AstroWay Vedic astrology

Dashas: Shatabdika Pratyantardasha

astroway_vedic_dashas_shatabdika_pratyantar

Read-onlyIdempotent

Shatabdika Pratyantardasha: 3-level cascade (MD → AD → 7 PDs).

[Group: Vedic] [Endpoint: POST /v1/vedic/dashas/shatabdika/pratyantar] [Cost: 20 credits (Tier 2)]

Input Schema

Name	Required	Description
`body`	Yes	Birth data for a single natal chart. Required: date (YYYY-MM-DD), time (HH:mm:ss), latitude and longitude in decimal degrees. The short forms lat, lon, lng and tz are rejected with 400 INVALID_FIELD; pass the full names. timezoneOffset is hours from UTC and defaults to 0, meaning UTC; send timezone instead (an IANA name such as Europe/Kyiv, or auto) and the offset for that date is worked out, summer time included. city is a display label only: nothing here geocodes it, so it never stands in for coordinates. houseSystem is a single house-system letter, P by default; a name such as "Placidus" is refused, and the case matters because I and i are two different Sunshine systems.
`fields`	No	Compact mode: comma-separated dotted paths to keep, relative to `data`, e.g. "planets.name,planets.longitude,houses.cusp". Omit for the whole response.
`precision`	No	Compact mode: round fractional numbers to this many decimals. Longitudes carry 14 by default; 2 is finer than any chart is drawn.

Output Schema

Name	Required	Description	Default
`level`	No
`system`	No
`initial`	No
`periods`	No
`ayanamsa`	No
`nakshatra`	No
`currentMaha`	No
`currentAntar`	No
`moonSiderealLongitude`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed14 schema fields changedNov 7, 2026

