Looking for an alternative to True Solar Time? Whether you need a different runtime environment, custom authentication support, or alternative API integrations in the Developer Tools ecosystem, we have cataloged and compared the top alternative MCP servers below.
True Solar Time MCP server converts a recorded birth time into corrected solar time using an IANA time zone, birthplace longitude, historical DST, and the equation of time. Its local MCP tools return the correction breakdown, hour branch, boundary distance, and detection of nonexistent civil times. A hosted streamable-HTTP endpoint is also available without installation and additionally provides chart-casting tools. Reach for it before passing birth data to a BaZi or Four Pillars charting system.
Direct comparison of key metrics, runtimes, authentication methods, and community popularity.
| Server Name | Runtime | Auth | Pricing | GitHub Stars | Downloads | Action |
|---|---|---|---|---|---|---|
| npx | Free/None | Free | — | — | Current | |
| npx | API key | Bring your own API key (usage-based cost) | 28,192 | — | Compare → | |
| npx | API key | Free | 3,021 | — | Compare → | |
| npx | No auth required | Free | 825 | — | Compare → | |
| npx | No auth required | Free | 2 | — | Compare → | |
| npx | Free/None | Free | 1,026 | — | Compare → | |
| npx | No auth required | Free | 138 | — | Compare → | |
| npx | API key | Paid | 5,986 | 1 | Compare → | |
| Remote (SSE) | OAuth | Free | 72 | — | Compare → | |
| uvx | No auth required | Free | 745 | — | Compare → | |
| bunx | No auth required | Free | 7 | — | Compare → | |
| npx | Free/None | Free | — | — | Compare → | |
| npx | Free/None | Free | 13 | — | Compare → |