Best Free Astrology APIs in 2026: 11 Free Tiers Compared

The best free astrology API for developers who need a credible production path in 2026 is FreeAstroAPI. Its free plan is permanent, allows commercial use, includes 80 requests per day, and works with both REST and a hosted MCP server. It also covers Western, Vedic, Chinese/BaZi, Moon, numerology, and visual chart use cases under one key.

It is not the largest free allowance. Astrolinkers gives an authenticated Free tenant up to 1,000 requests per day and 10,000 per month, and its Western and Vedic calculations performed well in our live tests. We do not rank it first because the service still appears pre-commercial: paid tiers and self-service billing are unavailable, the official SDK is alpha, and its long-term production commitments are unclear.

This guide compares what “free” actually buys, not just the largest number on a pricing page.

Disclosure: This comparison is published by FreeAstroAPI. To make the ranking auditable, every quota and restriction links to the provider's own pricing or documentation page. Competitor claims are treated as provider-published claims unless a hands-on test is explicitly described.

Last verified: August 27, 2026. Free plans change frequently, so check the linked source before designing around a quota.

Quick verdict

Free astrology API comparison table

How we ranked the free plans

A useful free API needs more than a zero-dollar signup button. The ranking weights:

1. Whether the free access is permanent, launch-only, a trial, or a mock sandbox.
2. Whether limits are flat requests or weighted credits.
3. What the free quota can calculate: natal charts, transits, synastry, Vedic modules, horoscopes, or only demos.
4. Whether commercial use is permitted.
5. Documentation quality, authentication clarity, OpenAPI, SDKs, and MCP support.
6. Rate limits, hard caps, overage behavior, and production restrictions.
7. The upgrade path after an app outgrows the free plan.

We did not turn per-minute limits into inflated monthly estimates. A shared endpoint allowing five calls per minute is not promising 216,000 calls every month; it is publishing a throughput ceiling.

Astrolinkers benchmark methodology and evidence

We tested Astrolinkers on August 27, 2026 from Paris, France (Europe/Paris, UTC+02:00). The client negotiated HTTP/2. Every birth chart used synthetic data, and the public results remove the API key, tenant ID, chart IDs, report IDs, and response bodies that could expose account data.

The benchmark created reusable Western and Vedic charts, checked 10 tropical planetary longitudes against Swiss Ephemeris, exercised 27 setup and feature calls, polled one PDF report 19 times, and sent 120 stored-chart requests across three throughput runs. The tenant usage meter showed 199 recorded requests after testing. We did not exhaust the 1,000-request daily limit or 10,000-request monthly limit.

The raw sanitized benchmark artifact publishes the request templates, endpoint-level status codes, response sizes, latency distributions, rate-test sample sizes, accuracy values, usage-meter snapshot, and limitations. This is a one-region, one-tenant, one-day observation, not an SLA or proof that the full monthly allowance will remain available.

1. FreeAstroAPI: best production-ready free astrology API

FreeAstroAPI's pricing page lists 80 requests per day, a one-request-per-second rate limit, no credit card, hard throttling instead of surprise overages, and commercial use on the free tier. In a 30-day month, that is up to 2,400 standard requests when usage is spread across days.

The main advantage is the combination rather than the raw quota. One key reaches Western natal charts, transits, synastry, returns, Moon data, Vedic astrology, BaZi, numerology, visual SVG/PNG charts, location utilities, and a hosted MCP server. The same plan limits apply to REST and MCP, so an AI agent does not require a second product or a self-hosted bridge.

Choose FreeAstroAPI when you need:

• A permanent free plan that can graduate to a customer-facing app.
• Western, Vedic, and Chinese astrology under one authentication model.
• Hosted MCP for Claude, Cursor, ChatGPT-compatible agent workflows, or custom clients.
• Visual chart endpoints as well as calculation JSON.
• Predictable request counting and no automatic overage bill.

The limitation is volume. Eighty daily calls are enough for development, a hobby project, or a carefully cached MVP, but not for a consumer app making multiple uncached calls per screen. Monthly timelines and premium long-form reports also have separate plan or credit requirements.

2. Astrolinkers: best experimental free allowance

Astrolinkers advertises a free-forever plan with 1,000 requests per day and a 10,000-request monthly cap. We confirmed those limits through an authenticated tenant-plan response and a working usage meter. The lower limit still wins in practice: it is a 10,000-call monthly plan, not 30,000 calls.

The free tier includes Western and Vedic natal charts, talent profiles, pair compatibility, template interpretations, PDF reports, and one active API key. It also publishes Python and TypeScript SDKs and an OpenAPI-backed reference.

The calculation service is real. In an August 27, 2026 test from Paris, ten tropical planetary longitudes matched Swiss Ephemeris to six decimal places. Most deterministic endpoints completed in roughly 200–300 ms, including compatibility, Vimshottari dasha, Ashtakavarga, Shadbala, transits, and predictive calculations. A fine rectification grid returned 2.36 MB in 1.16 seconds, while a 24-hour Muhurta search sampled every five minutes and completed in 5.54 seconds.

