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Meridian Dispatch

by com.meridiandispatch
OverviewDiscussionsAdmin

Make a new plan

create_plan

Make a new plan in the traveller's Meridian Dispatch app: a title, a first day and a number of days, optionally with ops to fill it (the same ops as edit_plan). It appears on the website at once and in the app on its next sync. A free account holds one plan; members have as many as they like. Read get_travel_preferences before filling it, so the hotels, pace and routing fit how this traveller travels. Needs sign-in.

Input Schema

NameRequiredDescriptionDefault
opsNoOptional: the same ops as edit_plan, applied at once.
daysYesHow many days.
titleYes
start_dateYesThe first day, YYYY-MM-DD.
country_codesNoISO alpha-2 codes, the main country first.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed5 schema fields changed
    • changedInput schema / properties / ops / description
      Previous value: -"Optional edits to apply at once; see edit_plan."New value: +"Optional: the same ops as edit_plan, applied at once."
    • removedInput schema / properties / ops / items / anyOf
      Removed value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "op": {
-        "const": "set_title"
-      },
-      "title": {
-        "maxLength": 200,
-        "minLength": 1,
-        "type": "string"
-      }
-    },
-    "required": [
-      "op",
-      "title"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "op": {
-        "const": "set_start_date"
-      },
-      "startDate": {
-        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-        "type": "string"
-      }
-    },
-    "required": [
-      "op",
-      "startDate"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "date": {
-        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-        "type": "string"
-      },
-      "op": {
-        "const": "add_day"
-      }
-    },
-    "required": [
-      "op",
-      "date"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "date": {
-        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-        "type": "string"
-      },
-      "op": {
-        "const": "remove_day"
-      }
-    },
-    "required": [
-      "op",
-      "date"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "date": {
-        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-        "type": "string"
-      },
-      "op": {
-        "const": "set_day"
-      },
-      "summary": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "town": {
-        "type": [
-          "string",
-          "null"
-        ]
-      }
-    },
-    "required": [
-      "op",
-      "date"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "date": {
-        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-        "type": "string"
-      },
-      "op": {
-        "const": "add_stop"
-      },
-      "position": {
-        "minimum": 0,
-        "type": "integer"
-      },
-      "stop": {
-        "properties": {
-          "category": {
-            "maxLength": 60,
-            "type": "string"
-          },
-          "meridian_url": {
-            "description": "The url of a Meridian Dispatch place (from get_place, get_destination or search_guides). Sets the title and town from the guide, so the stop lands on the map.",
-            "type": "string"
-          },
-          "minutes": {
-            "maximum": 1440,
-            "minimum": 1,
-            "type": "integer"
-          },
-          "note": {
-            "maxLength": 2000,
-            "type": "string"
-          },
-          "prose": {
-            "maxLength": 2000,
-            "type": "string"
-          },
-          "ticketsURL": {
-            "format": "uri",
-            "type": "string"
-          },
-          "time": {
-            "description": "HH:mm, 24-hour.",
-            "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
-            "type": "string"
-          },
-          "title": {
-            "maxLength": 200,
-            "type": "string"
-          },
-          "town": {
-            "maxLength": 100,
-            "type": "string"
-          },
-          "type": {
-            "description": "freeform for a transfer or a note.",
-            "enum": [
-              "activity",
-              "restaurant",
-              "freeform"
-            ],
-            "type": "string"
-          }
-        },
-        "type": "object"
-      }
-    },
-    "required": [
-      "op",
-      "date",
-      "stop"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "fields": {
-        "description": "null on a field clears it.",
-        "properties": {
-          "category": {
-            "maxLength": 60,
-            "type": "string"
-          },
-          "meridian_url": {
-            "description": "The url of a Meridian Dispatch place (from get_place, get_destination or search_guides). Sets the title and town from the guide, so the stop lands on the map.",
-            "type": "string"
-          },
-          "minutes": {
-            "maximum": 1440,
-            "minimum": 1,
-            "type": "integer"
-          },
-          "note": {
-            "maxLength": 2000,
-            "type": "string"
-          },
-          "prose": {
-            "maxLength": 2000,
-            "type": "string"
-          },
-          "ticketsURL": {
-            "format": "uri",
-            "type": "string"
-          },
-          "time": {
-            "description": "HH:mm, 24-hour.",
-            "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
-            "type": "string"
-          },
-          "title": {
-            "maxLength": 200,
-            "type": "string"
-          },
-          "town": {
-            "maxLength": 100,
-            "type": "string"
-          },
-          "type": {
-            "description": "freeform for a transfer or a note.",
-            "enum": [
-              "activity",
-              "restaurant",
-              "freeform"
-            ],
