wasm_foreign_set_host_info_with_finalizer")
-}
-
-#[no_mangle]
-pub extern "C" fn wasm_foreign_as_ref(_: &wasm_foreign_t) -> &wasm_ref_t {
-    abort("wasm_foreign_as_ref")
-}
-
-#[no_mangle]
-pub extern "C" fn wasm_foreign_as_ref_const(_: &wasm_foreign_t) -> Option<&wasm_ref_t> {
-    abort("wasm_foreign_as_ref_const")
-}
diff --git a/crates/c-api/src/store.rs b/crates/c-api/src/store.rs
index 711eb1d9ad..cac07b0ca3 100644
--- a/crates/c-api/src/store.rs
+++ b/crates/c-api/src/store.rs
@@ -60,6 +60,8 @@ pub struct wasmtime_store_t {
     pub(crate) store: Store<StoreData>,
 }
 
+wasmtime_c_api_macros::declare_own!(wasmtime_store_t);
+
 pub type CStoreContext<'a> = StoreContext<'a, StoreData>;
 pub type CStoreContextMut<'a> = StoreContextMut<'a, StoreData>;
 
@@ -77,9 +79,6 @@ pub struct StoreData {
     pub wasm_val_storage: Vec<Val>,
 }
 
-#[no_mangle]
-pub extern "C" fn wasmtime_store_delete(_: Box<wasmtime_store_t>) {}
-
 #[no_mangle]
 pub extern "C" fn wasmtime_store_new(
     engine: &wasm_engine_t,
diff --git a/crates/c-api/src/wasi.rs b/crates/c-api/src/wasi.rs
index ff6a2f110d..1d197473b3 100644
--- a/crates/c-api/src/wasi.rs
+++ b/crates/c-api/src/wasi.rs
@@ -40,6 +40,8 @@ pub struct wasi_config_t {
     inherit_stderr: bool,
 }
 
+wasmtime_c_api_macros::declare_own!(wasi_config_t);
+
 impl wasi_config_t {
     pub fn into_wasi_ctx(self) -> Result<WasiCtx> {
         let mut builder = WasiCtxBuilder::new();
@@ -100,9 +102,6 @@ pub extern "C" fn wasi_config_new() -> Box<wasi_config_t> {
     Box::new(wasi_config_t::default())
 }
 
-#[no_mangle]
-pub extern "C" fn wasi_config_delete(_config: Box<wasi_config_t>) {}
-
 #[no_mangle]
 pub unsafe extern "C" fn wasi_config_set_argv(
     config: &mut wasi_config_t,