ShotPulled

List espresso machines

list_machines

Read-onlyIdempotent

List machines registered for the account, with status filter. The id on each row is the number this account knows that record by, counting from 1 — safe to show, and what other tools expect back. Each row carries its maintenance block, researched per model: every task with its class, due state, what the maker forbids, and the guide to follow. settings lists the selectors its model has and where each stands (null: unknown model, or none).

Input Schema

TableJSON Schema

Name	Required	Description	Default
`status`	No	Filter by status: current, archived, or all. Defaults to current.
`maintenance`	No	How much of each row's maintenance block to include. compact (default): every task with its class, due state, schedule and guide. full: also the maker's own words — quote, source, alternates, the interval as written.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`machines`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedOct 4, 2026

addedOutput schema / properties / machines / items / properties / settings / items / properties / provenance

Added value: +{
+  "additionalProperties": true,
+  "properties": {
+    "default_quote": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "default_source": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "quote": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "source": {
+      "type": [
+        "string",
+        "null"
+      ]
+    }
+  },
+  "required": [
+    "source",
+    "quote",
+    "default_source",
+    "default_quote"
+  ],
+  "type": [
+    "object",
+    "null"
+  ]
+}

changedOutput schema / properties / machines / items / properties / settings / items / required

Previous value: -[
-  "key",
-  "label",
-  "type",
-  "options",
-  "min",
-  "max",
-  "step",
-  "unit",
-  "default",
-  "value"
-]New value: +[
+  "key",
+  "label",
+  "type",
+  "options",
+  "min",
+  "max",
+  "step",
+  "unit",
+  "default",
+  "value",
+  "provenance"
+]

Changed13 schema fields changedOct 3, 2026

changedOutput schema / properties / machines / items / properties / catalog_id / type

Previous value: -[
-  "null",
-  "string"
-]New value: +[
+  "string",
+  "null"
+]

changedOutput schema / properties / machines / items / properties / maintenance / properties / catalog / properties / brand / type
```
Previous value: -[
-  "null",
-  "string"
-]New value: +[
+  "string",
+  "null"
+]
```
changedOutput schema / properties / machines / items / properties / maintenance / properties / catalog / properties / id / type
```
Previous value: -[
-  "null",
-  "string"
-]New value: +[
+  "string",
+  "null"
+]
```
changedOutput schema / properties / machines / items / properties / maintenance / properties / catalog / properties / model / type
```
Previous value: -[
-  "null",
-  "string"
-]New value: +[
+  "string",
+  "null"
+]
```
changedOutput schema / properties / machines / items / properties / maintenance / properties / due / type
```
Previous value: -[
-  "null",
-  "object"
-]New value: +[
+  "object",
+  "null"
+]
```
addedOutput schema / properties / machines / items / properties / maintenance / properties / tasks / items / properties / guide / properties / also_covers / items
```
Added value: +{
+  "type": "string"
+}
```
addedOutput schema / properties / machines / items / properties / maintenance / properties / tasks / items / properties / guide / properties / also_covers / type
```
Added value: +[
+  "array",
+  "null"
+]
```
changedOutput schema / properties / machines / items / properties / maintenance / properties / tasks / items / properties / guide / properties / duration_minutes / type
```
Previous value: -[
-  "integer",
-  "null"
-]New value: +[
+  "null",
+  "integer"
+]
```
changedOutput schema / properties / machines / items / properties / maintenance / properties / tasks / items / properties / guide / properties / machine_alert / type
```
Previous value: -[
-  "object",
-  "null"
-]New value: +[
+  "null",
+  "object"
+]
```
changedOutput schema / properties / machines / items / properties / maintenance / properties / tasks / items / properties / status / type
```
Previous value: -[
-  "null",
-  "string"
-]New value: +[
+  "string",
+  "null"
+]
```

changedOutput schema / properties / machines / items / properties / notes / type

Previous value: -[
-  "string",
-  "null"
-]New value: +[
+  "null",
+  "string"
+]

