Best Astrology APIs for Developers in 2026: Pricing, Features, and AI Integration Compared

The astrology API market has grown significantly since 2024. More providers, more endpoints, more pricing models. For developers evaluating which API to build on, the choices can feel overwhelming. Some providers charge per credit, others per product, others per call count, and a few charge a flat rate per request.

This guide compares major astrology API providers based on what actually matters for production applications: pricing predictability, feature coverage, documentation quality, AI agent integration, and long-term scalability.

Every claim in this comparison is based on publicly available pricing pages and documentation, last reviewed May 2026. Pricing and features change, so verify directly with each provider before committing.

Quick Comparison: All Providers at a Glance

Pricing Models: What You Actually Pay

The biggest source of confusion when comparing astrology APIs is pricing. Four different models exist in the market, and each has trade-offs.

1. Flat Per-Request Pricing

Every API call costs the same, regardless of endpoint complexity. A simple planet position call and a full birth chart with aspects, houses, and interpretations both count as one request.

Who uses this: RoxyAPI, FreeAstroAPI

Advantage: Fully predictable costs. You know exactly what your monthly bill will be.

Trade-off: Higher base price than free tiers or credit-based starters.

2. Credit-Based Pricing

You buy a pool of credits each month. Different endpoints consume different numbers of credits. A basic Panchang call might cost 10 credits while a Western natal chart costs 500 credits and a PDF report costs 350,000 credits.

Who uses this: Prokerala

Advantage: Low entry price. Prokerala offers a free plan with 5,000 credits.

Trade-off: Unpredictable costs. You cannot calculate your monthly spend without knowing exactly which endpoints your users will hit. Credit costs vary 35,000x between cheapest and most expensive endpoints on Prokerala (10 credits for basic Panchang vs 350,000 for a Saturn transit PDF).

3. Per-Domain Subscription

Each domain or feature set requires a separate subscription. Want horoscopes? One subscription. Want Western astrology? Another subscription. Want Vedic PDF reports? A third subscription.

Who uses this: AstrologyAPI.com

Advantage: Pay only for what you use. If you only need Indian astrology, you pay for Indian astrology.

Trade-off: Costs stack fast for multi-domain apps. A developer who needs Indian astrology (₹1,500/mo) + Western astrology (₹2,999/mo) + Horoscopes (₹3,500/mo) is already at ₹7,999/mo (~$84) before adding Vedic PDFs or Tarot.

4. Call-Based Subscription

You pay a monthly fee that includes a fixed number of API calls. Different plans offer more calls and more features.

Who uses this: VedicAstroAPI, FreeAstroAPI (paid tiers)

Advantage: Simple pricing. You know how many calls you get per month.

Trade-off: You must estimate your call volume accurately. Overages require upgrading to a higher tier or purchasing top-ups.

Pricing Comparison: Real Monthly Costs

Here is what each provider actually costs for common usage scenarios. INR prices converted at approximately ₹95 = $1 (2026 rate). RoxyAPI USD figures are the actual plan price in USD, not a conversion.

Scenario: Small App (25,000 requests/month, single domain)

Scenario: Multi-Domain App (astrology + tarot + numerology)

Scenario: Production App (50,000+ requests/month, multiple domains)

Key Takeaway

For multi-domain apps (astrology + tarot + numerology + more), RoxyAPI is the only provider where a single subscription covers everything. AstrologyAPI.com requires stacking separate per-domain subscriptions. VedicAstroAPI covers Vedic + Western + Tarot in one combo plan but has no numerology, dreams, I-Ching, or biorhythm. Prokerala has no tarot at all.

For single-domain Vedic apps on a tight budget, Prokerala (free tier for basic Vedic) and VedicAstroAPI (₹1,499/mo for 30K Vedic calls) offer lower entry points.

For high-volume production apps, RoxyAPI Business is $349/mo for 750K requests across all 12 domains, and Enterprise is $699/mo for 3M requests with SOC 2 documentation and a dedicated account manager. Annual billing knocks roughly 17% off the monthly rate (Starter $389/yr, Professional $1,489/yr).

Feature Coverage: Who Has What

Domain Coverage Summary

• Broadest coverage: RoxyAPI (12 domains including dreams, I-Ching, crystals, angel numbers, and biorhythm, which no other provider offers)
• Deepest Vedic: Prokerala and AstrologyAPI.com (specialized Vedic features, multiple matchmaking systems)
• Most languages: VedicAstroAPI (21 languages), Prokerala (5 Indian languages)
• Chinese astrology: FreeAstroAPI (only provider with BaZi and Four Pillars)
• Best combo deal: VedicAstroAPI Full Access (Vedic + Western + Tarot for ₹3,999/mo)

AI Agent Integration: MCP and Beyond

If you are building AI-powered products (chatbots, copilots, AI agents), the integration method matters significantly.

