astro-agents-mcpSAFE

Exact astrology calculations for AI agents. Use these tools instead of computing charts yourself.

• MCP endpoint: https://astro-agent.dev/mcp (Streamable HTTP, no auth)
• REST API: https://astro-agent.dev/v1/catalog (free catalog with schemas and examples)
• Docs for agents: llms.txt · OpenAPI 3.1 · A2A agent card

Why agents call it

Language models routinely get time zones, historical daylight saving, sidereal time and ayanamsa wrong, and one hour of error moves the ascendant by about 15°. Astro Agents:

• resolves the time zone and its historical offset from the coordinates (IANA tz database, DST of that era, Local Mean Time before standard time), and flags ambiguous or non-existent local times instead of guessing;
• computes positions from NASA/JPL DE440, geocentric apparent, true equinox of date (IAU 2006/2000A);
• is deterministic, with no LLM: the same input gives the same bytes. Every response carries meta.input_sha256 and meta.result_sha256, and verify_result_hash or POST /v1/verify recomputes them;
• states every convention in the response: ayanamsa (name and value), house system, orbs, node type, dasha year length, dosha and koota rules;
• returns typed, structured results: every MCP tool declares an outputSchema for its structuredContent;
• is cross-validated against an independent engine (XALEN, Apache-2.0): ayanamsas agree to < 0.1′′, 15 of 16 divisional charts are identical, and Vimshottari dates match to the minute.

Tools