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botclaw_get_changes

Read-onlyIdempotent

Read a sequence-ordered change stream after a decimal cursor. Start at 0, persist nextCursor only after applying the page, and continue while hasMore. Upserts contain the current published projection; withdrawn events contain only ID/revision/date, item=null. Remove withdrawn records locally. Replaying a page is safe. This is not a historical full-text archive.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNo
cursorNo0
languageNoen

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
_trustYes
cursorYes
changesYes
hasMoreYes
nextCursorYes
highWatermarkYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedOutput schema / properties / changes / items / properties / item / anyOf
      Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "applicability": {
-        "additionalProperties": false,
-        "properties": {
-          "platforms": {
-            "items": {
-              "type": "string"
-            },
-            "maxItems": 20,
-            "type": "array"
-          },
-          "requirements": {
-            "items": {
-              "type": "string"
-            },
-            "maxItems": 30,
-            "type": "array"
-          },
-          "version": {
-            "type": [
-              "string",
-              "null"
-            ]
-          }
-        },
-        "required": [
-          "version",
-          "platforms",
-          "requirements"
-        ],
-        "type": "object"
-      },
-      "body": {
-        "anyOf": [
-          {
-            "additionalProperties": false,
-            "properties": {
-              "introduction": {
-                "maxLength": 20000,
-                "type": "string"
-              },
-              "sections": {
-                "items": {
-                  "additionalProperties": false,
-                  "properties": {
-                    "code": {
-                      "maxLength": 20000,
-                      "type": "string"
-                    },
-                    "heading": {
-                      "maxLength": 500,
-                      "type": "string"
-                    },
-                    "paragraphs": {
-                      "items": {
-                        "maxLength": 20000,
-                        "type": "string"
-                      },
-                      "maxItems": 50,
-                      "type": "array"
-                    },
-                    "steps": {
-                      "items": {
-                        "maxLength": 5000,
-                        "type": "string"
-                      },
-                      "maxItems": 50,
-                      "type": "array"
-                    }
-                  },
-                  "required": [
-                    "heading",
-                    "paragraphs"
-                  ],
-                  "type": "object"
-                },
-                "maxItems": 30,
-                "type": "array"
-              }
-            },
-            "required": [
-              "introduction",
-              "sections"
-            ],
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "canonicalUrl": {
-        "format": "uri",
-        "type": "string"
-      },
-      "category": {
-        "type": "string"
-      },
-      "collectedAt": {
-        "type": "string"
-      },
-      "contentType": {
-        "type": "string"
-      },
-      "id": {
-        "type": "string"
-      },
-      "indexable": {
-        "type": "boolean"
-      },
-      "language": {
-        "enum": [
-          "en",
-          "zh"
-        ],
-        "type": "string"
-      },
-      "product": {
-        "type": "string"
-      },
-      "review": {
-        "additionalProperties": false,
-        "properties": {
-          "pendingChanges": {
-            "maximum": 9007199254740991,
-            "minimum": -9007199254740991,
-            "type": "integer"
-          },
-          "policyDays": {
-            "maximum": 9007199254740991,
-            "minimum": -9007199254740991,
-            "type": "integer"
-          },
-          "state": {
-            "enum": [
-              "current",
-              "due",
-              "pending",
-              "not_reviewed"
-            ],
-            "type": "string"
-          }
-        },
-        "required": [
-          "state",
-          "pendingChanges",
-          "policyDays"
-        ],
-        "type": "object"
-      },
-      "reviewedAt": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "revision": {
-        "maximum": 9007199254740991,
-        "minimum": 1,
-        "type": "integer"
-      },
-      "source": {
-        "additionalProperties": false,
-        "properties": {
-          "id": {
-            "type": "string"
-          },
-          "name": {
-            "type": "string"
-          },
-          "origin": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "id",
-          "name",
-          "origin"
-        ],
-        "type": "object"
-      },
-      "sourcePublishedAt": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "sourceUrls": {
-        "items": {
-          "format": "uri",
-          "type": "string"
-        },
-        "type": "array"
-      },
-      "summary": {
-        "type": "string"
-      },
-      "summaryMethod": {
-        "type": "string"
-      },
-      "supersededBy": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "title": {
-        "type": "string"
-      },
-      "updatedAt": {
-        "type": "string"
-      },
-      "verification": {
-        "additionalProperties": false,
-        "properties": {
-          "checkedAt": {
-            "type": [
-              "string",
-              "null"
-            ]
-          },
-          "kind": {
-            "enum": [
-              "official_documentation",
-              "independent_report",
-              "software_execution",
-              "source_excerpt"
-            ],
-            "type": "string"
-          },
-          "limitations": {
-            "items": {
-              "type": "string"
-            },
-            "maxItems": 30,
-            "type": "array"
-          },
-          "urls": {
-            "items": {
-              "format": "uri",
-              "type": "string"
-            },
-            "maxItems": 30,
-            "type": "array"
-          }
-        },
-        "required": [
-          "kind",
-          "checkedAt",
-          "urls",
-          "limitations"
-        ],
-        "type": "object"
-      }
-    },
-    "required": [
-      "id",
-      "product",
-      "language",
-      "title",
-      "summary",
-      "contentType",
-      "category",
-      "revision",
-      "canonicalUrl",
-      "sourceUrls",
-      "sourcePublishedAt",
-      "reviewedAt",
-      "collectedAt",
-      "updatedAt",
-      "source",
-      "summaryMethod",
-      "applicability",
-      "verification",
-      "body",
-      "indexable",
-      "supersededBy",
-      "review"
-    ],
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "applicability": {
+        "additionalProperties": false,
+        "properties": {
+          "platforms": {
+            "items": {
+              "type": "string"
+            },
+            "maxItems": 20,
+            "type": "array"
+          },
