diff --git a/atrium-api/src/agent/inner.rs b/atrium-api/src/agent/inner.rs
index fb7473a4..37938abc 100644
--- a/atrium-api/src/agent/inner.rs
+++ b/atrium-api/src/agent/inner.rs
@@ -1,8 +1,8 @@
 use super::{Session, SessionStore};
 use crate::did_doc::DidDocument;
 use async_trait::async_trait;
-use atrium_xrpc::error::{Error, XrpcErrorKind};
-use atrium_xrpc::{HttpClient, OutputDataOrBytes, XrpcClient, XrpcRequest, XrpcResult};
+use atrium_xrpc::error::{Error, Result, XrpcErrorKind};
+use atrium_xrpc::{HttpClient, OutputDataOrBytes, XrpcClient, XrpcRequest};
 use http::{Method, Request, Response, Uri};
 use serde::{de::DeserializeOwned, Serialize};
 use std::sync::{Arc, RwLock};
@@ -25,7 +25,8 @@ where
     async fn send_http(
         &self,
         request: Request<Vec<u8>>,
-    ) -> Result<Response<Vec<u8>>, Box<dyn std::error::Error + Send + Sync + 'static>> {
+    ) -> core::result::Result<Response<Vec<u8>>, Box<dyn std::error::Error + Send + Sync + 'static>>
+    {
         self.inner.send_http(request).await
     }
 }
@@ -113,7 +114,7 @@ where
         &self,
     ) -> Result<
         crate::com::atproto::server::refresh_session::Output,
-        Error<crate::com::atproto::server::refresh_session::Error>,
+        crate::com::atproto::server::refresh_session::Error,
     > {
         let response = self
             .inner
@@ -130,7 +131,7 @@ where
             _ => Err(Error::UnexpectedResponseType),
         }
     }
-    fn is_expired<O, E>(result: &XrpcResult<O, E>) -> bool
+    fn is_expired<O, E>(result: &Result<OutputDataOrBytes<O>, E>) -> bool
     where
         O: DeserializeOwned + Send + Sync,
         E: DeserializeOwned + Send + Sync,
@@ -156,7 +157,8 @@ where
     async fn send_http(
         &self,
         request: Request<Vec<u8>>,
-    ) -> Result<Response<Vec<u8>>, Box<dyn std::error::Error + Send + Sync + 'static>> {
+    ) -> core::result::Result<Response<Vec<u8>>, Box<dyn std::error::Error + Send + Sync + 'static>>
+    {
         self.inner.send_http(request).await
     }
 }
@@ -171,7 +173,10 @@ where
     fn base_uri(&self) -> String {
         self.inner.base_uri()
     }
-    async fn send_xrpc<P, I, O, E>(&self, request: &XrpcRequest<P, I>) -> XrpcResult<O, E>
+    async fn send_xrpc<P, I, O, E>(
+        &self,
+        request: &XrpcRequest<P, I>,
+    ) -> Result<OutputDataOrBytes<O>, E>
     where
         P: Serialize + Send + Sync,
         I: Serialize + Send + Sync,
diff --git a/atrium-xrpc/src/error.rs b/atrium-xrpc/src/error.rs
index d76daf9f..dae3507c 100644
--- a/atrium-xrpc/src/error.rs
+++ b/atrium-xrpc/src/error.rs
@@ -1,7 +1,28 @@
 #![doc = "Error types."]
 use http::StatusCode;
+use serde::{Deserialize, Serialize};
 use std::fmt::{self, Debug, Display};
 