changedInput schema / properties / body / allOf

Previous value: -[
-  {
-    "additionalProperties": {
-      "anyOf": [
-        {},
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "description": "Birth data for a single natal chart. Required: date (YYYY-MM-DD), time (HH:mm:ss), latitude and longitude in decimal degrees. The short forms lat, lon, lng and tz are rejected with 400 INVALID_FIELD; pass the full names. timezoneOffset is hours from UTC and defaults to 0, meaning UTC; send timezone instead (an IANA name such as Europe/Kyiv, or auto) and the offset for that date is worked out, summer time included. city is a display label only: nothing here geocodes it, so it never stands in for coordinates. houseSystem is a single house-system letter, P by default; a name such as \"Placidus\" is refused, and the case matters because I and i are two different Sunshine systems.",
-    "properties": {
-      "ayanamsa": {
-        "description": "Sidereal school by name. Lahiri when omitted. Equivalent to ayanamsaId; send either.",
-        "enum": [
-          "fagan-bradley",
-          "lahiri",
-          "de-luce",
-          "raman",
-          "krishnamurti",
-          "kp",
-          "yukteshwar",
-          "jn-bhasin",
-          "true-citra",
-          "djwhal-khul"
-        ],
-        "type": "string"
-      },
-      "ayanamsaId": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "city": {
-        "default": "",
-        "type": "string"
-      },
-      "cosmogram": {
-        "type": "boolean"
-      },
-      "date": {
-        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-        "type": "string"
-      },
-      "houseSystem": {
-        "default": "P",
-        "enum": [
-          "P",
-          "K",
-          "R",
-          "C",
-          "E",
-          "W",
-          "B",
-          "M",
-          "O",
-          "A",
-          "T",
-          "V",
-          "D",
-          "F",
-          "G",
-          "H",
-          "I",
-          "i",
-          "L",
-          "N",
-          "Q",
-          "S",
-          "U",
-          "X",
-          "Y"
-        ],
-        "type": "string"
-      },
-      "latitude": {
-        "maximum": 90,
-        "minimum": -90,
-        "type": "number"
-      },
-      "longitude": {
-        "maximum": 180,
-        "minimum": -180,
-        "type": "number"
-      },
-      "name": {
-        "default": "",
-        "type": "string"
-      },
-      "time": {
-        "pattern": "^\\d{2}:\\d{2}(:\\d{2})?$",
-        "type": "string"
-      },
-      "timezone": {
-        "description": "IANA zone name such as Europe/Kyiv, or auto to look the zone up from latitude and longitude. The server takes the offset that zone kept at this local date and time, summer time included, and uses it in place of timezoneOffset. A clock time that happened twice takes the first occurrence; one skipped when clocks went forward takes the offset from before the change. Abbreviations such as EST are refused. Before 1970 the tz database is not reliable for every place, so send timezoneOffset when the local clock is known.",
-        "type": "string"
-      },
-      "timezoneOffset": {
-        "anyOf": [
-          {
-            "maximum": 14,
-            "minimum": -14,
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": 0,
-        "description": "Hours from UTC at the given moment, not minutes. Fractional zones are hours too: 5.5 for India, 5.75 for Nepal, -3.5 for Newfoundland. Defaults to 0, meaning UTC. Ignored when timezone is sent."
-      },
-      "zodiacType": {
-        "enum": [
-          "tropical",
-          "sidereal"
-        ],
-        "type": "string"
-      }
-    },
-    "required": [
-      "date",
-      "time",
-      "latitude",
-      "longitude"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": {
-      "anyOf": [
-        {},
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "properties": {
-      "targetDate": {
-        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-        "type": "string"
-      },
-      "targetTime": {
-        "pattern": "^\\d{2}:\\d{2}(:\\d{2})?$",
-        "type": "string"
-      },
-      "targetTzOffset": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      }
-    },
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": {
+      "anyOf": [
+        {},
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "description": "Birth data for a single natal chart. Required: date (YYYY-MM-DD), time (HH:mm:ss), latitude and longitude in decimal degrees. The short forms lat, lon, lng and tz are rejected with 400 INVALID_FIELD; pass the full names. timezoneOffset is hours from UTC and defaults to 0, meaning UTC; send timezone instead (an IANA name such as Europe/Kyiv, or auto) and the offset for that date is worked out, summer time included. city is a display label only: nothing here geocodes it, so it never stands in for coordinates. houseSystem is a single house-system letter, P by default; a name such as \"Placidus\" is refused, and the case matters because I and i are two different Sunshine systems.",
+    "properties": {
+      "ayanamsa": {
+        "description": "Sidereal school by name. Lahiri when omitted. Equivalent to ayanamsaId; send either.",
+        "enum": [
+          "fagan-bradley",
+          "lahiri",
+          "de-luce",
+          "raman",
+          "krishnamurti",
+          "kp",
+          "yukteshwar",
+          "jn-bhasin",
+          "true-citra",
+          "djwhal-khul"
+        ],
+        "type": "string"
+      },
+      "ayanamsaId": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "city": {
+        "default": "",
+        "type": "string"
+      },
+      "cosmogram": {
+        "type": "boolean"
+      },
+      "date": {
+        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+        "type": "string"
+      },
+      "houseSystem": {
+        "default": "P",
+        "enum": [
+          "P",
+          "K",
+          "R",
+          "C",
+          "E",
+          "W",
+          "B",
+          "M",
+          "O",
+          "A",
+          "T",
+          "V",
+          "D",
+          "F",
+          "G",
+          "H",
+          "I",
+          "i",
+          "L",
+          "N",
+          "Q",
+          "S",
+          "U",
+          "X",
+          "Y"
+        ],
+        "type": "string"
+      },
+      "latitude": {
+        "maximum": 90,
+        "minimum": -90,
+        "type": "number"
+      },
+      "longitude": {
+        "maximum": 180,
+        "minimum": -180,
+        "type": "number"
+      },
+      "name": {
+        "default": "",
+        "type": "string"
+      },
+      "time": {
+        "pattern": "^\\d{2}:\\d{2}(:\\d{2})?$",
+        "type": "string"
+      },
+      "timezone": {
+        "description": "IANA zone name such as Europe/Kyiv, or auto to look the zone up from latitude and longitude. The server takes the offset that zone kept at this local date and time, summer time included, and uses it in place of timezoneOffset. A clock time that happened twice takes the first occurrence; one skipped when clocks went forward takes the offset from before the change. Abbreviations such as EST are refused. Before 1970 the tz database is not reliable for every place, so send timezoneOffset when the local clock is known.",
+        "type": "string"
+      },
+      "timezoneOffset": {
+        "anyOf": [
+          {
+            "maximum": 14,
+            "minimum": -14,
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": 0,
+        "description": "Hours from UTC at the given moment, not minutes. Fractional zones are hours too: 5.5 for India, 5.75 for Nepal, -3.5 for Newfoundland. Defaults to 0, meaning UTC. Ignored when timezone is sent."
+      },
+      "zodiacType": {
+        "enum": [
+          "tropical",
+          "sidereal"
+        ],
+        "type": "string"
+      }
+    },
+    "required": [
+      "date",
+      "time",
+      "latitude",
+      "longitude"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": {
+      "anyOf": [
+        {},
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "properties": {
+      "targetDate": {
+        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+        "type": "string"
+      },
+      "targetTime": {
+        "pattern": "^\\d{2}:\\d{2}(:\\d{2})?$",
+        "type": "string"
+      },
+      "targetTzOffset": {
+        "type": [
+          "number",
+          "null"
+        ]
+      }
+    },
+    "type": "object"
+  }
+]

