For AI agents · MCP server
Ask Claude for your Human Design, and a bodygraph draws itself.
Give your assistant a birth date and time and it reaches for the real chart — Type, Strategy, Authority, every defined center and channel — and renders your bodygraph right in the conversation, computed instead of made up.
- drawn in the chat
- Live bodygraph
- drawn in the chat
- computed from real data
- No guessing
- computed from real data
- to connect it
- One click
- to connect it
Draw the Human Design bodygraph for Carl Jung — 26 July 1875, Kesswil.
explore_human_design1.4s
Here's the bodygraph. The defined centers and channels are drawn straight from the computed Personality and Design activations. Want me to read today's transits over it next?
Actual API output — not a mock-up
Connect it now
One connector, about thirty seconds. Signing in creates your free account — nothing to install.
Connect Claude in ~30 seconds
A remote MCP connector — no download, no API key. OAuth handles sign-in and creates your account on first connect.
- 1Click "Add to Claude" above — it copies the URL and opens Claude → Settings → Connectors.
- 2Click "Add custom connector", then paste the URL into the URL field (Ctrl/⌘+V).
- 3Leave the OAuth Client ID and Secret blank and click "Add". Approve the sign-in popup — that also creates your free OpenEphemeris account.
Custom connectors require a paid Claude plan (Pro or higher). On the Claude desktop app and Claude Code, all plans work.
Using Claude Desktop, Cursor, or another client? See all setup options →
Custom connectors on Claude.ai require a paid Claude plan (Pro, Max, Team, or Enterprise). On the free plan, use Claude Desktop with the config below.
The same one-call flow, shown here drawing a natal chart — a Human Design bodygraph renders exactly the same way.
Say it plainly. It draws the rest.
You ask in your own words. Claude picks the right Human Design tool, sends the right parameters, and answers from computed data.
“What's my Human Design type?”
An interactive bodygraph — Type, Strategy, Authority, drawn in the chat.
explore_human_design“Give me the full breakdown of my chart.”
Every defined center, gate, channel, profile, and Incarnation Cross.
human_design_chart“What's Human Design saying about me today?”
Today's planetary gates laid over your bodygraph.
explore_human_design_transit“How do the two of us connect?”
Two bodygraphs overlaid — shared channels and electromagnetics.
explore_human_design_connection“Merge our charts into one.”
A composite bodygraph for the relationship itself.
human_design_composite“Map the dynamics of our whole team.”
A Penta chart for 3–5 people with a group stability score.
human_design_penta“When's my next Saturn return, in HD terms?”
The full bodygraph at the exact moment a planet returns.
hd_planetary_return“Read my design without any birth place.”
Latitude and longitude are optional — time is what matters.
human_design_chartA real bodygraph, not a description
Claude calls a typed tool against the NASA JPL DE440 kernel and an SVG bodygraph renders in the conversation — defined centers, active gates, and channels, computed, not guessed.
Both charts, done for you
Human Design needs two moments: your birth time (Personality) and the point ~88° of Sun motion earlier (Design). The engine computes both automatically at 2 credits a call.
Mid-conversation
No app to open, no form to fill. You're already talking to your assistant — now it can draw your bodygraph while you talk.
Your birth data never trains a model
Birth details are used to run the calculation, then discarded. We don't sell them, share them, or feed them to anyone.
The math under the bodygraph
Human Design is only as good as its astronomy. OpenEphemeris computes every gate and line from the NASA JPL DE440 ephemeris kernel — the sub-arcsecond planetary data used in professional astronomy, valid from 1550 to 2650 CE. The Personality chart is cast for your birth moment; the Design chart is placed at the exact instant the Sun had travelled 88° of arc earlier, not an approximate 88-day offset — so activations sitting near a gate boundary resolve to the correct hexagram line. Both sets of positions are returned together, every call.
Free to start. Pay only for what you compute.
Every account runs on a credit wallet. A Human Design chart costs 2 credits; the interactive bodygraph adds a small visual charge. Subscribe for a monthly credit allowance, or top up a one-time wallet — credits never expire either way.
Explorer
Free
150 credits
No card required
Pro
$29/mo
75,000 credits
Unlock full math
Startup
$79/mo
500,000 credits
Visual infrastructure unlocked
Scale
$199/mo
2,000,000 credits
High-volume production
No subscription? Just top up.
One-time credit wallets for pay-as-you-go. Credits never expire, and your free 150-credit Explorer grant is waiting the moment you sign in.
Full plan detail and enterprise volume on the pricing page. Explorer is free — 150 credits to start (one-time), no card required.
Not using Claude.ai?
The same Human Design tools work in Claude Desktop, Claude Code, Cursor, Windsurf, ChatGPT, and any MCP-compatible client.
{
"mcpServers": {
"openephemeris": {
"command": "npx",
"args": ["-y", "@openephemeris/mcp-server"]
}
}
}Settings → Developer → Edit Config. Paste, save, restart. No API key required — first tool call prompts you to link your account.
Self-hosted and CLI clients authenticate with an API key from your dashboard. Free Explorer tier — 150 credits to start (one-time), no card required.
Questions
- How accurate is the bodygraph?
- Every gate and line comes from the NASA JPL DE440 ephemeris kernel — the same sub-arcsecond planetary data used in professional astronomy. The Design chart is placed at the exact moment the Sun had moved 88° of arc before birth, not an approximate 88-day offset, so gate activations near a boundary resolve correctly.
- What birth data does Claude need?
- A birth date and time, ideally to the minute — Human Design is time-sensitive and a defined center can flip within minutes. Latitude and longitude are optional for the core chart but sharpen the houses and the Design calculation. Give Claude the time in UTC, or tell it the place and it can convert.
- Is my birth data stored?
- No. Your birth details are passed to the calculation, used to compute the chart, and discarded — they are not retained, sold, or used to train any model. See our privacy policy for the full detail.
- Does it work on free Claude plans?
- Custom connectors on Claude.ai require a paid Claude plan (Pro, Max, Team, or Enterprise). On the free Claude plan, use Claude Desktop with the config below — it connects the same tools with no Claude subscription. Either way, your OpenEphemeris Explorer account is free.
- What is a bodygraph?
- The bodygraph is the visual chart at the heart of Human Design: nine centers connected by 36 channels made of 64 gates. Which centers are colored in (defined) versus open (undefined) determines your Type, Strategy, and Authority. Our engine draws the whole thing as an SVG right in the conversation.
- Which Human Design tools can Claude call?
- The interactive explorer (explore_human_design), the full data chart (human_design_chart), transits over your design (explore_human_design_transit), relationship connections (explore_human_design_connection), composite and Penta group charts (human_design_composite, human_design_penta), and HD planetary returns (hd_planetary_return) — alongside the full OpenEphemeris astrology surface.
Human Design is a system originated by Ra Uru Hu. OpenEphemeris is an independent calculation service, not affiliated with or endorsed by Jovian Archive.