From 2fd72ab150c3afde2e65edc9ca7f2d491ba656ec Mon Sep 17 00:00:00 2001
From: lewis <lu5a@proton.me>
Date: Tue, 6 Jan 2026 23:33:13 +0200
Subject: [PATCH] Send user agent as tranquil

---
 src/lib.rs          | 2 +-
 src/oauth/client.rs | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index c5ca9b7..056eaab 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -504,7 +504,7 @@ pub fn app(state: AppState) -> Router {
         )
         .fallback(async || (
             StatusCode::NOT_IMPLEMENTED,
-            Json(json!({"error": "MethodNotImplemented", "message": "XRPC method not implemented"})),
+            Json(json!({"error": "MethodNotImplemented", "message": "Method not implemented. For app.bsky.* methods, include an atproto-proxy header specifying your AppView."})),
         ));
     let xrpc_service = ServiceBuilder::new()
         .layer(XrpcProxyLayer::new(state.clone()))
diff --git a/src/oauth/client.rs b/src/oauth/client.rs
index 1f0cf26..4666f4b 100644
--- a/src/oauth/client.rs
+++ b/src/oauth/client.rs
@@ -82,6 +82,7 @@ impl ClientMetadataCache {
                 .connect_timeout(std::time::Duration::from_secs(10))
                 .pool_max_idle_per_host(10)
                 .pool_idle_timeout(std::time::Duration::from_secs(90))
+                .user_agent("Tranquil-PDS/1.0 (ATProto; +https://tangled.org/lewis.moe/bspds-sandbox)")
                 .build()
                 .unwrap_or_else(|_| Client::new()),
             cache_ttl_secs,
@@ -256,9 +257,11 @@ impl ClientMetadataCache {
             .send()
             .await
             .map_err(|e| {
+                tracing::warn!(client_id = %client_id, error = %e, "Failed to fetch client metadata");
                 OAuthError::InvalidClient(format!("Failed to fetch client metadata: {}", e))
             })?;
         if !response.status().is_success() {
+            tracing::warn!(client_id = %client_id, status = %response.status(), "Failed to fetch client metadata");
             return Err(OAuthError::InvalidClient(format!(
                 "Failed to fetch client metadata: HTTP {}",
                 response.status()