-            "type": "string"
-          }
-        },
-        "type": "object"
-      },
-      "id": {
-        "description": "A stop or booking id from get_plan.",
-        "type": "string"
-      },
-      "op": {
-        "const": "update_stop"
-      }
-    },
-    "required": [
-      "op",
-      "id",
-      "fields"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "date": {
-        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-        "type": "string"
-      },
-      "id": {
-        "description": "A stop or booking id from get_plan.",
-        "type": "string"
-      },
-      "op": {
-        "const": "move_stop"
-      },
-      "position": {
-        "minimum": 0,
-        "type": "integer"
-      }
-    },
-    "required": [
-      "op",
-      "id",
-      "date"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "id": {
-        "description": "A stop or booking id from get_plan.",
-        "type": "string"
-      },
-      "op": {
-        "const": "remove_stop"
-      }
-    },
-    "required": [
-      "op",
-      "id"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "booking": {
-        "properties": {
-          "booked": {
-            "type": "boolean"
-          },
-          "city": {
-            "maxLength": 100,
-            "type": "string"
-          },
-          "countryCode": {
-            "pattern": "^[A-Za-z]{2}$",
-            "type": "string"
-          },
-          "details": {
-            "additionalProperties": {
-              "type": "string"
-            },
-            "type": "object"
-          },
-          "endDate": {
-            "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-            "type": "string"
-          },
-          "endTime": {
-            "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
-            "type": "string"
-          },
-          "startDate": {
-            "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-            "type": "string"
-          },
-          "startTime": {
-            "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
-            "type": "string"
-          },
-          "subtitle": {
-            "maxLength": 200,
-            "type": "string"
-          },
-          "title": {
-            "maxLength": 200,
-            "type": "string"
-          },
-          "type": {
-            "enum": [
-              "hotel",
-              "flight",
-              "train",
-              "carRental",
-              "restaurant",
-              "activity",
-              "other"
-            ],
-            "type": "string"
-          }
-        },
-        "required": [
-          "type",
-          "title"
-        ],
-        "type": "object"
-      },
-      "op": {
-        "const": "add_booking"
-      }
-    },
-    "required": [
-      "op",
-      "booking"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "fields": {
-        "properties": {
-          "booked": {
-            "type": "boolean"
-          },
-          "city": {
-            "maxLength": 100,
-            "type": "string"
-          },
-          "countryCode": {
-            "pattern": "^[A-Za-z]{2}$",
-            "type": "string"
-          },
-          "details": {
-            "additionalProperties": {
-              "type": "string"
-            },
-            "type": "object"
-          },
-          "endDate": {
-            "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-            "type": "string"
-          },
-          "endTime": {
-            "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
-            "type": "string"
-          },
-          "startDate": {
-            "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-            "type": "string"
-          },
-          "startTime": {
-            "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
-            "type": "string"
-          },
-          "subtitle": {
-            "maxLength": 200,
-            "type": "string"
-          },
-          "title": {
-            "maxLength": 200,
-            "type": "string"
-          },
-          "type": {
-            "enum": [
-              "hotel",
-              "flight",
-              "train",
-              "carRental",
-              "restaurant",
-              "activity",
-              "other"
-            ],
-            "type": "string"
-          }
-        },
-        "type": "object"
-      },
-      "id": {
-        "description": "A stop or booking id from get_plan.",
-        "type": "string"
-      },
-      "op": {
-        "const": "update_booking"
-      }
-    },
-    "required": [
-      "op",
-      "id",
-      "fields"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "id": {
-        "description": "A stop or booking id from get_plan.",
-        "type": "string"
-      },
-      "op": {
-        "const": "remove_booking"
-      }
-    },
-    "required": [
-      "op",
-      "id"
-    ],
-    "type": "object"
-  }
-]
    • addedInput schema / properties / ops / items / properties
      Added value: +{
+  "op": {
+    "type": "string"
+  }
+}
    • addedInput schema / properties / ops / items / required
      Added value: +[
+  "op"
+]
    • addedInput schema / properties / ops / items / type
      Added value: +"object"
  2. Changed2 schema fields changed
    • addedInput schema / properties / ops / items
      Added value: +{
+  "anyOf": [
+    {
+      "additionalProperties": false,
+      "properties": {
+        "op": {
+          "const": "set_title"
+        },
+        "title": {
+          "maxLength": 200,
+          "minLength": 1,
+          "type": "string"
+        }
+      },
+      "required": [
+        "op",
+        "title"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "op": {
+          "const": "set_start_date"
+        },
+        "startDate": {
+          "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+          "type": "string"
+        }
+      },
+      "required": [
+        "op",
