Lovie Company Formation

Close Cap Table Round

cap_table_close_cap_table_round

Destructive

CloseCapTableRound PERMANENTLY closes the round: runs the calc engine, persists the SAFE conversions + ownership snapshots, and flips the round to CLOSED. This is the action for "close the round", "make it permanent", or "finalize the round" — it CANNOT be undone and writes the cap-table of record, so confirm with the user first. To only estimate the outcome without closing, use PreviewCloseCapTableRound.

Input Schema

TableJSON Schema

Name	Required	Description
`roundId`	Yes	UUID value wrapper.
`companyId`	Yes	UUID value wrapper.
`newMoneyRaise`	No
`optionPoolBasis`	No
`recordedHistory`	No
`preMoneyValuation`	No
`carryForwardUnwired`	No
`targetOptionPoolPct`	No

Output Schema

TableJSON Schema

Name	Required	Description	Default
`round`	No
`result`	No
`snapshots`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedOct 8, 2026

addedInput schema / properties / optionPoolBasis

Added value: +{
+  "enum": [
+    "CAP_TABLE_OPTION_POOL_BASIS_UNSPECIFIED",
+    "CAP_TABLE_OPTION_POOL_BASIS_POST_ROUND",
+    "CAP_TABLE_OPTION_POOL_BASIS_PRE_MONEY"
+  ],
+  "type": "string"
+}

