:::note
**TL;DR**
- Honest counts beat marketing headlines: 12 genuinely distinct domains and 47 unique Vedic endpoints across charts, dashas, doshas, panchang, KP
- Verify accuracy yourself: 828 gold-standard tests plus an open MIT benchmark vs NASA JPL Horizons (median 0.27 arcmin, max 0.54 arcmin)
- Watch for inflation tactics: domain splitting, duplicate endpoint names, fragmented payloads that force ten calls for one chart
- Ship a kundli, matrimonial, or panchang app on the [Vedic Astrology API](/products/vedic-astrology-api "production-ready Vedic API with 47 endpoints across charts, dashas, doshas, panchang, KP") in under a day
:::

**About the author:** Brajesh Vashisht is a Vedic Astrologer and KP Systems Specialist with over 22 years of practice in matrimonial matching, career timing, and muhurta selection across India and internationally. His work draws on Advanced Jyotish Shastra studies, with research focused on KP sub-lord theory, nakshatra analysis, and dasha-based event timing.

Choosing the right Vedic Astrology API can make or break a matrimonial, kundli, or wellness application. This guide covers the dimensions that actually decide the integration: calculation accuracy with public verification, depth of Vedic features (KP, divisional charts, ashtakavarga, shadbala), how to read inflated domain and endpoint counts, AI-agent readiness through remote MCP, and pricing that survives scale.

## What to Evaluate in a Vedic Astrology API

When comparing Vedic astrology APIs, focus on these critical dimensions:

1. **Calculation Accuracy** - Ephemeris engine, ayanamsa support, verification methodology
2. **Feature Completeness** - Birth charts, dashas, doshas, compatibility, panchang, KP astrology, divisional charts
3. **API Design** - REST architecture, request/response formats, OpenAPI spec availability
4. **Performance** - Response times, rate limits, caching support
5. **Pricing** - Flat vs variable per-request costs, monthly plans, all-inclusive vs per-domain
6. **AI and Agent Readiness** - MCP support, structured schemas for LLM integration, chatbot starters
7. **Developer Experience** - Documentation quality, starter apps, interactive tools

## Calculation Accuracy: What Actually Matters

Not all astrology APIs calculate the same way. The ephemeris engine determines planetary position accuracy, and the differences can be significant.

### Ephemeris Engines in the Market

Most Vedic astrology APIs fall into one of three buckets:

| Approach | What it means | Accuracy + Risk |
|----------|---------------|-----------------|
| **NASA JPL Horizons verified** | Planetary positions cross-checked against the reference data NASA uses for spacecraft navigation, with the test suite published publicly | Excellent (sub-arcsecond), independently reproducible |
| **AGPL3 ephemeris library** | High-accuracy open libraries exist, but the dominant one is AGPL3 licensed. Commercial closed-source apps need a paid commercial license from the upstream author | Excellent accuracy, licensing footgun if you ship a closed-source product |
| **Custom or proprietary** | Provider builds their own, no public test suite or reference comparison | Variable, hard to verify, requires trust |

[RoxyAPI](/products/vedic-astrology-api "Vedic astrology API: 47 endpoints across charts, dashas, doshas, panchang, KP") uses Roxy Ephemeris, verified against NASA JPL Horizons. The verification surface is public: **828 gold-standard tests** ship inside the API plus an [open MIT benchmark repo](https://github.com/RoxyAPI/astrology-api-benchmark "Open MIT benchmark: 210 reference points across 21 charts vs JPL Horizons, runnable Python") with 210 reference points across 21 charts you can run yourself. Methodology and per-test results live at [/methodology](/methodology "Public testing methodology: 828 gold-standard tests, JPL Horizons cross-checks"). No AGPL or GPLv3 restrictions in the calc path, so commercial closed-source apps stay clean on licensing.

The key question when evaluating any provider: **can you independently verify their calculations?** APIs that publish a runnable test suite and reference data allow this. Black-box providers require trust.

### Ayanamsa Support

For Vedic (sidereal) calculations, the ayanamsa correction is critical. Most APIs support Lahiri as the default, which is the standard for Indian government almanacs and the most widely used ayanamsa in practice.

Advanced providers also support KP Newcomb (used in Krishnamurti Paddhati astrology), which differs from standard Lahiri by a small but significant margin for sub-lord calculations.

