diff --git a/Cargo.lock b/Cargo.lock
index 3439147..a1c3fd2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1089,9 +1089,9 @@ dependencies = [
  "critical-section",
  "embassy-executor",
  "embedded-alloc",
+ "libsyscall-caliptra",
  "libtock",
  "libtock_alarm",
- "libtock_caliptra",
  "libtock_console",
  "libtock_debug_panic",
  "libtock_platform",
@@ -1483,15 +1483,6 @@ dependencies = [
  "libtock_unittest",
 ]
 
-[[package]]
-name = "libtock_caliptra"
-version = "0.1.0"
-dependencies = [
- "libtock_console",
- "libtock_platform",
- "libtockasync",
-]
-
 [[package]]
 name = "libtock_console"
 version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
index 0498351..bedb6b9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,6 @@ members = [
     "romtime",
     "runtime",
     "runtime/apps/example",
-    "runtime/apps/apis",
     "runtime/apps/libtock/apis/interface/buttons",
     "runtime/apps/libtock/apis/interface/buzzer",
     "runtime/apps/libtock/apis/interface/console",
@@ -131,7 +130,6 @@ libtock_debug_panic = { path = "runtime/apps/libtock/panic_handlers/debug_panic"
 libtock_platform = { path = "runtime/apps/libtock/platform" }
 libtock_runtime = { path = "runtime/apps/libtock/runtime" }
 libtock_unittest = { path = "runtime/apps/libtock/unittest" }
-libtock_caliptra = { path = "runtime/apps/apis" }
 libsyscall-caliptra = { path = "runtime/apps/syscall" }
 
 # caliptra dependencies; keep git revs in sync
diff --git a/runtime/apps/apis/Cargo.toml b/runtime/apps/apis/Cargo.toml
deleted file mode 100644
index 8e65398..0000000
--- a/runtime/apps/apis/Cargo.toml
+++ /dev/null
@@ -1,12 +0,0 @@
-# Licensed under the Apache-2.0 license
-
-[package]
-name = "libtock_caliptra"
-version.workspace = true
-authors.workspace = true
-edition.workspace = true
-
-[dependencies]
-libtock_console.workspace = true
-libtock_platform.workspace = true
-libtockasync.workspace = true
diff --git a/runtime/apps/apis/src/lib.rs b/runtime/apps/apis/src/lib.rs
deleted file mode 100644
index 03a892a..0000000
--- a/runtime/apps/apis/src/lib.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-// Licensed under the Apache-2.0 license
-
-#![no_std]
-
-pub mod mctp;
diff --git a/runtime/apps/example/Cargo.toml b/runtime/apps/example/Cargo.toml
index 753aeb8..ec9530c 100644
--- a/runtime/apps/example/Cargo.toml
+++ b/runtime/apps/example/Cargo.toml
@@ -9,8 +9,8 @@ edition.workspace = true
 [dependencies]
 critical-section.workspace = true
 embassy-executor.workspace = true
+libsyscall-caliptra.workspace = true
 libtock_alarm.workspace = true
-libtock_caliptra.workspace = true
 libtock_console.workspace = true
 libtock_debug_panic.workspace = true
 libtock_platform.workspace = true
diff --git a/runtime/apps/example/src/main.rs b/runtime/apps/example/src/main.rs
index 57d7fbc..8c3d40a 100644
--- a/runtime/apps/example/src/main.rs
+++ b/runtime/apps/example/src/main.rs
@@ -6,8 +6,8 @@
 #![allow(static_mut_refs)]
 
 use core::fmt::Write;
+use libsyscall_caliptra::mctp::{driver_num, Mctp};
 use libtock::alarm::*;
-use libtock_caliptra::mctp::{driver_num, Mctp};
 use libtock_console::Console;
 use libtock_platform::{self as platform};
 use libtock_platform::{DefaultConfig, ErrorCode, Syscalls};
diff --git a/runtime/apps/syscall/src/lib.rs b/runtime/apps/syscall/src/lib.rs
index 1a82009..3fd7d0d 100644
--- a/runtime/apps/syscall/src/lib.rs
+++ b/runtime/apps/syscall/src/lib.rs
@@ -4,3 +4,4 @@
 
 pub mod dma;
 pub mod mailbox;
+pub mod mctp;
diff --git a/runtime/apps/apis/src/mctp.rs b/runtime/apps/syscall/src/mctp.rs
similarity index 100%
rename from runtime/apps/apis/src/mctp.rs
rename to runtime/apps/syscall/src/mctp.rs