addedOutput schema / properties / machines / items / properties / settings

Added value: +{
+  "items": {
+    "additionalProperties": true,
+    "properties": {
+      "default": {
+        "type": [
+          "number",
+          "null",
+          "string"
+        ]
+      },
+      "key": {
+        "type": "string"
+      },
+      "label": {
+        "type": "string"
+      },
+      "max": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "min": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "options": {
+        "items": {
+          "additionalProperties": true,
+          "properties": {
+            "label": {
+              "type": "string"
+            },
+            "meaning": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "value": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "value",
+            "label",
+            "meaning"
+          ],
+          "type": "object"
+        },
+        "type": [
+          "null",
+          "array"
+        ]
+      },
+      "step": {},
+      "type": {
+        "type": "string"
+      },
+      "unit": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "value": {
+        "type": [
+          "number",
+          "null",
+          "string"
+        ]
+      }
+    },
+    "required": [
+      "key",
+      "label",
+      "type",
+      "options",
+      "min",
+      "max",
+      "step",
+      "unit",
+      "default",
+      "value"
+    ],
+    "type": "object"
+  },
+  "type": [
+    "array",
+    "null"
+  ]
+}

changedOutput schema / properties / machines / items / required

Previous value: -[
-  "id",
-  "name",
-  "control_type",
-  "basket_size_grams",
-  "boiler_type",
-  "notes",
-  "prep_type",
-  "prep_style",
-  "archived",
-  "built_in_grinder_id",
-  "catalog_id",
-  "hardness_dh",
-  "tools_list",
-  "programs",
-  "maintenance"
-]New value: +[
+  "id",
+  "name",
+  "control_type",
+  "basket_size_grams",
+  "boiler_type",
+  "notes",
+  "prep_type",
+  "prep_style",
+  "archived",
+  "built_in_grinder_id",
+  "catalog_id",
+  "hardness_dh",
+  "tools_list",
+  "programs",
+  "maintenance",
+  "settings"
+]

