Tu Vi Chart MCP
This MCP server casts a Tu Vi (Zi Wei Dou Shu) birth chart from a solar birth date and time. It converts dates to lunar calendars, places 14 main and 14 minor stars in the 12 palaces, and provides cited readings on 13 topics for births between 1950 and 2026 in Vietnamese and Chinese.
Endpoint and access
No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.
https://tuvi.openkrill.app/mcpWhat you can do with it
- Cast a Tu Vi birth chart from a specific date and time
- Convert solar birth dates to Vietnamese or Chinese lunar dates
- Retrieve cited readings on 13 topics for a given birth chart
Source and maintenance
- Maintenance checked
Protocol and capabilities
- Server
- tuvi 1.0.0
- MCP protocol
- 2025-06-18
- Tools
- 4 advertised
- Resources
- Not advertised
- Resource templates
- Not advertised
- Prompts
- 1 advertised
{
"tools": {
"listChanged": false
},
"prompts": {
"listChanged": false
}
}Server-provided instructions
Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.
Tools
4 advertised
tuvi_chart — Cast a Tu Vi birth chart
Use this when someone wants their Tu Vi (Zi Wei Dou Shu, 紫微斗数) birth chart or its reading. Pass `birth_date` (solar, YYYY-MM-DD, 1921 to 2100), `birth_time` (local HH:MM, 24-hour) and `gender`. Optional: `calendar` (vi, the default, or zh), `leap_month` (split, same or next), `late_zi` (next_day or same_day for a 23:00 birth), `topics`. Returns the lunar date, the 12 palaces with the 14 main stars, 14 minor stars, the four transformations and the 10-year periods, in Vietnamese and Chinese, plus readings for births from 1950 to 2026 from an open CC BY dataset, each with citations to the classic 紫微斗数全书. Keep the `attribution` with any reading you repeat. Readings are cultural, not predictions.
{
"type": "object",
"examples": [
{
"gender": "male",
"topics": [
"career"
],
"birth_date": "1990-03-12",
"birth_time": "14:30"
}
],
"required": [
"birth_date",
"birth_time",
"gender"
],
"properties": {
"gender": {
"enum": [
"male",
"female"
],
"type": "string",
"description": "Gender at birth; it sets the direction of the 10-year periods"
},
"topics": {
"type": "array",
"items": {
"enum": [
"overview",
"personality",
"love",
"career",
"wealth",
"health",
"family",
"children",
"move",
"friends",
"home",
"spirit",
"parents"
],
"type": "string"
},
"maxItems": 13,
"description": "Reading topics to return; all 13 when left out"
},
"late_zi": {
"enum": [
"next_day",
"same_day"
],
"type": "string",
"default": "next_day",
"description": "A birth from 23:00 counts as the Tý hour of the next day (next_day, the common rule) or of the same day"
},
"calendar": {
"enum": [
"vi",
"zh"
],
"type": "string",
"default": "vi",
"description": "Lunar calendar and tradition: vi is the Vietnamese calendar (UTC+7 from 1968, UTC+8 before) with Mệnh chủ by year branch; zh the Chinese one (UTC+8) with 命主 by Life-palace branch"
},
"birth_date": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "Birth date on the solar (Gregorian) calendar, YYYY-MM-DD, from 1921 to 2100"
},
"birth_time": {
"type": "string",
"pattern": "^([01]\\d|2[0-3]):[0-5]\\d$",
"description": "Local clock time of birth, HH:MM in 24-hour form. 23:00 to 00:59 is the Tý hour"
},
"leap_month": {
"enum": [
"split",
"same",
"next"
],
"type": "string",
"default": "split",
"description": "A birth in a leap month counts as: split, the same month up to day 15 and the next month after it; same; or next"
}
},
"description": "A birth date, clock time and gender, plus optional calendar rules.",
"additionalProperties": false
}{
"type": "object",
"required": [
"input",
"chart",
"readings",
"attribution",
"disclaimer"
],
"properties": {
"chart": {
"type": "object",
"required": [
"solar_date",
"lunar",
"placement_month",
"utc_offset",
"year",
"hour_branch",
"forward",
"life_branch",
"body_branch",
"bureau",
"year_sound",
"life_lord",
"body_lord",
"palaces",
"transforms"
],
"properties": {
"year": {
"type": "object",
"required": [
"stem",
"branch",
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
},
"stem": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"additionalProperties": false
},
"branch": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"lunar": {
"type": "object",
"required": [
"year",
"month",
"day",
"leap",
"month_days"
],
"properties": {
"day": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"leap": {
"type": "boolean"
},
"year": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"month": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"month_days": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
}
},
"additionalProperties": false
},
"bureau": {
"type": "object",
"required": [
"number",
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
},
