Align MCP setup with Codex JSON transport

README.md

@@ -119,7 +119,7 @@ Call MCP tools through the JSON-RPC endpoint:
 ```bash
 curl -sS http://127.0.0.1:4100/mcp \
   -H 'Content-Type: application/json' \
-  -H 'Accept: application/json, text/event-stream' \
+  -H 'Accept: application/json' \
   -H 'MCP-Protocol-Version: 2025-06-18' \
   -H "Authorization: Bearer $TOKEN" \
   -d '{"jsonrpc":"2.0","id":"tools","method":"tools/list","params":{}}' | jq

docs/MCP_TOOLS_CONTRACT.md

@@ -36,7 +36,7 @@ Required request headers for authenticated tool calls:
 
 ```text
 Authorization: Bearer <agent-token>
-Accept: application/json, text/event-stream
+Accept: application/json
 MCP-Protocol-Version: 2025-06-18
 ```
 

src/routes/agents.ts

@@ -733,7 +733,7 @@ function buildSetupPacket(session: AgentSessionRecord, publicUrl: string): Recor
       url: endpoint,
       headers: {
         Authorization: `Bearer ${tokenPlaceholder}`,
-        Accept: "application/json, text/event-stream",
+        Accept: "application/json",
         "MCP-Protocol-Version": "2025-06-18",
       },
     },
@@ -741,9 +741,13 @@ function buildSetupPacket(session: AgentSessionRecord, publicUrl: string): Recor
       mcp_servers: {
         nodedc_tasker: {
           url: endpoint,
+          enabled: true,
+          required: false,
+          startup_timeout_sec: 20,
+          tool_timeout_sec: 60,
           headers: {
             Authorization: `Bearer ${tokenPlaceholder}`,
-            Accept: "application/json, text/event-stream",
+            Accept: "application/json",
             "MCP-Protocol-Version": "2025-06-18",
           },
         },

src/scripts/smoke-mcp-e2e.ts

@@ -40,7 +40,7 @@ try {
   const token = await createToken(agentId);
   const headers = {
     Authorization: `Bearer ${token}`,
-    Accept: "application/json, text/event-stream",
+    Accept: "application/json",
     "MCP-Protocol-Version": "2025-06-18",
   };
 

src/scripts/smoke-mcp.ts

@@ -38,7 +38,7 @@ try {
   const token = await createToken(agentId);
   const headers = {
     Authorization: `Bearer ${token}`,
-    Accept: "application/json, text/event-stream",
+    Accept: "application/json",
     "MCP-Protocol-Version": "2025-06-18",
   };