Changed29 schema fields changedSep 28, 2026
- removedOutput schema / properties / machines / items / properties / maintenance / properties / calibration / properties / disturbs_note / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / calibration / properties / epoch_at / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / calibration / properties / epoch_id / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / calibration / properties / epoch_task / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / calibration / properties / evidence / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / calibration / properties / offset_at / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / calibration / properties / offset_source / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / calibration / properties / offset_unit / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / calibration / properties / offset_value / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / calibration / properties / reference_recipe_id / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / catalog / properties / match / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / catalog / properties / via / type
```
Removed value: -"null"
```
- changedOutput schema / properties / machines / items / properties / maintenance / properties / due / properties
```
Previous value: -[]New value: +{}
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / entries / items / properties / evidence / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / entries / items / properties / note / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / entries / items / properties / offset_at / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / entries / items / properties / offset_source / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / entries / items / properties / offset_value / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / sensitivity / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / tasks / items / properties / disturbs_prompt / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / tasks / items / properties / guide / properties / also_covers / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / tasks / items / properties / guide / properties / duration_note / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / tasks / items / properties / guide / properties / machine_alert / properties / can_disable / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / tasks / items / properties / guide / properties / machine_alert / properties / depends_on_setting / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / tasks / items / properties / guide / properties / machine_alert / properties / threshold / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / tasks / items / properties / guide / properties / market / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / tasks / items / properties / guide / properties / variant / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / maintenance / properties / tasks / items / properties / opened_by / type
```
Removed value: -"null"
```
- removedOutput schema / properties / machines / items / properties / programs / items / properties / target_time_s / type
```
Removed value: -"null"
```

Changed3 schema fields changedSep 28, 2026

addedOutput schema / properties / machines / items / properties / maintenance / properties / due / additionalProperties / properties / soon
```
Added value: +{
+  "type": "boolean"
+}
```
addedOutput schema / properties / machines / items / properties / maintenance / properties / due / additionalProperties / properties / soon_at
```
Added value: +{
+  "type": [
+    "null",
+    "string"
+  ]
+}
```

changed

Output schema / properties / machines / items / properties / maintenance / properties / due / additionalProperties / required

Previous value: -[
-  "state",
-  "ratio",
-  "basis",
-  "every",
-  "done",
-  "remaining",
-  "lower_bound",
-  "due_at",
-  "overdue_at",
-  "last_at",
-  "every_source",
-  "muted",
-  "muted_until"
-]New value: +[
+  "state",
+  "ratio",
+  "basis",
+  "every",
+  "done",
+  "remaining",
+  "lower_bound",
+  "soon",
+  "soon_at",
+  "due_at",
+  "overdue_at",
+  "last_at",
+  "every_source",
+  "muted",
+  "muted_until"
+]

Changed6 schema fields changedSep 27, 2026

addedInput schema / properties / maintenance

Added value: +{
+  "description": "How much of each row's maintenance block to include. compact (default): every task with its class, due state, schedule and guide. full: also the maker's own words — quote, source, alternates, the interval as written.",
+  "enum": [
+    "compact",
+    "full"
+  ],
+  "type": "string"
+}

changedOutput schema / properties / machines / items / properties / built_in_grinder_id / type
```
Previous value: -"null"New value: +[
+  "null",
+  "integer"
+]
```
addedOutput schema / properties / machines / items / properties / catalog_id
```
Added value: +{
+  "type": [
+    "null",
+    "string"
+  ]
+}
```
addedOutput schema / properties / machines / items / properties / hardness_dh
```
Added value: +{
+  "type": [
+    "null",
+    "number"
+  ]
+}
```

addedOutput schema / properties / machines / items / properties / maintenance

Added value: +{
+  "additionalProperties": true,
+  "properties": {
+    "calibration": {
+      "additionalProperties": true,
+      "properties": {
+        "disturbs_note": {
+          "type": "null"
+        },
+        "epoch_at": {
+          "type": "null"
+        },
+        "epoch_id": {
+          "type": "null"
+        },
+        "epoch_task": {
+          "type": "null"
+        },
+        "evidence": {
+          "type": "null"
+        },
+        "offset_at": {
+          "type": "null"
+        },
+        "offset_source": {
+          "type": "null"
+        },
+        "offset_unit": {
+          "type": "null"
+        },
+        "offset_value": {
+          "type": "null"
+        },
+        "reference_recipe_id": {
+          "type": "null"
+        },
+        "stale_recipe_count": {
+          "type": "integer"
+        },
+        "state": {
+          "type": "string"
+        },
+        "untranslatable_recipe_count": {
+          "type": "integer"
+        }
+      },
+      "required": [
+        "stale_recipe_count",
+        "untranslatable_recipe_count",
+        "reference_recipe_id",
+        "state",
+        "epoch_id",
+        "epoch_task",
+        "disturbs_note",
+        "epoch_at",
+        "offset_value",
+        "offset_unit",
+        "offset_source",
+        "offset_at",
+        "evidence"
+      ],
+      "type": "object"
+    },
