Synastry Predictions API
AvailableA compatibility score and verdict with the love, passion, emotional and identity aspects between two charts and their meanings.
Call it with POST /v1/western/synastry-predictions. Input: two people's birth details. Output: JSON, as a direct response (json); pdf via /v1/jobs/pdf. Each successful call costs 10 credits.
- Endpoint
- POST /v1/western/synastry-predictions
- Input
- Two people's birth details
- Output
- JSON
- Delivery
- Direct response (JSON); PDF via /v1/jobs/pdf
- Cost
- 10 credits
- Compute class
- Report
Example response
Fields in data (inferred from the example)
person_a· stringperson_b· stringcompatibility· objectlove_aspects· array of objectpassion_aspects· array of objectemotional_aspects· array of objectidentity_aspects· array of objectnotes· array of string
Example response
Captured from the live engine with a sandbox key (so credits_used is 0) and trimmed: long arrays keep their first items and images are replaced by a placeholder.
Loading the example…
Request schema and every field: the Western astrology reference.
Synastry Predictions API: common questions
What does the Synastry Predictions API return?
A compatibility score and verdict with the love, passion, emotional and identity aspects between two charts and their meanings. The response's data object includes person_a, person_b, compatibility, love_aspects, passion_aspects, emotional_aspects, identity_aspects and notes. See the reference for an example response.
What input does Synastry Predictions need?
Two people's birth details.
How much does a Synastry Predictions call cost?
10 credits per successful call; a failed call is not charged. Plans and top-ups are on the pricing page.
Can I try it before paying?
Yes. Every account gets sandbox keys and trial credits, so you can call it from your own code before choosing a plan.