## Feature Comparison: What Do Vedic Astrology APIs Actually Offer?

The Vedic astrology API landscape ranges from basic birth chart providers to comprehensive platforms covering advanced systems. Here is what to look for:

### Core Vedic Features

| Feature | What It Does | Why It Matters |
|---------|-------------|----------------|
| **Birth Chart (D1 Rashi)** | Planetary positions, houses, nakshatras | Foundation of all Vedic analysis |
| **Divisional Charts (D2-D60)** | Varga charts for specific life areas | Professional-grade analysis, D9 Navamsa for marriage |
| **Vimshottari Dasha** | Mahadasha, Antardasha, Pratyantardasha | Primary timing system for predictions |
| **Ashtakoot Compatibility** | 36-point Gun Milan scoring | Matrimonial apps, Kundli matching |
| **Doshas** | Manglik, Kalsarpa, Sadhesati detection | Essential for Indian matrimonial market |
| **Panchang** | Tithi, Nakshatra, Yoga, Karana, Vara | Daily almanac, muhurta selection |
| **KP Astrology** | Sub-lord tables, cuspal analysis, ruling planets | Growing demand from KP practitioners |

### Advanced Features That Separate Premium APIs

| Feature | Availability in Market | Impact |
|---------|----------------------|--------|
| **Ashtakavarga** (BAV + SAV + Shodhya Pinda) | Rare | Transit quality assessment, prediction refinement |
| **Shadbala** (6-fold planetary strength) | Very rare | Determines which planets can deliver results |
| **300+ Planetary Yogas** | Very rare | Identifies special combinations for wealth, fame, spirituality |
| **Upagrahas** (11 sub-planets) | Very rare | Advanced kundli analysis per BPHS |
| **Planetary Aspects with Monthly Calendar** | Rare | Transit timing for predictions |
| **Lunar Aspect Calendar** | Very rare | Moon transit events for muhurta and panchang |
| **Choghadiya and Hora** | Moderate | Electional astrology, auspicious timing |

Most single-domain Vedic APIs cover the core features. Few offer the advanced features that professional astrologers and serious applications require.

### RoxyAPI Vedic Feature Coverage

[RoxyAPI Vedic Astrology API](/products/vedic-astrology-api "47 Vedic endpoints: charts, dashas, doshas, panchang, KP, yogas") provides **47 Vedic endpoints** covering every feature listed above, including:

- Birth chart with all 9 Navagraha + Lagna, house placements, nakshatras with pada
- 15 divisional charts (D1 through D60) with Vargottama detection
- Vimshottari Dasha with 3 levels (Mahadasha, Antardasha, Pratyantardasha)
- Ashtakoot Gun Milan (36-point) with Nadi and Bhakoot dosha detection
- Manglik, Kalsarpa, and Sadhesati dosha analysis with severity and remedies
- Comprehensive Panchang with Choghadiya, Hora, and 8+ muhurta types
- Full KP astrology suite (9 endpoints): planets, cusps, chart, ruling planets, sublord changes, rasi changes
- Ashtakavarga with BAV, SAV (337-point), Reduced Ashtakavarga, and Shodhya Pinda
- Shadbala (all 6 components: Sthana, Dig, Kala, Chesta, Naisargika, Drik Bala)
- 300+ planetary yogas database with formation rules and results
- 11 upagraha (sub-planet) positions per BPHS
- Monthly planetary and lunar aspect calendars with minute-level timing
- 27 nakshatra reference with deities, symbols, and remedies
- 12 rashi reference with Sanskrit names and Vedic attributes

This is part of a broader platform covering **145+ endpoints across 12 domains**: Vedic astrology, Western astrology, Human Design, tarot, numerology, forecasting, biorhythm, dreams, I-Ching, crystals, angel numbers, and location, all under a single API key.

## How to Read Inflated Domain and Endpoint Counts

Three tactics inflate vendor headlines without adding real API surface. Recognize them and the comparison becomes honest. The measurement that survives audit is unique capabilities times complete payloads, not paths in the spec.