+        "startDate"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "date": {
+          "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+          "type": "string"
+        },
+        "op": {
+          "const": "add_day"
+        }
+      },
+      "required": [
+        "op",
+        "date"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "date": {
+          "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+          "type": "string"
+        },
+        "op": {
+          "const": "remove_day"
+        }
+      },
+      "required": [
+        "op",
+        "date"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "date": {
+          "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+          "type": "string"
+        },
+        "op": {
+          "const": "set_day"
+        },
+        "summary": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "town": {
+          "type": [
+            "string",
+            "null"
+          ]
+        }
+      },
+      "required": [
+        "op",
+        "date"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "date": {
+          "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+          "type": "string"
+        },
+        "op": {
+          "const": "add_stop"
+        },
+        "position": {
+          "minimum": 0,
+          "type": "integer"
+        },
+        "stop": {
+          "properties": {
+            "category": {
+              "maxLength": 60,
+              "type": "string"
+            },
+            "meridian_url": {
+              "description": "The url of a Meridian Dispatch place (from get_place, get_destination or search_guides). Sets the title and town from the guide, so the stop lands on the map.",
+              "type": "string"
+            },
+            "minutes": {
+              "maximum": 1440,
+              "minimum": 1,
+              "type": "integer"
+            },
+            "note": {
+              "maxLength": 2000,
+              "type": "string"
+            },
+            "prose": {
+              "maxLength": 2000,
+              "type": "string"
+            },
+            "ticketsURL": {
+              "format": "uri",
+              "type": "string"
+            },
+            "time": {
+              "description": "HH:mm, 24-hour.",
+              "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
+              "type": "string"
+            },
+            "title": {
+              "maxLength": 200,
+              "type": "string"
+            },
+            "town": {
+              "maxLength": 100,
+              "type": "string"
+            },
+            "type": {
+              "description": "freeform for a transfer or a note.",
+              "enum": [
+                "activity",
+                "restaurant",
+                "freeform"
+              ],
+              "type": "string"
+            }
+          },
+          "type": "object"
+        }
+      },
+      "required": [
+        "op",
+        "date",
+        "stop"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "fields": {
+          "description": "null on a field clears it.",
+          "properties": {
+            "category": {
+              "maxLength": 60,
+              "type": "string"
+            },
+            "meridian_url": {
+              "description": "The url of a Meridian Dispatch place (from get_place, get_destination or search_guides). Sets the title and town from the guide, so the stop lands on the map.",
+              "type": "string"
+            },
+            "minutes": {
+              "maximum": 1440,
+              "minimum": 1,
+              "type": "integer"
+            },
+            "note": {
+              "maxLength": 2000,
+              "type": "string"
+            },
+            "prose": {
+              "maxLength": 2000,
+              "type": "string"
+            },
+            "ticketsURL": {
+              "format": "uri",
+              "type": "string"
+            },
+            "time": {
+              "description": "HH:mm, 24-hour.",
+              "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
+              "type": "string"
+            },
+            "title": {
+              "maxLength": 200,
+              "type": "string"
+            },
+            "town": {
+              "maxLength": 100,
+              "type": "string"
+            },
+            "type": {
+              "description": "freeform for a transfer or a note.",
+              "enum": [
+                "activity",
+                "restaurant",
+                "freeform"
+              ],
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "id": {
+          "description": "A stop or booking id from get_plan.",
+          "type": "string"
+        },
+        "op": {
+          "const": "update_stop"
+        }
+      },
+      "required": [
+        "op",
+        "id",
+        "fields"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "date": {
+          "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+          "type": "string"
+        },
+        "id": {
+          "description": "A stop or booking id from get_plan.",
+          "type": "string"
+        },
+        "op": {
+          "const": "move_stop"
+        },
+        "position": {
+          "minimum": 0,
+          "type": "integer"
+        }
+      },
+      "required": [
+        "op",
+        "id",
+        "date"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "id": {
+          "description": "A stop or booking id from get_plan.",
+          "type": "string"
+        },
+        "op": {
+          "const": "remove_stop"
+        }
+      },
+      "required": [
+        "op",
+        "id"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "booking": {
+          "properties": {
+            "booked": {
+              "type": "boolean"
+            },
+            "city": {
+              "maxLength": 100,
+              "type": "string"
+            },
+            "countryCode": {