+    "catalog": {
+      "additionalProperties": true,
+      "properties": {
+        "brand": {
+          "type": [
+            "null",
+            "string"
+          ]
+        },
+        "declined": {
+          "type": "boolean"
+        },
+        "id": {
+          "type": [
+            "null",
+            "string"
+          ]
+        },
+        "match": {
+          "type": "null"
+        },
+        "model": {
+          "type": [
+            "null",
+            "string"
+          ]
+        },
+        "via": {
+          "type": "null"
+        }
+      },
+      "required": [
+        "id",
+        "brand",
+        "model",
+        "via",
+        "match",
+        "declined"
+      ],
+      "type": "object"
+    },
+    "catalog_version": {
+      "type": "string"
+    },
+    "computed_at": {
+      "type": "string"
+    },
+    "due": {
+      "additionalProperties": {
+        "additionalProperties": true,
+        "properties": {
+          "basis": {
+            "type": [
+              "null",
+              "string"
+            ]
+          },
+          "done": {
+            "type": [
+              "null",
+              "integer"
+            ]
+          },
+          "due_at": {
+            "type": [
+              "null",
+              "string"
+            ]
+          },
+          "every": {
+            "type": [
+              "null",
+              "integer"
+            ]
+          },
+          "every_source": {
+            "type": [
+              "null",
+              "string"
+            ]
+          },
+          "last_at": {
+            "type": [
+              "null",
+              "string"
+            ]
+          },
+          "lower_bound": {
+            "type": "boolean"
+          },
+          "muted": {
+            "type": "boolean"
+          },
+          "muted_until": {
+            "type": [
+              "null",
+              "string"
+            ]
+          },
+          "overdue_at": {
+            "type": [
+              "null",
+              "string"
+            ]
+          },
+          "ratio": {
+            "type": [
+              "integer",
+              "number"
+            ]
+          },
+          "remaining": {
+            "type": [
+              "null",
+              "integer"
+            ]
+          },
+          "state": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "state",
+          "ratio",
+          "basis",
+          "every",
+          "done",
+          "remaining",
+          "lower_bound",
+          "due_at",
+          "overdue_at",
+          "last_at",
+          "every_source",
+          "muted",
+          "muted_until"
+        ],
+        "type": "object"
+      },
+      "properties": [],
+      "required": [],
+      "type": [
+        "null",
+        "object"
+      ]
+    },
+    "entries": {
+      "items": {
+        "additionalProperties": true,
+        "properties": {
+          "created_at": {
+            "type": "string"
+          },
+          "details": {
+            "additionalProperties": true,
+            "properties": {
+              "filter_id": {
+                "type": "string"
+              },
+              "label": {
+                "type": "string"
+              },
+              "product": {
+                "type": "string"
+              }
+            },
+            "required": [],
+            "type": "object"
+          },
+          "details_known": {
+            "type": "boolean"
+          },
+          "details_version": {
+            "type": "integer"
+          },
+          "disturbs_zero": {
+            "type": "integer"
+          },
+          "equipment_id": {
+            "type": "integer"
+          },
+          "equipment_kind": {
+            "type": "string"
+          },
+          "evidence": {
+            "type": "null"
+          },
+          "guide_id": {
+            "type": [
+              "null",
+              "string"
+            ]
+          },
+          "id": {
+            "type": "integer"
+          },
+          "note": {
+            "type": "null"
+          },
+          "offset_at": {
+            "type": "null"
+          },
+          "offset_source": {
+            "type": "null"
+          },
+          "offset_value": {
+            "type": "null"
+          },
+          "performed_at": {
+            "type": "string"
+          },
+          "task": {
+            "type": "string"
+          },
+          "task_label": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "id",
+          "equipment_kind",
+          "equipment_id",
+          "task",
+          "performed_at",
+          "disturbs_zero",
+          "note",
+          "offset_value",
+          "offset_source",
+          "offset_at",
+          "evidence",
+          "details",
+          "details_version",
+          "created_at",
+          "guide_id",
+          "details_known",
+          "task_label"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "entries_total": {
+      "type": "integer"
+    },
+    "hardness": {
+      "additionalProperties": true,
+      "properties": {
+        "dh": {
+          "type": [
+            "null",
+            "number"
+          ]
+        },
+        "dkh": {
+          "type": [
+            "null",
+            "number"
+          ]
+        },
+        "dkh_source": {
+          "type": [
+            "null",
+            "string"
+          ]
+        },
+        "source": {
+          "type": [
+            "null",
+            "string"
+          ]
+        }
+      },
+      "required": [
+        "dh",
+        "dkh",
+        "source",
+        "dkh_source"
+      ],
+      "type": "object"
+    },
+    "sensitivity": {
+      "type": "null"
+    },
+    "tasks": {
+      "items": {
+        "additionalProperties": true,
+        "properties": {
+          "class": {
+            "type": "string"
+          },
+          "details_fields": {
+            "items": {
+              "additionalProperties": true,
+              "properties": {
+                "hint": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "key": {
+                  "type": "string"
+                },
+                "label": {
+                  "type": "string"
+                },
+                "options": {
+                  "items": {
+                    "additionalProperties": true,
+                    "properties": {
+                      "id": {
+                        "type": "string"
+                      },
+                      "label": {
+                        "type": "string"