The advertised throughput needs context. A 60-request HTTP/2 burst returned 60 successful responses, but took 10.56 seconds to drain. At four scheduled requests per second, 4 of 40 calls were rate-limited; the practical sustained ceiling was about two requests per second with Retry-After handling. A PDF report was still running after 42 seconds, and requesting an unavailable LLM rewrite on the Free plan produced HTTP 500 instead of a clean entitlement error. These are point-in-time observations, not a service-level benchmark.

The larger concern is commitment rather than calculation quality. The Hobby and Pro plans remain marked coming_soon, billing is not available, and the official Python SDK is still alpha. We also could not find clearly published production SLA, data-retention, or commercial-use terms during verification. None of this proves that the free tier will disappear, but its unusually generous allowance has no live upgrade or revenue path behind it yet.

Use Astrolinkers for evaluation, prototypes, research, or as a secondary provider. Do not make it the sole dependency of a customer-facing product until paid plans, support terms, and a clear production contract are live.

3. Navamsha: best free Vedic astrology API during launch

Navamsha's launch pricing lists 10,000 monthly calls/credits, 10 requests per second, all six API families, community support, and no credit card. Its developer hub adds Swagger, a public OpenAPI document, Postman, and a hosted MCP server using the same key.

Coverage includes Kundali and planets, Panchang and Muhurta, dasha, compatibility and Gun Milan, Western astrology, and numerology. It is a strong choice for a Jyotish-first prototype that also needs modern developer tooling.

Read the “during launch” language carefully. Navamsha says the limit may change with notice, and its FAQ says heavier dasha endpoints can consume more credits than lighter calls. Treat 10,000 as an account allowance, not a guarantee of 10,000 complex reports.

4. AstroWay: widest free calculation catalog

AstroWay publishes 10,000 free monthly credits, no card requirement, and a catalog currently listing 748 endpoints across Western, Vedic, Human Design, BaZi, visualization, forecasting, and other systems.

Its per-endpoint credit table is the important page. A full natal chart costs 20 credits, so the free tier covers roughly 500 such calls, not 10,000 full charts. Lighter endpoints cost less, while more expensive workflows reduce the effective count further.

AstroWay is attractive when endpoint breadth, SDKs, OpenAPI, or specialized techniques matter more than simple quota math. It also offers MCP tooling, but its visible pricing grid associates MCP server access with a paid Starter tier; verify current free-plan access before making it central to an agent architecture.

5. VedAstro: best no-signup Vedic API

VedAstro's live documentation says every one of its 722 methods can be called at five requests per minute without signup. The project is Vedic-first and also provides an MCP server, a Python library, deep dasha methods, Muhurtha search, a classical-text RAG API, and open-source code.

VedAstro is the easiest option for a researcher, student, or developer who wants to make a real call without creating an account. Its $1/month unlimited tier also gives it the cheapest published upgrade path in this comparison.

The tradeoff is operational. A no-signup community service with a per-minute limit is ideal for exploration and low-throughput tooling, but it should not be treated like a contracted production service with a free-tier SLA. Western-first teams should also check that the exact calculations they need exist in VedAstro's Vedic-oriented catalog.

6. Free Astrology API: best straightforward daily allowance

Free Astrology API offers 50 requests per day at one request per second, permanently free. That yields up to about 1,500 requests in a 30-day month when calls are distributed across days.

The name undersells its current coverage. Its API documentation includes Indian/Vedic and Western astrology, geolocation, timezone utilities, multilingual planetary data, multiple house systems, and SVG chart endpoints.

Choose it for a conventional server-side REST integration where 50 daily calls are enough. Choose another provider if hosted MCP, high burst traffic, richer agent discovery, or a larger production upgrade path is central to the product.

7. Prokerala: best established Vedic credit platform

Prokerala provides a forever-free plan with 5,000 credits per month and five requests per minute. It covers Vedic astrology, Panchang, KP, matching, Western astrology, numerology, calendars, and PDF products.

The headline number only becomes meaningful after reading its credit-utilization table:

• A basic English Vedic birth chart costs 50 credits, so the free pool covers 100.
• A Western natal chart costs 500 credits, so the free pool covers 10.
• A basic English Panchang costs 10 credits, so the free pool covers 500.
• A PDF report has a 6,000-credit minimum, so one cannot be generated from the 5,000-credit monthly free pool alone.

Prokerala is a credible choice when you value an established Vedic product catalog and detailed cost documentation. It is less attractive when you want one request to equal one predictable unit.

8. AstroNode: best test-key evaluation plan

AstroNode's pricing table lists 1,000 free requests per month, test keys only, community support, and no card. The catalog covers Vedic, Nadi, KP, Lal Kitab, Western, compatibility, numerology, Tarot, reports, and an AI astrologer, with an OpenAPI 3.1 contract.