removedOutput schema / properties / ayanamsa / anyOf

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

addedOutput schema / properties / ayanamsa / type
```
Added value: +[
+  "number",
+  "null"
+]
```

changedOutput schema / properties / currentAntar / anyOf

Previous value: -[
-  {
-    "additionalProperties": {},
-    "properties": {
-      "durationYears": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "endDate": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "endJd": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "planet": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "planetName": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "startDate": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "startJd": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      }
-    },
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": {},
+    "properties": {
+      "durationYears": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "endDate": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "endJd": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "planet": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "planetName": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "startDate": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "startJd": {
+        "type": [
+          "number",
+          "null"
+        ]
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

changedOutput schema / properties / currentMaha / anyOf

Previous value: -[
-  {
-    "additionalProperties": {},
-    "properties": {
-      "durationYears": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "endDate": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "endJd": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "planet": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "planetName": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "startDate": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "startJd": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      }
-    },
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": {},
+    "properties": {
+      "durationYears": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "endDate": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "endJd": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "planet": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "planetName": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "startDate": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "startJd": {
+        "type": [
+          "number",
+          "null"
+        ]
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

changedOutput schema / properties / initial / anyOf

Previous value: -[
-  {
-    "additionalProperties": {},
-    "properties": {
-      "applicabilityNote": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "balanceFmt": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "balanceYears": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "cycleYears": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "elapsedYears": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "fullPeriodYears": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "initialPlanet": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "pada": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "seedNakshatra": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      }
-    },
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": {},
+    "properties": {
+      "applicabilityNote": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "balanceFmt": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "balanceYears": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "cycleYears": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "elapsedYears": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "fullPeriodYears": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "initialPlanet": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "pada": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "seedNakshatra": {
+        "type": [
+          "string",
+          "null"
+        ]
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / level / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

addedOutput schema / properties / level / type
```
Added value: +[
+  "string",
+  "null"
+]
```

removedOutput schema / properties / moonSiderealLongitude / anyOf

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

addedOutput schema / properties / moonSiderealLongitude / type
```
Added value: +[
+  "number",
+  "null"
+]
```

changedOutput schema / properties / nakshatra / anyOf

Previous value: -[
-  {
-    "additionalProperties": {},
-    "properties": {
-      "endDeg": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "name": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "nameRu": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "nameUk": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "number": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "pada": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "ruler": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "startDeg": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      }
-    },
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": {},
+    "properties": {
+      "endDeg": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "name": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "nameRu": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "nameUk": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "number": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "pada": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "ruler": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "startDeg": {
+        "type": [
+          "number",
+          "null"
+        ]
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