changedOutput schema / properties / result / anyOf

Previous value: -[
-  {
-    "properties": {
-      "convertedSafes": {
-        "items": {
-          "properties": {
-            "conversionPrice": {
-              "type": "string"
-            },
-            "effectiveCap": {
-              "type": "string"
-            },
-            "effectiveDiscount": {
-              "type": "string"
-            },
-            "investorId": {
-              "anyOf": [
-                {
-                  "description": "UUID value wrapper.",
-                  "properties": {
-                    "value": {
-                      "format": "uuid",
-                      "type": "string"
-                    }
-                  },
-                  "type": "object"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "method": {
-              "enum": [
-                "CAP_TABLE_CONVERSION_METHOD_UNSPECIFIED",
-                "CAP_TABLE_CONVERSION_METHOD_CAP",
-                "CAP_TABLE_CONVERSION_METHOD_DISCOUNT",
-                "CAP_TABLE_CONVERSION_METHOD_BETTER_OF_CAP",
-                "CAP_TABLE_CONVERSION_METHOD_BETTER_OF_DISCOUNT",
-                "CAP_TABLE_CONVERSION_METHOD_MFN_ADJUSTED",
-                "CAP_TABLE_CONVERSION_METHOD_ROUND_PRICE"
-              ],
-              "type": "string"
-            },
-            "name": {
-              "type": "string"
-            },
-            "ownershipPct": {
-              "type": "string"
-            },
-            "shares": {
-              "type": "string"
-            }
-          },
-          "required": [
-            "investorId"
-          ],
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "invariantsHold": {
-        "type": "boolean"
-      },
-      "investorShares": {
-        "type": "string"
-      },
-      "optionPool": {
-        "anyOf": [
-          {
-            "properties": {
-              "netNewPoolShares": {
-                "type": "string"
-              },
-              "poolPct": {
-                "type": "string"
-              },
-              "poolShares": {
-                "type": "string"
-              }
-            },
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "postMoneyValuation": {
-        "type": "string"
-      },
-      "postRoundFdsc": {
-        "type": "string"
-      },
-      "preInvestmentFdsc": {
-        "type": "string"
-      },
-      "preInvestmentShares": {
-        "type": "string"
-      },
-      "pricePerShare": {
-        "type": "string"
-      },
-      "roundId": {
-        "anyOf": [
-          {
-            "description": "UUID value wrapper.",
-            "properties": {
-              "value": {
-                "format": "uuid",
-                "type": "string"
-              }
-            },
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "snapshots": {
-        "items": {
-          "properties": {
-            "conversionDilution": {
-              "type": "string"
-            },
-            "fullyDilutedShares": {
-              "type": "string"
-            },
-            "ownershipPct": {
-              "type": "string"
-            },
-            "shares": {
-              "type": "string"
-            },
-            "shuffleDilution": {
-              "type": "string"
-            },
-            "stakeholderId": {
-              "anyOf": [
-                {
-                  "description": "UUID value wrapper.",
-                  "properties": {
-                    "value": {
-                      "format": "uuid",
-                      "type": "string"
-                    }
-                  },
-                  "type": "object"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "stakeholderName": {
-              "type": "string"
-            },
-            "stakeholderType": {
-              "type": "string"
-            },
-            "totalRoundDilution": {
-              "type": "string"
-            }
-          },
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "warnings": {
-        "items": {
-          "type": "string"
-        },
-        "type": "array"
-      }
-    },
-    "required": [
-      "roundId"
-    ],
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "properties": {
+      "assumptions": {
+        "items": {
+          "properties": {
+            "code": {
+              "type": "string"
+            },
+            "detail": {
+              "type": "string"
+            },
+            "holder": {
+              "type": "string"
+            },
+            "holdingId": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "convertedSafes": {
+        "items": {
+          "properties": {
+            "conversionPrice": {
+              "type": "string"
+            },
+            "effectiveCap": {
+              "type": "string"
+            },
+            "effectiveDiscount": {
+              "type": "string"
+            },
+            "investorId": {
+              "anyOf": [
+                {
+                  "description": "UUID value wrapper.",
+                  "properties": {
+                    "value": {
+                      "format": "uuid",
+                      "type": "string"
+                    }
+                  },
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "method": {
+              "enum": [
+                "CAP_TABLE_CONVERSION_METHOD_UNSPECIFIED",
+                "CAP_TABLE_CONVERSION_METHOD_CAP",
+                "CAP_TABLE_CONVERSION_METHOD_DISCOUNT",
+                "CAP_TABLE_CONVERSION_METHOD_BETTER_OF_CAP",
+                "CAP_TABLE_CONVERSION_METHOD_BETTER_OF_DISCOUNT",
+                "CAP_TABLE_CONVERSION_METHOD_MFN_ADJUSTED",
+                "CAP_TABLE_CONVERSION_METHOD_ROUND_PRICE"
+              ],
+              "type": "string"
+            },
+            "name": {
+              "type": "string"
+            },
+            "ownershipPct": {
+              "type": "string"
+            },
+            "shares": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "investorId"
+          ],
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "invariantsHold": {
+        "type": "boolean"
+      },
+      "investorShares": {
+        "type": "string"
+      },
+      "optionPool": {
+        "anyOf": [
+          {
+            "properties": {
+              "netNewPoolShares": {
+                "type": "string"
+              },
+              "poolPct": {
+                "type": "string"
+              },
+              "poolShares": {
+                "type": "string"
+              },
+              "postRoundPoolPct": {
+                "type": "string"
+              },
+              "preMoneyPoolPct": {
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "postMoneyValuation": {
+        "type": "string"
+      },
+      "postRoundFdsc": {
+        "type": "string"
+      },
+      "preInvestmentFdsc": {
+        "type": "string"
+      },
+      "preInvestmentShares": {
+        "type": "string"
+      },
+      "pricePerShare": {
+        "type": "string"
+      },
+      "roundId": {
+        "anyOf": [
+          {
+            "description": "UUID value wrapper.",
+            "properties": {
+              "value": {
+                "format": "uuid",
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "snapshots": {
+        "items": {
+          "properties": {
+            "conversionDilution": {
+              "type": "string"
+            },
+            "fullyDilutedShares": {
+              "type": "string"
+            },
+            "ownershipPct": {
+              "type": "string"
+            },
+            "shares": {
+              "type": "string"
+            },
+            "shuffleDilution": {
+              "type": "string"
+            },
+            "stakeholderId": {
+              "anyOf": [
+                {
+                  "description": "UUID value wrapper.",
+                  "properties": {
+                    "value": {
+                      "format": "uuid",
+                      "type": "string"
+                    }
+                  },
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "stakeholderName": {
+              "type": "string"
+            },
+            "stakeholderType": {
+              "type": "string"
+            },
+            "totalRoundDilution": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "warnings": {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      }
+    },
+    "required": [
+      "roundId"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

Changed1 schema field changedSep 28, 2026
- addedInput schema / properties / recordedHistory
```
Added value: +{
+  "type": "boolean"
+}
```

