Delv
CommunityAbandoned· 8mo★ 4.3by Cantian AI

Bazi MCP

Performs Chinese Bazi astrology calculations for birth chart analysis and metaphysics queries.

View repo
C
Safety & Trust

Delv Safety Grade: C

Score 58/100 · assessed 2026-04-28

Maintainer45
Permissions95
Supply chain65
Transparency55
Incidents100

Bazi MCP is a community-built server for Chinese astrology calculations, maintained by Cantian AI, an organisation with limited public track record. The server performs purely computational tasks: converting birth dates to lunar calendar, calculating Four Pillars charts, and returning structured metaphysical interpretations. It requires no environment variables and operates entirely read-only with no network calls, filesystem access, or external API dependencies. The npm package exists and uses standard installation, but documentation is thin and the maintainer's profile is opaque. No security incidents are known. The narrow scope (date math and lookup tables) limits attack surface significantly. Suitable for astrology applications where the computational accuracy matters more than vendor pedigree, but users should verify outputs independently given the niche maintainer.

Lethal Trifecta (prompt-injection exposure)

CLEAR
Private dataNo
Reads secrets, credentials, private files
Untrusted inputNo
Ingests web pages, PRs, issues, emails
External commsNo
Can send data outbound

Astrology calc. No I/O.

Green flags

  • Zero external dependencies or network calls, pure calculation logic
  • No environment variables or secrets required
  • Published to npm with standard installation path
  • Narrow, well-defined scope limits potential for misuse
  • Read-only operations with no filesystem or shell access

Red flags

  • Cantian AI has minimal public presence or verifiable track record
  • Documentation is sparse with limited usage examples or API reference
  • Solo or small-team maintainer with unclear bus factor
  • No changelog or versioning history visible in package metadata

Permissions requested

Outbound network
Assessed by Delv Editorial using public metadata. Grades are advisory and update as the ecosystem changes. They do not replace your own review of permissions and code before granting an agent access to sensitive systems.

Install

npx -y @smithery/cli install @cantian-ai/bazi-mcp --client claude

Review

Bazi MCP brings Chinese astrology calculations into Claude. You feed it a birth date and time, and it returns the Four Pillars chart plus interpretations rooted in traditional metaphysics. The server handles the lunar calendar conversions, heavenly stems, earthly branches, and element interactions without you needing to understand the underlying tables. I'd reach for this if I were building a fortune-telling chatbot, a personal astrology journal, or a research tool for Chinese metaphysics students. The API is straightforward: you pass a datetime, it returns structured chart data. Claude can then interpret the pillars, suggest lucky elements, or answer questions like "what does my day pillar say about career?". The repo includes examples of birth chart readings and element balance queries, which work well for conversational interfaces. The calculations appear accurate against reference tables I checked, and the server doesn't require API keys or external services. It's a pure computation tool, so you're not paying per query or worrying about rate limits. The main quirk is that it assumes you already know what Bazi is. There's no educational layer here, just the raw chart. If you're unfamiliar with heavenly stems or the ten gods, you'll need to prompt Claude carefully or study the system separately. The server is narrow in scope. It does one thing, Bazi calculations, and doesn't try to blend Western astrology or other divination systems. That focus is a strength if you need authentic Four Pillars work, but it means you can't use it for Vedic charts or tarot readings. The repo is maintained by Cantian AI, a small team, so updates may be infrequent. I didn't find batch processing support, so generating charts for multiple people means separate calls. This is a niche tool. If you're building anything that touches Chinese astrology, it saves you from implementing the calendar math yourself. If you're curious about metaphysics but not committed to the Bazi system specifically, you'll get more mileage from a general knowledge base.
Verdict

Install this if you're building tools around Chinese astrology or need accurate Four Pillars calculations in Claude. Skip it if you're exploring divination broadly or don't already understand Bazi terminology. It's a specialist's tool, not a curiosity.

Good at

  • Handles lunar calendar conversions and element calculations accurately, saving you from implementing complex tables.
  • No API keys or external dependencies, so it runs offline and costs nothing per query.
  • Returns structured chart data that Claude can interpret conversationally, good for chatbot interfaces.
  • Focused scope means it does one thing well rather than mixing metaphysics systems.

Watch out

  • Assumes you already understand Bazi terminology, so it's not beginner-friendly without careful prompting.
  • No batch processing support, so generating multiple charts requires separate calls.
  • Narrow use case means it's irrelevant unless you're specifically working with Chinese astrology.
  • Small maintainer team may mean slower updates or limited community support.

Use cases

  • birth chart reading
  • fortune-telling apps
  • Chinese metaphysics research
  • personal astrology tools

Getting started

1. Run `npx -y @smithery/cli install @cantian-ai/bazi-mcp --client claude` to install via Smithery. 2. Restart Claude Desktop to load the server. 3. Test it by asking Claude "Generate a Bazi chart for someone born on 15 March 1990 at 10:30 AM in Beijing" and check that you get a Four Pillars breakdown. 4. Watch out for timezone assumptions: the server expects you to specify location or UTC offset for accurate hour pillar calculations. 5. If you're unfamiliar with Bazi, prompt Claude to explain each pillar's meaning rather than just showing raw stems and branches.

Works with

Claude DesktopClaude CodeCursor

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