diff --git a/Cargo.lock b/Cargo.lock
index f7b49cb..263886a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -273,6 +273,7 @@ dependencies = [
  "iana-time-zone",
  "js-sys",
  "num-traits",
+ "serde",
  "wasm-bindgen",
  "windows-link",
 ]
@@ -1054,6 +1055,26 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "oauth2"
+version = "5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "51e219e79014df21a225b1860a479e2dcd7cbd9130f4defd4bd0e191ea31d67d"
+dependencies = [
+ "base64",
+ "chrono",
+ "getrandom 0.2.16",
+ "http",
+ "rand 0.8.5",
+ "reqwest",
+ "serde",
+ "serde_json",
+ "serde_path_to_error",
+ "sha2",
+ "thiserror 1.0.69",
+ "url",
+]
+
 [[package]]
 name = "object"
 version = "0.36.7"
@@ -1734,6 +1755,16 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serde_path_to_error"
+version = "0.1.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af99884400da37c88f5e9146b7f1fd0fbcae8f6eec4e9da38b67d05486f814a6"
+dependencies = [
+ "itoa",
+ "serde",
+]
+
 [[package]]
 name = "serde_urlencoded"
 version = "0.7.1"
@@ -1984,6 +2015,7 @@ name = "tmf-client"
 version = "0.1.9"
 dependencies = [
  "env_logger",
+ "oauth2",
  "reqwest",
  "serde",
  "serde_json",
@@ -2190,6 +2222,7 @@ dependencies = [
  "form_urlencoded",
  "idna",
  "percent-encoding",
+ "serde",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index aadc5df..d9d6fec 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,12 +23,16 @@ tmf674 = ["tmflib/tmf674"]
 v4 = ["tmflib/build-V4"]
 v5 = ["tmflib/build-V5"]
 insecure = []
-default = ["tmf620","tmf622","tmf629","tmf632","tmf633","tmf637","tmf638","tmf639","tmf645","tmf648","tmf663","tmf674","v4","insecure"]
+oauth2 = ["dep:oauth2"]
+default = ["tmf620","tmf622","tmf629","tmf632","tmf633","tmf637","tmf638","tmf639","tmf645","tmf648","tmf663","tmf674","v4","insecure","oauth2"]
 
 [dependencies]
-env_logger = "0.11.8"
+env_logger = "0.11.5"
+oauth2 = { version = "5.0.0", optional = true}
 reqwest = {version = "0.12.22", features = ["blocking","rustls-tls"]}
-serde = "1.0.219"
-serde_json = "1.0.141"
+serde = "1.0.214"
+serde_json = "1.0.132"
+tmflib = "0.1.22"
+
 thiserror = "2.0.12"
-tmflib = "0.1.31"
+
diff --git a/src/lib.rs b/src/lib.rs
index 0e4e2b3..5040a94 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -61,7 +61,7 @@ pub struct QueryOptions {
     pub limit : Option<u16>,
     /// Offset the results returned
     pub offset : Option<u16>,
-    /// Filter on name
+    /// Simple filter on name field, if it exists.
     pub name : Option<String>,
 }
 
@@ -160,6 +160,18 @@ pub trait Operations {
     /// Create a new instance of a TMF object
     fn create(&self, item : Self::TMF) -> Result<Self::TMF,TMFError>;
     /// Update an existing TMF Object using the provided patch object
+    /// Update an existing TMF object
+    /// ```
+    /// # use tmf_client::{TMFClient,Operations};
+    /// use tmflib::tmf620::category::Category;
+    /// use tmflib::{HasId,HasName};
+    /// let mut existing = Category::new("My Category");
+    /// existing.set_name("New Category Name");
+    /// let result = TMFClient::new("http://localhost:8080")
+    ///     .tmf620()
+    ///     .category()
+    ///     .update(existing.get_id(),existing);
+    /// ```
     fn update(&self, id : impl Into<String>, patch : Self::TMF) -> Result<Self::TMF,TMFError>;
     /// Delete a specific tmf object by Id
     /// ```
diff --git a/src/tmf/mod.rs b/src/tmf/mod.rs
index 2e61054..ecd5015 100644
--- a/src/tmf/mod.rs
+++ b/src/tmf/mod.rs
@@ -6,8 +6,19 @@ use std::io::Read;
 use crate::QueryOptions;
 use crate::common::tmf_error::TMFError;
 use tmflib::{HasId,Uri};
-use serde::{de::DeserializeOwned, Serialize};
-// use log::info;
+use serde::de::DeserializeOwned;
+use serde::Serialize;
+
+#[cfg(feature = "oauth2")]
+use oauth2::basic::BasicClient;
+
+#[cfg(feature = "oauth2")]
+use oauth2::{
+    ClientId,
+    ClientSecret,
+    AuthUrl,
+    TokenUrl
+};
 
 #[cfg(feature = "tmf620")]
 pub mod tmf620;
@@ -36,6 +47,17 @@ pub mod tmf674;
 
 static USER_AGENT : &str = concat!(env!("CARGO_PKG_NAME"), "/", env!("CARGO_PKG_VERSION"));
 
+/// Get a new OAuth toekn
+#[cfg(feature = "oauth2")]
+pub fn get_token() {
+    // let _client = BasicClient::new(
+    //     ClientId::new(std::env::var("OAUTH_CLIENT_ID").unwrap()),
+    //     Some(ClientSecret::new(std::env::var("OAUTH_CLIENT_SECRET").unwrap())),
+    //     AuthUrl::new(std::env::var("OAUTH_AUTH_URL").unwrap()).unwrap(),
+    //     Some(TokenUrl::new(std::env::var("OAUTH_TOKEN_URL").unwrap()).unwrap())
+    // );
+}
+
 /// Make API call to retrieve a single TMF object
 pub fn get_tmf<T : HasId + DeserializeOwned>(host: Uri, id : String) -> Result<Vec<T>,TMFError> {
     // Return results