**Domain splitting.** Western astrology (one ephemeris, one zodiac, one set of houses) gets sold as four product pages: "Astrology", "Horoscopes", "Charts", "Calculators". Same engine, four homepage entries. RoxyAPI ships 12 genuinely distinct domains: Vedic, Western, Human Design, tarot, numerology, forecasting, biorhythm, dreams, I-Ching, crystals, angel numbers, location. Daily, weekly, and monthly horoscopes live inside Western astrology where they belong, not as separate domain entries. Apply the splitting trick to our 12 and the count would read 30 to 40. We do not.

**Endpoint duplication.** The same calculation ships under two names: `natal-chart` and `birth-chart`, `compatibility` and `synastry`, `transit` and `current-positions`. Both paths point at the same code with the same input and the same response shape. The buyer counts two; the integration uses one. A 200, 300, or 400 endpoint headline often shrinks to 60 to 90 unique capabilities once duplicates are merged.

**Payload fragmentation.** A single useful response (Navagraha placements, houses, nakshatras with pada, divisional charts, aspects, dasha periods) gets sliced across 8 to 12 paths, each returning one fragment. Ten round trips for what should be one call. The buyer sees a wide surface; the integrator pays per slice and stitches the pieces in client code. RoxyAPI returns the complete chart in one call. The [Vedic OpenAPI spec](/api/v2/vedic-astrology/openapi.json "Public Vedic OpenAPI 3.1 spec with full request and response schemas") shows the response payload end to end so you can verify before integrating.

To validate any vendor headline: download the OpenAPI spec, group paths by underlying request schema, count unique capabilities, then read response payloads end to end. Check whether one logical operation (a complete birth chart) is one call or ten. Honest counts survive that audit.

## Performance: Speed Matters for Production Apps

For production applications serving real users, API response time directly affects user experience and conversion rates.

### What to Expect from Vedic APIs

| Performance Tier | Response Time | Good For |
|-----------------|--------------|----------|
| **Excellent** | < 100ms | Real-time UI, mobile apps, chatbots |
| **Good** | 100-500ms | Standard web apps, batch processing |
| **Acceptable** | 500ms-2s | Background processing, report generation |
| **Problematic** | > 2s | Limits UX, increases abandonment |

RoxyAPI averages **under 50ms** for most endpoints, with ephemeris-heavy calculations (monthly aspect calendars) cached via Redis for 24-hour TTL. Cache headers (`X-Cache: HIT/MISS`) let client applications optimize further.

## Pricing: Flat Per-Request vs Variable Per-Endpoint

A critical distinction in API pricing that many comparison guides overlook:

### Variable Per-Endpoint Pricing (Common in Market)

Many Vedic APIs charge different rates depending on which endpoint you call. A birth chart might cost $0.01, compatibility $0.015, dasha $0.008. This creates unpredictable costs and billing complexity, especially when your application calls multiple endpoints per user session.

### Flat Per-Request Pricing (RoxyAPI Approach)

Every API request costs the same, regardless of which endpoint you call. A birth chart calculation costs the same as a panchang lookup or a dosha check. No surprise pricing tiers, no per-endpoint surcharges.

### RoxyAPI Current Pricing

| Plan | Monthly Cost | Requests | Per Request | Coverage |
|------|-------------|----------|-------------|----------|
| **Starter** | $39 (₹2,999) | 25,000 | $0.0016 | All 12 domains, 145+ endpoints |
| **Professional** | $149 (₹9,999) | 200,000 | $0.0007 | All 12 domains, 145+ endpoints |
| **Business** | $349 (₹24,999) | 750,000 | $0.0005 | All 12 domains, 145+ endpoints |
| **Enterprise** | $699 (₹49,999) | 3,000,000 | $0.0002 | All 12 domains, 145+ endpoints |

See live numbers and yearly billing on the [pricing page](/pricing "RoxyAPI plans: Starter, Professional, Business, Enterprise. All 12 domains, one key").

Key advantage: every plan includes **all APIs across all 12 domains**. No per-domain subscriptions, no feature gating. The Starter plan at $39/month gives you the same endpoints as Enterprise.

### How Multi-Domain Pricing Stacks Up

Many providers charge per-domain. If you need Vedic astrology AND Western astrology AND numerology, you might pay three separate subscriptions. With RoxyAPI, one subscription covers everything.

For a matrimonial app that needs birth charts, compatibility, and dosha detection, the effective cost per user interaction (3 API calls) on the Professional plan is under $0.01.