+/// An enum of possible error kinds.
+#[derive(thiserror::Error, Debug)]
+pub enum Error<E> {
+    #[error("xrpc response error: {0}")]
+    XrpcResponse(XrpcError<E>),
+    #[error("http request error: {0}")]
+    HttpRequest(#[from] http::Error),
+    #[error("http client error: {0}")]
+    HttpClient(Box<dyn std::error::Error + Send + Sync + 'static>),
+    #[error("serde_json error: {0}")]
+    SerdeJson(#[from] serde_json::Error),
+    #[error("serde_html_form error: {0}")]
+    SerdeHtmlForm(#[from] serde_html_form::ser::Error),
+    #[error("unexpected response type")]
+    UnexpectedResponseType,
+}
+
+/// Type alias to use this library's [`Error`] type in a [`Result`](core::result::Result).
+pub type Result<T, E> = core::result::Result<T, Error<E>>;
+
 /// [A standard error response schema](https://atproto.com/specs/xrpc#error-responses)
 ///
 /// ```typescript
@@ -11,7 +32,7 @@ use std::fmt::{self, Debug, Display};
 /// })
 /// export type ErrorResponseBody = z.infer<typeof errorResponseBody>
 /// ```
-#[derive(serde::Serialize, serde::Deserialize, Debug, Clone, PartialEq, Eq)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq)]
 pub struct ErrorResponseBody {
     pub error: Option<String>,
     pub message: Option<String>,
@@ -30,7 +51,7 @@ impl Display for ErrorResponseBody {
 /// An enum of possible XRPC error kinds.
 ///
 /// Error defined in Lexicon schema or other standard error.
-#[derive(serde::Serialize, serde::Deserialize, Debug, Clone, PartialEq, Eq)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq)]
 #[serde(untagged)]
 pub enum XrpcErrorKind<E> {
     Custom(E),
@@ -66,20 +87,3 @@ impl<E: Display> Display for XrpcError<E> {
         Ok(())
     }
 }
-
-/// An enum of possible error kinds.
-#[derive(thiserror::Error, Debug)]
-pub enum Error<E> {
-    #[error("xrpc response error: {0}")]
-    XrpcResponse(XrpcError<E>),
-    #[error("http request error: {0}")]
-    HttpRequest(#[from] http::Error),
-    #[error("http client error: {0}")]
-    HttpClient(Box<dyn std::error::Error + Send + Sync + 'static>),
-    #[error("serde_json error: {0}")]
-    SerdeJson(#[from] serde_json::Error),
-    #[error("serde_html_form error: {0}")]
-    SerdeHtmlForm(#[from] serde_html_form::ser::Error),
-    #[error("unexpected response type")]
-    UnexpectedResponseType,
-}
diff --git a/atrium-xrpc/src/lib.rs b/atrium-xrpc/src/lib.rs
index a131544d..654dbc9c 100644
--- a/atrium-xrpc/src/lib.rs
+++ b/atrium-xrpc/src/lib.rs
@@ -1,134 +1,19 @@
 #![doc = include_str!("../README.md")]
 pub mod error;
+mod traits;
+mod types;
 
-use crate::error::{Error, XrpcError, XrpcErrorKind};
-use async_trait::async_trait;
-use http::{Method, Request, Response};
-use serde::{de::DeserializeOwned, Serialize};
-
-/// A type which can be used as a parameter of [`XrpcRequest`].
-///
-/// JSON serializable data or raw bytes.
-pub enum InputDataOrBytes<T>
-where
-    T: Serialize,
-{
-    Data(T),
-    Bytes(Vec<u8>),
-}
-
-/// A type which can be used as a return value of [`XrpcClient::send_xrpc()`].
-///
-/// JSON deserializable data or raw bytes.
-pub enum OutputDataOrBytes<T>
-where
-    T: DeserializeOwned,
-{
-    Data(T),
-    Bytes(Vec<u8>),
-}
-
-/// An abstract HTTP client.
-#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
-#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
-pub trait HttpClient {
-    async fn send_http(
-        &self,
-        request: Request<Vec<u8>>,
-    ) -> Result<Response<Vec<u8>>, Box<dyn std::error::Error + Send + Sync + 'static>>;
-}
-
-/// A request which can be executed with [`XrpcClient::send_xrpc()`].
-pub struct XrpcRequest<P, I>
-where
-    I: Serialize,
-{
-    pub method: Method,
-    pub path: String,
-    pub parameters: Option<P>,
-    pub input: Option<InputDataOrBytes<I>>,
-    pub encoding: Option<String>,
-}
-
-pub type XrpcResult<O, E> = Result<OutputDataOrBytes<O>, self::Error<E>>;
-
-/// An abstract XRPC client.
-///
-/// [`send_xrpc()`](XrpcClient::send_xrpc) method has a default implementation,
-/// which wraps the [`HttpClient::send_http()`]` method to handle input and output as an XRPC Request.
-#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
-#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
-pub trait XrpcClient: HttpClient {
-    fn base_uri(&self) -> String;
-    #[allow(unused_variables)]
-    async fn auth(&self, is_refresh: bool) -> Option<String> {
-        None
-    }
-    async fn send_xrpc<P, I, O, E>(&self, request: &XrpcRequest<P, I>) -> XrpcResult<O, E>
-    where
-        P: Serialize + Send + Sync,
-        I: Serialize + Send + Sync,
-        O: DeserializeOwned + Send + Sync,
-        E: DeserializeOwned + Send + Sync,
-    {
-        let mut uri = format!("{}/xrpc/{}", self.base_uri(), request.path);
-        if let Some(p) = &request.parameters {
-            serde_html_form::to_string(p).map(|qs| {
-                uri += "?";
-                uri += &qs;
-            })?;
-        };
-        let mut builder = Request::builder().method(&request.method).uri(&uri);
-        if let Some(encoding) = &request.encoding {
-            builder = builder.header(http::header::CONTENT_TYPE, encoding);
-        }
-        if let Some(token) = self
-            .auth(
-                request.method == Method::POST
-                    && request.path == "com.atproto.server.refreshSession",
-            )
-            .await
-        {
-            builder = builder.header(http::header::AUTHORIZATION, format!("Bearer {}", token));
-        }
-        let body = if let Some(input) = &request.input {
-            match input {
-                InputDataOrBytes::Data(data) => serde_json::to_vec(&data)?,
-                InputDataOrBytes::Bytes(bytes) => bytes.clone(),
-            }
-        } else {
-            Vec::new()
-        };
-        let (parts, body) = self
-            .send_http(builder.body(body)?)
-            .await
-            .map_err(Error::HttpClient)?
-            .into_parts();
-        if parts.status.is_success() {
-            if parts
-                .headers
-                .get(http::header::CONTENT_TYPE)
-                .and_then(|value| value.to_str().ok())
-                .map_or(false, |content_type| {
-                    content_type.starts_with("application/json")
-                })
-            {
-                Ok(OutputDataOrBytes::Data(serde_json::from_slice(&body)?))
-            } else {
-                Ok(OutputDataOrBytes::Bytes(body))
-            }
-        } else {
-            Err(Error::XrpcResponse(XrpcError {
-                status: parts.status,
-                error: serde_json::from_slice::<XrpcErrorKind<E>>(&body).ok(),
-            }))
-        }
-    }
-}
+pub use crate::error::{Error, Result};
+pub use crate::traits::{HttpClient, XrpcClient};
+pub use crate::types::{InputDataOrBytes, OutputDataOrBytes, XrpcRequest};
 
