From 4ec85e12c6be3c79a97e798ddc61639c9a9e2acd Mon Sep 17 00:00:00 2001
From: John Howard <john.howard@solo.io>
Date: Mon, 29 Jun 2026 09:07:53 -0700
Subject: [PATCH] feat!: add server/discover model types

Add the SEP-2575 server/discover request and result model.

Wire it into the JSON-RPC request/result unions and cover basic serde routing.

BREAKING CHANGE: Adds variants to public ClientRequest and ServerResult enums.

Fixes #869
---
 crates/rmcp/tests/test_deserialization.rs | 51 ++++++++++++++++++++++-
 1 file changed, 50 insertions(+), 1 deletion(-)

diff --git a/crates/rmcp/tests/test_deserialization.rs b/crates/rmcp/tests/test_deserialization.rs
index 58e9a58a..df60cb83 100644
--- a/crates/rmcp/tests/test_deserialization.rs
+++ b/crates/rmcp/tests/test_deserialization.rs
@@ -1,4 +1,53 @@
-use rmcp::model::{JsonRpcResponse, ServerJsonRpcMessage, ServerResult};
+use rmcp::model::{
+    ClientJsonRpcMessage, ClientRequest, JsonRpcResponse, ServerJsonRpcMessage, ServerResult,
+};
+use serde_json::json;
+
+#[test]
+fn test_discover_request() {
+    let message: ClientJsonRpcMessage = serde_json::from_value(json!({
+        "jsonrpc": "2.0",
+        "id": 1,
+        "method": "server/discover",
+        "params": {}
+    }))
+    .unwrap();
+
+    assert!(matches!(
+        message,
+        ClientJsonRpcMessage::Request(r)
+            if matches!(r.request, ClientRequest::DiscoverRequest(_))
+    ));
+}
+
+#[test]
+fn test_discover_result() {
+    let message: ServerJsonRpcMessage = serde_json::from_value(json!({
+        "jsonrpc": "2.0",
+        "id": 1,
+        "result": {
+            "resultType": "complete",
+            "supportedVersions": ["2026-07-28", "2025-11-25"],
+            "capabilities": {},
+            "serverInfo": {
+                "name": "test-server",
+                "version": "1.0.0"
+            },
+            "ttlMs": 0,
+            "cacheScope": "private"
+        }
+    }))
+    .unwrap();
+
+    assert!(matches!(
+        message,
+        ServerJsonRpcMessage::Response(JsonRpcResponse {
+            result: ServerResult::DiscoverResult(_),
+            ..
+        })
+    ));
+}
+
 #[test]
 fn test_tool_list_result() {
     let json = std::fs::read("tests/test_deserialization/tool_list_result.json").unwrap();