## AI and Agent Readiness

The API landscape is shifting from traditional REST integrations toward AI agent architectures. This matters for future-proofing your application.

### MCP (Model Context Protocol) Support

MCP allows AI agents (Claude, GPT, Gemini) to automatically discover and call API endpoints without manual integration code. The AI reads the API schema, understands what each endpoint does, and calls the right one based on user intent.

RoxyAPI ships **12 remote MCP servers, one per domain**, mounted at `/mcp/{domain}` over Streamable HTTP. The Vedic server lives at `/mcp/vedic-astrology` and exposes every Vedic endpoint as a discoverable tool. Point Claude Code, Cursor, or any MCP client at the URL with your API key, no local install. The AI auto-discovers tools and composes multi-step workflows (birth chart, then compatibility, then dosha check) on its own. Beyond Vedic the same pattern covers Western astrology, Human Design, tarot, numerology, forecasting, biorhythm, dreams, I-Ching, crystals, angel numbers, and location.

#### Remote (Streamable HTTP) vs Local (stdio): Why the Transport Matters

MCP supports two transports. RoxyAPI shipped **Streamable HTTP** MCP servers ahead of the rest of the category. After remote MCP became the path that AI agents actually use in production, several other providers added MCP as a checkbox feature. Most of those late additions ship as **stdio** servers: the developer installs an npm package, runs a local Node or Python process, and the AI client talks to that process over standard input and output. That works on a single laptop. It does not work on n8n, Dify, Make, Zapier, Claude Code, Cursor cloud, Vercel functions, mobile apps, or any browser-side agent, because none of those environments can spawn a long-lived stdio child process. Each end user also has to install the package, keep Node or Python on the right version, restart the process when it hangs, and reinstall when the API ships new endpoints.

**Checkbox MCP versus production MCP.** A real Remote MCP server requires server-side state, transport handling, schema generation from OpenAPI, and per-tenant API key routing. Most stdio MCP additions in this category skip all of that. They ship a thin npm package that wraps the existing REST API and shells out from a local Node process. The wrapper falls over the moment a peer dependency drifts, the postinstall reaches for a binary that no longer exists, or the upstream schema changes. A handful of providers list MCP on their feature page while the published package fails dependency resolution or errors on first invocation. If a stdio wrapper is the only thing on offer, rolling your own MCP server with the official Anthropic SDK on top of the same REST API is often a smaller engineering bill than debugging the vendor wrapper. About 90 percent of MCP claims in this category resolve to a stdio wrapper, not a production server. The 12 RoxyAPI Remote MCP servers run on the same edge that serves the API: Claude Code, Codex, and Cursor sessions hit them daily, and autonomous agents on Telegram and WhatsApp (hosted on n8n, Make, or a homelab) point at the same URLs and keep working through restarts.

RoxyAPI Streamable HTTP MCP lives on our edge. The client only needs a URL and an API key. Drop the URL into your [n8n agent node](/docs/integrations/n8n "Connect n8n AI agents to 145+ astrology and spiritual data endpoints over remote MCP"), [Dify workflow](/docs/integrations/dify "Wire Dify agents to multi-domain spiritual MCP servers, no local install"), [Make scenario](/docs/integrations/make "Make.com modules backed by remote MCP for astrology, tarot, numerology"), [Zapier zap](/docs/integrations/zapier "Zapier triggers and actions backed by remote astrology MCP"), or [Claude Code](/docs/guides/claude-code "Add 12 spiritual-data MCP servers to Claude Code in one command") and you are connected. No npm install, no local daemon, no version skew. New endpoints land for every user the same minute they land in production. For a deeper walkthrough of why the protocol shift matters, see [REST APIs vs MCP for AI agents](/blogs/rest-apis-vs-mcp-ai-agents-when-to-use-which "REST APIs vs MCP: tool discovery, transports, and when to pick each").

Most single-domain Vedic APIs do not support MCP at all, requiring manual REST integration for each AI agent workflow. The ones that bolted MCP on after the fact tend to be stdio-only, which means they do not work in any of the AI-agent platforms above.

