Vedic Astrology and Kundli MCP Server by RoxyAPI

Get Hora - 24 Planetary Hours (12 day + 12 night)

post_vedic_astrology_panchang_hora

Read-only

Calculate all 24 Hora (planetary hour) periods for any date and location. Day is divided into 12 equal horas from sunrise to sunset, night into 12 equal horas from sunset to next sunrise. Each hora is ruled by a planet in the Chaldean sequence starting from the day lord. Hora timings API, planetary hours calculator, Vedic hora chart, electional astrology timing.

Input Schema

TableJSON Schema

Name	Required	Description
`date`	Yes	Date in YYYY-MM-DD format. A single-digit month or day is accepted and zero-padded (2026-3-5 becomes 2026-03-05). Impossible calendar dates are rejected.
`compact`	No	Set true for the same data in a compact shape: arrays of same-shaped objects arrive columnar as {"__cols":[names],"__rows":[[values]]}. Lossless, typically 40 to 52 percent fewer tokens.
`latitude`	Yes	Observer latitude in decimal degrees. Determines sunrise and sunset times which define day/night boundaries for muhurta calculations.
`timezone`	No	Timezone: an IANA name (e.g. "America/New_York", "Europe/London", or `cities[0].timezone` from /location/search) or decimal hours from UTC (e.g. -5 for EST, 5.5 for IST). An IANA name is resolved to the offset in force at the given date and time. Used for accurate sunrise/sunset calculation and output time formatting. Essential for correct Hora periods outside IST. Defaults to 5.5 (IST).
`longitude`	Yes	Observer longitude in decimal degrees. Affects local time calculations for sunrise, sunset, and muhurta period boundaries.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`date`	Yes
`dayHoras`	Yes
`nightHoras`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedSep 23, 2026

changedInput schema / properties / timezone / description

Previous value: -"Timezone offset from UTC in decimal hours. Used for accurate sunrise/sunset calculation and output time formatting. Essential for correct Hora periods outside IST. Defaults to 5.5 (IST)."New value: +"Timezone: an IANA name (e.g. \"America/New_York\", \"Europe/London\", or `cities[0].timezone` from /location/search) or decimal hours from UTC (e.g. -5 for EST, 5.5 for IST). An IANA name is resolved to the offset in force at the given date and time. Used for accurate sunrise/sunset calculation and output time formatting. Essential for correct Hora periods outside IST. Defaults to 5.5 (IST)."

Changed1 schema field changedSep 20, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "date": {
+      "type": "string"
+    },
+    "dayHoras": {
+      "items": {
+        "properties": {
+          "end": {
+            "type": "string"
+          },
+          "number": {
+            "type": "number"
+          },
+          "planet": {
+            "type": "string"
+          },
+          "start": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "planet",
+          "number",
+          "start",
+          "end"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "nightHoras": {
+      "items": {
+        "properties": {
+          "end": {
+            "type": "string"
+          },
+          "number": {
+            "type": "number"
+          },
+          "planet": {
+            "type": "string"
+          },
+          "start": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "planet",
+          "number",
+          "start",
+          "end"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    }
+  },
+  "required": [
+    "date",
+    "dayHoras",
+    "nightHoras"
+  ],
+  "type": "object"
+}

Changed2 schema fields changedAug 17, 2026

addedInput schema / examples

Added value: +[
+  {
+    "date": "2026-02-03",
+    "latitude": 17.385044,
+    "longitude": 78.486671
+  }
+]

changedInput schema / properties / compact / description

Previous value: -"Set true to receive the exact same data in a token-optimized shape that is cheaper for you to read: whitespace is stripped and every array of same-shaped objects is encoded columnar as {\"__cols\":[field names],\"__rows\":[[values]]}, so each field name is sent once instead of once per row. Fully lossless (no field or value is dropped or changed) and typically 40 to 52 percent fewer tokens on large results. Prefer true whenever token or inference cost matters. Default false returns standard indented JSON."New value: +"Set true for the same data in a compact shape: arrays of same-shaped objects arrive columnar as {\"__cols\":[names],\"__rows\":[[values]]}. Lossless, typically 40 to 52 percent fewer tokens."

Changed1 schema field changedJul 22, 2026

changedInput schema / properties / compact / description

Previous value: -"Return the same data in a token-optimized compact shape (minified, with same-shaped arrays encoded columnar) to reduce LLM token cost. Lossless: no fields are dropped. Default false."New value: +"Set true to receive the exact same data in a token-optimized shape that is cheaper for you to read: whitespace is stripped and every array of same-shaped objects is encoded columnar as {\"__cols\":[field names],\"__rows\":[[values]]}, so each field name is sent once instead of once per row. Fully lossless (no field or value is dropped or changed) and typically 40 to 52 percent fewer tokens on large results. Prefer true whenever token or inference cost matters. Default false returns standard indented JSON."

Changed1 schema field changedJul 22, 2026

addedInput schema / properties / compact

Added value: +{
+  "default": false,
+  "description": "Return the same data in a token-optimized compact shape (minified, with same-shaped arrays encoded columnar) to reduce LLM token cost. Lossless: no fields are dropped. Default false.",
+  "type": "boolean"
+}

Changed1 schema field changedJul 12, 2026

changedInput schema / properties / timezone / anyOf

Previous value: -[
-  {
-    "maximum": 14,
-    "minimum": -14,
-    "type": "number"
-  },
-  {
-    "pattern": "^[A-Za-z_]+(?:\\/[A-Za-z0-9_+-]+){0,2}$",
-    "type": "string"
-  }
-]New value: +[
+  {
+    "maximum": 14,
+    "minimum": -14,
+    "type": "number"
+  },
+  {
+    "type": "string"
+  }
+]

First observedJul 8, 2026

TDQS

B3.4/5.0

Behavior4/5

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

The description goes beyond the readOnlyHint/destructiveHint annotations by specifying the computational model: 12 equal day horas from sunrise to sunset, 12 night horas from sunset to next sunrise, and planets ruled in Chaldean order starting from the day lord. This tells the agent what behavior to expect (pure calculation over a date/location) without contradicting 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.

Conciseness3/5

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

The first three sentences are front-loaded and information-dense, but the final comma-separated keyword phrase ('Hora timings API, planetary hours calculator, Vedic hora chart, electional astrology timing') is non-functional filler. Because one of the four content units does not earn its place, a 3 is appropriate.

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 all five parameters documented in the input schema, the description does not need to cover return shapes. It supplies the essential conceptual context (what a Hora is, how boundaries are set, how rulers are assigned) so an agent can invoke and interpret the tool. The only notable gap, choosing this over sibling electional tools, is already scored under usage guidelines.

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 the baseline is 3; the schema already documents date format, timezone resolution, and coordinate meaning. The description adds only the general 'date and location' framing and the sunrise/sunset dependency already present in the parameter descriptions, so it does not elevate above baseline.

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?

Description opens with a specific verb and resource: 'Calculate all 24 Hora (planetary hour) periods for any date and location.' It explains the day/night division and Chaldean rulership, so a caller can tell exactly what the tool computes. It does not, however, explicitly differentiate from nearby sibling panchang/choghadiya tools, so it earns a 4 rather than 5.

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, exclusions, or alternatives are given. The closing keyword 'electional astrology timing' hints at the use case, but the description never says when to prefer this over panchang_choghadiya or panchang_detailed, and there is no mention of prerequisites or context. This is effectively no 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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