AstroWay Astrology API (full catalogue)

Best places for a life category

astroway_geo_acg_best_places

Read-onlyIdempotent

Rank cities against the astrocartography lines of a chart for one of the 19 life categories. Distance to a line is computed from the body hour angle and altitude rather than against a discretised polyline, so it is exact: the distance to a horizon line IS the altitude in degrees of arc, and a meridian line offset is the hour angle times cos(latitude). Supportive and challenging totals are returned separately with every contributing line and its distance, so a strong-but-turbulent city is distinguishable from an average one. Bundled GeoNames set of 34,028 places above 15,000 people.

[Group: Astro-Geography] [Endpoint: POST /v1/acg/best-places] [Cost: 50 credits (Tier 3)]

Input Schema

Name	Required	Description
`body`	Yes	Birth data plus a life category. Birth coordinates are optional and unused for the ranking: astrocartography lines are a property of the birth moment, not of the birth place.
`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
`pool`	No
`sort`	No
`type`	No
`count`	No
`orbKm`	No
`places`	No
`dataset`	No
`category`	No
`attribution`	No
`minSeparationKm`	No
`suppressedAsTooClose`	No
`maxPossibleSupportive`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed20 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": {
-      "category": {
-        "description": "One of the 19 ACG life categories. The list is at GET /v1/acg/categories.",
-        "type": "string"
-      },
-      "countries": {
-        "description": "ISO 3166-1 alpha-2 codes to restrict the search to. Omit to search the whole bundled list.",
-        "items": {
-          "maxLength": 2,
-          "minLength": 2,
-          "type": "string"
-        },
-        "maxItems": 50,
-        "type": "array"
-      },
-      "limit": {
-        "description": "How many cities to return. Default 25.",
-        "maximum": 100,
-        "minimum": 1,
-        "type": "integer"
-      },
-      "minPopulation": {
-        "description": "Floor on city population. The bundled set starts at 15000, so a lower value changes nothing.",
-        "maximum": 9007199254740991,
-        "minimum": 15000,
-        "type": "integer"
-      },
-      "minSeparationKm": {
-        "anyOf": [
-          {
-            "maximum": 5000,
-            "minimum": 0,
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "Keep returned cities at least this far apart, kilometres. Default 300. An ACG line is a curve, so without thinning the top of the ranking is the densest stretch of one line rather than a set of places. Set 0 to disable and see every city in score order."
-      },
-      "orbKm": {
-        "description": "How far a line reaches, kilometres. Default 1126, which is the 700 miles Jim Lewis used.",
-        "maximum": 3000,
-        "minimum": 100,
-        "type": "number"
-      },
-      "sort": {
-        "description": "`net` (default) ranks on supportive minus challenging. `supportive` ignores the challenging side when ordering, though it is still reported.",
-        "enum": [
-          "net",
-          "supportive"
-        ],
-        "type": "string"
-      }
-    },
-    "required": [
-      "category"
-    ],
-    "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": {
+      "category": {
+        "description": "One of the 19 ACG life categories. The list is at GET /v1/acg/categories.",
+        "type": "string"
+      },
+      "countries": {
+        "description": "ISO 3166-1 alpha-2 codes to restrict the search to. Omit to search the whole bundled list.",
+        "items": {
+          "maxLength": 2,
+          "minLength": 2,
+          "type": "string"
+        },
+        "maxItems": 50,
+        "type": "array"
+      },
+      "limit": {
+        "description": "How many cities to return. Default 25.",
+        "maximum": 100,
+        "minimum": 1,
+        "type": "integer"
+      },
+      "minPopulation": {
+        "description": "Floor on city population. The bundled set starts at 15000, so a lower value changes nothing.",
+        "maximum": 9007199254740991,
+        "minimum": 15000,
+        "type": "integer"
+      },
+      "minSeparationKm": {
+        "anyOf": [
+          {
+            "maximum": 5000,
+            "minimum": 0,
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "Keep returned cities at least this far apart, kilometres. Default 300. An ACG line is a curve, so without thinning the top of the ranking is the densest stretch of one line rather than a set of places. Set 0 to disable and see every city in score order."
+      },
+      "orbKm": {
+        "description": "How far a line reaches, kilometres. Default 1126, which is the 700 miles Jim Lewis used.",
+        "maximum": 3000,
+        "minimum": 100,
+        "type": "number"
+      },
+      "sort": {
+        "description": "`net` (default) ranks on supportive minus challenging. `supportive` ignores the challenging side when ordering, though it is still reported.",
+        "enum": [
+          "net",
+          "supportive"
+        ],
+        "type": "string"
+      }
+    },
+    "required": [
+      "category"
+    ],
+    "type": "object"
+  }
+]