Changed27 schema fields changedSep 10, 2026

addedOutput schema / properties / result / anyOf

Added value: +[
+  {
+    "properties": {
+      "convertedSafes": {
+        "items": {
+          "properties": {
+            "conversionPrice": {
+              "type": "string"
+            },
+            "effectiveCap": {
+              "type": "string"
+            },
+            "effectiveDiscount": {
+              "type": "string"
+            },
+            "investorId": {
+              "anyOf": [
+                {
+                  "description": "UUID value wrapper.",
+                  "properties": {
+                    "value": {
+                      "format": "uuid",
+                      "type": "string"
+                    }
+                  },
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "method": {
+              "enum": [
+                "CAP_TABLE_CONVERSION_METHOD_UNSPECIFIED",
+                "CAP_TABLE_CONVERSION_METHOD_CAP",
+                "CAP_TABLE_CONVERSION_METHOD_DISCOUNT",
+                "CAP_TABLE_CONVERSION_METHOD_BETTER_OF_CAP",
+                "CAP_TABLE_CONVERSION_METHOD_BETTER_OF_DISCOUNT",
+                "CAP_TABLE_CONVERSION_METHOD_MFN_ADJUSTED",
+                "CAP_TABLE_CONVERSION_METHOD_ROUND_PRICE"
+              ],
+              "type": "string"
+            },
+            "name": {
+              "type": "string"
+            },
+            "ownershipPct": {
+              "type": "string"
+            },
+            "shares": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "investorId"
+          ],
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "invariantsHold": {
+        "type": "boolean"
+      },
+      "investorShares": {
+        "type": "string"
+      },
+      "optionPool": {
+        "anyOf": [
+          {
+            "properties": {
+              "netNewPoolShares": {
+                "type": "string"
+              },
+              "poolPct": {
+                "type": "string"
+              },
+              "poolShares": {
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "postMoneyValuation": {
+        "type": "string"
+      },
+      "postRoundFdsc": {
+        "type": "string"
+      },
+      "preInvestmentFdsc": {
+        "type": "string"
+      },
+      "preInvestmentShares": {
+        "type": "string"
+      },
+      "pricePerShare": {
+        "type": "string"
+      },
+      "roundId": {
+        "anyOf": [
+          {
+            "description": "UUID value wrapper.",
+            "properties": {
+              "value": {
+                "format": "uuid",
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "snapshots": {
+        "items": {
+          "properties": {
+            "conversionDilution": {
+              "type": "string"
+            },
+            "fullyDilutedShares": {
+              "type": "string"
+            },
+            "ownershipPct": {
+              "type": "string"
+            },
+            "shares": {
+              "type": "string"
+            },
+            "shuffleDilution": {
+              "type": "string"
+            },
+            "stakeholderId": {
+              "anyOf": [
+                {
+                  "description": "UUID value wrapper.",
+                  "properties": {
+                    "value": {
+                      "format": "uuid",
+                      "type": "string"
+                    }
+                  },
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "stakeholderName": {
+              "type": "string"
+            },
+            "stakeholderType": {
+              "type": "string"
+            },
+            "totalRoundDilution": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "warnings": {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      }
+    },
+    "required": [
+      "roundId"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / result / properties

Removed value: -{
-  "convertedSafes": {
-    "items": {
-      "properties": {
-        "conversionPrice": {
-          "type": "string"
-        },
-        "effectiveCap": {
-          "type": "string"
-        },
-        "effectiveDiscount": {
-          "type": "string"
-        },
-        "investorId": {
-          "description": "UUID value wrapper.",
-          "properties": {
-            "value": {
-              "format": "uuid",
-              "type": "string"
-            }
-          },
-          "type": "object"
-        },
-        "method": {
-          "enum": [
-            "CAP_TABLE_CONVERSION_METHOD_UNSPECIFIED",
-            "CAP_TABLE_CONVERSION_METHOD_CAP",
-            "CAP_TABLE_CONVERSION_METHOD_DISCOUNT",
-            "CAP_TABLE_CONVERSION_METHOD_BETTER_OF_CAP",
-            "CAP_TABLE_CONVERSION_METHOD_BETTER_OF_DISCOUNT",
-            "CAP_TABLE_CONVERSION_METHOD_MFN_ADJUSTED",
-            "CAP_TABLE_CONVERSION_METHOD_ROUND_PRICE"
-          ],
-          "type": "string"
-        },
-        "name": {
-          "type": "string"
-        },
-        "ownershipPct": {
-          "type": "string"
-        },
-        "shares": {
-          "type": "string"
-        }
-      },
-      "required": [
-        "investorId"
-      ],
-      "type": "object"
-    },
-    "type": "array"
-  },
-  "invariantsHold": {
-    "type": "boolean"
-  },
-  "investorShares": {
-    "type": "string"
-  },
-  "optionPool": {
-    "properties": {
-      "netNewPoolShares": {
-        "type": "string"
-      },
-      "poolPct": {
-        "type": "string"
-      },
-      "poolShares": {
-        "type": "string"
-      }
-    },
-    "type": "object"
-  },
-  "postMoneyValuation": {
-    "type": "string"
-  },
-  "postRoundFdsc": {
-    "type": "string"
-  },
-  "preInvestmentFdsc": {
-    "type": "string"
-  },
-  "preInvestmentShares": {
-    "type": "string"
-  },
-  "pricePerShare": {
-    "type": "string"
-  },
-  "roundId": {
-    "description": "UUID value wrapper.",
-    "properties": {
-      "value": {
-        "format": "uuid",
-        "type": "string"
-      }
-    },
-    "type": "object"
-  },
-  "snapshots": {
-    "items": {
-      "properties": {
-        "conversionDilution": {
-          "type": "string"
-        },
-        "fullyDilutedShares": {
-          "type": "string"
-        },
-        "ownershipPct": {
-          "type": "string"
-        },
-        "shares": {
-          "type": "string"
-        },
-        "shuffleDilution": {
-          "type": "string"
-        },
-        "stakeholderId": {
-          "description": "UUID value wrapper.",
-          "properties": {
-            "value": {
-              "format": "uuid",
-              "type": "string"
-            }
-          },
-          "type": "object"
-        },
-        "stakeholderName": {
-          "type": "string"
-        },
-        "stakeholderType": {
-          "type": "string"
-        },
-        "totalRoundDilution": {
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
-    "type": "array"
-  },
-  "warnings": {
-    "items": {
-      "type": "string"
-    },
-    "type": "array"
-  }
-}