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::error::{XrpcError, XrpcErrorKind};
+    use crate::{HttpClient, XrpcClient};
+    use async_trait::async_trait;
+    use http::{Request, Response};
     #[cfg(target_arch = "wasm32")]
     use wasm_bindgen_test::*;
 
@@ -144,7 +29,10 @@ mod tests {
         async fn send_http(
             &self,
             _request: Request<Vec<u8>>,
-        ) -> Result<Response<Vec<u8>>, Box<dyn std::error::Error + Send + Sync + 'static>> {
+        ) -> core::result::Result<
+            Response<Vec<u8>>,
+            Box<dyn std::error::Error + Send + Sync + 'static>,
+        > {
             let mut builder = Response::builder().status(self.status);
             if self.json {
                 builder = builder.header(http::header::CONTENT_TYPE, "application/json")
@@ -162,7 +50,7 @@ mod tests {
     mod errors {
         use super::*;
 
-        async fn get_example<T>(xrpc: &T, params: Parameters) -> Result<Output, crate::Error<Error>>
+        async fn get_example<T>(xrpc: &T, params: Parameters) -> Result<Output, Error>
         where
             T: crate::XrpcClient + Send + Sync,
         {
@@ -305,10 +193,7 @@ mod tests {
         mod bytes {
             use super::*;
 
-            async fn get_bytes<T>(
-                xrpc: &T,
-                params: Parameters,
-            ) -> Result<Vec<u8>, crate::Error<Error>>
+            async fn get_bytes<T>(xrpc: &T, params: Parameters) -> Result<Vec<u8>, Error>
             where
                 T: crate::XrpcClient + Send + Sync,
             {
@@ -387,7 +272,7 @@ mod tests {
         mod no_content {
             use super::*;
 
-            async fn create_data<T>(xrpc: &T, input: Input) -> Result<(), crate::Error<Error>>
+            async fn create_data<T>(xrpc: &T, input: Input) -> Result<(), Error>
             where
                 T: crate::XrpcClient + Send + Sync,
             {
@@ -449,7 +334,7 @@ mod tests {
         mod bytes {
             use super::*;
 