changedOutput schema / properties / periods / anyOf

Previous value: -[
-  {
-    "items": {
-      "anyOf": [
-        {
-          "additionalProperties": {},
-          "properties": {
-            "durationYears": {
-              "anyOf": [
-                {
-                  "type": "number"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "endDate": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "endJd": {
-              "anyOf": [
-                {
-                  "type": "number"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "planet": {
-              "anyOf": [
-                {
-                  "type": "number"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "planetName": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "startDate": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "startJd": {
-              "anyOf": [
-                {
-                  "type": "number"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            }
-          },
-          "type": "object"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "type": "array"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "items": {
+      "anyOf": [
+        {
+          "additionalProperties": {},
+          "properties": {
+            "durationYears": {
+              "type": [
+                "number",
+                "null"
+              ]
+            },
+            "endDate": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "endJd": {
+              "type": [
+                "number",
+                "null"
+              ]
+            },
+            "planet": {
+              "type": [
+                "number",
+                "null"
+              ]
+            },
+            "planetName": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "startDate": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "startJd": {
+              "type": [
+                "number",
+                "null"
+              ]
+            }
+          },
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "type": "array"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / system / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

addedOutput schema / properties / system / type
```
Added value: +[
+  "string",
+  "null"
+]
```

Changed2 schema fields changedNov 6, 2026

changedInput schema / properties / body / allOf

Previous value: -[
-  {
-    "additionalProperties": {
-      "anyOf": [
-        {},
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "description": "Birth data for a single natal chart. Required: date (YYYY-MM-DD), time (HH:mm:ss), latitude and longitude in decimal degrees. The short forms lat, lon, lng and tz are rejected with 400 INVALID_FIELD; pass the full names. timezoneOffset is hours from UTC and defaults to 0, meaning UTC; send timezone instead (an IANA name such as Europe/Kyiv, or auto) and the offset for that date is worked out, summer time included. city is a display label only: nothing here geocodes it, so it never stands in for coordinates. houseSystem is a single Swiss Ephemeris letter, P by default; a name such as \"Placidus\" is refused, and the case matters because I and i are two different Sunshine systems.",
-    "properties": {
-      "ayanamsa": {
-        "description": "Sidereal school by name. Lahiri when omitted. Equivalent to ayanamsaId; send either.",
-        "enum": [
-          "fagan-bradley",
-          "lahiri",
-          "de-luce",
-          "raman",
-          "krishnamurti",
-          "kp",
-          "yukteshwar",
-          "jn-bhasin",
-          "true-citra",
-          "djwhal-khul"
-        ],
-        "type": "string"
-      },
-      "ayanamsaId": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "city": {
-        "default": "",
-        "type": "string"
-      },
-      "cosmogram": {
-        "type": "boolean"
-      },
-      "date": {
-        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-        "type": "string"
-      },
-      "houseSystem": {
-        "default": "P",
-        "enum": [
-          "P",
-          "K",
-          "R",
-          "C",
-          "E",
-          "W",
-          "B",
-          "M",
-          "O",
-          "A",
-          "T",
-          "V",
-          "D",
-          "F",
-          "G",
-          "H",
-          "I",
-          "i",
-          "L",
-          "N",
-          "Q",
-          "S",
-          "U",
-          "X",
-          "Y"
-        ],
-        "type": "string"
-      },
-      "latitude": {
-        "maximum": 90,
-        "minimum": -90,
-        "type": "number"
-      },
-      "longitude": {
-        "maximum": 180,
-        "minimum": -180,
-        "type": "number"
-      },
-      "name": {
-        "default": "",
-        "type": "string"
-      },
-      "time": {
-        "pattern": "^\\d{2}:\\d{2}(:\\d{2})?$",
-        "type": "string"
-      },
-      "timezone": {
-        "description": "IANA zone name such as Europe/Kyiv, or auto to look the zone up from latitude and longitude. The server takes the offset that zone kept at this local date and time, summer time included, and uses it in place of timezoneOffset. A clock time that happened twice takes the first occurrence; one skipped when clocks went forward takes the offset from before the change. Abbreviations such as EST are refused. Before 1970 the tz database is not reliable for every place, so send timezoneOffset when the local clock is known.",