removedOutput schema / properties / result / required
```
Removed value: -[
-  "roundId"
-]
```
removedOutput schema / properties / result / type
```
Removed value: -"object"
```

addedOutput schema / properties / round / anyOf

Added value: +[
+  {
+    "properties": {
+      "closedAt": {
+        "anyOf": [
+          {
+            "format": "date-time",
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "companyId": {
+        "anyOf": [
+          {
+            "description": "UUID value wrapper.",
+            "properties": {
+              "value": {
+                "format": "uuid",
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "createdAt": {
+        "anyOf": [
+          {
+            "format": "date-time",
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "fullyDilutedShares": {
+        "type": "string"
+      },
+      "id": {
+        "anyOf": [
+          {
+            "description": "UUID value wrapper.",
+            "properties": {
+              "value": {
+                "format": "uuid",
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "isPriced": {
+        "type": "boolean"
+      },
+      "name": {
+        "type": "string"
+      },
+      "optionPoolPct": {
+        "type": "string"
+      },
+      "optionPoolShares": {
+        "type": "string"
+      },
+      "postMoneyValuation": {
+        "type": "string"
+      },
+      "preMoneyValuation": {
+        "type": "string"
+      },
+      "pricePerShare": {
+        "type": "string"
+      },
+      "status": {
+        "enum": [
+          "CAP_TABLE_ROUND_STATUS_UNSPECIFIED",
+          "CAP_TABLE_ROUND_STATUS_OPEN",
+          "CAP_TABLE_ROUND_STATUS_CLOSING",
+          "CAP_TABLE_ROUND_STATUS_CLOSED"
+        ],
+        "type": "string"
+      },
+      "totalRaiseTarget": {
+        "type": "string"
+      },
+      "updatedAt": {
+        "anyOf": [
+          {
+            "format": "date-time",
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      }
+    },
+    "required": [
+      "companyId"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / round / properties

Removed value: -{
-  "closedAt": {
-    "format": "date-time",
-    "type": "string"
-  },
-  "companyId": {
-    "description": "UUID value wrapper.",
-    "properties": {
-      "value": {
-        "format": "uuid",
-        "type": "string"
-      }
-    },
-    "type": "object"
-  },
-  "createdAt": {
-    "format": "date-time",
-    "type": "string"
-  },
-  "fullyDilutedShares": {
-    "type": "string"
-  },
-  "id": {
-    "description": "UUID value wrapper.",
-    "properties": {
-      "value": {
-        "format": "uuid",
-        "type": "string"
-      }
-    },
-    "type": "object"
-  },
-  "isPriced": {
-    "type": "boolean"
-  },
-  "name": {
-    "type": "string"
-  },
-  "optionPoolPct": {
-    "type": "string"
-  },
-  "optionPoolShares": {
-    "type": "string"
-  },
-  "postMoneyValuation": {
-    "type": "string"
-  },
-  "preMoneyValuation": {
-    "type": "string"
-  },
-  "pricePerShare": {
-    "type": "string"
-  },
-  "status": {
-    "enum": [
-      "CAP_TABLE_ROUND_STATUS_UNSPECIFIED",
-      "CAP_TABLE_ROUND_STATUS_OPEN",
-      "CAP_TABLE_ROUND_STATUS_CLOSING",
-      "CAP_TABLE_ROUND_STATUS_CLOSED"
-    ],
-    "type": "string"
-  },
-  "totalRaiseTarget": {
-    "type": "string"
-  },
-  "updatedAt": {
-    "format": "date-time",
-    "type": "string"
-  }
-}

removedOutput schema / properties / round / required
```
Removed value: -[
-  "companyId"
-]
```
removedOutput schema / properties / round / type
```
Removed value: -"object"
```

addedOutput schema / properties / snapshots / items / properties / companyId / anyOf

