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AstroWay Astrology API (full catalogue)

Levels of Causation

astroway_hellenistic_schmidt_levels_of_causation
Read-onlyIdempotent

Schmidt's causation tiers.

[Group: Hellenistic: Schmidt tradition] [Endpoint: POST /v1/hellenistic/schmidt/levels-of-causation] [Required: date, time, latitude, longitude] [Cost: 10 credits (Tier 1)]

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "date": "<date>",
      "time": "<time>",
      "latitude": "<latitude>",
      "longitude": "<longitude>"
    },
    "name": "astroway_hellenistic_schmidt_levels_of_causation"
  }
}

Input Schema

NameRequiredDescriptionDefault
cityNo
dateYes
nameNo
timeYes
fieldsNoCompact mode: comma-separated dotted paths to keep, relative to `data`, e.g. "planets.name,planets.longitude,houses.cusp". Omit for the whole response.
ayanamsaNoSidereal school by name. Lahiri when omitted. Equivalent to ayanamsaId; send either.
latitudeYes
timezoneNoIANA 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.
cosmogramNo
longitudeYes
precisionNoCompact mode: round fractional numbers to this many decimals. Longitudes carry 14 by default; 2 is finer than any chart is drawn.
ayanamsaIdNo
zodiacTypeNo
houseSystemNoP
timezoneOffsetNoHours 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.

Output Schema

NameRequiredDescriptionDefault
sourceNo
doctrineNo
disclaimerNo
heimarmene_fateNo
pronoia_providenceNo
sympatheia_resonanceNo
oikeiosis_familiarityNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed12 schema fields changed
    • removedInput schema / properties / ayanamsaId / anyOf
      Removed value: -[
      -  {
      -    "type": "number"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedInput schema / properties / ayanamsaId / type
      Added value: +[
      +  "number",
      +  "null"
      +]
    • removedOutput schema / properties / disclaimer / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / properties / disclaimer / type
      Added value: +[
      +  "string",
      +  "null"
      +]
    • removedOutput schema / properties / doctrine / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / properties / doctrine / type
      Added value: +[
      +  "string",
      +  "null"
      +]
    • changedOutput schema / properties / heimarmene_fate / anyOf
      Previous value: -[
      -  {
      -    "additionalProperties": {},
      -    "properties": {
      -      "meaning": {
      -        "anyOf": [
      -          {
      -            "type": "string"
      -          },
      -          {
      -            "type": "null"
      -          }
      -        ]
      -      },
      -      "rulers": {
      -        "anyOf": [
      -          {
      -            "items": {
      -              "anyOf": [
      -                {
      -                  "type": "string"
      -                },
      -                {
      -                  "type": "null"
      -                }
      -              ]
      -            },
      -            "type": "array"
      -          },
      -          {
      -            "type": "null"
      -          }
      -        ]
      -      }
      -    },
      -    "type": "object"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "additionalProperties": {},
      +    "properties": {
      +      "meaning": {
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "rulers": {
      +        "anyOf": [
      +          {
      +            "items": {
      +              "type": [
      +                "string",
      +                "null"
      +              ]
      +            },
      +            "type": "array"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ]
      +      }
      +    },
      +    "type": "object"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • changedOutput schema / properties / oikeiosis_familiarity / anyOf
      Previous value: -[
      -  {
      -    "additionalProperties": {},
      -    "properties": {
      -      "anchors": {
      -        "anyOf": [
      -          {
      -            "items": {
      -              "anyOf": [
      -                {
      -                  "type": "string"
      -                },
      -                {
      -                  "type": "null"
      -                }
      -              ]
      -            },
      -            "type": "array"
      -          },
      -          {
      -            "type": "null"
      -          }
      -        ]
      -      },
      -      "meaning": {
      -        "anyOf": [
      -          {
      -            "type": "string"
      -          },
      -          {
      -            "type": "null"
      -          }
      -        ]
      -      }
      -    },
      -    "type": "object"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "additionalProperties": {},
      +    "properties": {
      +      "anchors": {
      +        "anyOf": [
      +          {
      +            "items": {
      +              "type": [
      +                "string",
      +                "null"
      +              ]
      +            },
      +            "type": "array"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ]
      +      },
      +      "meaning": {
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      }
      +    },
      +    "type": "object"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • changedOutput schema / properties / pronoia_providence / anyOf
      Previous value: -[
      -  {
      -    "additionalProperties": {},
      -    "properties": {
      -      "meaning": {
      -        "anyOf": [
      -          {
      -            "type": "string"
      -          },
      -          {
      -            "type": "null"
      -          }
      -        ]
      -      },
      -      "rulers": {
      -        "anyOf": [
      -          {
      -            "items": {
      -              "anyOf": [
      -                {
      -                  "type": "string"
      -                },
      -                {
      -                  "type": "null"
      -                }
      -              ]
      -            },
      -            "type": "array"
      -          },
      -          {
      -            "type": "null"
      -          }
      -        ]
      -      },
      -      "sectLight": {
      -        "anyOf": [
      -          {
      -            "type": "string"
      -          },
      -          {
      -            "type": "null"
      -          }
      -        ]
      -      }
      -    },
      -    "type": "object"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "additionalProperties": {},
      +    "properties": {
      +      "meaning": {
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "rulers": {
      +        "anyOf": [
      +          {
      +            "items": {
      +              "type": [
      +                "string",
      +                "null"
      +              ]
      +            },
      +            "type": "array"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ]
      +      },
      +      "sectLight": {
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      }
      +    },
      +    "type": "object"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • removedOutput schema / properties / source / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / properties / source / type
      Added value: +[
      +  "string",
      +  "null"
      +]
    • changedOutput schema / properties / sympatheia_resonance / anyOf
      Previous value: -[
      -  {
      -    "additionalProperties": {},
      -    "properties": {
      -      "meaning": {
      -        "anyOf": [
      -          {
      -            "type": "string"
      -          },
      -          {
      -            "type": "null"
      -          }
      -        ]
      -      },
      -      "rulers": {
      -        "anyOf": [
      -          {
      -            "items": {
      -              "anyOf": [
      -                {
      -                  "type": "string"
      -                },
      -                {
      -                  "type": "null"
      -                }
      -              ]
      -            },
      -            "type": "array"
      -          },
      -          {
      -            "type": "null"
      -          }
      -        ]
      -      }
      -    },
      -    "type": "object"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "additionalProperties": {},
      +    "properties": {
      +      "meaning": {
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "rulers": {
      +        "anyOf": [
      +          {
      +            "items": {
      +              "type": [
      +                "string",
      +                "null"
      +              ]
      +            },
      +            "type": "array"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ]
      +      }
      +    },
      +    "type": "object"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
  2. First observed