### Starter Apps and Chatbot Templates

Building an AI-powered astrology chatbot typically requires:
1. API integration code
2. LLM prompt engineering
3. Intent routing across domains
4. Streaming UI
5. Birth data collection

RoxyAPI provides a free, MIT-licensed [AI chatbot starter](https://github.com/RoxyAPI/astrology-ai-chatbot "MIT-licensed multi-MCP astrology chatbot starter on GitHub") that handles all of this out of the box. Clone, add your API key and LLM key, deploy. The starter supports Claude, GPT, and Gemini via a single environment variable, and discovers every endpoint automatically via the 12 per-domain MCP servers.

**MIT license** matters here. You can fork the repo, rebrand it as your own product, change the system prompt, swap the colors, ship it on your own domain. No royalty, no per-seat fee, no attribution requirement beyond the license file. That is genuinely different from a hosted "AI astrologer" widget you embed and pay per conversation for.

**Bring your own LLM** matters more than it sounds. A common pattern in this space is the bundled-AI provider: you pay a per-query fee in the $0.15 to $0.45 range, and the provider quietly runs a small model behind the scenes with their own system prompt and their own pricing margin. With the RoxyAPI chatbot starter, your application calls Claude, GPT-4, or Gemini directly. You pay the LLM provider their published per-token rate, typically around $0.01 per query for a Vedic chart conversation, with no middleman. At 10,000 conversations a month that is a $1,500 to $4,500 difference.

**Customize the voice.** The system prompt, persona, language style, and even the voice for text-to-speech extensions are yours to edit. A matrimonial app can ship a warm Hindi-English mixed register with traditional Vedic phrasing. A wellness app can ship a clinical, neutral, English-only voice. A spiritual-coaching app can ship a contemplative tone. Same calculation API, three completely different products, all branded as yours, none of it gated by a third-party widget.

Six additional MIT starter apps cover individual domains: Vedic astrology, Western astrology, tarot, numerology, dreams, and a general astrology starter. Browse the full set on the [starters page](/starters "Open-source MIT starter apps: chatbot, Vedic, Western, tarot, numerology, dreams").

## Developer Experience

### Documentation Quality

Look for these documentation features when evaluating Vedic APIs:

| Feature | Why It Matters |
|---------|---------------|
| **OpenAPI/Swagger spec** | Auto-generate SDKs, type-safe clients, IDE autocompletion |
| **Interactive docs** | Try endpoints without writing code |
| **Field-level descriptions** | Every request and response field explained |
| **Code examples** | Copy-paste integration snippets |
| **llms.txt** | AI agents and LLMs can read your documentation automatically |

RoxyAPI provides Scalar-powered interactive docs with complete OpenAPI 3.1 specification, field-level descriptions written for both humans and AI agents, and a full AI-discovery surface: `/llms.txt` (47 KB summary), `/llms-full.txt` (338 KB exhaustive), `/.well-known/agent-card.json` (A2A v1.0), and `/.well-known/ai-plugin.json`. AI agents and LLM crawlers index the entire API without you writing prompts. See the live spec via the [API reference](/api-reference "Scalar interactive playground with OpenAPI 3.1, all 145+ endpoints, test key prefilled").

### Interactive Tool Pages

Beyond API documentation, interactive tool pages let potential users try calculations without signing up. These serve as both demos and SEO landing pages. RoxyAPI offers **26 interactive tool pages** across Vedic astrology, Western astrology, numerology, tarot, I-Ching, and dreams. The Vedic set covers panchang, nakshatra lookup, birth chart, and chandra lagna at [/tools/vedic-astrology](/tools/vedic-astrology "Free Vedic astrology tools: panchang, nakshatra, birth chart, chandra lagna").

## Real-World Use Case Scenarios

### Matrimonial App (20,000 matches/month)

**Requirements:** Birth chart generation, Ashtakoot compatibility scoring, Manglik dosha detection, fast response for real-time matching.

**API Needs:** 3 endpoints per match (birth chart + compatibility + dosha). At 20,000 matches = 60,000 API calls/month.

**RoxyAPI Cost:** Professional plan at $149/month (200,000 included, overage available). Effective cost: $0.0025 per match.

**What to look for:** Flat per-request pricing (so dosha checks do not cost more than birth charts), sub-200ms response times for real-time UX, Nadi and Bhakoot dosha detection in the compatibility response.