+          "requirements": {
+            "items": {
+              "type": "string"
+            },
+            "maxItems": 30,
+            "type": "array"
+          },
+          "version": {
+            "type": [
+              "string",
+              "null"
+            ]
+          }
+        },
+        "required": [
+          "version",
+          "platforms",
+          "requirements"
+        ],
+        "type": "object"
+      },
+      "body": {
+        "anyOf": [
+          {
+            "additionalProperties": false,
+            "properties": {
+              "introduction": {
+                "maxLength": 20000,
+                "type": "string"
+              },
+              "sections": {
+                "items": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "code": {
+                      "maxLength": 20000,
+                      "type": "string"
+                    },
+                    "heading": {
+                      "maxLength": 500,
+                      "type": "string"
+                    },
+                    "paragraphs": {
+                      "items": {
+                        "maxLength": 20000,
+                        "type": "string"
+                      },
+                      "maxItems": 50,
+                      "type": "array"
+                    },
+                    "steps": {
+                      "items": {
+                        "maxLength": 5000,
+                        "type": "string"
+                      },
+                      "maxItems": 50,
+                      "type": "array"
+                    }
+                  },
+                  "required": [
+                    "heading",
+                    "paragraphs"
+                  ],
+                  "type": "object"
+                },
+                "maxItems": 30,
+                "type": "array"
+              }
+            },
+            "required": [
+              "introduction",
+              "sections"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "canonicalUrl": {
+        "format": "uri",
+        "type": "string"
+      },
+      "category": {
+        "type": "string"
+      },
+      "collectedAt": {
+        "type": "string"
+      },
+      "contentType": {
+        "type": "string"
+      },
+      "editorial": {
+        "additionalProperties": false,
+        "properties": {
+          "period": {
+            "additionalProperties": false,
+            "properties": {
+              "cutoffAt": {
+                "type": "string"
+              },
+              "end": {
+                "type": "string"
+              },
+              "start": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "start",
+              "end",
+              "cutoffAt"
+            ],
+            "type": "object"
+          },
+          "productIds": {
+            "items": {
+              "type": "string"
+            },
+            "maxItems": 7,
+            "type": "array"
+          },
+          "relatedIds": {
+            "items": {
+              "type": "string"
+            },
+            "maxItems": 30,
+            "type": "array"
+          },
+          "section": {
+            "enum": [
+              "radar",
+              "weekly",
+              "topic",
+              "profile"
+            ],
+            "type": "string"
+          },
+          "sourceDate": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "version": {
+            "type": [
+              "string",
+              "null"
+            ]
+          }
+        },
+        "required": [
+          "section",
+          "productIds",
+          "relatedIds",
+          "sourceDate",
+          "version"
+        ],
+        "type": "object"
+      },
+      "id": {
+        "type": "string"
+      },
+      "indexable": {
+        "type": "boolean"
+      },
+      "language": {
+        "enum": [
+          "en",
+          "zh"
+        ],
+        "type": "string"
+      },
+      "product": {
+        "type": "string"
+      },
+      "review": {
+        "additionalProperties": false,
+        "properties": {
+          "pendingChanges": {
+            "maximum": 9007199254740991,
+            "minimum": -9007199254740991,
+            "type": "integer"
+          },
+          "policyDays": {
+            "maximum": 9007199254740991,
+            "minimum": -9007199254740991,
+            "type": "integer"
+          },
+          "state": {
+            "enum": [
+              "current",
+              "due",
+              "pending",
+              "not_reviewed"
+            ],
+            "type": "string"
+          }
+        },
+        "required": [
+          "state",
+          "pendingChanges",
+          "policyDays"
+        ],
+        "type": "object"
+      },
+      "reviewedAt": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "revision": {
+        "maximum": 9007199254740991,
+        "minimum": 1,
+        "type": "integer"
+      },
+      "source": {
+        "additionalProperties": false,
+        "properties": {
+          "id": {
+            "type": "string"
+          },
+          "name": {
+            "type": "string"
+          },
+          "origin": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "id",
+          "name",
+          "origin"
+        ],
+        "type": "object"
+      },
+      "sourcePublishedAt": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "sourceUrls": {
+        "items": {
+          "format": "uri",
+          "type": "string"
+        },
+        "type": "array"
+      },
+      "summary": {
+        "type": "string"
+      },
+      "summaryMethod": {
+        "type": "string"
+      },
+      "supersededBy": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "title": {
+        "type": "string"
+      },
+      "updatedAt": {
+        "type": "string"
+      },
+      "verification": {
+        "additionalProperties": false,
+        "properties": {
+          "checkedAt": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "kind": {
+            "enum": [
+              "official_documentation",
+              "independent_report",
+              "software_execution",
+              "source_excerpt"
+            ],
+            "type": "string"
+          },
+          "limitations": {
+            "items": {
+              "type": "string"
+            },
+            "maxItems": 30,
+            "type": "array"
+          },
+          "urls": {
+            "items": {
+              "format": "uri",
+              "type": "string"
+            },
+            "maxItems": 30,
+            "type": "array"
+          }
+        },
+        "required": [
+          "kind",
+          "checkedAt",
+          "urls",
+          "limitations"
+        ],
+        "type": "object"
+      }
+    },
+    "required": [
+      "id",
+      "product",
+      "language",
+      "title",
+      "summary",
+      "contentType",
+      "category",
+      "revision",
+      "canonicalUrl",
+      "sourceUrls",
+      "sourcePublishedAt",
+      "reviewedAt",
+      "collectedAt",
+      "updatedAt",
+      "source",
+      "summaryMethod",
+      "applicability",
+      "verification",
+      "body",
+      "indexable",
+      "supersededBy",
+      "review"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]
  2. First observed

