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macos-agent-bridge

macos-agent-bridge

by juliusloon
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Local

system_status

Read-onlyIdempotent

Read the host clock’s local date/time, UTC time, IANA timezone, UTC offset, OS, uptime and CPU/memory status for offline system checks without permissions.

Instructions

Read the current local date/time, UTC time, IANA timezone and UTC offset from the host clock, plus OS, uptime and CPU/memory. Use first for today, tonight, tomorrow or an omitted year. Works offline without the native Helper or permissions. [v1.0.0; permissions: none]

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "system_status"
  }
}

Input Schema

NameRequiredDescriptionDefault

No arguments

Output Schema

NameRequiredDescriptionDefault
dataYes
toolYestool name
errorYes
statusYes
versionYessemantic version

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv0.3.0
    • changedOutput schema / allOf
      Previous value: -[
-  {
-    "if": {
-      "properties": {
-        "status": {
-          "const": "ok"
-        }
-      }
-    },
-    "then": {
-      "properties": {
-        "data": {
-          "properties": {
-            "os": {
-              "type": "string"
-            },
-            "physicalMemoryBytes": {
-              "type": "number"
-            },
-            "processorCount": {
-              "type": "number"
-            },
-            "timezone": {
-              "type": "string"
-            },
-            "uptimeSeconds": {
-              "type": "number"
-            }
-          },
-          "required": [
-            "os",
-            "uptimeSeconds",
-            "processorCount",
-            "physicalMemoryBytes",
-            "timezone"
-          ],
-          "type": "object"
-        },
-        "error": {
-          "type": "null"
-        }
-      }
-    }
-  },
-  {
-    "if": {
-      "properties": {
-        "status": {
-          "const": "confirmation_required"
-        }
-      }
-    },
-    "then": {
-      "properties": {
-        "data": {
-          "properties": {
-            "action": {
-              "type": "string"
-            },
-            "approvalId": {
-              "type": "string"
-            },
-            "expiresAt": {
-              "type": "string"
-            },
-            "reviewUrl": {
-              "enum": [
-                "tinycast://extensions/cano/macos-agent-bridge/approvals",
-                "raycast://extensions/cano/macos-agent-bridge/approvals"
-              ]
-            },
-            "reviewUrls": {
-              "properties": {
-                "raycast": {
-                  "const": "raycast://extensions/cano/macos-agent-bridge/approvals"
-                },
-                "tinycast": {
-                  "const": "tinycast://extensions/cano/macos-agent-bridge/approvals"
-                }
-              },
-              "required": [
-                "tinycast",
-                "raycast"
-              ],
-              "type": "object"
-            }
-          },
-          "required": [
-            "approvalId",
-            "expiresAt",
-            "action",
-            "reviewUrl",
-            "reviewUrls"
-          ],
-          "type": "object"
-        },
-        "error": {
-          "type": "null"
-        }
-      }
-    }
-  }
-]New value: +[
+  {
+    "if": {
+      "properties": {
+        "status": {
+          "const": "ok"
+        }
+      }
+    },
+    "then": {
+      "properties": {
+        "data": {
+          "properties": {
+            "currentTime": {
+              "type": "string"
+            },
+            "localDate": {
+              "type": "string"
+            },
+            "localTime": {
+              "type": "string"
+            },
+            "os": {
+              "type": "string"
+            },
+            "physicalMemoryBytes": {
+              "type": "number"
+            },
+            "processorCount": {
+              "type": "number"
+            },
+            "timezone": {
+              "type": "string"
+            },
+            "unixTimeMs": {
+              "type": "number"
+            },
+            "uptimeSeconds": {
+              "type": "number"
+            },
+            "utcOffsetMinutes": {
+              "type": "number"
+            }
+          },
+          "required": [
+            "os",
+            "uptimeSeconds",
+            "processorCount",
+            "physicalMemoryBytes",
+            "timezone",
+            "currentTime",
+            "localTime",
+            "localDate",
+            "utcOffsetMinutes",
+            "unixTimeMs"
+          ],
+          "type": "object"
+        },
+        "error": {
+          "type": "null"
+        }
+      }
+    }
+  },
+  {
+    "if": {
+      "properties": {
+        "status": {
+          "const": "confirmation_required"
+        }
+      }
+    },
+    "then": {
+      "properties": {
+        "data": {
+          "properties": {
+            "action": {
+              "type": "string"
+            },
+            "approvalId": {
+              "type": "string"
+            },
+            "expiresAt": {
+              "type": "string"
+            },
+            "reviewUrl": {
+              "enum": [
+                "tinycast://extensions/cano/macos-agent-bridge/approvals",
+                "raycast://extensions/cano/macos-agent-bridge/approvals"
+              ]
+            },
+            "reviewUrls": {
+              "properties": {
+                "raycast": {
+                  "const": "raycast://extensions/cano/macos-agent-bridge/approvals"
+                },
+                "tinycast": {
+                  "const": "tinycast://extensions/cano/macos-agent-bridge/approvals"
+                }
+              },
+              "required": [
+                "tinycast",
+                "raycast"
+              ],
+              "type": "object"
+            }
+          },
+          "required": [
+            "approvalId",
+            "expiresAt",
+            "action",
+            "reviewUrl",
+            "reviewUrls"
+          ],
+          "type": "object"
+        },
+        "error": {
+          "type": "null"
+        }
+      }
+    }
+  }
+]
  2. First observedv0.2.0

TDQS

A4.3/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Adds genuinely useful traits beyond the annotations: works offline, requires no native Helper and no permissions, and returns real host-clock values rather than cached ones. The "works offline" claim sits slightly awkwardly against openWorldHint=true, but the description itself is not contradicted on safety or mutability, which the annotations already cover.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with the returned resources, then the usage rule, then capability constraints. Slightly redundant between "without ... permissions" and "[permissions: none]", and the version tag is low value, but nothing is wasted at length.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

An output schema exists, so return-value detail is unnecessary, and the zero-parameter schema needs no explanation. Given annotations already declare read-only/idempotent, the description covers the remaining questions (offline capability, permission needs) well; only whether CPU/memory are instantaneous snapshots is left unstated.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool takes no parameters, so the baseline is 4; there is nothing for the description to disambiguate. It correctly implies the caller supplies no arguments.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb (Read) and enumerates the exact resources: host clock date/time, UTC time, IANA timezone, UTC offset, plus OS, uptime and CPU/memory. The scope is narrow and unambiguous enough to separate it from siblings like bridge_diagnostics or network_check.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

"Use first for today, tonight, tomorrow or an omitted year" gives a concrete trigger condition for calling this before calendar/reminder tools that need date resolution. It does not name the alternative tools it should precede, so routing is implied rather than explicit.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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