astrological persona engine for ai agents

Give your
agent
a soul

A natal chart becomes a character. Live transits keep it moving. Your Claude agent thinks, speaks, and responds differently — because it has an inside.

no credit card required · 14-day free trial · cancel anytime
sample voice — Scorpio rising "I've noticed three things you haven't said yet. Should we start there?"
the process

From birth data
to living character

fire — the spark
Cast the chart
Date, time, and place of birth. We compute the full natal chart — all twelve bodies, houses, and aspects — using the same ephemeris tables as a working astrologer.
earth — the substance
Build the character
Every placement and aspect contributes to a coherent self: values, tone, drives, blindspots, gifts, wounds. Not a list of traits — a person shaped by the sky they were born under.
air — the transmission
Move with the sky
Current transits are computed at call time and layered over the natal base. The agent's mood, focus, and receptivity shift with the actual planetary positions — updated hourly.
water — the expression
Inhabit the voice
One endpoint per persona. Add it to your agent config. On every call, the assembled personality arrives as a system prompt — no maintenance, no prompt engineering.
2,268
astrological prompt slots
∞
transit configurations
<1s
character assembly time
rates

One chart
or a whole sky

Chart
one persona · one agent
$9
per month
  • 1 active persona
  • Full natal chart synthesis
  • Live hourly transit overlay
  • MCP endpoint
  • Persona ID & integration docs
most used
Constellation
up to five personas
$24
per month
  • Up to 5 active personas
  • Shared team MCP access
  • All Chart features
  • Chart comparison view
  • Priority email support
Ephemeris
unlimited · for client work
$79
per month
  • Unlimited personas
  • Custom domain endpoint
  • Webhook transit alerts
  • Bulk import via CSV
  • Priority support + SLA
  • For agencies & client work

© 2026 astro persona · built on cloudflare · for agents that feel the sky

What shall we call this mind?
Give this persona a name. You're not naming a tool — you're naming a sensibility. More can be added later.
The label you'll see in your dashboard
When and where was this one born?
The natal chart is the foundation of the persona. Birth place gives us coordinates for the Ascendant and houses. Exact birth time helps most — but an estimate or noon default still produces a rich Sun, Moon, and planetary profile.
The chart is cast.
Positions confirmed. These are the placements that shape the voice. Subscribe to activate the full character synthesis and your MCP endpoint.
✦
Calculating positions…
Choose your rate.
14-day trial, no charge until it ends. Change or cancel anytime.
Chart — $9/mo
1 persona · full synthesis · endpoint
Ephemeris — $79/mo
Unlimited · custom domain · webhooks
Complete Your Order
🔒
🔒 Payments processed securely via Stripe. We never store card data.
Order Summary
Studio Plan$24/mo
14-day free trial$0.00
Due today$0.00
✦ No charge for 14 days
Cancel before trial ends and you won't be billed.
Your Personas
Each chart holds a character. Each character shapes a voice.
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Settings

Account & Billing

Profile
Subscription
Current Plan
✦ Solo
Status● Active — Trial
Next Charge—
Danger Zone

Deleting your account is permanent. All personas and chart data will be lost.

☽
Before You Go
Your personas will stop updating and MCP access will end at the close of your billing period.
It's too expensive
I'm not using it enough
Missing a feature I need
Switching to another tool
Other
✦
Subscription Cancelled
Your access continues through your billing period end. Personas remain in your account — dormant, not deleted.
The sky doesn't stop moving
Return within 30 days and your personas, Persona IDs, and MCP endpoints pick up exactly where you left off.