### Astrology Consultation Platform (500 detailed readings/month)

**Requirements:** All divisional charts (D1-D60), Shadbala, Ashtakavarga, multiple dasha levels, yogas.

**API Needs:** 5-8 endpoints per reading. At 500 readings = 2,500-4,000 calls/month.

**RoxyAPI Cost:** Starter plan at $39/month (25,000 included). More than sufficient.

**What to look for:** Advanced features like Shadbala (most APIs do not offer this), D2-D60 varga charts, Ashtakavarga with Shodhya Pinda. These are the features that separate professional-grade platforms from basic chart generators.

### Daily Panchang and Horoscope App (200,000 requests/month)

**Requirements:** Daily panchang data, muhurta timing (Choghadiya, Hora), transit analysis.

**API Needs:** Panchang + hora + choghadiya endpoints. Cacheable daily data reduces actual API calls.

**RoxyAPI Cost:** Professional plan at $149/month. With Redis caching (24-hour TTL on panchang data), actual API calls can be significantly lower than user requests.

**What to look for:** Caching headers in responses, comprehensive muhurta coverage (not just basic tithi/nakshatra), Choghadiya and Hora for electional astrology.

### AI Astrology Chatbot

**Requirements:** Natural language questions, multi-domain coverage, streaming responses, birth data collection.

**API Needs:** Variable. Depends on user questions. Typically 2-5 API calls per conversation turn.

**RoxyAPI Advantage:** MCP auto-discovery means the AI agent selects the right endpoint automatically. The free chatbot starter provides a production-ready template. No per-query AI costs from the API side. You bring your own LLM and control costs.

**What to look for:** MCP support (eliminates manual integration), structured response schemas (LLMs parse JSON better than prose), multi-domain coverage (users will ask about tarot and numerology too, not just astrology).

## Migration Checklist

If you are switching from another Vedic astrology API:

1. **Map your current endpoints** to the new provider equivalent endpoints
2. **Compare input schemas** - date format (YYYY-MM-DD vs DD/MM/YYYY), coordinate format, timezone handling
3. **Verify calculation parity** - run the same birth data through both APIs and compare planetary longitudes
4. **Check ayanamsa** - confirm both use the same ayanamsa (Lahiri is standard) or account for differences
5. **Update response parsing** - field names and nesting structure will differ
6. **Test edge cases** - southern hemisphere births, timezone boundaries, midnight births

### Example: Migrating to RoxyAPI

RoxyAPI uses a clean, consistent input schema across all Vedic endpoints:

```json
{
  "date": "1990-07-04",
  "time": "10:30:00",
  "latitude": 28.6139,
  "longitude": 77.2090,
  "timezone": 5.5
}
```

All dates are ISO format (YYYY-MM-DD), times are 24-hour (HH:MM:SS), coordinates are decimal degrees, and timezone is a numeric offset. No string parsing ambiguity, no mixed formats across endpoints.

## Conclusion

The right Vedic astrology API depends on your specific use case:

- **Feature depth** matters most for professional astrology platforms
- **Speed and pricing** matter most for consumer apps at scale
- **AI readiness** matters most for chatbot and agent applications
- **Multi-domain coverage** matters if your users want tarot, numerology, or dreams alongside astrology

For most modern applications, look for a provider that offers flat per-request pricing (predictable costs), comprehensive Vedic coverage including advanced features (Shadbala, Ashtakavarga, KP), fast response times (under 100ms), and AI-native features like MCP support.

Ready to integrate Vedic astrology into your application? [RoxyAPI Vedic Astrology API](/products/vedic-astrology-api "47 Vedic endpoints: charts, dashas, doshas, panchang, KP, yogas") offers 47 Vedic endpoints as part of a 145+ endpoint platform covering 12 domains. View [pricing](/pricing "RoxyAPI plans from $39/mo, all 12 domains, one API key") or explore the [API documentation](/api-reference#tag/vedic-astrology "Live Scalar playground for the Vedic astrology API, test key prefilled").

## Frequently Asked Questions

**Q: What is the most accurate Vedic astrology API?**
A: Accuracy depends on the ephemeris engine and the verification surface. The strongest providers cross-check planetary positions against NASA JPL Horizons and ship a public, runnable test suite so anyone can reproduce the numbers. RoxyAPI uses Roxy Ephemeris with 828 gold-standard tests and an open MIT benchmark repo at github.com/RoxyAPI/astrology-api-benchmark. When comparing providers, run the same birth data through both APIs and compare planetary longitudes to the fourth decimal place. If a provider cannot show you how they verified their calculations, treat the accuracy claim as marketing.

