diff --git a/polyapi/cli.py b/polyapi/cli.py
index 14f21a2..ef2a2a9 100644
--- a/polyapi/cli.py
+++ b/polyapi/cli.py
@@ -3,8 +3,9 @@
 from polyapi.utils import print_green
 
 from .config import clear_config, set_api_key_and_url
-from .generate import generate, clear, save_rendered_specs
+from .generate import generate, clear
 from .function_cli import function_add_or_update
+from .rendered_spec import save_rendered_specs
 
 
 CLI_COMMANDS = ["setup", "generate", "function", "clear", "help", "save_rendered_specs"]
diff --git a/polyapi/function_cli.py b/polyapi/function_cli.py
index 0cbbb7a..9e461c3 100644
--- a/polyapi/function_cli.py
+++ b/polyapi/function_cli.py
@@ -13,6 +13,7 @@
 from polyapi.generate import get_functions_and_parse, generate_functions
 from polyapi.config import get_api_key_and_url
 from polyapi.constants import PYTHON_TO_JSONSCHEMA_TYPE_MAP
+# from polyapi.rendered_spec import update_rendered_spec
 from polyapi.utils import get_auth_headers, print_green, print_red, print_yellow
 import importlib
 
@@ -270,6 +271,7 @@ def function_add_or_update(
         print(f"Function ID: {function_id}")
         print("Generating new custom function...", end="")
         functions = get_functions_and_parse(limit_ids=[function_id])
+        # update_rendered_spec(functions[0])
         generate_functions(functions)
         print_green("DONE")
     else:
diff --git a/polyapi/generate.py b/polyapi/generate.py
index de518e0..a4f429e 100644
--- a/polyapi/generate.py
+++ b/polyapi/generate.py
@@ -6,7 +6,6 @@
 
 from polyapi.auth import render_auth_function
 from polyapi.client import render_client_function
-from polyapi.execute import execute_post
 from polyapi.webhook import render_webhook_handle
 
 from .typedefs import PropertySpecification, SpecificationDto, VariableSpecDto
@@ -157,24 +156,6 @@ def clear() -> None:
     print("Cleared!")
 
 
-def save_rendered_specs() -> None:
-    specs = read_cached_specs()
-    # right now we just support rendered apiFunctions
-    api_specs = [spec for spec in specs if spec["type"] == "apiFunction"]
-    for spec in api_specs:
-        assert spec["function"]
-        func_str, type_defs = render_spec(spec)
-        data = {
-            "language": "python",
-            "apiFunctionId": spec["id"],
-            "signature": func_str,
-            "typedefs": type_defs,
-        }
-        resp = execute_post("/functions/rendered-specs", data)
-        print("adding", spec["context"], spec["name"])
-        assert resp.status_code == 201, (resp.text, resp.status_code)
-
-
 def render_spec(spec: SpecificationDto):
     function_type = spec["type"]
     function_description = spec["description"]
diff --git a/polyapi/rendered_spec.py b/polyapi/rendered_spec.py
new file mode 100644
index 0000000..f5e9543
--- /dev/null
+++ b/polyapi/rendered_spec.py
@@ -0,0 +1,34 @@
+from typing import Dict
+from polyapi.generate import read_cached_specs, render_spec
+from polyapi.execute import execute_post
+from polyapi.typedefs import SpecificationDto
+
+
+def update_rendered_spec(spec: SpecificationDto):
+    print("Updating rendered spec...")
+    func_str, type_defs = render_spec(spec)
+    data = {
+        "language": "python",
+        "signature": func_str,
+        "typedefs": type_defs,
+    }
+    if spec["type"] == "apiFunction":
+        data["apiFunctionId"] = spec["id"]
+    elif spec["type"] == "serverFunction":
+        data["customFunctionId"] = spec["id"]
+    else:
+        raise NotImplementedError("todo")
+
+    resp = execute_post("/functions/rendered-specs", data)
+    assert resp.status_code == 201, (resp.text, resp.status_code)
+    # this needs to run with something like `kn func run...`
+
+
+def save_rendered_specs() -> None:
+    specs = read_cached_specs()
+    # right now we just support rendered apiFunctions
+    api_specs = [spec for spec in specs if spec["type"] == "apiFunction"]
+    for spec in api_specs:
+        assert spec["function"]
+        print("adding", spec["context"], spec["name"])
+        update_rendered_spec(spec)
diff --git a/pyproject.toml b/pyproject.toml
index 7cff949..d77e224 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ requires = ["setuptools>=61.2", "wheel"]
 
 [project]
 name = "polyapi-python"
-version = "0.2.5.dev1"
+version = "0.2.5.dev2"
 description = "The Python Client for PolyAPI, the IPaaS by Developers for Developers"
 authors = [{ name = "Dan Fellin", email = "dan@polyapi.io" }]
 dependencies = [