Comparison Astrology APIs Facts checked 7 September 2026

Asterwise vs AstroWay Calculation API

AstroWay offers the broadest Vedic surface on this site, with ten dasha systems, sixteen vargas and 21 languages on a credit model. Asterwise prices per call, signs every response, adds Rajju and Vedha vetoes, and publishes an accuracy check against NASA JPL Horizons.

By Asterwise

Facts about AstroWay Calculation API were read from its own pages on 7 September 2026; every row in the full table below carries its source, and the page ends with how to report an error.

The short answer

AstroWay is the broadest Vedic surface on this page: ten dasha systems, sixteen vargas, KP, Lal Kitab, Jaimini, Varshaphal, SVG and PDF output, 21 languages, a free 10,000-credit tier and a published swetest benchmark with its script. Its Dashakoota omits Rajju, it has no Papasamyam or Porutham, and its own pages disagree on tool counts, dasha counts and which plan includes MCP. Asterwise is smaller, prices per call rather than per credit, signs every response, and sits on the official MCP registry.

What you can verify before you write a line of code

An astrology API is a promise about astronomy, coverage and price. The fastest way to compare two of them is to ask what each lets you check in advance.

Can you check this before signing up?AsterwiseAstroWay Calculation API
The exact price of a callYes. $10 ÷ 10 = $1.00; $30 ÷ 50 = $0.60; $100 ÷ 300 = $0.33.Per 1,000 full-chart calls at 20 credits each: $2.00 (Indie), $1.90 (Starter), about $1.48 (Pro), $1.14 (Business); simple lookups are half that; Vedic dasha, Varshaphal and Shadbala calls are listed at 50 credits, AI, rectification and PDF calls at 100 to 5,000
What computes the positionsYes. Swiss Ephemeris with the full data files.Swiss Ephemeris compiled to WebAssembly with DE431 data files; the vendor notes outer planets and Chiron use a compressed ephemeris set
How accurate the positions areYes: 80 positions checked against NASA JPL Horizons, median 0.046 arcseconds, raw data and script published.Yes: 130 positions over 10 charts (1900 to 2050) against Astrodienst swetest, measured 2026-07-29, median 0.0013 arcseconds, maximum 0.561 (Chiron), Neptune 0.223; script published (MIT). The homepage separately states "Sub-arcsecond drift (≤0.1″) vs NASA JPL ephemeris and Astrodienst reference"
The full API contractYes, public at api.asterwise.com/openapi.json.Yes, OpenAPI 3.1 at api.astroway.info/v1/openapi.json, also mirrored on GitHub
Try it without payingYes. 500 calls a month, no card, does not expire.10,000 credits a month, 10 requests a minute, no card, "all light endpoints", sandbox key, best-effort SLA

Where a cell says not published, it means we could not find the fact on the vendor's pages on 7 September 2026. It is not a claim that the fact is bad, only that you cannot check it before you build.

Choose AstroWay Calculation API if

  • You need Kalachakra, Tribhagi, Shatabdika, Shodashottari, Sthira or Shoola dasha, Jaimini, muhurat finders, or PDF reports.
  • Your users need responses in Ukrainian, Polish, Japanese, Korean, Arabic or the other languages in its enum.
  • You want a free tier of 10,000 credits a month and a $5 entry plan.

Choose Asterwise if

  • You want a bill you can forecast: a call is a call, at $1.00, $0.60 or $0.33 per thousand; AstroWay bills 5 to 5,000 credits per call.
  • You need Rajju and Vedha as vetoes on the Ashtakoot result, Papasamyam, or Kerala and Tamil Porutham; none appear in AstroWay's OpenAPI document.
  • You want signed API responses; AstroWay signs webhooks only.
  • You want an MCP server on the official registry with one tool count and one plan rule; AstroWay's pages give three tool counts and disagree on whether the free key works.
  • You want an accuracy check against NASA JPL Horizons itself, not against another Swiss Ephemeris build.

Start with 500 free calls a month, no card, no expiry. Connect the MCP server to Claude or Cursor in one line, or install the Python or TypeScript SDK. See pricing or connect the MCP server.

The full table

Every row carries its source. Prices are shown in the currency each vendor displays and are not converted.

