diff --git a/registry/coder/modules/agentapi/main.test.ts b/registry/coder/modules/agentapi/main.test.ts
index cedf840c..be17bb4d 100644
--- a/registry/coder/modules/agentapi/main.test.ts
+++ b/registry/coder/modules/agentapi/main.test.ts
@@ -59,7 +59,6 @@ const setup = async (props?: SetupProps): Promise<{ id: string }> => {
       cli_app_slug: "agentapi-cli",
       agentapi_version: "latest",
       module_dir_name: moduleDirName,
-      start_script: await loadTestFile(import.meta.dir, "agentapi-start.sh"),
       folder: projectDir,
       ...props?.moduleVariables,
     },
@@ -73,6 +72,15 @@ const setup = async (props?: SetupProps): Promise<{ id: string }> => {
     filePath: "/usr/bin/aiagent",
     content: await loadTestFile(import.meta.dir, "ai-agent-mock.js"),
   });
+  // Write the test start script directly to the module scripts dir,
+  // since start_script is no longer a Terraform variable.
+  const startScript = await loadTestFile(import.meta.dir, "agentapi-start.sh");
+  await execContainer(id, ["bash", "-c", `mkdir -p /home/coder/${moduleDirName}/scripts`]);
+  await writeExecutable({
+    containerId: id,
+    filePath: `/home/coder/${moduleDirName}/scripts/agentapi-start.sh`,
+    content: startScript,
+  });
   return { id };
 };
 
@@ -104,36 +112,6 @@ describe("agentapi", async () => {
     await expectAgentAPIStarted(id, 3827);
   });
 
-  test("pre-post-install-scripts", async () => {
-    const { id } = await setup({
-      moduleVariables: {
-        pre_install_script: `#!/bin/bash\necho "pre-install"`,
-        install_script: `#!/bin/bash\necho "install"`,
-        post_install_script: `#!/bin/bash\necho "post-install"`,
-      },
-    });
-
-    await execModuleScript(id);
-    await expectAgentAPIStarted(id);
-
-    const preInstallLog = await readFileContainer(
-      id,
-      `/home/coder/${moduleDirName}/pre_install.log`,
-    );
-    const installLog = await readFileContainer(
-      id,
-      `/home/coder/${moduleDirName}/install.log`,
-    );
-    const postInstallLog = await readFileContainer(
-      id,
-      `/home/coder/${moduleDirName}/post_install.log`,
-    );
-
-    expect(preInstallLog).toContain("pre-install");
-    expect(installLog).toContain("install");
-    expect(postInstallLog).toContain("post-install");
-  });
-
   test("install-agentapi", async () => {
     const { id } = await setup({ skipAgentAPIMock: true });
 
@@ -397,7 +375,7 @@ describe("agentapi", async () => {
       return await execContainer(containerId, [
         "bash",
         "-c",
-        `ARG_TASK_ID=${taskId} ARG_AGENTAPI_PORT=3284 ARG_PID_FILE_PATH=${pidFilePath} ARG_ENABLE_STATE_PERSISTENCE=${enableStatePersistence} CODER_AGENT_URL=http://localhost:18080 CODER_AGENT_TOKEN=test-token /tmp/shutdown.sh`,
+        `ARG_TASK_ID=${taskId} ARG_AGENTAPI_PORT=3284 ARG_PID_FILE_PATH=${pidFilePath} ARG_ENABLE_STATE_PERSISTENCE=${enableStatePersistence} ARG_LIB_SCRIPT_PATH=/tmp/agentapi-lib.sh CODER_AGENT_URL=http://localhost:18080 CODER_AGENT_TOKEN=test-token /tmp/shutdown.sh`,
       ]);
     };
 
