AstroWay Vedic astrology

Dashas: Dwadashottari Antardasha

astroway_vedic_dashas_dwadashottari_antar

Read-onlyIdempotent

Dwadashottari Antardasha: the 8 sub-periods of the running period at targetDate, 2 levels deep, split in proportion to the lords' years from the period's own lord. Inside the birth mahadasha the split follows the full period from its notional start: sub-periods that ended before birth are left out and the running one starts at birth.

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

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": {
      "body": "<body>"
    },
    "name": "astroway_vedic_dashas_dwadashottari_antar"
  }
}

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
`moonSiderealLongitude`	No

Schema Changelog

Changes observed during successful MCP inspections.

AddedNov 7, 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, so safety is covered; the description goes further by explaining the proportional split by the lords' years, that the split is measured from the period's own lord, and the birth-mahadasha edge case where pre-birth sub-periods are dropped and the running one starts at birth. It also discloses the 20-credit Tier 2 cost, which is real invocation context.

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?

Two dense sentences with the purpose front-loaded, followed by the proportional-split rule and the birth edge case, then bracketed metadata. Nothing is filler, though the second sentence is grammatically tangled and takes a re-read to parse.

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

Completeness5/5

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

An output schema exists, so return values need not be described, and the annotations cover the safety profile. What remains an agent actually needs — which period is resolved, how the sub-periods are sized, and how birth truncation works — is all present.

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 coverage is 100%, so `date`, `time`, `latitude`, `longitude`, `targetDate`, `fields` and `precision` are all documented in the schema itself. The description adds only that `targetDate` selects the running period whose sub-periods are returned; it says nothing about `targetTime`/`targetTzOffset` interaction. Baseline 3 is appropriate when the schema carries the parameter load.

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?

The description states a specific verb-and-resource pair: it returns the 8 sub-periods of the running Dwadashottari period at `targetDate`, two levels deep. That is concrete enough to distinguish it from the maha (one level) and pratyantar/sookshma/prana (deeper) siblings, though it never names those siblings explicitly as alternatives.

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?

Usage is only implied by 'the 8 sub-periods of the running period at `targetDate`, 2 levels deep' — an agent can infer this is the second-level dasha, but nothing states when to pick this over astroway_vedic_dashas_dwadashottari_maha or _pratyantar, and no prerequisites are spelled out.

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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