-        "type": "string"
-      },
-      "timezoneOffset": {
-        "anyOf": [
-          {
-            "maximum": 14,
-            "minimum": -14,
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": 0,
-        "description": "Hours from UTC at the given moment, not minutes. Fractional zones are hours too: 5.5 for India, 5.75 for Nepal, -3.5 for Newfoundland. Defaults to 0, meaning UTC. Ignored when timezone is sent."
-      },
-      "zodiacType": {
-        "enum": [
-          "tropical",
-          "sidereal"
-        ],
-        "type": "string"
-      }
-    },
-    "required": [
-      "date",
-      "time",
-      "latitude",
-      "longitude"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": {
-      "anyOf": [
-        {},
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "properties": {
-      "targetDate": {
-        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-        "type": "string"
-      },
-      "targetTime": {
-        "pattern": "^\\d{2}:\\d{2}(:\\d{2})?$",
-        "type": "string"
-      },
-      "targetTzOffset": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      }
-    },
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": {
+      "anyOf": [
+        {},
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "description": "Birth data for a single natal chart. Required: date (YYYY-MM-DD), time (HH:mm:ss), latitude and longitude in decimal degrees. The short forms lat, lon, lng and tz are rejected with 400 INVALID_FIELD; pass the full names. timezoneOffset is hours from UTC and defaults to 0, meaning UTC; send timezone instead (an IANA name such as Europe/Kyiv, or auto) and the offset for that date is worked out, summer time included. city is a display label only: nothing here geocodes it, so it never stands in for coordinates. houseSystem is a single house-system letter, P by default; a name such as \"Placidus\" is refused, and the case matters because I and i are two different Sunshine systems.",
+    "properties": {
+      "ayanamsa": {
+        "description": "Sidereal school by name. Lahiri when omitted. Equivalent to ayanamsaId; send either.",
+        "enum": [
+          "fagan-bradley",
+          "lahiri",
+          "de-luce",
+          "raman",
+          "krishnamurti",
+          "kp",
+          "yukteshwar",
+          "jn-bhasin",
+          "true-citra",
+          "djwhal-khul"
+        ],
+        "type": "string"
+      },
+      "ayanamsaId": {
+        "anyOf": [
+          {
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "city": {
+        "default": "",
+        "type": "string"
+      },
+      "cosmogram": {
+        "type": "boolean"
+      },
+      "date": {
+        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+        "type": "string"
+      },
+      "houseSystem": {
+        "default": "P",
+        "enum": [
+          "P",
+          "K",
+          "R",
+          "C",
+          "E",
+          "W",
+          "B",
+          "M",
+          "O",
+          "A",
+          "T",
+          "V",
+          "D",
+          "F",
+          "G",
+          "H",
+          "I",
+          "i",
+          "L",
+          "N",
+          "Q",
+          "S",
+          "U",
+          "X",
+          "Y"
+        ],
+        "type": "string"
+      },
+      "latitude": {
+        "maximum": 90,
+        "minimum": -90,
+        "type": "number"
+      },
+      "longitude": {
+        "maximum": 180,
+        "minimum": -180,
+        "type": "number"
+      },
+      "name": {
+        "default": "",
+        "type": "string"
+      },
+      "time": {
+        "pattern": "^\\d{2}:\\d{2}(:\\d{2})?$",
+        "type": "string"
+      },
+      "timezone": {
+        "description": "IANA zone name such as Europe/Kyiv, or auto to look the zone up from latitude and longitude. The server takes the offset that zone kept at this local date and time, summer time included, and uses it in place of timezoneOffset. A clock time that happened twice takes the first occurrence; one skipped when clocks went forward takes the offset from before the change. Abbreviations such as EST are refused. Before 1970 the tz database is not reliable for every place, so send timezoneOffset when the local clock is known.",
+        "type": "string"
+      },
+      "timezoneOffset": {
+        "anyOf": [
+          {
+            "maximum": 14,
+            "minimum": -14,
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": 0,
+        "description": "Hours from UTC at the given moment, not minutes. Fractional zones are hours too: 5.5 for India, 5.75 for Nepal, -3.5 for Newfoundland. Defaults to 0, meaning UTC. Ignored when timezone is sent."
+      },
+      "zodiacType": {
+        "enum": [
+          "tropical",
+          "sidereal"
+        ],
+        "type": "string"
+      }
+    },
+    "required": [
+      "date",
+      "time",
+      "latitude",
+      "longitude"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": {
+      "anyOf": [
+        {},
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "properties": {
+      "targetDate": {
+        "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+        "type": "string"
+      },
+      "targetTime": {
+        "pattern": "^\\d{2}:\\d{2}(:\\d{2})?$",
+        "type": "string"
+      },
+      "targetTzOffset": {
+        "anyOf": [
+          {
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      }
+    },
+    "type": "object"
+  }
+]