+                      }
+                    },
+                    "required": [
+                      "id",
+                      "label"
+                    ],
+                    "type": "object"
+                  },
+                  "type": "array"
+                },
+                "required": {
+                  "type": "boolean"
+                },
+                "source": {
+                  "type": "string"
+                },
+                "type": {
+                  "type": "string"
+                }
+              },
+              "required": [
+                "key",
+                "type",
+                "label",
+                "hint",
+                "required"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "details_version": {
+            "type": "integer"
+          },
+          "disturbs_note": {
+            "type": "string"
+          },
+          "disturbs_prompt": {
+            "type": "null"
+          },
+          "disturbs_zero": {
+            "type": "boolean"
+          },
+          "every": {
+            "additionalProperties": true,
+            "properties": {
+              "days": {
+                "type": "integer"
+              },
+              "litres": {
+                "type": [
+                  "integer",
+                  "number"
+                ]
+              },
+              "shots": {
+                "type": "integer"
+              }
+            },
+            "required": [],
+            "type": [
+              "null",
+              "object"
+            ]
+          },
+          "every_source": {
+            "additionalProperties": true,
+            "properties": {
+              "days": {
+                "type": "string"
+              },
+              "litres": {
+                "type": "string"
+              },
+              "shots": {
+                "type": "string"
+              }
+            },
+            "required": [],
+            "type": [
+              "null",
+              "object"
+            ]
+          },
+          "guide": {
+            "additionalProperties": true,
+            "properties": {
+              "also_covers": {
+                "type": "null"
+              },
+              "basis": {
+                "type": "string"
+              },
+              "duration_minutes": {
+                "type": [
+                  "integer",
+                  "null"
+                ]
+              },
+              "duration_note": {
+                "type": "null"
+              },
+              "id": {
+                "type": "string"
+              },
+              "machine_alert": {
+                "additionalProperties": true,
+                "properties": {
+                  "can_disable": {
+                    "type": "null"
+                  },
+                  "clears": {
+                    "type": [
+                      "null",
+                      "string"
+                    ]
+                  },
+                  "counts": {
+                    "type": "string"
+                  },
+                  "depends_on_setting": {
+                    "type": "null"
+                  },
+                  "indicator": {
+                    "type": "string"
+                  },
+                  "shown_as": {
+                    "type": "string"
+                  },
+                  "source": {
+                    "type": "string"
+                  },
+                  "threshold": {
+                    "type": "null"
+                  }
+                },
+                "required": [],
+                "type": [
+                  "object",
+                  "null"
+                ]
+              },
+              "market": {
+                "type": "null"
+              },
+              "scope": {
+                "type": "string"
+              },
+              "steps": {
+                "type": "integer"
+              },
+              "title": {
+                "type": "string"
+              },
+              "variant": {
+                "type": "null"
+              },
+              "warnings": {
+                "type": "integer"
+              }
+            },
+            "required": [],
+            "type": [
+              "null",
+              "object"
+            ]
+          },
+          "kind": {
+            "type": "string"
+          },
+          "label": {
+            "type": "string"
+          },
+          "offset_integral": {
+            "type": "boolean"
+          },
+          "offset_unit": {
+            "type": "string"
+          },
+          "opened_by": {
+            "type": "null"
+          },
+          "schedule": {
+            "additionalProperties": true,
+            "properties": {
+              "enabled": {
+                "type": "boolean"
+              },
+              "every": {
+                "additionalProperties": true,
+                "properties": {
+                  "days": {
+                    "type": "integer"
+                  },
+                  "litres": {
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "days",
+                  "litres"
+                ],
+                "type": "object"
+              },
+              "muted_until": {
+                "type": "string"
+              }
+            },
+            "required": [],
+            "type": [
+              "null",
+              "object"
+            ]
+          },
+          "scheduled": {
+            "type": "boolean"
+          },
+          "status": {
+            "type": [
+              "null",
+              "string"
+            ]
+          },
+          "sub": {
+            "type": "string"
+          },
+          "trigger": {
+            "type": [
+              "null",
+              "string"
+            ]
+          },
+          "value": {
+            "type": "string"
+          },
+          "why": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "value",
+          "kind",
+          "label",
+          "sub",
+          "disturbs_zero",
+          "every",
+          "why",
+          "disturbs_note",
+          "offset_unit",
+          "offset_integral",
+          "scheduled",
+          "opened_by",
+          "details_version",
+          "details_fields",
+          "class",
+          "status",
+          "trigger",
+          "every_source",
+          "disturbs_prompt",
+          "guide",
+          "schedule"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    }
+  },
+  "required": [
+    "tasks",
+    "due",
+    "calibration",
+    "sensitivity",