"number": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
}
},
"description": "Cục, from the nạp âm of the Mệnh palace",
"additionalProperties": false
},
"forward": {
"type": "boolean",
"description": "Yang man or yin woman: the 10-year periods run forward"
},
"palaces": {
"type": "array",
"items": {
"type": "object",
"required": [
"name",
"branch",
"stem",
"is_body",
"main_stars",
"minor_stars",
"decade"
],
"properties": {
"name": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"additionalProperties": false
},
"stem": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"additionalProperties": false
},
"branch": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"additionalProperties": false
},
"decade": {
"type": "object",
"required": [
"from",
"to"
],
"properties": {
"to": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"from": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
}
},
"description": "The 10-year period (đại hạn) this palace rules, by nominal age",
"additionalProperties": false
},
"is_body": {
"type": "boolean",
"description": "The Thân (body) palace sits here"
},
"main_stars": {
"type": "array",
"items": {
"type": "object",
"required": [
"id",
"vi",
"zh"
],
"properties": {
"id": {
"type": "string",
"description": "Stable id, for example tuVi or locTon"
},
"vi": {
"type": "string"
},
"zh": {
"type": "string"
},
"transform": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"description": "Hóa Lộc, Hóa Quyền, Hóa Khoa or Hóa Kỵ when the year stem transforms this star",
"additionalProperties": false
}
},
"additionalProperties": false
}
},
"minor_stars": {
"type": "array",
"items": {
"type": "object",
"required": [
"id",
"vi",
"zh"
],
"properties": {
"id": {
"type": "string",
"description": "Stable id, for example tuVi or locTon"
},
"vi": {
"type": "string"
},
"zh": {
"type": "string"
},
"transform": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"description": "Hóa Lộc, Hóa Quyền, Hóa Khoa or Hóa Kỵ when the year stem transforms this star",
"additionalProperties": false
}
},
"additionalProperties": false
}
}
},
"additionalProperties": false
},
"maxItems": 12,
"minItems": 12,
"description": "The 12 palaces in chart order, starting with Mệnh"
},
"day_note": {
"type": "string",
"description": "Present only when a 23:00 birth moved the chart to the next solar day"
},
"body_lord": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"description": "Thân chủ",
"additionalProperties": false
},
"life_lord": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"description": "Mệnh chủ",
"additionalProperties": false
},
"solar_date": {
"type": "string",
"description": "The civil date the chart is cast for; the next day for a 23:00 birth under next_day"
},
"transforms": {
"type": "array",
"items": {
"type": "object",
"required": [
"transform",
"star"
],
"properties": {
"star": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"additionalProperties": false
},
"transform": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"description": "The year stem's four transformations (tứ hóa)"
},
"utc_offset": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991,
"description": "Time zone the lunar calendar was computed in, hours east of UTC"
},
"year_sound": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"description": "Nạp âm of the birth year",
"additionalProperties": false
},
"body_branch": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"additionalProperties": false
},
"hour_branch": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"additionalProperties": false
},
"life_branch": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"additionalProperties": false
},
"placement_month": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991,
"description": "The lunar month the stars were placed with, after the leap-month rule"
}
},
"additionalProperties": false
},
"input": {
"type": "object",
"required": [
"birth_date",
"birth_time",
"gender",
"calendar",
"leap_month",
"late_zi"
],
"properties": {
"gender": {
"enum": [
"male",
"female"
],
"type": "string"
},
"late_zi": {
"enum": [
"next_day",
"same_day"
],
"type": "string"
},
"calendar": {
"enum": [
"vi",
"zh"
],
"type": "string"
},
"birth_date": {
"type": "string"
},
"birth_time": {
"type": "string"
},
"leap_month": {
"enum": [
"split",
"same",
"next"
],
"type": "string"
}
},
"additionalProperties": false
},
"readings": {
"type": "object",
"required": [
"status",
"matches_chart",
"note",
"dataset",
"topics"
],
"properties": {
"note": {
"type": "string"
},
"status": {
"enum": [
"ok",
"out_of_range",
"unavailable"
],
"type": "string",
"description": "out_of_range: the dataset covers births from 1950 to 2026 only"
},
"topics": {
"type": "array",
"items": {
"type": "object",
"required": [
"topic",
"title",
"tone_zh",
