diff --git a/.gitignore b/.gitignore
index 7cf97c0d0..e5e5950ea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -76,6 +76,8 @@ __pypackages__/
 
 # Environments
 .env
+.env.*
+*.crt
 .envrc
 *.crt
 *.key
diff --git a/libs/cli/generate_schema.py b/libs/cli/generate_schema.py
index 750496939..34255473a 100644
--- a/libs/cli/generate_schema.py
+++ b/libs/cli/generate_schema.py
@@ -23,6 +23,8 @@ from langgraph_cli.schemas import (
     GraphDef,
     HttpConfig,
     IndexConfig,
+    McpConfig,
+    McpTasksConfig,
     SecurityConfig,
     SerdeConfig,
     StoreConfig,
@@ -115,6 +117,8 @@ def add_descriptions_to_schema(schema, cls):
                 AuthConfig,
                 SecurityConfig,
                 HttpConfig,
+                McpConfig,
+                McpTasksConfig,
                 CorsConfig,
                 CacheConfig,
                 ThreadTTLConfig,
diff --git a/libs/cli/langgraph_cli/schemas.py b/libs/cli/langgraph_cli/schemas.py
index 5a00fc673..8c6d41d4b 100644
--- a/libs/cli/langgraph_cli/schemas.py
+++ b/libs/cli/langgraph_cli/schemas.py
@@ -439,6 +439,24 @@ class ConfigurableHeaderConfig(TypedDict, total=False):
     """
 
 
+class McpTasksConfig(TypedDict, total=False):
+    """Settings for authenticated MCP elicitation tasks."""
+
+    poll_interval_ms: int
+    """Suggested client polling interval, in milliseconds. Default 1000; range 100–60000."""
+    ttl_minutes: int
+    """Maximum task lifetime, in minutes. Default 1440; range 1–10080."""
+    completed_grace_seconds: int
+    """Result retention after completion, in seconds. Default 300; range 1–86400."""
+    allow_insecure_urls: bool
+    """Allow HTTP elicitation URLs for development. Defaults to False; production URLs require HTTPS."""
+
+
+class McpConfig(TypedDict, total=False):
+    tasks: McpTasksConfig
+    """Polling, retention and URL settings for the MCP Tasks extension."""
+
+
 class HttpConfig(TypedDict, total=False):
     """Configuration for the built-in HTTP server that powers your deployment's routes and endpoints."""
 
@@ -473,6 +491,8 @@ class HttpConfig(TypedDict, total=False):
 
     Default is False.
     """
+    mcp: McpConfig
+    """Optional. Configure the MCP Tasks extension for elicitation over protocol 2026-07-28."""
     disable_a2a: bool
     """Optional. If `True`, /a2a routes are removed, disabling default support to expose the deployment as an agent-to-agent (A2A) server.
 
diff --git a/libs/cli/schemas/schema.json b/libs/cli/schemas/schema.json
index 6eec6205b..692887bcf 100644
--- a/libs/cli/schemas/schema.json
+++ b/libs/cli/schemas/schema.json
@@ -1065,6 +1065,10 @@
           ],
           "description": "Optional. Defines which headers are excluded from logging."
         },
+        "mcp": {
+          "$ref": "#/$defs/McpConfig",
+          "description": "Optional. Configure the MCP Tasks extension for elicitation over protocol 2026-07-28."
+        },
         "middleware_order": {
           "anyOf": [
             {
@@ -1170,6 +1174,42 @@
       },
       "required": []
     },
+    "McpConfig": {
+      "title": "McpConfig",
+      "type": "object",
+      "properties": {
+        "tasks": {
+          "$ref": "#/$defs/McpTasksConfig",
+          "description": "Polling, retention and URL settings for the MCP Tasks extension."
+        }
+      },
+      "required": [],
+      "description": "dict() -> new empty dictionary\ndict(mapping) -> new dictionary initialized from a mapping object's\n    (key, value) pairs\ndict(iterable) -> new dictionary initialized as if via:\n    d = {}\n    for k, v in iterable:\n        d[k] = v\ndict(**kwargs) -> new dictionary initialized with the name=value pairs\n    in the keyword argument list.  For example:  dict(one=1, two=2)"
+    },
+    "McpTasksConfig": {
+      "title": "McpTasksConfig",
+      "description": "Settings for authenticated MCP elicitation tasks.",
+      "type": "object",
+      "properties": {
+        "allow_insecure_urls": {
+          "type": "boolean",
+          "description": "Allow HTTP elicitation URLs for development. Defaults to False; production URLs require HTTPS."
+        },
+        "completed_grace_seconds": {
+          "type": "integer",
+          "description": "Result retention after completion, in seconds. Default 300; range 1\u201386400."
+        },
+        "poll_interval_ms": {
+          "type": "integer",
+          "description": "Suggested client polling interval, in milliseconds. Default 1000; range 100\u201360000."
+        },
+        "ttl_minutes": {
+          "type": "integer",
+          "description": "Maximum task lifetime, in minutes. Default 1440; range 1\u201310080."
+        }
+      },
+      "required": []
+    },
     "UvSource": {
       "title": "UvSource",
       "description": "Deployment source rooted at a uv project or workspace.",
diff --git a/libs/cli/schemas/schema.v0.json b/libs/cli/schemas/schema.v0.json
index 6eec6205b..692887bcf 100644
--- a/libs/cli/schemas/schema.v0.json
+++ b/libs/cli/schemas/schema.v0.json
@@ -1065,6 +1065,10 @@
           ],
           "description": "Optional. Defines which headers are excluded from logging."
         },
+        "mcp": {
+          "$ref": "#/$defs/McpConfig",
+          "description": "Optional. Configure the MCP Tasks extension for elicitation over protocol 2026-07-28."
+        },
         "middleware_order": {
           "anyOf": [
             {
@@ -1170,6 +1174,42 @@
       },
       "required": []
     },
+    "McpConfig": {
+      "title": "McpConfig",
+      "type": "object",
+      "properties": {
+        "tasks": {
+          "$ref": "#/$defs/McpTasksConfig",
+          "description": "Polling, retention and URL settings for the MCP Tasks extension."
+        }
+      },
+      "required": [],
+      "description": "dict() -> new empty dictionary\ndict(mapping) -> new dictionary initialized from a mapping object's\n    (key, value) pairs\ndict(iterable) -> new dictionary initialized as if via:\n    d = {}\n    for k, v in iterable:\n        d[k] = v\ndict(**kwargs) -> new dictionary initialized with the name=value pairs\n    in the keyword argument list.  For example:  dict(one=1, two=2)"
+    },
+    "McpTasksConfig": {
+      "title": "McpTasksConfig",
+      "description": "Settings for authenticated MCP elicitation tasks.",
+      "type": "object",
+      "properties": {
+        "allow_insecure_urls": {
+          "type": "boolean",
+          "description": "Allow HTTP elicitation URLs for development. Defaults to False; production URLs require HTTPS."
+        },
+        "completed_grace_seconds": {
+          "type": "integer",
+          "description": "Result retention after completion, in seconds. Default 300; range 1\u201386400."
+        },
+        "poll_interval_ms": {
+          "type": "integer",
+          "description": "Suggested client polling interval, in milliseconds. Default 1000; range 100\u201360000."
+        },
+        "ttl_minutes": {
+          "type": "integer",
+          "description": "Maximum task lifetime, in minutes. Default 1440; range 1\u201310080."
+        }
+      },
+      "required": []
+    },
     "UvSource": {
       "title": "UvSource",
       "description": "Deployment source rooted at a uv project or workspace.",