Asterwise

Gochar

asterwise_get_gochar

Read-onlyIdempotent

Computes Gochar against the natal Moon and Lagna and returns per-planet transit longitudes, houses, AVK scores, vedha flags, and a roll-up summary.

WORKFLOW: BEFORE: RECOMMENDED — asterwise_get_natal_chart — anchors what "natal" means for the same birth record. AFTER: asterwise_get_dasha_transits — adds dasha-lord correlation for today.

INPUT CONTRACT: target_date (string, optional — YYYY-MM-DD): date to compute transits for; defaults to today if omitted. BirthData follows the global contract. Birth time is required: this tool has no sunrise fallback. If the user doesn't know it, say so rather than guessing; never pass time='00:00' for unknown.

DO NOT CONFUSE WITH: asterwise_get_transits — ingress and station tables for a chosen date window, not a single-day Gochar snapshot. asterwise_get_dasha_transits — scores how transits meet active dasha lords, not the full nine-planet Gochar row set.

Full output and error contract: https://docs.asterwise.com/mcp/tools/get-gochar/

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": {
      "birth": "<birth>"
    },
    "name": "asterwise_get_gochar"
  }
}

Input Schema

Name	Required	Description	Default
`birth`	Yes	Birth data for tools that need the exact birth time (no sunrise fallback).
`target_date`	No	Date to compute transits for, YYYY-MM-DD (at 12:00 India time). Defaults to today in India (Asia/Kolkata).
`response_format`	No	Output format: 'markdown' (default) for a readable report, or 'json' for the raw structured payload.	markdown

Output Schema

Name	Required	Description	Default
`result`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 10, 2026

changedInput schema / properties / target_date / description

Previous value: -"Date in YYYY-MM-DD format. Defaults to today when omitted."New value: +"Date to compute transits for, YYYY-MM-DD (at 12:00 India time). Defaults to today in India (Asia/Kolkata)."

Changed1 schema field changedOct 6, 2026

changedInput schema / properties / birth / description

Previous value: -"Birth data for tools that need the exact birth time.\n\nTheir API endpoints have no sunrise fallback and reject a request without\na time, so the time is required here instead of failing upstream."New value: +"Birth data for tools that need the exact birth time (no sunrise fallback)."

Changed7 schema fields changedOct 6, 2026

changedInput schema / properties / birth / description

Previous value: -"Birth data for a single person."New value: +"Birth data for tools that need the exact birth time.\n\nTheir API endpoints have no sunrise fallback and reject a request without\na time, so the time is required here instead of failing upstream."

removedInput schema / properties / birth / properties / time / anyOf

Removed value: -[
-  {
-    "pattern": "^\\d{2}:\\d{2}$",
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

removedInput schema / properties / birth / properties / time / default
```
Removed value: -null
```

changedInput schema / properties / birth / properties / time / description

Previous value: -"Birth time HH:MM (24h), e.g. '06:45'. Omit if unknown (a sunrise chart is used and birth_time_provided=false); never pass '00:00' for unknown."New value: +"Birth time HH:MM (24h), e.g. '06:45'. Required: this tool has no sunrise fallback. If the user doesn't know it, say so rather than guessing; never pass '00:00' for unknown."

addedInput schema / properties / birth / properties / time / pattern
```
Added value: +"^\\d{2}:\\d{2}$"
```
addedInput schema / properties / birth / properties / time / type
```
Added value: +"string"
```

changedInput schema / properties / birth / required

Previous value: -[
-  "date",
-  "lat",
-  "lon"
-]New value: +[
+  "date",
+  "time",
+  "lat",
+  "lon"
+]

Changed2 schema fields changedSep 5, 2026

addedInput schema / properties / response_format / description

Added value: +"Output format: 'markdown' (default) for a readable report, or 'json' for the raw structured payload."

addedInput schema / properties / target_date / description

Added value: +"Date in YYYY-MM-DD format. Defaults to today when omitted."