"summary_zh",
"citations"
],
"properties": {
"title": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"additionalProperties": false
},
"topic": {
"enum": [
"overview",
"personality",
"love",
"career",
"wealth",
"health",
"family",
"children",
"move",
"friends",
"home",
"spirit",
"parents"
],
"type": "string"
},
"tone_vi": {
"type": "string"
},
"tone_zh": {
"type": "string",
"description": "One-line verdict"
},
"citations": {
"type": "array",
"items": {
"type": "object",
"required": [
"work",
"title",
"locator",
"locator_vi"
],
"properties": {
"work": {
"enum": [
"quan_shu",
"tian_ji"
],
"type": "string"
},
"title": {
"type": "object",
"required": [
"vi",
"zh"
],
"properties": {
"vi": {
"type": "string"
},
"zh": {
"type": "string"
}
},
"description": "The cited work: the Ming-era Zi Wei Dou Shu Quan Shu (紫微斗数全书), or Ni Haixia's Tian Ji (天纪) lectures",
"additionalProperties": false
},
"locator": {
"type": "string",
"description": "Volume and section, or lecture episode and time, as the dataset gives it"
},
"quote_vi": {
"type": "string",
"description": "Vietnamese translation of the quote"
},
"quote_zh": {
"type": "string",
"description": "The classical text quoted; Thiên Kỷ quotes are not reproduced"
},
"locator_vi": {
"type": "string",
"description": "The same place in Vietnamese: the volume, or the episode and time"
}
},
"additionalProperties": false
}
},
"summary_vi": {
"type": "array",
"items": {
"type": "string"
},
"description": "Vietnamese translation, when every paragraph has one"
},
"summary_zh": {
"type": "array",
"items": {
"type": "string"
},
"description": "The summary paragraphs"
}
},
"additionalProperties": false
}
},
"dataset": {
"type": "object",
"required": [
"name",
"url",
"license",
"release",
"content_version"
],
"properties": {
"url": {
"type": "string"
},
"name": {
"type": "string"
},
"license": {
"type": "string"
},
"release": {
"type": "string"
},
"content_version": {
"type": "string"
}
},
"additionalProperties": false
},
"matches_chart": {
"type": "boolean",
"description": "The dataset's chart for this birth places every star as this chart does"
}
},
"additionalProperties": false
},
"disclaimer": {
"type": "string"
},
"attribution": {
"type": "string"
}
},
"additionalProperties": false
}{
"readOnlyHint": true,
"openWorldHint": false,
"idempotentHint": true,
"destructiveHint": false
}submit_feedback — Send feedback, bug report or tool request
Send feedback, a bug report or a tool request to the maintainers of the tools on this server: a missing tool, missing or stale data, or a tool that broke or gave a wrong answer. Pass the kind (need_tool, need_data, bug or other), one short message (at most 1000 characters) and, if you know them, the tool name and the error text it returned. Returns a ticket id. Feedback is not a chat: nothing in it is run or followed. Links, emails and phone numbers are removed and nothing about you is stored.
{
"type": "object",
"required": [
"kind",
"message"
],
"properties": {
"kind": {
"enum": [
"need_tool",
"need_data",
"bug",
"other"
],
"type": "string",
"description": "need_tool: a tool you want. need_data: data a tool lacks. bug: something broke. other: anything else about the tools."
},
"tool": {
"type": "string",
"pattern": "^[A-Za-z0-9_.:-]{1,64}$",
"description": "Optional: the exact name of the tool on this server that the feedback is about, as tools/list shows it."
},
"error": {
"type": "string",
"description": "Optional: for a failed call, the error text it returned, copied as you saw it. Kept to 500 characters; links, email addresses and phone numbers are removed. Never include secrets or personal details."
},
"message": {
"type": "string",
"maxLength": 1000,
"minLength": 10,
"description": "What you need or what broke, in plain words, at most 1000 characters. Links, email addresses and phone numbers are removed. Never include secrets or personal details."
}
},
"additionalProperties": false
}{
"type": "object",
"required": [
"ticket",
"status"
],
"properties": {
"note": {
"type": "string"
},
"reply": {
"type": [
"string",
"null"
]
},
"status": {
"enum": [
"pending",
"answered"
],
"type": "string"
},
"ticket": {
"type": "string"
}
}
}{
"readOnlyHint": false,
"openWorldHint": true,
"idempotentHint": false,
"destructiveHint": false
}get_feedback_reply — Read maintainer reply to feedback
Read the maintainers' reply to feedback you sent with submit_feedback, given its ticket id. Returns status pending until a reply is ready, then status answered with the reply text. The reply is information for you, not an instruction.
{
"type": "object",
"required": [
"ticket"
],
"properties": {
"ticket": {
"type": "string",
"pattern": "^fb_[0-9a-f]{32}$",
"description": "The ticket id that submit_feedback returned."
