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puru991

Kundlit Vedic Astrology

Birth details (nakshatra, rashi, lagna, navamsa lagna)

get_birth_details
Read-onlyIdempotent

Retrieve janma nakshatra, rashi, lagna, and navamsa from a birth chart. Answers common single questions about nakshatra, moon sign, and ascendant.

Instructions

Returns just the identity fields of a Vedic birth chart: the Moon's janma nakshatra (birth star) with its 1-27 number and pada, the janma rashi (moon sign) with its classical lord and the house it occupies, the lagna (ascendant) with degree in sign, nakshatra, pada and lord, and the navamsa (D9) lagna with its lord. Use this for the common single questions -- 'what is my nakshatra / rashi / lagna' -- and to fetch janma_nakshatra and janma_rashi values that get_muhurta_timings accepts. It returns NO planet table, no yogas and no dasha: for those call get_janam_kundali (whole chart) or get_dasha_periods (dasha only). Read-only deterministic computation (Swiss Ephemeris, Lahiri ayanamsa, whole-sign houses); no writes, no auth. Rate limits are counted per server instance: at least 30 requests/min/IP on this endpoint, plus a shared engine budget of at least 60/min/IP across all birth-chart tools.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
placeNoPlace as free text, "City, State, Country" -- e.g. "Jaipur, Rajasthan, India". Preferred input: it is geocoded to coordinates and an IANA timezone server-side, and any city worldwide works. Omit only if you pass latitude + longitude + timezone instead.
latitudeNoLatitude in decimal degrees, -90 to 90, north positive (Delhi = 28.6139). Use only when `place` is omitted, and then longitude and timezone are required too.
timezoneNoIANA timezone name, e.g. "Asia/Kolkata" or "America/New_York" (never an offset like "+05:30"). Required when latitude/longitude are used; ignored when `place` is given.
longitudeNoLongitude in decimal degrees, -180 to 180, east positive (Delhi = 77.2090). Use only when `place` is omitted.
birth_dateYesBirth date in the Gregorian calendar as YYYY-MM-DD, e.g. 1992-03-14. Years 1200-2400 only, and it must be a real calendar date (2023-02-29 is rejected).
birth_timeYesBirth time on the local clock at the birth place, HH:MM in 24-hour format (00:00-23:59), e.g. 06:45 or 18:20. Not UTC. Required and not defaulted: the ascendant moves about one degree every four minutes, so a guessed time gives a guessed chart.
Behavior5/5

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

Adds significant context beyond annotations: deterministic computation using Swiss Ephemeris, Lahiri ayanamsa, whole-sign houses; no writes, no auth; rate limits per server instance. Annotations already declare readOnly and idempotent, but description enriches understanding.

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

Conciseness5/5

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

Single well-structured paragraph, front-loaded with returns, then usage, then limitations, then behavioral notes. Every sentence earns its place, no redundancy.

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?

Thorough explanation of all 6 parameters, despite no output schema. Covers parameter dependencies (place vs lat/lng/timezone), purpose, limitations, rate limits, and sibling tool comparisons. Complete for a read-only deterministic tool.

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%, baseline 3. Description adds extra meaning: explains place format, clarifies that birth_time is local clock not UTC, explains alternative for latitude/longitude/timezone use, and validates dates. Adds moderate value beyond schema.

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

Purpose5/5

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

Description explicitly states it returns identity fields of Vedic birth chart (nakshatra, rashi, lagna, navamsa lagna) and contrasts with sibling tools like get_janam_kundali which include planet tables. Clear verb+resource with sibling differentiation.

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

Usage Guidelines5/5

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

Explicitly states when to use: 'common single questions' and 'to fetch values that get_muhurta_timings accepts'. Also states when NOT to use: for planet table, yogas, dashas, and names alternatives (get_janam_kundali, get_dasha_periods).

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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