AsterwiseAstroWay Calculation API
Company Asterwise Labs a1 AstroWay /api (trading name), Ukraine; the vendor's privacy page names a sole-proprietor operator b1
No company name or registration number on the API site; personal names omitted
Free tier 500 calls a month, no card, does not expire a2 10,000 credits a month, 10 requests a minute, no card, "all light endpoints", sandbox key, best-effort SLA b2
Entry paid plan Builder: $10 a month for 10,000 calls a3 Indie: $5 a month for 50,000 credits (a full chart costs 20 credits), overage $5 per 10,000 credits; Starter $19 for 200,000; "USD billed in UAH at Monobank rate"; a $299 lifetime plan was on offer b3
Price per 1,000 calls $1.00 (Builder); $0.60 (Launch, $30 for 50,000); $0.33 (Scale, $100 for 300,000) a4
$10 ÷ 10 = $1.00; $30 ÷ 50 = $0.60; $100 ÷ 300 = $0.33		 Per 1,000 full-chart calls at 20 credits each: $2.00 (Indie), $1.90 (Starter), about $1.48 (Pro), $1.14 (Business); simple lookups are half that; Vedic dasha, Varshaphal and Shadbala calls are listed at 50 credits, AI, rectification and PDF calls at 100 to 5,000 b4
$5 ÷ 2.5 = $2.00; $19 ÷ 10 = $1.90; $59 ÷ 40 = $1.475; $199 ÷ 175 = $1.137; per 1,000 credits $0.10, $0.095, $0.074, $0.057
Endpoints 118 operations on 115 paths, counted from the live OpenAPI document a5 760 operations on 758 paths, counted from the live OpenAPI document; the vendor's pages say 748. Vedic: 174 operations tagged Vedic in the document; vendor pages say 174, 175 and "354+" b5
Vendor count and document differ
Matchmaking depth Ashtakoot (36) with Rajju and Vedha as separate classical vetoes, dosha cancellation, Mahendra and Stree Deergha; Dashakoot (10 kootas); Papasamyam; Kerala Porutham; Tamil Thirumana Porutham; Western compatibility; numerology compatibility a6 Ashtakoot (36) with Bhakoot and Nadi dosha flags; Dashakoota defined by the vendor as "10-fold 39-point", Ashtakoot plus Mahendra (2) and Vedha (1); Manglik check, Mangal match, Bhrigu match; Western synastry and match score. Rajju, Stree Deergha, Papasamyam and Porutham do not appear in the OpenAPI document b6
Dasha systems Vimshottari to 5 levels, Ashtottari, Yogini, Char; dasha-transit correlation a7 10 systems in the OpenAPI document (Vimshottari, Yogini, Ashtottari, Kalachakra, Chara, Tribhagi, Shatabdika, Shodashottari, Sthira, Shoola), each to 5 levels; Jaimini and Lal Kitab dasha endpoints; dasha-change webhooks. The docs overview says "8 systems" b7
Vendor pages disagree on the count
Divisional charts All 16 divisional charts, D1 to D60 a8 16 divisional charts, D1 to D60, one endpoint each; the older single endpoint is deprecated with a 2027-06-15 sunset b8
KP, Lal Kitab, Varshaphal KP (chart, significators, ruling planets); Lal Kitab (chart, remedies); Varshaphal (chart, Saham, Harsha Bala) a9 KP (10 endpoints plus 6 KP doshas, including horary and sub-sub-lords); Lal Kitab (12 endpoints, 6 doshas, PDF report); Varshaphal (Tajika chart with sahams and year lord, plus Lal Kitab varshphal); also 12 Jaimini and 12 muhurat endpoints b9
Ayanamsa options 4 selectable on every sidereal endpoint: Lahiri, Raman, KP, tropical a10 10 by name on chart input: Lahiri (default), Raman, Krishnamurti/KP, Yukteshwar, JN Bhasin, True Citra, Fagan-Bradley, De Luce, Djwhal Khul; a numeric ayanamsaId is also accepted b10
MCP server Yes: remote server at mcp.asterwise.com, 103 tools, OAuth 2.1 or API key. Listed on the official MCP registry and Smithery; source public on GitHub a11 Yes: npm @astroway/mcp (MIT, source on GitHub) and a hosted server at mcp.astroway.info/mcp; tool count stated as 624, 630 or 748 on different vendor pages; the pricing page lists MCP under the Pro plan while the vendor's MCP README says it works with a free key; listed on Glama, not on the official MCP registry b11
Vendor pages disagree on tool count and plan gating
Official SDKs Python and TypeScript, both generated from the OpenAPI document (v0.2.4 on PyPI and npm) a12 TypeScript, Python (auto-generated from the OpenAPI document) and PHP, plus React, Symfony, Laravel, WordPress, Elementor and browser-widget packages, all MIT b12
OpenAPI document Yes, public at api.asterwise.com/openapi.json a13 Yes, OpenAPI 3.1 at api.astroway.info/v1/openapi.json, also mirrored on GitHub b13
Ephemeris Swiss Ephemeris with the full data files a14 Swiss Ephemeris compiled to WebAssembly with DE431 data files; the vendor notes outer planets and Chiron use a compressed ephemeris set b14
Published accuracy check Yes: 80 positions checked against NASA JPL Horizons, median 0.046 arcseconds, raw data and script published a15 Yes: 130 positions over 10 charts (1900 to 2050) against Astrodienst swetest, measured 2026-07-29, median 0.0013 arcseconds, maximum 0.561 (Chiron), Neptune 0.223; script published (MIT). The homepage separately states "Sub-arcsecond drift (≤0.1″) vs NASA JPL ephemeris and Astrodienst reference" b15
Homepage figure and the vendor's benchmark maximum differ; reference differs from Asterwise's (swetest, not JPL Horizons), so medians are not directly comparable
Authentication Bearer token or X-API-Key header; every response, including errors and the unauthenticated health check, carries an X-Asterwise-Signature HMAC header a16
Verify with: curl -sI https://api.asterwise.com/health		 X-Api-Key header; webhook deliveries signed with X-AstroWay-Signature HMAC-SHA256; API responses themselves are not signed b16
Rate limits Per-plan burst budget over a 60-second window; the numeric limits are not published a17 10, 30, 120, 400 or 1,000 requests a minute by plan; 429 RATE_LIMIT with Retry-After; separate 429 codes for credits exhausted and spend cap b17
Languages English only 21 codes in the OpenAPI language enum (Ukrainian, English, German, Russian, Polish, Spanish, Portuguese, French, Italian, Dutch, Czech, Romanian, Hungarian, Greek, Turkish, Arabic, Hindi, Japanese, Korean, Vietnamese, Indonesian); the changelog lists 20 and the docs say 21 b18
Vendor pages disagree by one
Reports and images Kundali chart SVG endpoint; no PDF reports; interpretation fields on natal, dasha, dosha and gochar responses a19 SVG North, South and East Indian chart renders; PDF kundli and Lal Kitab reports (5,000 credits each); keyless embeds and public endpoints; webhooks; AI interpretations on Starter and above; white-label; public status page and a per-plan SLA b19