changedOutput schema / properties / attribution / anyOf

Previous value: -[
-  {
-    "additionalProperties": {},
-    "properties": {
-      "licence": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "licenceUrl": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "notice": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "source": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "sourceUrl": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      }
-    },
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": {},
+    "properties": {
+      "licence": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "licenceUrl": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "notice": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "source": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "sourceUrl": {
+        "type": [
+          "string",
+          "null"
+        ]
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

changedOutput schema / properties / category / anyOf

Previous value: -[
-  {
-    "additionalProperties": {},
-    "properties": {
-      "description": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "id": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "language": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "lines": {
-        "anyOf": [
-          {
-            "items": {
-              "anyOf": [
-                {
-                  "additionalProperties": {},
-                  "properties": {
-                    "angle": {
-                      "anyOf": [
-                        {
-                          "type": "string"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    },
-                    "planet": {
-                      "anyOf": [
-                        {
-                          "type": "string"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    },
-                    "planetId": {
-                      "anyOf": [
-                        {
-                          "type": "number"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    },
-                    "polarity": {
-                      "anyOf": [
-                        {
-                          "type": "string"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    },
-                    "weight": {
-                      "anyOf": [
-                        {
-                          "type": "number"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    }
-                  },
-                  "type": "object"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "type": "array"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "name": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      }
-    },
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": {},
+    "properties": {
+      "description": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "id": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "language": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "lines": {
+        "anyOf": [
+          {
+            "items": {
+              "anyOf": [
+                {
+                  "additionalProperties": {},
+                  "properties": {
+                    "angle": {
+                      "type": [
+                        "string",
+                        "null"
+                      ]
+                    },
+                    "planet": {
+                      "type": [
+                        "string",
+                        "null"
+                      ]
+                    },
+                    "planetId": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "polarity": {
+                      "type": [
+                        "string",
+                        "null"
+                      ]
+                    },
+                    "weight": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    }
+                  },
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "type": "array"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "name": {
+        "type": [
+          "string",
+          "null"
+        ]
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / count / anyOf

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

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

changedOutput schema / properties / dataset / anyOf

Previous value: -[
-  {
-    "additionalProperties": {},
-    "properties": {
-      "count": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "downloaded": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "licence": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "note": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "source": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "url": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      }
-    },
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": {},
+    "properties": {
+      "count": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "downloaded": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "licence": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "note": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "source": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "url": {
+        "type": [
+          "string",
+          "null"
+        ]
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / maxPossibleSupportive / anyOf

