# MCP tool reference

1 callable tools.

Use tools/call at https://mcp.schedulerzero.com/mcp with the exact tool name and arguments below. The /tools/ paths in this view are documentation identifiers, not HTTP endpoints. Request execution is disabled for this reference.

Inputs are shown for personal API keys (bound) and for OAuth/delegated agents. Output schemas describe MCP structuredContent: native objects pass through; arrays, scalars and null use a data wrapper. Text content retains the native JSON result.

[Connect a client](/mcp/connect) · [Authentication and authorization](/authentication) · [Generated auth guide](/auth.md) · [Download tool catalog](/mcp-catalog.json) · [Agent documentation](/llms.txt)

## get_booking_availability

Read the workspace's calendar availability as up to five free slots plus insert-ready reply text.

Use when drafting a reply that should propose meeting times; check `configured` first.

Do not use to book or hold a time — this only reads free slots, and the booking link remains the source of truth.

Scopes: workspace:read

Risk: read; confirmation: none; idempotency: none.

### Input schema (personal API key)

```json
{
  "type": "object",
  "properties": {
    "workspaceId": {
      "type": "string",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
      "format": "uuid"
    },
    "action": {
      "type": "string",
      "enum": [
        "status",
        "list"
      ]
    },
    "timezone": {
      "$ref": "#/$defs/IanaTimeZone"
    },
    "count": {
      "type": "integer",
      "minimum": 1,
      "maximum": 5
    }
  },
  "required": [
    "workspaceId"
  ],
  "patternProperties": {
    "^(?!(?:workspaceId|action|timezone|count)$)[\\s\\S]*$": false
  },
  "additionalProperties": true,
  "propertyNames": {
    "type": "string",
    "enum": [
      "workspaceId",
      "action",
      "timezone",
      "count"
    ]
  },
  "$defs": {
    "IanaTimeZone": {
      "type": "string",
      "minLength": 1,
      "maxLength": 128,
      "pattern": "^(?:UTC|[A-Za-z0-9_+-]+(?:\\/[A-Za-z0-9_+-]+)+)$"
    }
  }
}
```

### Input schema (OAuth / delegated agent)

```json
{
  "type": "object",
  "properties": {
    "workspaceId": {
      "type": "string",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
      "format": "uuid"
    },
    "action": {
      "type": "string",
      "enum": [
        "status",
        "list"
      ]
    },
    "timezone": {
      "$ref": "#/$defs/IanaTimeZone"
    },
    "count": {
      "type": "integer",
      "minimum": 1,
      "maximum": 5
    }
  },
  "required": [
    "workspaceId"
  ],
  "patternProperties": {
    "^(?!(?:workspaceId|action|timezone|count)$)[\\s\\S]*$": false
  },
  "additionalProperties": true,
  "propertyNames": {
    "type": "string",
    "enum": [
      "workspaceId",
      "action",
      "timezone",
      "count"
    ]
  },
  "$defs": {
    "IanaTimeZone": {
      "type": "string",
      "minLength": 1,
      "maxLength": 128,
      "pattern": "^(?:UTC|[A-Za-z0-9_+-]+(?:\\/[A-Za-z0-9_+-]+)+)$"
    }
  }
}
```