TDQS

C2.1/5.0
Behavior2/5

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

The annotations already establish that this is a read-only, idempotent, non-destructive, closed-world operation. The description adds endpoint, group, required-parameter, and credit-cost metadata, but it does not explain what the causation tiers analysis actually does or what behavioral constraints apply beyond the annotation profile.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The metadata block is tightly structured and front-loaded with no filler, but the only prose is a vague fragment. It is concise to the point of being under-specified for a 15-parameter astrological calculation tool.

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

Completeness2/5

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

The tool has high complexity, 15 parameters, and many close Schmidt-tradition siblings, yet the definition omits what the analysis is, when to select it, and how it differs from alternatives. The existence of an output schema reduces the need to document return values, but the description remains far too thin for correct tool selection.

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?

The description merely repeats the four required parameters already declared in the schema, with 33% schema-description coverage across 15 parameters. It adds no meaning for the many optional parameters such as house system, zodiac type, ayanamsa, precision, or compact-field selection.

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

Purpose2/5

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

The description says only "Schmidt's causation tiers," which essentially restates the tool name and title with an author attribution. It never states what the tool computes or returns, and it does not distinguish this from the many other Schmidt-tradition sibling tools.

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?

There is no guidance on when to use this tool, when not to use it, or which sibling tool it replaces or complements. The group label identifies the astrological tradition, but that is context rather than 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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