diff --git a/docs/openapi/monitoring-api.json b/docs/openapi/monitoring-api.json
index ccd3413..d25734a 100644
--- a/docs/openapi/monitoring-api.json
+++ b/docs/openapi/monitoring-api.json
@@ -24474,14 +24474,12 @@
             ]
           },
           "timing": {
-            "type": "object",
-            "additionalProperties": {
-              "type": "object",
-              "description": "Request phase timing breakdown",
-              "nullable": true
-            },
-            "description": "Request phase timing breakdown",
-            "nullable": true
+            "nullable": true,
+            "allOf": [
+              {
+                "$ref": "#/components/schemas/TimingPhasesDto"
+              }
+            ]
           },
           "bodyTruncated": {
             "type": "boolean",
@@ -31653,6 +31651,54 @@
         },
         "description": "Event type to use for a test webhook delivery"
       },
+      "TimingPhasesDto": {
+        "type": "object",
+        "properties": {
+          "dns_ms": {
+            "type": "integer",
+            "description": "DNS resolution time in milliseconds",
+            "format": "int32",
+            "nullable": true,
+            "example": 12
+          },
+          "tcp_ms": {
+            "type": "integer",
+            "description": "TCP connect time in milliseconds",
+            "format": "int32",
+            "nullable": true,
+            "example": 18
+          },
+          "tls_ms": {
+            "type": "integer",
+            "description": "TLS handshake time in milliseconds (null for plain HTTP)",
+            "format": "int32",
+            "nullable": true,
+            "example": 34
+          },
+          "ttfb_ms": {
+            "type": "integer",
+            "description": "Time to first response byte in milliseconds",
+            "format": "int32",
+            "nullable": true,
+            "example": 42
+          },
+          "download_ms": {
+            "type": "integer",
+            "description": "Response body download time in milliseconds",
+            "format": "int32",
+            "nullable": true,
+            "example": 8
+          },
+          "total_ms": {
+            "type": "integer",
+            "description": "Total wall-clock request time in milliseconds",
+            "format": "int32",
+            "nullable": true,
+            "example": 114
+          }
+        },
+        "description": "Per-phase HTTP request timing breakdown (milliseconds)"
+      },
       "TlsInfoDto": {
         "type": "object",
         "properties": {
diff --git a/src/devhelm/_generated.py b/src/devhelm/_generated.py
index 0495bf8..6f5bd77 100644
--- a/src/devhelm/_generated.py
+++ b/src/devhelm/_generated.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  .openapi-preprocessed.json
-#   timestamp: 2026-04-23T14:44:11+00:00
+#   timestamp: 2026-04-23T17:38:04+00:00
 
 from __future__ import annotations
 from typing import Annotated, Any, Literal
@@ -2006,22 +2006,6 @@ class CheckType1(StrEnum):
     http = "http"
 
 
-class Http(BaseModel):
-    model_config = ConfigDict(extra="forbid")
-    check_type: Literal["http"]
-    timing: Annotated[
-        dict[str, dict[str, Any]] | None,
-        Field(description="Request phase timing breakdown"),
-    ] = None
-    body_truncated: Annotated[
-        bool | None,
-        Field(
-            alias="bodyTruncated",
-            description="Whether the response body was truncated before storage",
-        ),
-    ] = None
-
-
 class Method(StrEnum):
     get = "GET"
     post = "POST"
@@ -5231,6 +5215,38 @@ class TestWebhookEndpointRequest(BaseModel):
     ] = None
 
 
+class TimingPhasesDto(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+    dns_ms: Annotated[
+        int | None,
+        Field(description="DNS resolution time in milliseconds", examples=[12]),
+    ] = None
+    tcp_ms: Annotated[
+        int | None, Field(description="TCP connect time in milliseconds", examples=[18])
+    ] = None
+    tls_ms: Annotated[
+        int | None,
+        Field(
+            description="TLS handshake time in milliseconds (null for plain HTTP)",
+            examples=[34],
+        ),
+    ] = None
+    ttfb_ms: Annotated[
+        int | None,
+        Field(description="Time to first response byte in milliseconds", examples=[42]),
+    ] = None
+    download_ms: Annotated[
+        int | None,
+        Field(description="Response body download time in milliseconds", examples=[8]),
+    ] = None
+    total_ms: Annotated[
+        int | None,
+        Field(
+            description="Total wall-clock request time in milliseconds", examples=[114]
+        ),
+    ] = None
+
+
 class TlsInfoDto(BaseModel):
     model_config = ConfigDict(extra="forbid")
     subject_cn: Annotated[
@@ -6181,16 +6197,6 @@ class BulkMonitorActionResult(BaseModel):
     ]
 