### Output schema (structuredContent)

```json
{
  "$defs": {
    "ShortText": {
      "type": "string",
      "minLength": 1,
      "maxLength": 256
    },
    "IanaTimeZone": {
      "type": "string",
      "minLength": 1,
      "maxLength": 128,
      "pattern": "^(?:UTC|[A-Za-z0-9_+-]+(?:\\/[A-Za-z0-9_+-]+)+)$"
    },
    "UtcDateTimeEncoded": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}\\.\\d{3}Z$"
    }
  },
  "type": "object",
  "anyOf": [
    {
      "allOf": [
        {
          "anyOf": [
            {
              "anyOf": [
                {
                  "type": "object",
                  "properties": {
                    "configured": {
                      "type": "boolean",
                      "enum": [
                        false
                      ]
                    }
                  },
                  "required": [
                    "configured"
                  ],
                  "patternProperties": {
                    "^(?!(?:configured)$)[\\s\\S]*$": false
                  },
                  "additionalProperties": true,
                  "propertyNames": {
                    "anyOf": [
                      {
                        "type": "string",
                        "enum": [
                          "configured"
                        ]
                      }
                    ]
                  }
                },
                {
                  "type": "object",
                  "properties": {
                    "configured": {
                      "type": "boolean",
                      "enum": [
                        true
                      ]
                    },
                    "provider": {
                      "type": "string",
                      "enum": [
                        "calendly",
                        "cal_com"
                      ]
                    },
                    "eventTypeName": {
                      "anyOf": [
                        {
                          "$ref": "#/$defs/ShortText"
                        },
                        {
                          "type": "null"
                        }
                      ]
                    }
                  },
                  "required": [
                    "configured",
                    "provider",
                    "eventTypeName"
                  ],
                  "patternProperties": {
                    "^(?!(?:configured|provider|eventTypeName)$)[\\s\\S]*$": false
                  },
                  "additionalProperties": true,
                  "propertyNames": {
                    "type": "string",
                    "enum": [
                      "configured",
                      "provider",
                      "eventTypeName"
                    ]
                  }
                }
              ]
            },
            {
              "type": "object",
              "properties": {
                "provider": {
                  "type": "string",
                  "enum": [
                    "calendly",
                    "cal_com"
                  ]
                },
                "eventTypeName": {
                  "anyOf": [
                    {
                      "$ref": "#/$defs/ShortText"
                    },
                    {
                      "type": "null"
                    }
                  ]
                },
                "timezone": {
                  "$ref": "#/$defs/IanaTimeZone"
                },
                "slots": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "properties": {
                      "startIso": {
                        "$ref": "#/$defs/UtcDateTimeEncoded"
                      },
                      "formatted": {
                        "$ref": "#/$defs/ShortText"
                      }
                    },
                    "required": [
                      "startIso",
                      "formatted"
                    ],
                    "patternProperties": {
                      "^(?!(?:startIso|formatted)$)[\\s\\S]*$": false
                    },
                    "additionalProperties": true,
                    "propertyNames": {
                      "type": "string",
                      "enum": [
                        "startIso",
                        "formatted"
                      ]
                    }
                  },
                  "maxItems": 5
                },
                "formattedText": {
                  "type": "string",
                  "maxLength": 1024
                },
                "freshness": {
                  "type": "object",
                  "properties": {
                    "source": {
                      "type": "string",
                      "enum": [
                        "cache",
                        "provider"
                      ]
                    },
                    "fetchedAt": {
                      "$ref": "#/$defs/UtcDateTimeEncoded"
                    }
                  },
                  "required": [
                    "source",
                    "fetchedAt"
                  ],
                  "patternProperties": {
                    "^(?!(?:source|fetchedAt)$)[\\s\\S]*$": false
                  },
                  "additionalProperties": true,
                  "propertyNames": {
                    "type": "string",
                    "enum": [
                      "source",
                      "fetchedAt"
                    ]
                  }
                }
              },
              "required": [
                "provider",
                "eventTypeName",
                "timezone",
                "slots",
                "formattedText",
                "freshness"
              ],
              "patternProperties": {
                "^(?!(?:provider|eventTypeName|timezone|slots|formattedText|freshness)$)[\\s\\S]*$": false
              },
              "additionalProperties": true,
              "propertyNames": {
                "type": "string",
                "enum": [
                  "provider",
                  "eventTypeName",
                  "timezone",
                  "slots",
                  "formattedText",
                  "freshness"
                ]
              }
            }
          ]
        },
        {
          "type": "object"
        }
      ]
    },
    {
      "type": "object",
      "properties": {
        "data": {
          "allOf": [
            {
              "anyOf": [
                {
                  "anyOf": [
                    {
                      "type": "object",
                      "properties": {
                        "configured": {
                          "type": "boolean",