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

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

removedOutput schema / properties / minSeparationKm / anyOf

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

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

removedOutput schema / properties / orbKm / anyOf

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

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

changedOutput schema / properties / places / anyOf

Previous value: -[
-  {
-    "items": {
-      "anyOf": [
-        {
-          "additionalProperties": {},
-          "properties": {
-            "admin1Code": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "challenging": {
-              "anyOf": [
-                {
-                  "type": "number"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "country": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "countryCode": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "lat": {
-              "anyOf": [
-                {
-                  "type": "number"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "lines": {
-              "anyOf": [
-                {
-                  "items": {
-                    "anyOf": [
-                      {
-                        "additionalProperties": {},
-                        "properties": {
-                          "angle": {
-                            "anyOf": [
-                              {
-                                "type": "string"
-                              },
-                              {
-                                "type": "null"
-                              }
-                            ]
-                          },
-                          "contribution": {
-                            "anyOf": [
-                              {
-                                "type": "number"
-                              },
-                              {
-                                "type": "null"
-                              }
-                            ]
-                          },
-                          "distanceKm": {
-                            "anyOf": [
-                              {
-                                "type": "number"
-                              },
-                              {
-                                "type": "null"
-                              }
-                            ]
-                          },
-                          "planetId": {
-                            "anyOf": [
-                              {
-                                "type": "number"
-                              },
-                              {
-                                "type": "null"
-                              }
-                            ]
-                          },
-                          "planetName": {
-                            "anyOf": [
-                              {
-                                "type": "string"
-                              },
-                              {
-                                "type": "null"
-                              }
-                            ]
-                          },
-                          "polarity": {
-                            "anyOf": [
-                              {
-                                "type": "string"
-                              },
-                              {
-                                "type": "null"
-                              }
-                            ]
-                          },
-                          "weight": {
-                            "anyOf": [
-                              {
-                                "type": "number"
-                              },
-                              {
-                                "type": "null"
-                              }
-                            ]
-                          }
-                        },
-                        "type": "object"
-                      },
-                      {
-                        "type": "null"
-                      }
-                    ]
-                  },
-                  "type": "array"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "lon": {
-              "anyOf": [
-                {
-                  "type": "number"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "name": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "net": {
-              "anyOf": [
-                {
-                  "type": "number"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "population": {
-              "anyOf": [
-                {
-                  "type": "number"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "supportive": {
-              "anyOf": [
-                {
-                  "type": "number"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "supportivePercent": {
-              "anyOf": [
-                {
-                  "type": "number"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "timezone": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            }
-          },
-          "type": "object"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "type": "array"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "items": {
+      "anyOf": [
+        {
+          "additionalProperties": {},
+          "properties": {
+            "admin1Code": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "challenging": {
+              "type": [
+                "number",
+                "null"
+              ]
+            },
+            "country": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "countryCode": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "lat": {
+              "type": [
+                "number",
+                "null"
+              ]
+            },
+            "lines": {
+              "anyOf": [
+                {
+                  "items": {
+                    "anyOf": [
+                      {
+                        "additionalProperties": {},
+                        "properties": {
+                          "angle": {
+                            "type": [
+                              "string",
+                              "null"
+                            ]
+                          },
+                          "contribution": {
+                            "type": [
+                              "number",
+                              "null"
+                            ]
+                          },
+                          "distanceKm": {
+                            "type": [
+                              "number",
+                              "null"
+                            ]
+                          },
+                          "planetId": {
+                            "type": [
+                              "number",
+                              "null"
+                            ]
+                          },
+                          "planetName": {
+                            "type": [
+                              "string",
+                              "null"
+                            ]
+                          },
+                          "polarity": {
+                            "type": [
+                              "string",
+                              "null"
+                            ]
+                          },
+                          "weight": {
+                            "type": [
+                              "number",
+                              "null"
+                            ]
+                          }
+                        },
+                        "type": "object"
+                      },
+                      {
+                        "type": "null"
+                      }
+                    ]
+                  },
+                  "type": "array"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "lon": {
+              "type": [
+                "number",
+                "null"
+              ]
+            },
+            "name": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "net": {
+              "type": [
+                "number",
+                "null"
+              ]
+            },
+            "population": {
+              "type": [
+                "number",
+                "null"
+              ]
+            },
+            "supportive": {
+              "type": [
+                "number",
+                "null"
+              ]
+            },
+            "supportivePercent": {
+              "type": [
+                "number",
+                "null"
+              ]
+            },
+            "timezone": {
+              "type": [
+                "string",
+                "null"
+              ]
+            }
+          },
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "type": "array"
+  },
+  {
+    "type": "null"
+  }
+]

changedOutput schema / properties / pool / anyOf

Previous value: -[
-  {
-    "additionalProperties": {},
-    "properties": {
-      "citiesConsidered": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "citiesWithAnyLine": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "countries": {
-        "anyOf": [
-          {
-            "items": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "type": "array"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "minPopulation": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      }
-    },
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": {},
+    "properties": {
+      "citiesConsidered": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "citiesWithAnyLine": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "countries": {
+        "anyOf": [
+          {
+            "items": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "type": "array"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "minPopulation": {
+        "type": [
+          "number",
+          "null"
+        ]
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / sort / anyOf