-            async fn create_data<T>(xrpc: &T, input: Vec<u8>) -> Result<Output, crate::Error<Error>>
+            async fn create_data<T>(xrpc: &T, input: Vec<u8>) -> Result<Output, Error>
             where
                 T: crate::XrpcClient + Send + Sync,
             {
diff --git a/atrium-xrpc/src/traits.rs b/atrium-xrpc/src/traits.rs
new file mode 100644
index 00000000..d8e19589
--- /dev/null
+++ b/atrium-xrpc/src/traits.rs
@@ -0,0 +1,98 @@
+use crate::error::Error;
+use crate::error::{XrpcError, XrpcErrorKind};
+use crate::types::{InputDataOrBytes, OutputDataOrBytes, XrpcRequest};
+use async_trait::async_trait;
+use http::{Method, Request, Response};
+use serde::{de::DeserializeOwned, Serialize};
+
+/// An abstract HTTP client.
+#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
+#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
+pub trait HttpClient {
+    async fn send_http(
+        &self,
+        request: Request<Vec<u8>>,
+    ) -> core::result::Result<Response<Vec<u8>>, Box<dyn std::error::Error + Send + Sync + 'static>>;
+}
+
+type XrpcResult<O, E> = core::result::Result<OutputDataOrBytes<O>, self::Error<E>>;
+
+/// An abstract XRPC client.
+///
+/// [`send_xrpc()`](XrpcClient::send_xrpc) method has a default implementation,
+/// which wraps the [`HttpClient::send_http()`]` method to handle input and output as an XRPC Request.
+#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
+#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
+pub trait XrpcClient: HttpClient {
+    fn base_uri(&self) -> String;
+    #[allow(unused_variables)]
+    async fn auth(&self, is_refresh: bool) -> Option<String> {
+        None
+    }
+    async fn headers(&self) -> Vec<(String, String)> {
+        Vec::new()
+    }
+    async fn send_xrpc<P, I, O, E>(&self, request: &XrpcRequest<P, I>) -> XrpcResult<O, E>
+    where
+        P: Serialize + Send + Sync,
+        I: Serialize + Send + Sync,
+        O: DeserializeOwned + Send + Sync,
+        E: DeserializeOwned + Send + Sync,
+    {
+        let mut uri = format!("{}/xrpc/{}", self.base_uri(), request.path);
+        if let Some(p) = &request.parameters {
+            serde_html_form::to_string(p).map(|qs| {
+                uri += "?";
+                uri += &qs;
+            })?;
+        };
+        let mut builder = Request::builder().method(&request.method).uri(&uri);
+        if let Some(encoding) = &request.encoding {
+            builder = builder.header(http::header::CONTENT_TYPE, encoding);
+        }
+        if let Some(token) = self
+            .auth(
+                request.method == Method::POST
+                    && request.path == "com.atproto.server.refreshSession",
+            )
+            .await
+        {
+            builder = builder.header(http::header::AUTHORIZATION, format!("Bearer {}", token));
+        }
+        for (key, value) in self.headers().await {
+            builder = builder.header(key, value);
+        }
+        let body = if let Some(input) = &request.input {
+            match input {
+                InputDataOrBytes::Data(data) => serde_json::to_vec(&data)?,
+                InputDataOrBytes::Bytes(bytes) => bytes.clone(),
+            }
+        } else {
+            Vec::new()
+        };
+        let (parts, body) = self
+            .send_http(builder.body(body)?)
+            .await
+            .map_err(Error::HttpClient)?
+            .into_parts();
+        if parts.status.is_success() {
+            if parts
+                .headers
+                .get(http::header::CONTENT_TYPE)
+                .and_then(|value| value.to_str().ok())
+                .map_or(false, |content_type| {
+                    content_type.starts_with("application/json")
+                })
+            {
+                Ok(OutputDataOrBytes::Data(serde_json::from_slice(&body)?))
+            } else {
+                Ok(OutputDataOrBytes::Bytes(body))
+            }
+        } else {
+            Err(Error::XrpcResponse(XrpcError {
+                status: parts.status,
+                error: serde_json::from_slice::<XrpcErrorKind<E>>(&body).ok(),
+            }))
+        }
+    }
+}
diff --git a/atrium-xrpc/src/types.rs b/atrium-xrpc/src/types.rs
new file mode 100644
index 00000000..f9a95945
--- /dev/null
+++ b/atrium-xrpc/src/types.rs
@@ -0,0 +1,36 @@
+use http::Method;
+use serde::{de::DeserializeOwned, Serialize};
+
+/// A type which can be used as a parameter of [`XrpcRequest`].
+///
+/// JSON serializable data or raw bytes.
+pub enum InputDataOrBytes<T>
+where
+    T: Serialize,
+{
+    Data(T),
+    Bytes(Vec<u8>),
+}
+
+/// A type which can be used as a return value of [`XrpcClient::send_xrpc()`](crate::XrpcClient::send_xrpc).
+///
+/// JSON deserializable data or raw bytes.
+pub enum OutputDataOrBytes<T>
+where
+    T: DeserializeOwned,
+{
+    Data(T),
+    Bytes(Vec<u8>),
+}
+
+/// A request which can be executed with [`XrpcClient::send_xrpc()`](crate::XrpcClient::send_xrpc).
+pub struct XrpcRequest<P, I>
+where
+    I: Serialize,
+{
+    pub method: Method,
+    pub path: String,
+    pub parameters: Option<P>,
+    pub input: Option<InputDataOrBytes<I>>,
+    pub encoding: Option<String>,
+}