What This Means

MCP (Model Context Protocol) is the open standard developed by Anthropic that lets AI agents auto-discover and call API endpoints as tools. With MCP support, an OpenAI Agent, Claude Desktop, Gemini Agent, Cursor, or Windsurf can connect to an API and immediately use all its endpoints without custom integration code.

RoxyAPI ships Remote MCP (Streamable HTTP transport) across all 12 domains, the dominant 2026 transport. Point Claude Code, Cursor, VS Code, or Windsurf at a URL and 145+ endpoints become callable tools with zero local setup, no Python wrapper to install, no restart loops to manage. RoxyAPI also provides a free, open-source AI chatbot starter built with Next.js and Vercel AI SDK that auto-discovers tools via MCP and works with Gemini, Claude, or GPT.

VedicAstroAPI ships a stdio MCP wrapper covering Vedic, Western, and Tarot endpoints, which means users self-host a local Python process and manage its lifecycle. Functional, but not the same developer experience as a hosted Remote MCP URL.

Other providers require developers to manually write tool definitions, parse responses, handle authentication, and maintain wrapper code for every endpoint they want an AI agent to use.

AI Chatbot Options

For teams building AI chatbots specifically, there are two approaches in the market:

"Bring your own AI" approach: RoxyAPI and VedicAstroAPI both provide structured calculation data. You connect your own LLM (Gemini, Claude, GPT) to interpret the data. This gives you full control over the AI voice, personality, and interpretation style. RoxyAPI provides a free chatbot starter to accelerate this.

AI wrapper services also exist in the market, where you send a question and the API returns a natural language response using their internal LLM. This is simpler but locks you into their AI voice and interpretation, and typically costs more per query since the provider passes through LLM costs.

Documentation Quality

Good documentation reduces integration time. Great documentation makes an API self-serve.

RoxyAPI also provides /llms.txt and /llms-full.txt endpoints that deliver AI-friendly documentation for coding assistants like Cursor, Windsurf, and GitHub Copilot. These structured documentation endpoints help AI tools generate more accurate integration code.

When to Choose Each Provider

Choose RoxyAPI if:

• You need multiple domains beyond astrology (tarot, dreams, I-Ching, numerology, crystals, angel numbers, biorhythm)
• You want flat per-request pricing with no credit math or variable costs
• You are building AI-powered products and want Remote MCP across 12 domains, no local wrappers, no self-hosting
• You want one subscription covering all 12 domains with instant API key delivery
• You want a free AI chatbot starter to clone and deploy in 30 minutes
• You want public accuracy proof, every calculation verified against NASA JPL Horizons via 828 gold-standard tests
• You want to test endpoints before paying, the /api-reference Scalar playground ships with a working test key bolted on, no signup needed
• You prioritize modern documentation designed for both humans and AI agents

Choose Prokerala if:

• You are building a deeply specialized Vedic astrology application (matrimony platforms, detailed Kundali analysis)
• You need Hindi, Tamil, Malayalam, or Telugu language support
• You need PDF report generation
• You need a WordPress plugin for a content-focused astrology website
• You want a free tier to prototype with

Choose AstrologyAPI.com if:

• You need the largest number of Vedic astrology endpoints
• You need separate billing per domain for accounting purposes
• You need Vedic or Western astrology PDF report generation
• You want an established provider with a long track record

Choose VedicAstroAPI if:

• You need Vedic + Western + Tarot in one plan at a competitive price point
• Multi-language output is important (21 languages)
• You want MCP support alongside Prokerala-level Vedic depth
• You need PDF report generation at low per-PDF pricing (₹2-45 per report)
• A 14-day free trial matters for evaluation

Choose FreeAstroAPI if:

• You are a student, hobbyist, or building a prototype
• You need Western + Vedic + Chinese BaZi astrology on a minimal budget
• You want simple, clean API responses without complexity
• Budget is your primary constraint ($15/month for 200K requests)

What to Watch For

A few patterns show up across astrology API providers that developers should be aware of:

Credit-based pricing can be misleading. A plan that advertises "100,000 credits" sounds generous until you realize a single complex endpoint can cost 500 credits. Always calculate your expected credit consumption based on your specific endpoint mix before committing.

Per-domain pricing stacks. If you need three domains, you pay three subscriptions. Always calculate total cost for all domains you will use, not just the starting price for one.

Free tiers have limits beyond requests. Some free tiers limit rate to 5 requests/minute, restrict to basic endpoints only, or exclude commercial use. Read the terms.

"AI-powered" means different things. Some providers run every query through an LLM and return natural language (slower, more expensive per call). Others provide structured data that your own AI layer interprets (faster, you control the AI). Know which model fits your product.

Endpoint counts can be inflated. A provider claiming "300+ endpoints" might count each parameter variation as a separate endpoint. Focus on unique functionality, not raw endpoint counts.

For Developers: Building with Astrology APIs

When evaluating astrology APIs for production use, consider these technical factors:

Response format consistency. The best APIs return clean JSON with consistent field naming across all endpoints. Avoid APIs that return different response structures for similar operations.

