Resources / guide
A selection worksheet for horoscope, birth-chart, compatibility and astrology data integrations.
01 / Start here
For a team adding birth charts, compatibility, forecasts or other computed features to a website or application. Use it before signing an API contract or promising a result to users.
Choose whether you need raw calculation data, rendered reports or both. The more your product depends on structured output, the more important schema stability, calculation assumptions and commercial reuse rights become.
02 / Core guide
“Add an astrology API” can mean a chart image, structured planetary positions, compatibility scoring, time-zone lookup, translated interpretations or a full report. Write down exactly what the user will enter, what the service must return and how the result will be explained. A demo response is not enough to prove production suitability.
Use cases that cover different dates, places, time zones and daylight-saving transitions. Include incomplete birth times and locations with ambiguous spellings. Have a qualified domain reviewer compare expected results and interpretation language rather than judging only whether the endpoint returns a successful response.
Do not ask for more personal data than a calculation needs. Explain why birth details are collected and where they are sent. Validate fields on the client, but enforce access and rate limits server-side. Cache only where the licence and privacy design permit it. Provide a useful failure state when the API is unavailable instead of silently returning a misleading result.
Model development, testing, translation, hosting, overage charges, support and potential migration. Confirm whether the licence permits public tools, white-label reports, storing results and commercial redistribution. If the API becomes central to your product, document an exit path and the data you would need to switch vendors.
Vendor scorecard: calculation coverage · reviewed accuracy · structured output · localization · reliability · data handling · commercial rights · support · total cost.
Start with one narrow user journey, validate it with domain experts, then expand. Explore integration design ↗ or discuss a specific product workflow ↗.
03 / Make the choice
The right choice depends on customer expectations and the team’s ability to deliver it consistently. Use the trade-offs as a starting point for a scoped pilot.
| Model | Best fit | Operational consequence |
|---|---|---|
| Rendered report API | You want a fast proof of a familiar report with little custom interpretation. | Easy to display, but branding, localization, accessibility and later customization may be limited. |
| Structured calculation API | Your own interface and interpretation layer are core to the product. | More design and content work, but greater control over output, testing and reusable product features. |
| Hybrid provider | You need a report now and structured data for future tools. | Clarify whether the two outputs use the same calculation settings and whether both rights are included. |
04 / Build and test
Give each stage a named owner and a concrete acceptance test. Advance when the working journey and support response are clear.
List required calculations, input fields, systems or traditions, locales and response formats. Define handling for unknown birth time and ambiguous place names. Prepare a reviewed set of example cases spanning time zones and daylight-saving boundaries.
Run the same test cases across providers. Compare input normalization, calculation settings, numerical outputs, report wording and error messages with domain experts. Record discrepancies and whether the vendor can explain them.
Check authentication, rate limits, timeout behavior, uptime commitments, version changes, webhooks if applicable, data retention and support. Simulate quota exhaustion and a vendor outage. The product must display a safe, comprehensible failure state.
Calculate expected requests per successful user, peak traffic, overages, storage, localization, integration and support. Confirm white-label, public-tool and result-storage rights in writing. Retain enough of your own product data and interface to replace a provider if needed.
05 / Worked example
A matchmaking application requests birth place and date from two users and displays a compatibility summary. The team first defines which fields are optional, what the score represents and the calculation system used. It tests cases across a daylight-saving shift and a place with multiple matching names. The API returns structured factors, while the application provides its own reviewed explanation. If a request fails, no invented score is shown; the user can correct inputs or try later.
For each target language and tradition, document chart conventions, time-zone and daylight-saving data, transliteration, place lookup, content rights, input retention and cross-border data flows. Compare sample outputs with a knowledgeable domain reviewer.
06 / Measurement
Agree on the numerator, denominator and time window before launch. Segment by market or service when different customer journeys would hide a problem in the average.
| Signal | How to define and use it |
|---|---|
| Valid-result rate | Usable reviewed results ÷ valid requests, separated from input errors. |
| Response latency | Time to a complete result at typical and peak load, including place lookup. |
| Cost per completed result | Total request, infrastructure and support cost ÷ usable completed results. |
| Version drift | Changes in outputs for a fixed reviewed test set after vendor updates. |
07 / Launch gate
Use this as a team sign-off, then store the owner, evidence and test result beside each item in your project tracker.
08 / Questions
No. It supplies a calculation or report. The product still needs user consent, input validation, useful explanations, design, billing where relevant, support and a way to handle uncertain or failed inputs.
Check their calculation systems, ephemerides, time-zone interpretation, location lookup and default assumptions before labeling one incorrect. Use qualified domain review and documented test cases.
Store only what is needed for the service and for the period you can justify. Make vendor data flows clear and use appropriate access controls; the precise privacy design depends on your launch markets.
Only if the contract and your privacy design allow it. Cache keys must reflect every input and calculation setting that changes the result, and invalidation needs a plan.
Keep presentation and business logic separate from the vendor response, document data mappings, preserve reviewed test cases and understand export and termination rights.
09 / Research notes
These sources informed specific implementation checks above. Product features and regional requirements can change; verify the current documentation before committing to a vendor or launch market.
Editorial review: September 2026. The example and planning metrics are illustrative. Regulatory, tax and contract questions require review for the countries and services you choose.