                          "enum": [
                            false
                          ]
                        }
                      },
                      "required": [
                        "configured"
                      ],
                      "patternProperties": {
                        "^(?!(?:configured)$)[\\s\\S]*$": false
                      },
                      "additionalProperties": true,
                      "propertyNames": {
                        "anyOf": [
                          {
                            "type": "string",
                            "enum": [
                              "configured"
                            ]
                          }
                        ]
                      }
                    },
                    {
                      "type": "object",
                      "properties": {
                        "configured": {
                          "type": "boolean",
                          "enum": [
                            true
                          ]
                        },
                        "provider": {
                          "type": "string",
                          "enum": [
                            "calendly",
                            "cal_com"
                          ]
                        },
                        "eventTypeName": {
                          "anyOf": [
                            {
                              "$ref": "#/$defs/ShortText"
                            },
                            {
                              "type": "null"
                            }
                          ]
                        }
                      },
                      "required": [
                        "configured",
                        "provider",
                        "eventTypeName"
                      ],
                      "patternProperties": {
                        "^(?!(?:configured|provider|eventTypeName)$)[\\s\\S]*$": false
                      },
                      "additionalProperties": true,
                      "propertyNames": {
                        "type": "string",
                        "enum": [
                          "configured",
                          "provider",
                          "eventTypeName"
                        ]
                      }
                    }
                  ]
                },
                {
                  "type": "object",
                  "properties": {
                    "provider": {
                      "type": "string",
                      "enum": [
                        "calendly",
                        "cal_com"
                      ]
                    },
                    "eventTypeName": {
                      "anyOf": [
                        {
                          "$ref": "#/$defs/ShortText"
                        },
                        {
                          "type": "null"
                        }
                      ]
                    },
                    "timezone": {
                      "$ref": "#/$defs/IanaTimeZone"
                    },
                    "slots": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "startIso": {
                            "$ref": "#/$defs/UtcDateTimeEncoded"
                          },
                          "formatted": {
                            "$ref": "#/$defs/ShortText"
                          }
                        },
                        "required": [
                          "startIso",
                          "formatted"
                        ],
                        "patternProperties": {
                          "^(?!(?:startIso|formatted)$)[\\s\\S]*$": false
                        },
                        "additionalProperties": true,
                        "propertyNames": {
                          "type": "string",
                          "enum": [
                            "startIso",
                            "formatted"
                          ]
                        }
                      },
                      "maxItems": 5
                    },
                    "formattedText": {
                      "type": "string",
                      "maxLength": 1024
                    },
                    "freshness": {
                      "type": "object",
                      "properties": {
                        "source": {
                          "type": "string",
                          "enum": [
                            "cache",
                            "provider"
                          ]
                        },
                        "fetchedAt": {
                          "$ref": "#/$defs/UtcDateTimeEncoded"
                        }
                      },
                      "required": [
                        "source",
                        "fetchedAt"
                      ],
                      "patternProperties": {
                        "^(?!(?:source|fetchedAt)$)[\\s\\S]*$": false
                      },
                      "additionalProperties": true,
                      "propertyNames": {
                        "type": "string",
                        "enum": [
                          "source",
                          "fetchedAt"
                        ]
                      }
                    }
                  },
                  "required": [
                    "provider",
                    "eventTypeName",
                    "timezone",
                    "slots",
                    "formattedText",
                    "freshness"
                  ],
                  "patternProperties": {
                    "^(?!(?:provider|eventTypeName|timezone|slots|formattedText|freshness)$)[\\s\\S]*$": false
                  },
                  "additionalProperties": true,
                  "propertyNames": {
                    "type": "string",
                    "enum": [
                      "provider",
                      "eventTypeName",
                      "timezone",
                      "slots",
                      "formattedText",
                      "freshness"
                    ]
                  }
                }
              ]
            },
            {
              "not": {
                "type": "object"
              }
            }
          ]
        }
      },
      "required": [
        "data"
      ],
      "additionalProperties": false
    }
  ]
}
```

### Underlying API operations

- `booking.availability.status`: `GET /v1/workspaces/:workspaceId/booking/availability/status`
- `booking.availability.list`: `GET /v1/workspaces/:workspaceId/booking/availability`