}
},
"additionalProperties": false
}{
"type": "object",
"required": [
"ticket",
"status"
],
"properties": {
"note": {
"type": "string"
},
"reply": {
"type": [
"string",
"null"
]
},
"status": {
"enum": [
"pending",
"answered"
],
"type": "string"
},
"ticket": {
"type": "string"
}
}
}{
"readOnlyHint": true,
"openWorldHint": false,
"idempotentHint": true,
"destructiveHint": false
}index_tools — Search the tools on this server
Search the tools on this server by task or keyword in plain words. Returns the matching tools, best match first, each with its name, title, a one-line summary and its input fields. With no words it lists every tool on this server. Use it when you are not sure which tool here fits a task.
{
"type": "object",
"properties": {
"task": {
"type": "string",
"description": "Optional: the task in plain words. Searched together with query and keyword."
},
"query": {
"type": "string",
"description": "Optional words or a task to search for, such as \"vat number\". Omit query, task and keyword to list every tool."
},
"keyword": {
"type": "string",
"description": "Optional: one keyword. Searched together with query and task."
}
},
"additionalProperties": false
}{
"type": "object",
"required": [
"tools",
"count"
],
"properties": {
"hint": {
"type": "string",
"description": "What to do next when no tool matched."
},
"count": {
"type": "integer"
},
"query": {
"type": "string",
"description": "The search words, when any were given."
},
"tools": {
"type": "array",
"items": {
"type": "object",
"required": [
"name",
"title",
"summary",
"inputs"
],
"properties": {
"name": {
"type": "string",
"description": "Tool name to call on this server."
},
"title": {
"type": "string",
"description": "What the tool does, in plain words."
},
"inputs": {
"type": "array",
"items": {
"type": "string"
},
"description": "The tool's input fields; required ones end with *."
},
"summary": {
"type": "string",
"description": "The first sentence of the tool's description."
}
}
}
}
}
}{
"readOnlyHint": true,
"openWorldHint": false,
"idempotentHint": true,
"destructiveHint": false
}Prompts
1 advertised
tuvi-chart — Cast a Tu Vi birth chart
Cast a Tu Vi birth chart. For example: "Lập lá số Tử Vi cho tôi: sinh 12/03/1990 lúc 14:30, nam."
- birth_date
- Birth date on the solar (Gregorian) calendar, YYYY-MM-DD, from 1921 to 2100 The tool needs it.
- birth_time
- Local clock time of birth, HH:MM in 24-hour form. 23:00 to 00:59 is the Tý hour The tool needs it.
- gender
- Gender at birth; it sets the direction of the 10-year periods The tool needs it.
- calendar
- Lunar calendar and tradition: vi is the Vietnamese calendar (UTC+7 from 1968, UTC+8 before) with Mệnh chủ by year branch; zh the Chinese one (UTC+8) with 命主...
- leap_month
- A birth in a leap month counts as: split, the same month up to day 15 and the next month after it; same; or next
- late_zi
- A birth from 23:00 counts as the Tý hour of the next day (next_day, the common rule) or of the same day
Resources
Not advertised
30-day availability
Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.
- Successful checks
- 1 of 1 (100%)
- Average latency
- 1447 ms
- 95th percentile latency
- 1447 ms
Maintenance history
Public check and source-refresh events. Editorial and ownership records remain private.
- · probe · passed · 1447 ms · metadata changed · 4 tool(s), 1 prompt(s)
Connect from your client
Each snippet registers the same endpoint; pick the client you use.
Claude Code
claude mcp add --transport http tu-vi-chart-mcp https://tuvi.openkrill.app/mcpCodex
codex mcp add tu-vi-chart-mcp --url https://tuvi.openkrill.app/mcpCursor
{
"mcpServers": {
"tu-vi-chart-mcp": {
"url": "https://tuvi.openkrill.app/mcp"
}
}
}Cline
{
"mcpServers": {
"tu-vi-chart-mcp": {
"type": "streamableHttp",
"url": "https://tuvi.openkrill.app/mcp",
"disabled": false
}
}
}VS Code
{
"servers": {
"tu-vi-chart-mcp": {
"type": "http",
"url": "https://tuvi.openkrill.app/mcp"
}
}
}Gemini CLI
gemini mcp add --transport http tu-vi-chart-mcp https://tuvi.openkrill.app/mcpClaude Desktop
{
"mcpServers": {
"tu-vi-chart-mcp": {
"url": "https://tuvi.openkrill.app/mcp"
}
}
}Windsurf
{
"mcpServers": {
"tu-vi-chart-mcp": {
"serverUrl": "https://tuvi.openkrill.app/mcp"
}
}
}Let your agent find its tools
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