Authentication simplicity. API key authentication (header or query parameter) is the simplest to implement and maintain. Avoid providers that require OAuth flows or token refresh logic for server-to-server API calls.

Rate limit transparency. Production APIs should include rate limit headers (X-RateLimit-Limit, X-RateLimit-Remaining) in every response so your application can handle limits gracefully.

OpenAPI specifications. A published OpenAPI spec enables automatic client generation in any language. This saves weeks of manual SDK development. RoxyAPI provides a full OpenAPI 3.1 specification with interactive Scalar documentation.

Timezone handling. Astrology calculations are sensitive to timezone. The best APIs accept timezone offset as a parameter and handle conversion internally. Avoid APIs that require you to convert to UTC before sending.

Starter apps and examples. Look for providers that offer complete, working application templates. RoxyAPI provides 7 free, open-source MIT starter apps (mobile, web, and an AI chatbot) that you can clone and deploy in under 30 minutes.

Ready to build with predictable pricing across 12 domains? RoxyAPI gives you Western and Vedic astrology, KP, tarot, numerology, Human Design, forecasting, dreams, I-Ching, crystals, angel numbers, biorhythm, and location under one subscription. Every request costs the same. Try the API reference playground, it ships with a working test key bolted on, no signup. Then view pricing or explore the API documentation.

Frequently Asked Questions

Q: What is the best astrology API for developers in 2026? A: It depends on your use case. For multi-domain apps (astrology + tarot + numerology + dreams + more), RoxyAPI provides the broadest coverage with 12 domains under one subscription. For deep Vedic specialization on a budget, Prokerala offers a free tier. For Vedic + Western + Tarot in one plan, VedicAstroAPI is competitive at ₹3,999/mo. For budget prototyping, FreeAstroAPI starts at $15/month for 200K requests.

Q: Which astrology API has the most predictable pricing? A: RoxyAPI and FreeAstroAPI both use flat per-request pricing where every API call costs the same regardless of endpoint complexity. Credit-based providers like Prokerala have variable costs per endpoint, making monthly bills harder to predict.

Q: Which astrology API supports AI agents and MCP? A: RoxyAPI ships Remote MCP (hosted, Streamable HTTP) across all 12 domains with 145+ endpoints auto-discoverable by AI agents. Point Claude Code, Cursor, VS Code, or Windsurf at a URL, no local setup. VedicAstroAPI ships a stdio MCP wrapper for Vedic, Western, and Tarot, which users self-host as a local Python process. Other providers require manual integration code for AI agent use.

Q: Can I use astrology APIs for commercial applications? A: Yes. All providers listed here allow commercial use on paid plans. Free tiers may have restrictions. Always check the terms of service for your specific use case, especially around reselling generated content and white-label requirements.

Q: Which astrology API has tarot, numerology, and dream interpretation? A: RoxyAPI is the only provider that includes tarot (10+ endpoints), numerology (16 endpoints), dream interpretation (5 endpoints), I-Ching (9 endpoints), crystals (12 endpoints), angel numbers (4 endpoints), and biorhythm (6 endpoints) alongside Western and Vedic astrology in every plan. VedicAstroAPI covers Vedic + Western + Tarot but not numerology, dreams, I-Ching, or biorhythm.

Q: How do credit-based astrology API pricing models work? A: Credit-based providers give you a pool of credits each month. Each API call deducts a different number of credits depending on the endpoint. For example, on Prokerala, a basic Panchang call costs 10 credits, a Kundali costs 50-300 credits, and a PDF report can cost up to 350,000 credits. Your actual monthly cost depends on which mix of endpoints your users call.

Q: What is the cheapest astrology API for a production app? A: For the lowest absolute cost, FreeAstroAPI offers 50 free requests per day, or 200,000 requests for $15/month. Prokerala offers a free tier with 5,000 credits. For multi-domain coverage, RoxyAPI offers 25,000 requests across 12 domains for $39/month. VedicAstroAPI offers Vedic + Western + Tarot for ₹3,999/mo (~$42) with 110K calls.

Q: Which astrology API has the best documentation? A: RoxyAPI uses Scalar for interactive documentation with live endpoint testing, plus AI-friendly /llms.txt and /llms-full.txt endpoints for coding assistants. Prokerala provides sample API clients in four languages. AstrologyAPI.com and VedicAstroAPI offer Postman collections. Most other providers offer standard reference documentation.

Q: Which astrology API supports the most languages? A: VedicAstroAPI supports 21 languages including English, Hindi, Bengali, Kannada, Malayalam, Tamil, Telugu, Marathi, Gujarati, and 12 more. Prokerala supports 5 Indian languages. Most other providers are English-only.

Q: Is there a free astrology API? A: Several providers offer free access. FreeAstroAPI provides 50 free requests per day with no credit card required. Prokerala offers 5,000 free credits per month (rate limited to 5 requests/minute). VedicAstroAPI offers a 14-day free trial. RoxyAPI offers 20+ free interactive tool pages and 6 free, open-source starter apps on GitHub.