+    "entries",
+    "entries_total",
+    "catalog_version",
+    "computed_at",
+    "catalog",
+    "hardness"
+  ],
+  "type": "object"
+}

changedOutput schema / properties / machines / items / required

Previous value: -[
-  "id",
-  "name",
-  "control_type",
-  "basket_size_grams",
-  "boiler_type",
-  "notes",
-  "prep_type",
-  "prep_style",
-  "archived",
-  "built_in_grinder_id",
-  "tools_list",
-  "programs"
-]New value: +[
+  "id",
+  "name",
+  "control_type",
+  "basket_size_grams",
+  "boiler_type",
+  "notes",
+  "prep_type",
+  "prep_style",
+  "archived",
+  "built_in_grinder_id",
+  "catalog_id",
+  "hardness_dh",
+  "tools_list",
+  "programs",
+  "maintenance"
+]

Changed2 schema fields changedSep 16, 2026
- changedOutput schema / properties / machines / items / properties / notes / type
```
Previous value: -"null"New value: +[
+  "string",
+  "null"
+]
```
- addedOutput schema / properties / machines / items / properties / tools_list / items
```
Added value: +{
+  "type": "string"
+}
```
Changed5 schema fields changedAug 27, 2026
- changedOutput schema / properties / machines / items / properties / basket_size_grams / type
```
Previous value: -"integer"New value: +[
+  "null",
+  "integer"
+]
```
- changedOutput schema / properties / machines / items / properties / boiler_type / type
```
Previous value: -"string"New value: +[
+  "null",
+  "string"
+]
```
- changedOutput schema / properties / machines / items / properties / prep_style / type
```
Previous value: -"null"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / machines / items / properties / prep_type / type
```
Previous value: -"null"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / machines / items / properties / programs / items / properties / description / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```

Changed1 schema field changedAug 17, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "properties": {
+    "machines": {
+      "items": {
+        "additionalProperties": true,
+        "properties": {
+          "archived": {
+            "type": "integer"
+          },
+          "basket_size_grams": {
+            "type": "integer"
+          },
+          "boiler_type": {
+            "type": "string"
+          },
+          "built_in_grinder_id": {
+            "type": "null"
+          },
+          "control_type": {
+            "type": "string"
+          },
+          "id": {
+            "type": "integer"
+          },
+          "name": {
+            "type": "string"
+          },
+          "notes": {
+            "type": "null"
+          },
+          "prep_style": {
+            "type": "null"
+          },
+          "prep_type": {
+            "type": "null"
+          },
+          "programs": {
+            "items": {
+              "additionalProperties": true,
+              "properties": {
+                "description": {
+                  "type": "string"
+                },
+                "id": {
+                  "type": "integer"
+                },
+                "is_active": {
+                  "type": "integer"
+                },
+                "program_number": {
+                  "type": "integer"
+                },
+                "program_type": {
+                  "type": "string"
+                },
+                "target_time_s": {
+                  "type": "null"
+                },
+                "target_volume_g": {
+                  "type": "integer"
+                },
+                "volume_source": {
+                  "type": "string"
+                }
+              },
+              "required": [
+                "id",
+                "program_number",
+                "program_type",
+                "target_volume_g",
+                "target_time_s",
+                "volume_source",
+                "description",
+                "is_active"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "tools_list": {
+            "type": "array"
+          }
+        },
+        "required": [
+          "id",
+          "name",
+          "control_type",
+          "basket_size_grams",
+          "boiler_type",
+          "notes",
+          "prep_type",
+          "prep_style",
+          "archived",
+          "built_in_grinder_id",
+          "tools_list",
+          "programs"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    }
+  },
+  "required": [
+    "machines"
+  ],
+  "type": "object"
+}

First observedJun 16, 2026

TDQS

A3.9/5.0

Behavior4/5

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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive), so the description is free to add data-shape context instead: the per-account ordinal `id`, the researched maintenance block, and the null semantics of `settings`. That is genuinely useful context beyond the structured fields, though it says nothing about pagination or result size behavior.

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 purpose in the first clause, then progressively deeper return-shape detail; no filler sentences. It is dense but every sentence conveys a distinct fact, with only mild overlap against the output schema.

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 two-param, zero-required list tool with an output schema, the definition is nearly sufficient: it covers scope, filtering, and the meaning of the two most confusing return fields. It stops short of full completeness by omitting any ordering, paging, or empty-result behavior.

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 100% and both enums are fully documented with defaults in the schema, so the schema carries parameter meaning. The description only echoes the status filter and says nothing about how compact vs full changes cost or payload, so baseline 3 is right.

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?

Opens with a specific verb+resource ('List machines registered for the account') and scopes it with the status filter. The resource is distinct from the many list_* siblings (list_beans, list_grinders, list_shots), so an agent can pick it without opening the schema.

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

Usage Guidelines3/5

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

Implied usage only: it notes the status filter and defaults to current, and hints that the returned `id` is 'what other tools expect back', which implies chaining. But it never states when to prefer this over list_grinders/list_shots or when to use status=all, so guidance is inferred 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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