Precise charts. Cited readings.

How the product is built

Two layers stay strictly separated. The LLM never computes longitudes or dasha boundaries; the rules engine never invents interpretive prose.

Jyotish core. Swiss Ephemeris–backed, BPHS-faithful math for grahas, bhavas, vargas, dashas, strengths, yogas, and gochara — air-gapped from language models.

Vyakhya. A fixed reading pipeline retrieves verses, drafts an answer, and cite-checks claims against Tier-1 and Tier-2 texts before you see them.

What you can do

After you sign in, the workspace holds people, charts, timing, documents, and conversation in one place.

• Birth charts

  North and South Indian views, divisional charts, and graha tables rendered from engine JSON — no astrology math in the browser.

• Ask with citations

  Follow-up questions return plain-language answers grounded in retrieved verses, with clear markers when support is thin.

• Life periods

  Vimshottari dashas and Sade Sati cycles over a lifetime window, tied to engine dates rather than guesswork.

• Janma patrika

  A print-ready Nepali document with mangalacharan, birth details, kundalis, dasha, and Sade Sati — view or PDF.

• People & matching

  Save family charts and run kundali matching with explicit provenance when a tradition is not from BPHS.

• Talk with Daivin

  A live voice consult over a saved chart, using the same engine facts as the rest of the product.

Sources we use

Authority is tiered. Readings cite Tier-1 and Tier-2 classics; modern commentary is never treated as scriptural authority.

• Tier-1 — Brihat Parashara Hora Shastra

  R. Santhanam translation (Ranjan Publications, 1984, two volumes, 97 chapters). Reference edition for calculation rules and primary interpretive citations.

• Tier-2 — supporting classics

  Brihat Jataka (Varahamihira), Saravali (Kalyana Varma), and Phaladeepika (Mantreswara) — named supporting texts used when BPHS is silent on a topic.

• Ephemeris — Swiss Ephemeris

  Planetary positions, nodes, and rise/set via Swiss Ephemeris (Astrodienst). Licensing is dual AGPL / commercial; see project ADR-001.

• Ayanamsa & houses

  Default Lahiri ayanamsa (Indian Calendar Reform Committee, 1955) and Sripati house system as the BPHS reference configuration. Other options are allowed but flagged as deviations.

Plain-language teaching terms (without claiming classical authority) live in the glossary .

What this is not

GrahaSaathi is for reflection and education. It is not medical, legal, or financial advice. Manuscript traditions differ; where formulas are uncertain we stop for human verification rather than inventing a number from the open web.

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Try the workspace

Create an account to cast charts, save people, and ask follow-ups with the same engine and corpus behind the product.