diff --git a/pkg/parser/schemas/main_workflow_schema.json b/pkg/parser/schemas/main_workflow_schema.json
index 9aafd0d3ea..ef385f0b2f 100644
--- a/pkg/parser/schemas/main_workflow_schema.json
+++ b/pkg/parser/schemas/main_workflow_schema.json
@@ -3469,6 +3469,36 @@
                   "type": "string"
                 },
                 "description": "Arguments passed to container entrypoint"
+              },
+              "registry": {
+                "type": "string",
+                "description": "URI to installation location from MCP registry",
+                "examples": ["https://api.mcp.github.com/v0/servers/microsoft/markitdown", "https://registry.npmjs.org/@my/tool"]
+              },
+              "allowed": {
+                "type": "array",
+                "items": {
+                  "type": "string"
+                },
+                "description": "List of allowed tool names (restricts which tools from the MCP server can be used)",
+                "examples": [
+                  ["create-issue", "add-comment"],
+                  ["read-file", "write-file"]
+                ]
+              },
+              "entrypoint": {
+                "type": "string",
+                "description": "Container entrypoint override (used with container field)",
+                "examples": ["/bin/sh", "node"]
+              },
+              "mounts": {
+                "type": "array",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[^:]+:[^:]+:(ro|rw)$"
+                },
+                "description": "Volume mounts for container in format 'source:dest:mode' where mode is 'ro' or 'rw'",
+                "examples": [["/tmp/data:/data:ro"], ["/workspace:/workspace:rw", "/config:/config:ro"]]
               }
             },
             "additionalProperties": true
@@ -6343,6 +6373,11 @@
           },
           "description": "Arguments for command or container execution"
         },
+        "entrypoint": {
+          "type": "string",
+          "description": "Container entrypoint override (used with container field)",
+          "examples": ["/bin/sh", "node"]
+        },
         "entrypointArgs": {
           "type": "array",
           "items": {
@@ -6350,6 +6385,15 @@
           },
           "description": "Arguments to add after the container image (container entrypoint arguments)"
         },
+        "mounts": {
+          "type": "array",
+          "items": {
+            "type": "string",
+            "pattern": "^[^:]+:[^:]+:(ro|rw)$"
+          },
+          "description": "Volume mounts for container in format 'source:dest:mode' where mode is 'ro' or 'rw'",
+          "examples": [["/tmp/data:/data:ro"], ["/workspace:/workspace:rw", "/config:/config:ro"]]
+        },
         "env": {
           "type": "object",
           "patternProperties": {