+              "pattern": "^[A-Za-z]{2}$",
+              "type": "string"
+            },
+            "details": {
+              "additionalProperties": {
+                "type": "string"
+              },
+              "type": "object"
+            },
+            "endDate": {
+              "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+              "type": "string"
+            },
+            "endTime": {
+              "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
+              "type": "string"
+            },
+            "startDate": {
+              "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+              "type": "string"
+            },
+            "startTime": {
+              "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
+              "type": "string"
+            },
+            "subtitle": {
+              "maxLength": 200,
+              "type": "string"
+            },
+            "title": {
+              "maxLength": 200,
+              "type": "string"
+            },
+            "type": {
+              "enum": [
+                "hotel",
+                "flight",
+                "train",
+                "carRental",
+                "restaurant",
+                "activity",
+                "other"
+              ],
+              "type": "string"
+            }
+          },
+          "required": [
+            "type",
+            "title"
+          ],
+          "type": "object"
+        },
+        "op": {
+          "const": "add_booking"
+        }
+      },
+      "required": [
+        "op",
+        "booking"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "fields": {
+          "properties": {
+            "booked": {
+              "type": "boolean"
+            },
+            "city": {
+              "maxLength": 100,
+              "type": "string"
+            },
+            "countryCode": {
+              "pattern": "^[A-Za-z]{2}$",
+              "type": "string"
+            },
+            "details": {
+              "additionalProperties": {
+                "type": "string"
+              },
+              "type": "object"
+            },
+            "endDate": {
+              "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+              "type": "string"
+            },
+            "endTime": {
+              "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
+              "type": "string"
+            },
+            "startDate": {
+              "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+              "type": "string"
+            },
+            "startTime": {
+              "pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
+              "type": "string"
+            },
+            "subtitle": {
+              "maxLength": 200,
+              "type": "string"
+            },
+            "title": {
+              "maxLength": 200,
+              "type": "string"
+            },
+            "type": {
+              "enum": [
+                "hotel",
+                "flight",
+                "train",
+                "carRental",
+                "restaurant",
+                "activity",
+                "other"
+              ],
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "id": {
+          "description": "A stop or booking id from get_plan.",
+          "type": "string"
+        },
+        "op": {
+          "const": "update_booking"
+        }
+      },
+      "required": [
+        "op",
+        "id",
+        "fields"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "id": {
+          "description": "A stop or booking id from get_plan.",
+          "type": "string"
+        },
+        "op": {
+          "const": "remove_booking"
+        }
+      },
+      "required": [
+        "op",
+        "id"
+      ],
+      "type": "object"
+    }
+  ]
+}
    • addedInput schema / properties / ops / maxItems
      Added value: +100
  3. Added

TDQS

A4.4/5.0
Behavior5/5

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

Beyond annotations, it discloses sync behavior (website immediately, app next sync), account quota limits, sign-in requirement, and that ops can be supplied at creation time. These are meaningful operational details for a non-read-only tool.

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

Conciseness5/5

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

The core action and required fields are front-loaded, followed by useful prerequisite, sync, quota, and auth context. Each sentence adds practical value without bloat.

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?

For a create tool with no output schema and rich annotations, the description covers creation inputs, optional ops, sync timing, quotas, and auth. It leaves return-value and failure behavior unstated, but the main invocation context is complete.

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

Parameters3/5

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

Schema description coverage is high at 80%, so the schema already carries most parameter meaning. The description reinforces required fields and explains ops as filling the plan using the same ops as edit_plan, but it does not document country_codes or constraints beyond the schema.

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 and resource: "Make a new plan," and names the required fields (title, first day, number of days) plus optional ops. It also distinguishes creation from edit_plan by calling this a new plan while noting ops are the same as edit_plan.

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?

Clearly frames this as the creation path and gives a concrete prerequisite: read get_travel_preferences before filling the plan. It does not explicitly describe when not to use it or name create_itinerary_link as an alternative, but the create-vs-edit context is clear.

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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