**Q: How much does a Vedic astrology API cost?**
A: Pricing varies significantly. Some providers charge variable rates per endpoint ($0.005-$0.02 depending on which calculation you request). Others offer flat per-request pricing where every call costs the same regardless of endpoint. Monthly plans typically range from $19-$699 depending on volume. Watch for per-domain pricing where Vedic, Western, and numerology are separate subscriptions that stack up quickly.

**Q: Do I need KP astrology endpoints or just Parashari?**
A: If your target audience includes South Indian users or KP practitioners, KP endpoints are essential. KP (Krishnamurti Paddhati) astrology uses a different house system (Placidus) and sub-lord analysis that Parashari endpoints cannot replicate. A comprehensive API should offer both systems. KP endpoints include cuspal sublords, ruling planets, sublord change timings, and significator analysis.

**Q: What is MCP and why does it matter for astrology APIs?**
A: MCP (Model Context Protocol) is a standard that lets AI agents (Claude, GPT, Gemini) automatically discover and call API endpoints. Instead of writing manual API integration code for each AI workflow, MCP-enabled APIs are auto-discovered by the AI. The AI reads the schema, understands each endpoint, and calls the right one based on user questions. Two transports exist: Remote MCP (Streamable HTTP, runs on the vendor edge, point any agent at a URL with an API key) and stdio MCP (the user installs an npm package and runs a local Node or Python process). Stdio does not work on n8n, Make, Zapier, Dify, Vercel functions, mobile apps, or any cloud-deployed agent, because those environments cannot spawn a long-lived stdio child process. For autonomous AI agents on Telegram, WhatsApp, or scheduled n8n workflows, Remote MCP is the path that actually scales. Several vendors marketing MCP support ship stdio wrappers that fail dependency resolution on install or error on first invocation. Verify the transport before integrating.

**Q: Can I use a Vedic astrology API for a matrimonial app?**
A: Yes, and it is one of the most common use cases. You need three core endpoints: birth chart generation (for profile display), Ashtakoot compatibility scoring (Gun Milan, 36-point system), and Manglik dosha detection (critical for the Indian market). Look for an API that returns Nadi and Bhakoot dosha flags in the compatibility response, as these are the most important doshas for marriage matching. At scale (10,000+ matches/month), flat per-request pricing saves significant cost versus variable per-endpoint pricing.

**Q: How do I verify an astrology API calculation is correct?**
A: Compare the API output against an authoritative source. For Vedic calculations, websites like DrikPanchang (panchang data), JyotishApp (planetary positions), and Astrosage (birth charts) provide reference values you can cross-check. Compare planetary longitudes to at least 2 decimal places, verify nakshatra and pada assignments, and check house cusps against a known accurate source. The strongest verification path is a provider that publishes a runnable test suite cross-referenced against NASA JPL Horizons, so you can reproduce the numbers yourself rather than trust marketing claims.

**Q: What is the difference between Vedic and Western astrology APIs?**
A: Vedic (Jyotish) APIs use the sidereal zodiac, which tracks actual constellation positions. Western APIs use the tropical zodiac, fixed to the seasons. The ayanamsa difference (approximately 24 degrees in 2026) means planetary sign placements differ between systems. Vedic APIs typically offer dashas, doshas, nakshatras, and panchang. Western APIs offer aspects, transits, synastry, and solar/lunar returns. Some providers like RoxyAPI offer both systems under a single API key, which is useful for applications serving diverse user bases.

**Q: How do I check if a vendor inflated their domain or endpoint count?**
A: Download the OpenAPI spec and group paths by their underlying request schema. Two paths that take the same input and return the same response shape are the same capability with two names (natal chart and birth chart, compatibility and synastry). Count unique capabilities, not paths. Then read response payloads end to end: a full birth chart should arrive in one call (planets, houses, nakshatras with pada, aspects, divisional charts), not ten. If a vendor splits one calculation across many paths, the spec is selling surface area, not value. RoxyAPI ships 47 unique Vedic endpoints inside 12 genuinely distinct domains, with each endpoint returning a complete payload.