@@ -572,7 +550,7 @@ describe("agentapi", async () => {
       const result = await execContainer(id, [
         "bash",
         "-c",
-        `ARG_TASK_ID=test-task ARG_AGENTAPI_PORT=3284 ARG_MODULE_DIR_NAME=${moduleDirName} ARG_ENABLE_STATE_PERSISTENCE=true CODER_AGENT_URL=http://localhost:18080 CODER_AGENT_TOKEN=test-token /tmp/shutdown.sh`,
+        `ARG_TASK_ID=test-task ARG_AGENTAPI_PORT=3284 ARG_MODULE_DIR_NAME=${moduleDirName} ARG_ENABLE_STATE_PERSISTENCE=true ARG_LIB_SCRIPT_PATH=/tmp/agentapi-lib.sh CODER_AGENT_URL=http://localhost:18080 CODER_AGENT_TOKEN=test-token /tmp/shutdown.sh`,
       ]);
 
       expect(result.exitCode).toBe(0);
diff --git a/registry/coder/modules/agentapi/scripts/main.sh b/registry/coder/modules/agentapi/scripts/main.sh
index 09cdb288..f446fed9 100644
--- a/registry/coder/modules/agentapi/scripts/main.sh
+++ b/registry/coder/modules/agentapi/scripts/main.sh
@@ -5,13 +5,9 @@ set -x
 set -o nounset
 MODULE_DIR_NAME="$ARG_MODULE_DIR_NAME"
 WORKDIR="$ARG_WORKDIR"
-PRE_INSTALL_SCRIPT="$ARG_PRE_INSTALL_SCRIPT"
-INSTALL_SCRIPT="$ARG_INSTALL_SCRIPT"
 INSTALL_AGENTAPI="$ARG_INSTALL_AGENTAPI"
 AGENTAPI_VERSION="$ARG_AGENTAPI_VERSION"
-START_SCRIPT="$ARG_START_SCRIPT"
 WAIT_FOR_START_SCRIPT="$ARG_WAIT_FOR_START_SCRIPT"
-POST_INSTALL_SCRIPT="$ARG_POST_INSTALL_SCRIPT"
 AGENTAPI_PORT="$ARG_AGENTAPI_PORT"
 AGENTAPI_CHAT_BASE_PATH="${ARG_AGENTAPI_CHAT_BASE_PATH:-}"
 TASK_ID="${ARG_TASK_ID:-}"
@@ -45,18 +41,6 @@ if [ ! -d "${WORKDIR}" ]; then
   mkdir -p "${WORKDIR}"
   echo "Folder created successfully."
 fi
-if [ -n "${PRE_INSTALL_SCRIPT}" ]; then
-  echo "Running pre-install script..."
-  echo -n "${PRE_INSTALL_SCRIPT}" > "$module_path/pre_install.sh"
-  chmod +x "$module_path/pre_install.sh"
-  "$module_path/pre_install.sh" 2>&1 | tee "$module_path/pre_install.log"
-fi
-
-echo "Running install script..."
-echo -n "${INSTALL_SCRIPT}" > "$module_path/install.sh"
-chmod +x "$module_path/install.sh"
-"$module_path/install.sh" 2>&1 | tee "$module_path/install.log"
-
 # Install AgentAPI if enabled
 if [ "${INSTALL_AGENTAPI}" = "true" ]; then
   echo "Installing AgentAPI..."
@@ -93,18 +77,9 @@ if ! command_exists agentapi; then
   exit 1
 fi
 
-echo -n "${START_SCRIPT}" > "$module_path/scripts/agentapi-start.sh"
 echo -n "${WAIT_FOR_START_SCRIPT}" > "$module_path/scripts/agentapi-wait-for-start.sh"
-chmod +x "$module_path/scripts/agentapi-start.sh"
 chmod +x "$module_path/scripts/agentapi-wait-for-start.sh"
 
-if [ -n "${POST_INSTALL_SCRIPT}" ]; then
-  echo "Running post-install script..."
-  echo -n "${POST_INSTALL_SCRIPT}" > "$module_path/post_install.sh"
-  chmod +x "$module_path/post_install.sh"
-  "$module_path/post_install.sh" 2>&1 | tee "$module_path/post_install.log"
-fi
-
 export LANG=en_US.UTF-8
 export LC_ALL=en_US.UTF-8