Added value: +[
+  {
+    "description": "UUID value wrapper.",
+    "properties": {
+      "value": {
+        "format": "uuid",
+        "type": "string"
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / snapshots / items / properties / companyId / description
```
Removed value: -"UUID value wrapper."
```
removedOutput schema / properties / snapshots / items / properties / companyId / properties
```
Removed value: -{
-  "value": {
-    "format": "uuid",
-    "type": "string"
-  }
-}
```
removedOutput schema / properties / snapshots / items / properties / companyId / type
```
Removed value: -"object"
```

addedOutput schema / properties / snapshots / items / properties / createdAt / anyOf

Added value: +[
+  {
+    "format": "date-time",
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / snapshots / items / properties / createdAt / format
```
Removed value: -"date-time"
```
removedOutput schema / properties / snapshots / items / properties / createdAt / type
```
Removed value: -"string"
```

addedOutput schema / properties / snapshots / items / properties / id / anyOf

Added value: +[
+  {
+    "description": "UUID value wrapper.",
+    "properties": {
+      "value": {
+        "format": "uuid",
+        "type": "string"
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / snapshots / items / properties / id / description
```
Removed value: -"UUID value wrapper."
```

removedOutput schema / properties / snapshots / items / properties / id / properties

Removed value: -{
-  "value": {
-    "format": "uuid",
-    "type": "string"
-  }
-}

removedOutput schema / properties / snapshots / items / properties / id / type
```
Removed value: -"object"
```

addedOutput schema / properties / snapshots / items / properties / roundId / anyOf

Added value: +[
+  {
+    "description": "UUID value wrapper.",
+    "properties": {
+      "value": {
+        "format": "uuid",
+        "type": "string"
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / snapshots / items / properties / roundId / description
```
Removed value: -"UUID value wrapper."
```
removedOutput schema / properties / snapshots / items / properties / roundId / properties
```
Removed value: -{
-  "value": {
-    "format": "uuid",
-    "type": "string"
-  }
-}
```
removedOutput schema / properties / snapshots / items / properties / roundId / type
```
Removed value: -"object"
```

addedOutput schema / properties / snapshots / items / properties / stakeholderId / anyOf

Added value: +[
+  {
+    "description": "UUID value wrapper.",
+    "properties": {
+      "value": {
+        "format": "uuid",
+        "type": "string"
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / snapshots / items / properties / stakeholderId / description
```
Removed value: -"UUID value wrapper."
```
removedOutput schema / properties / snapshots / items / properties / stakeholderId / properties
```
Removed value: -{
-  "value": {
-    "format": "uuid",
-    "type": "string"
-  }
-}
```
removedOutput schema / properties / snapshots / items / properties / stakeholderId / type
```
Removed value: -"object"
```

First observedAug 11, 2026

TDQS

A4.4/5.0

Behavior5/5

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

Annotations only declare destructiveHint=true and openWorldHint=false; the description goes well beyond by disclosing that the action is irreversible ('CANNOT be undone'), writes the cap-table of record, and persists snapshots/conversions. That is exactly the behavioral context an agent needs before a destructive call.

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?

Three tightly written sentences, each earning its place: purpose/effects, trigger + irreversibility + confirm prompt, and the alternative. Front-loaded with the core action and no filler.

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 values need no explanation, and the destructive semantics are fully covered. The only gap is the undocumented optional parameters, which leaves an agent unable to reason about inputs like newMoneyRaise or preMoneyValuation.

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

Parameters2/5

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

Schema description coverage is only 25% across 8 parameters, and the description explains none of the meaningful inputs (newMoneyRaise, preMoneyValuation, targetOptionPoolPct, optionPoolBasis, recordedHistory, carryForwardUnwired). With low coverage, the description should compensate but does not, leaving most inputs undocumented.

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+resource ('CloseCapTableRound PERMANENTLY closes the round') and enumerates the concrete effects: calc engine run, SAFE conversions + ownership snapshots persisted, round flipped to CLOSED. This clearly distinguishes it from siblings like cap_table_preview_close_cap_table_round or cap_table_reopen_cap_table_round.

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 trigger phrases ('close the round', 'make it permanent', 'finalize the round') and names the alternative (PreviewCloseCapTableRound) with the exact condition that selects it. It also advises confirming with the user first, which is real usage 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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