How to read the prices

Where a vendor publishes both a monthly price and a monthly call quota, the price per 1,000 calls is the first divided by the second, and the arithmetic is shown under the row. Where a vendor sells credits that cost different amounts per endpoint, or publishes no quota, no per-call price is given, because none can be derived.

How this page stays honest

Every statement about another vendor on this page is a statement about what that vendor's public pages said on the date shown, not a statement about the quality of its calculations or its service. Where a page did not say, the row reads not published, and that means only that we could not find it. Vendors change prices and features; verify anything that matters to you on the vendor's own page before you decide.

Report an error. Email support@asterwise.com with the row, the correct fact and a public page that shows it. We check it within five business days, change the row, and record the change in the corrections log on this page with the date.

Corrections log. No corrections have been requested for this page since it was published on 7 September 2026.

Trademarks and independence. AstrologyAPI, Prokerala, DivineAPI, FreeAstrologyAPI, VedicAstroAPI, RoxyAPI and AstroWay are the names of their respective owners and are used only to identify those products. Asterwise is not affiliated with, endorsed by or partnered with any of them.

Sources

Asterwise rows:

  1. Company: https://github.com/asterwise/asterwise-mcp/blob/main/LICENSE
  2. Free tier: https://asterwise.com/pricing/
  3. Entry paid plan: https://asterwise.com/pricing/
  4. Price per 1,000 calls: https://asterwise.com/pricing/
  5. Endpoints: https://api.asterwise.com/openapi.json
  6. Matchmaking depth: https://api.asterwise.com/openapi.json
  7. Dasha systems: https://api.asterwise.com/openapi.json
  8. Divisional charts: https://docs.asterwise.com/mcp/tools/get-divisional-chart/
  9. KP, Lal Kitab, Varshaphal: https://api.asterwise.com/openapi.json
  10. Ayanamsa options: https://docs.asterwise.com/reference/ayanamsa/
  11. MCP server: https://registry.modelcontextprotocol.io/v0/servers?search=asterwise
  12. Official SDKs: https://pypi.org/project/asterwise/
  13. OpenAPI document: https://api.asterwise.com/openapi.json
  14. Ephemeris: https://asterwise.com/proof/
  15. Published accuracy check: https://asterwise.com/accuracy/
  16. Authentication: https://api.asterwise.com/health
  17. Rate limits: https://docs.asterwise.com/reference/errors/burst_limit_exceeded/
  18. Reports and images: https://api.asterwise.com/openapi.json

AstroWay Calculation API rows, all read on 7 September 2026:

  1. Company: https://api.astroway.info/en/privacy/
  2. Free tier: https://api.astroway.info/en/pricing
  3. Entry paid plan: https://api.astroway.info/en/pricing
  4. Price per 1,000 calls: https://api.astroway.info/en/pricing
  5. Endpoints: https://api.astroway.info/v1/openapi.json
  6. Matchmaking depth: https://api.astroway.info/v1/openapi.json
  7. Dasha systems: https://api.astroway.info/v1/openapi.json
  8. Divisional charts: https://api.astroway.info/v1/openapi.json
  9. KP, Lal Kitab, Varshaphal: https://api.astroway.info/v1/openapi.json
  10. Ayanamsa options: https://api.astroway.info/v1/openapi.json
  11. MCP server: https://github.com/astroway/astroway-mcp
  12. Official SDKs: https://github.com/astroway
  13. OpenAPI document: https://api.astroway.info/v1/openapi.json
  14. Ephemeris: https://api.astroway.info/en/accuracy/
  15. Published accuracy check: https://api.astroway.info/en/accuracy/
  16. Authentication: https://api.astroway.info/v1/openapi.json
  17. Rate limits: https://api.astroway.info/en/pricing
  18. Languages: https://api.astroway.info/v1/openapi.json
  19. Reports and images: https://api.astroway.info/v1/openapi.json

AstroWay Calculation API documentation: https://api.astroway.info/en/docs. Asterwise documentation: docs.asterwise.com.