 
-class CheckTypeDetailsDto(RootModel[Http | Tcp | Icmp | Dns | McpServer]):
-    root: Annotated[
-        Http | Tcp | Icmp | Dns | McpServer,
-        Field(
-            description="Check-type-specific details — polymorphic by check_type discriminator",
-            discriminator="check_type",
-        ),
-    ]
-
-
 class ComponentUptimeDayDto(BaseModel):
     model_config = ConfigDict(extra="forbid")
     date: Annotated[
@@ -6636,6 +6642,19 @@ class GlobalStatusSummaryDto(BaseModel):
     ]
 
 
+class Http(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+    check_type: Literal["http"]
+    timing: TimingPhasesDto | None = None
+    body_truncated: Annotated[
+        bool | None,
+        Field(
+            alias="bodyTruncated",
+            description="Whether the response body was truncated before storage",
+        ),
+    ] = None
+
+
 class IncidentDetailDto(BaseModel):
     model_config = ConfigDict(extra="forbid")
     incident: IncidentDto
@@ -7514,6 +7533,55 @@ class BatchComponentUptimeDto(BaseModel):
     ]
 
 
+class CheckTypeDetailsDto(RootModel[Http | Tcp | Icmp | Dns | McpServer]):
+    root: Annotated[
+        Http | Tcp | Icmp | Dns | McpServer,
+        Field(
+            description="Check-type-specific details — polymorphic by check_type discriminator",
+            discriminator="check_type",
+        ),
+    ]
+
+
+class CreateNotificationPolicyRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+    name: Annotated[
+        str,
+        Field(
+            description="Human-readable name for this policy",
+            max_length=255,
+            min_length=0,
+        ),
+    ]
+    match_rules: Annotated[
+        list[MatchRule] | None,
+        Field(
+            alias="matchRules",
+            description="Match rules to evaluate (all must pass; omit or empty for catch-all)",
+        ),
+    ] = None
+    escalation: EscalationChain
+    enabled: Annotated[
+        bool | None, Field(description="Whether this policy is enabled (default true)")
+    ] = True
+    priority: Annotated[
+        int | None,
+        Field(
+            description="Evaluation priority; higher value = evaluated first (default 0)"
+        ),
+    ] = 0
+
+
+class SingleValueResponseBatchComponentUptimeDto(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+    data: BatchComponentUptimeDto
+
+
+class SingleValueResponseStatusPageIncidentDto(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+    data: StatusPageIncidentDto
+
+
 class CheckResultDetailsDto(BaseModel):
     model_config = ConfigDict(extra="forbid")
     status_code: Annotated[
@@ -7613,35 +7681,6 @@ class CheckResultDto(BaseModel):
     ] = None
 
 
-class CreateNotificationPolicyRequest(BaseModel):
-    model_config = ConfigDict(extra="forbid")
-    name: Annotated[
-        str,
-        Field(
-            description="Human-readable name for this policy",
-            max_length=255,
-            min_length=0,
-        ),
-    ]
-    match_rules: Annotated[
-        list[MatchRule] | None,
-        Field(
-            alias="matchRules",
-            description="Match rules to evaluate (all must pass; omit or empty for catch-all)",
-        ),
-    ] = None
-    escalation: EscalationChain
-    enabled: Annotated[
-        bool | None, Field(description="Whether this policy is enabled (default true)")
-    ] = True
-    priority: Annotated[
-        int | None,
-        Field(
-            description="Evaluation priority; higher value = evaluated first (default 0)"
-        ),
-    ] = 0
-
-
 class CursorPageCheckResultDto(BaseModel):
     model_config = ConfigDict(extra="forbid")
     data: Annotated[list[CheckResultDto], Field(description="Items on this page")]
@@ -7658,13 +7697,3 @@ class CursorPageCheckResultDto(BaseModel):
             alias="hasMore", description="Whether more results exist beyond this page"
         ),
     ]
-
-
-class SingleValueResponseBatchComponentUptimeDto(BaseModel):
-    model_config = ConfigDict(extra="forbid")
-    data: BatchComponentUptimeDto
-
-
-class SingleValueResponseStatusPageIncidentDto(BaseModel):
-    model_config = ConfigDict(extra="forbid")
-    data: StatusPageIncidentDto