changedInput schema / properties / body / description

Previous value: -"Birth data for a single natal chart. Required: date (YYYY-MM-DD), time (HH:mm:ss), latitude and longitude in decimal degrees. The short forms lat, lon, lng and tz are rejected with 400 INVALID_FIELD; pass the full names. timezoneOffset is hours from UTC and defaults to 0, meaning UTC; send timezone instead (an IANA name such as Europe/Kyiv, or auto) and the offset for that date is worked out, summer time included. city is a display label only: nothing here geocodes it, so it never stands in for coordinates. houseSystem is a single Swiss Ephemeris letter, P by default; a name such as \"Placidus\" is refused, and the case matters because I and i are two different Sunshine systems."New value: +"Birth data for a single natal chart. Required: date (YYYY-MM-DD), time (HH:mm:ss), latitude and longitude in decimal degrees. The short forms lat, lon, lng and tz are rejected with 400 INVALID_FIELD; pass the full names. timezoneOffset is hours from UTC and defaults to 0, meaning UTC; send timezone instead (an IANA name such as Europe/Kyiv, or auto) and the offset for that date is worked out, summer time included. city is a display label only: nothing here geocodes it, so it never stands in for coordinates. houseSystem is a single house-system letter, P by default; a name such as \"Placidus\" is refused, and the case matters because I and i are two different Sunshine systems."

First observedOct 5, 2026

TDQS

C2.9/5.0

Behavior3/5

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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so safety is fully covered. The description adds one genuinely useful behavioral fact – the 20-credit Tier 2 cost, which affects whether an agent should call it or a cheaper sibling – plus endpoint/group metadata that is not actionable for an agent. It says nothing about latency, auth, or computation determinism beyond the annotations.

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?

A single front-loaded sentence plus a compact metadata block; nothing is padded or restated. The terse form is efficient, though the single sentence arguably undersells a 3-parameter tool with a large nested birth-data body.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a 20-credit computation endpoint whose body requires full birth data, the description conveys only the cascade depth and cost. An output schema exists so return values needn't be described, but the role of targetDate/targetTime for selecting a pratyantar period is left entirely to inference, which is a meaningful gap for correct invocation.

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 the embedded body schema is unusually explicit about coordinates, short-form rejection, timezone vs timezoneOffset and houseSystem casing, so the schema carries the parameter burden. The description adds no parameter meaning of its own, and notably the nested targetDate/targetTime fields carry no schema description and are not explained here either. Baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose3/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description names the specific dasha system and level ("Shatabdika Pratyantardasha") and quantifies the cascade ("3-level cascade (MD → AD → 7 PDs)"), which helps separate it from the maha/antar/sookshma/prana siblings. But there is no verb at all – nothing says the tool computes or returns a dasha table for a natal chart – so an agent must infer the operation from the tool name alone.

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

Usage Guidelines2/5

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

No when-to-use guidance exists: the description never says when to pick pratyantar over shatabdika_antar (2-level) or shatabdika_prana/sookshma, nor what question each depth answers. Only the bracketed endpoint and cost metadata are present, which is inventory data, not 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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