TDQS

A4.4/5.0
Behavior4/5

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

Annotations already declare readOnly/idempotent/non-destructive, so the bar is lower, yet the description adds substantive behavior: upserts carry the current published projection, withdrawn events carry only ID/revision/date with item=null, and pages are replay-safe. It does not state rate limits, ordering guarantees across concurrent writers, or token expiry, so it stops short of a 5.

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?

Five short sentences, no preamble, front-loaded with the core operation and followed by the paging protocol and event semantics. Every sentence carries distinct information.

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 shapes needn't be fully restated, and the description still characterizes the two event types usefully. The remaining gap is documentation of limit and language behavior, which an agent must infer from the schema alone.

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 0%, so the description must compensate. It explains cursor semantics well (decimal, start at 0, chained via nextCursor) and implies page sizing, but says nothing about the limit bounds/default or the language enum, leaving those purely to the bare schema types.

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 precise verb and resource ('Read a sequence-ordered change stream after a decimal cursor') and explicitly bounds scope with 'This is not a historical full-text archive,' which separates it from archival/search siblings like botclaw_search or botclaw_get_item.

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

Usage Guidelines5/5

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

Gives explicit operating procedure: start at 0, persist nextCursor only after applying the page, continue while hasMore, remove withdrawn records locally, and that replaying a page is safe. It also states what the tool is not for, which is genuine when/when-not guidance.

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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