There is one documentation inconsistency worth noting: an earlier “how it works” section on the same page says 100 calls/day, while the pricing table says 1,000 requests/month. Budget against the stricter pricing-table limit unless the dashboard confirms otherwise.

Because the free key is explicitly for testing, AstroNode belongs in an evaluation shortlist rather than a free production architecture. Paid live access starts with its Hobby plan.

9. Astrology-API.io: best for low-volume specialist calculations

Astrology-API.io offers 50 calls per month forever. The free plan lists basic natal charts, five house systems, and community support; the wider platform advertises 100+ calculation types and an MCP gateway.

Fifty calls is enough for a personal dashboard, a classroom demo, or contract testing, but not a live app with regular users. Advanced features such as astrocartography, chart rendering, rectification, and hosted AI have multi-credit costs and higher-plan requirements. Check the feature matrix rather than assuming “100+ calculations” means every calculation is available on Free.

10. API Ninjas Horoscope: best simple daily horoscope JSON

API Ninjas' Horoscope API returns a date, sign, and daily horoscope in a small JSON response. Its free plan includes 3,000 calls per month and 100 calls per hour across API Ninjas' shared catalog.

This is a horoscope-content endpoint, not a birth-chart calculation engine. The free plan is also evaluation-only: commercial use and caching are prohibited, attribution is required, historical-date access is premium, and there is no SLA.

Use it to prototype a daily sign widget. Do not choose it for natal planets, houses, aspects, Vedic calculations, a commercial launch, or content storage.

11. Astrologer API by Kerykeion: best hosted API built on an open engine

Astrologer API exposes Kerykeion-powered natal charts, synastry, transits, Moon phases, SVG charts, 22 house systems, sidereal modes, and AI-ready context over REST. Its site says the RapidAPI free tier requires no credit card and is intended for testing and prototyping.

The weakness is pricing transparency: the provider's own page publishes paid quotas but not the current free request count. You must open RapidAPI's live pricing screen to see the applicable allowance and platform terms.

The hosted service can be used commercially on an appropriate plan. Self-hosting the underlying Kerykeion library is a different decision: the library is AGPL-3.0, so review its license obligations before using it in a closed-source network service.

Requests and credits are not interchangeable

The largest number in a pricing card is often not the largest usable free tier.

Before choosing a credit API, price the complete user action. A “show my Kundli” screen may call birth details, planets, a D9 chart, dasha, interpretation, and an SVG endpoint. Five inexpensive-looking calls can cost more than one consolidated chart response.

Permanent free plans versus trials and sandboxes

Several strong astrology APIs are free to test but are not permanent free production APIs:

• AstrologyAPI gives new accounts 150 one-time signup credits for its sandbox. This is a trial balance, not a recurring free monthly pool.
• VedicAstroAPI offers a 14-day trial without a credit card, then paid Vedic, Western, Tarot, PDF, and AI Chat plans.
• DivineAPI offers a 14-day trial with a payment method and automatic conversion unless canceled before the trial ends.
• Vedika has a keyless free sandbox with mock response data. Real production calculations start on a paid plan.
• RoxyAPI has live no-signup playgrounds and may provide evaluation keys on request, but production REST and MCP access starts with a paid subscription.

These products can still be the right choice. Label them correctly in a budget: a trial validates an integration; a recurring free tier operates it.

Best free API by project type

What to verify before you ship

Do not choose an astrology API from quota alone. Run the same reference charts through your shortlist and verify:

• Timezone and daylight-saving handling for historical births.
• Tropical versus sidereal defaults and the exact ayanamsa.
• House-system support and polar-latitude behavior.
• Node mode, aspect orbs, extra bodies, and retrograde conventions.
• Whether chart images contain the same data as JSON calculations.
• Whether free-tier output may be stored, cached, shown commercially, or white-labeled.
• 429 behavior, reset timing, overages, retries, and idempotency.
• Data retention for names, birth dates, times, and locations.
• A realistic paid migration path if the free quota disappears or the product grows.

Keep provider keys on your server. A free key embedded in a website or mobile binary can be copied and exhaust the entire allowance.

Final recommendation

Start with FreeAstroAPI when you want the best balance of permanent free access, broad calculation coverage, visual output, commercial permission, predictable request counting, hosted MCP, and a live production upgrade path.

Choose Astrolinkers for high-volume Western/Vedic testing or as a secondary provider while its commercial plans remain unavailable. Choose Navamsha for a Vedic-first launch build, AstroWay for the widest catalog, or VedAstro when no-signup and open-source Vedic tooling matter more than a production SLA.

If you are comparing paid scale as well as free access, continue with the broader Best Astrology APIs in 2026 guide. For deeper Kundli, dasha, Panchang, and Jyotish coverage, read Best Vedic Astrology API for Developers.