In-depth architectural comparison of the Horoscope and Bazi MCP MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.
At a Glance & Executive Verdict
Horoscope
Spirituality & Esoterica · Local stdio
Quality: 52/100 (Good) | Auth: No auth required
Bazi MCP
Spirituality & Esoterica · Local stdio
Quality: 68/100 (Great) | Auth: No auth required
Verdict Summary: Choose Horoscope if you need specialized Spirituality & Esoterica tools running via a local process. Choose Bazi MCP if your workspace requires Spirituality & Esoterica integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.
Which MCP Server Should You Choose?
Choose Horoscope when:
You need dedicated capabilities in the Spirituality & Esoterica domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Horoscope MCP — wraps the keyless Horoscope App API.
Deterministic Bazi / Four Pillars MCP server with True Solar Time, lunar/solar conversion, Da Yun luck cycles, branch interactions, reverse Bazi lookup, and OpenFate calculation metadata. Install: npx -y @openfate/bazi-mcp.
Get the daily horoscope for a zodiac sign. Returns the prediction text for a given day (today, tomorrow, yesterday, or a specific YYYY-MM-DD date). Useful for "what is my horoscope today" style questions.
weekly_horoscope
Get the weekly horoscope for a zodiac sign. Returns the prediction text covering the current week.
monthly_horoscope
Get the monthly horoscope for a zodiac sign. Returns the prediction text for the current month plus challenging and standout days.
Bazi MCP Tools (6)
calculate_bazi_chart
Calculate a deterministic OpenFate Bazi/Four Pillars chart with True Solar Time correction, Day Master, DAYUN_SECOND_V2 onset receipts, Da Yun cycles, and branch interactions. Pass an exact birth time plus timezone or timezoneId for a calculated V2 onset; otherwise inspect the explicit unavailable/fallback receipt.
Ready-to-Paste Client Configurations
Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).
Horoscope is categorized under Spirituality & Esoterica and uses a local stdio subprocess. In contrast, Bazi MCP belongs to Spirituality & Esoterica using local stdio subprocess. Select Horoscope when you need capabilities focused on spirituality & esoterica and Bazi MCP when you require tools for spirituality & esoterica.
Detect raw Earthly Branch relationship occurrences for a natal chart and optional annual and Da Yun branches. Preserves every matching pillar position, including repeated branches. Covers clashes, six-combinations, the eight central-branch half-trines (COMBINATION_HALF), full trines, directionals, punishments, destructions, and harms. Results establish relationship presence, not weights, cancellation, or automatic transformation; targetElement is an affinity, not transformed energy.
calculate_true_solar_time
Calculate OpenFate True Solar Time from civil birth time, longitude, timezone, and optional DST offset. Use this when explaining why the hour pillar may differ from ordinary clock-time tools.
reverse_bazi_to_solar_times
Find possible Gregorian datetimes that produce a given four-pillar Bazi string. This is useful when a user only has a Bazi chart or screenshot. This lookup uses clock-time pillars without location-based true solar correction.
get_openfate_bazi_policy
Return OpenFate calculation policy and LLM guidance for Bazi chart calls.
get_openfate_bazi_resources
Return canonical OpenFate URLs for charting, readings, compatibility, wealth, true solar time, and AI crawler metadata.