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

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

removedOutput schema / properties / suppressedAsTooClose / anyOf

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

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

removedOutput schema / properties / type / anyOf

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

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

Changed1 schema field 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": {
-      "category": {
-        "description": "One of the 19 ACG life categories. The list is at GET /v1/acg/categories.",
-        "type": "string"
-      },
-      "countries": {
-        "description": "ISO 3166-1 alpha-2 codes to restrict the search to. Omit to search the whole bundled list.",
-        "items": {
-          "maxLength": 2,
-          "minLength": 2,
-          "type": "string"
-        },
-        "maxItems": 50,
-        "type": "array"
-      },
-      "limit": {
-        "description": "How many cities to return. Default 25.",
-        "maximum": 100,
-        "minimum": 1,
-        "type": "integer"
-      },
-      "minPopulation": {
-        "description": "Floor on city population. The bundled set starts at 15000, so a lower value changes nothing.",
-        "maximum": 9007199254740991,
-        "minimum": 15000,
-        "type": "integer"
-      },
-      "minSeparationKm": {
-        "anyOf": [
-          {
-            "maximum": 5000,
-            "minimum": 0,
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "Keep returned cities at least this far apart, kilometres. Default 300. An ACG line is a curve, so without thinning the top of the ranking is the densest stretch of one line rather than a set of places. Set 0 to disable and see every city in score order."
-      },
-      "orbKm": {
-        "description": "How far a line reaches, kilometres. Default 1126, which is the 700 miles Jim Lewis used.",
-        "maximum": 3000,
-        "minimum": 100,
-        "type": "number"
-      },
-      "sort": {
-        "description": "`net` (default) ranks on supportive minus challenging. `supportive` ignores the challenging side when ordering, though it is still reported.",
-        "enum": [
-          "net",
-          "supportive"
-        ],
-        "type": "string"
-      }
-    },
-    "required": [
-      "category"
-    ],
-    "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": {
+      "category": {
+        "description": "One of the 19 ACG life categories. The list is at GET /v1/acg/categories.",
+        "type": "string"
+      },
+      "countries": {
+        "description": "ISO 3166-1 alpha-2 codes to restrict the search to. Omit to search the whole bundled list.",
+        "items": {
+          "maxLength": 2,
+          "minLength": 2,
+          "type": "string"
+        },
+        "maxItems": 50,
+        "type": "array"
+      },
+      "limit": {
+        "description": "How many cities to return. Default 25.",
+        "maximum": 100,
+        "minimum": 1,
+        "type": "integer"
+      },
+      "minPopulation": {
+        "description": "Floor on city population. The bundled set starts at 15000, so a lower value changes nothing.",
+        "maximum": 9007199254740991,
+        "minimum": 15000,
+        "type": "integer"
+      },
+      "minSeparationKm": {
+        "anyOf": [
+          {
+            "maximum": 5000,
+            "minimum": 0,
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "Keep returned cities at least this far apart, kilometres. Default 300. An ACG line is a curve, so without thinning the top of the ranking is the densest stretch of one line rather than a set of places. Set 0 to disable and see every city in score order."
+      },
+      "orbKm": {
+        "description": "How far a line reaches, kilometres. Default 1126, which is the 700 miles Jim Lewis used.",
+        "maximum": 3000,
+        "minimum": 100,
+        "type": "number"
+      },
+      "sort": {
+        "description": "`net` (default) ranks on supportive minus challenging. `supportive` ignores the challenging side when ordering, though it is still reported.",
+        "enum": [
+          "net",
+          "supportive"
+        ],
+        "type": "string"
+      }
+    },
+    "required": [
+      "category"
+    ],
+    "type": "object"
+  }
+]

First observedOct 5, 2026

TDQS

A3.8/5.0

Behavior4/5

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

Annotations already declare readOnly, idempotent, non-destructive and closed-world, so the safety profile is covered. Beyond that, the description discloses genuinely useful behaviour: distances are computed exactly from hour angle and altitude rather than a discretised polyline, supportive and challenging totals are reported separately per contributing line, and the search corpus is a bundled set of 34,028 places over 15,000 people.

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?

The purpose and dataset are front-loaded in the first and last sentences, with the methodology sandwiched between. The geometric justification (altitude equals distance, hour angle times cos latitude) is somewhat dense technical colour, but it does earn its place by justifying the tool's accuracy claim rather than merely padding.

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?

With an output schema present and near-total schema description coverage, the description need not document returns or parameters, and it supplements well with data corpus size, cost tier, and ranking semantics. The one remaining gap is sibling differentiation within the crowded astroway_geo_* ACG family.

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

Parameters4/5

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

Schema coverage is 100%, so the baseline is 3, but the description adds interpretive meaning: the 'one of 19 life categories' framing anchors the required category parameter, and the explanation of separate supportive/challenging totals clarifies what the net versus supportive sort ordering actually compares.

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

Purpose4/5

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

"Rank cities against the astrocartography lines of a chart for one of the 19 life categories" gives a concrete verb (rank), resource (cities vs ACG lines) and scope (19 categories). It is clear on its own, but it never contrasts itself with close siblings such as astroway_geo_acg or astroway_geo_acg_by_category, so the agent must infer the boundary.

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?

The use case is implied (find best places for a life category), and the mention of separate supportive/challenging totals hints that this tool suits nuanced 'strong but turbulent' judgments. However, there is no explicit when-to-use, when-not-to-use, or named alternative among the several geo sibling endpoints, leaving routing to inference.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

All AstroWay Astrology API (full catalogue) tools Inspect

Try in Browser

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Glama MCP Gateway

Add one secure layer between your agents and this server.

Resources

Need Help?