Changed8 schema fields changedSep 4, 2026

changedInput schema / properties / birth / properties / date / description

Previous value: -"Birth date in YYYY-MM-DD format. Example: '1985-11-12'"New value: +"Birth date YYYY-MM-DD."

changedInput schema / properties / birth / properties / lat / description

Previous value: -"Birth latitude in decimal degrees. North positive, south negative. Example: 19.0760 for Mumbai, -33.8688 for Sydney"New value: +"Latitude in decimal degrees, north positive (Mumbai 19.076)."

changedInput schema / properties / birth / properties / lon / description

Previous value: -"Birth longitude in decimal degrees. East positive, west negative. Example: 72.8777 for Mumbai, -74.0060 for New York"New value: +"Longitude in decimal degrees, east positive (Mumbai 72.8777)."

changedInput schema / properties / birth / properties / person_name / description

Previous value: -"Name of the person for this chart. Example: 'Arjun Mehta'"New value: +"Person's name, used in labels only."

changedInput schema / properties / birth / properties / time / description

Previous value: -"Birth time in HH:MM 24-hour format. Example: '06:45'. Omit entirely if the birth time is unknown: a sunrise chart is used and birth_time_provided returns false. Do not pass '00:00' for an unknown time, it is treated as a real midnight birth and returns a confidently wrong ascendant."New value: +"Birth time HH:MM (24h), e.g. '06:45'. Omit if unknown (a sunrise chart is used and birth_time_provided=false); never pass '00:00' for unknown."

changedInput schema / properties / birth / properties / timezone / description

Previous value: -"IANA timezone for the birth location. Examples: 'Asia/Kolkata' (India), 'America/New_York' (New York), 'Europe/London' (London), 'Asia/Tokyo' (Japan), 'America/Los_Angeles' (Los Angeles), 'Europe/Paris' (Paris), 'Asia/Dubai' (Dubai), 'Asia/Singapore' (Singapore), 'America/Chicago' (Chicago), 'Australia/Sydney' (Sydney). Default: Asia/Kolkata"New value: +"IANA timezone of the birth place, e.g. 'Asia/Kolkata', 'America/New_York', 'Europe/London'. Default: Asia/Kolkata"

addedInput schema / properties / response_format / default
```
Added value: +"markdown"
```

changedInput schema / required

Previous value: -[
-  "birth",
-  "response_format"
-]New value: +[
+  "birth"
+]

Changed6 schema fields changedJul 25, 2026

addedInput schema / properties / birth / properties / time / anyOf

Added value: +[
+  {
+    "pattern": "^\\d{2}:\\d{2}$",
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]

addedInput schema / properties / birth / properties / time / default
```
Added value: +null
```

changedInput schema / properties / birth / properties / time / description

Previous value: -"Birth time in HH:MM format (24-hour). Example: '06:45'. Use '00:00' if unknown."New value: +"Birth time in HH:MM 24-hour format. Example: '06:45'. Omit entirely if the birth time is unknown: a sunrise chart is used and birth_time_provided returns false. Do not pass '00:00' for an unknown time, it is treated as a real midnight birth and returns a confidently wrong ascendant."

removedInput schema / properties / birth / properties / time / pattern
```
Removed value: -"^\\d{2}:\\d{2}$"
```
removedInput schema / properties / birth / properties / time / type
```
Removed value: -"string"
```

changedInput schema / properties / birth / required

Previous value: -[
-  "date",
-  "time",
-  "lat",
-  "lon"
-]New value: +[
+  "date",
+  "lat",
+  "lon"
+]

First observedApr 22, 2026

TDQS

A4.6/5.0

Behavior4/5

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

Annotations already declare readOnly/idempotent/non-destructive, and the description adds real operational context beyond them: no sunrise fallback for missing birth time, an instruction not to guess or pass '00:00', and the fact that target_date is evaluated at 12:00 India time. It stops short of describing error surfaces beyond pointing at an external contract URL.

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?

Front-loads the purpose, then uses labeled blocks (WORKFLOW, INPUT CONTRACT, DO NOT CONFUSE WITH) so an agent can scan to the relevant section. Dense but every block carries routing or constraint information; the trailing doc link is the only mild padding.

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?

Given an output schema exists, the description need not explain return values, yet it does summarize them. Combined with the input contract, defaults, sibling disambiguation, and workflow ordering, an agent has everything needed to select and call this tool correctly.

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 description coverage is 100%, so the baseline is 3; the description goes slightly beyond by framing the input contract (target_date optional and defaulted, birth time mandatory with no fallback path) rather than merely repeating field names. It does not add format or validation detail beyond what the schema already encodes.

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?

States a specific verb and resource ('Computes Gochar against the natal Moon and Lagna') and enumerates the output payload (longitudes, houses, AVK scores, vedha flags, roll-up summary). The DO NOT CONFUSE WITH block explicitly separates it from asterwise_get_transits and asterwise_get_dasha_transits.

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?

Provides an explicit BEFORE/AFTER workflow chain (natal chart first, dasha transits after) and names both alternatives with the condition that distinguishes them ('ingress and station tables for a chosen date window' vs 'single-day Gochar snapshot'). Prerequisites are also stated: birth time is required and there is no sunrise fallback.

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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