MCP server for AnalyticDB MySQL via OpenAPI and direct SQL connection
Openephemeris is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
Open InstallationWhat it does
Model Context Protocol server for the Open Ephemeris astronomical computation API
Quickstart
# 1 — run it from where its publisher ships it
npx -y @openephemeris/mcp-server
# 2 — the plan is chosen at checkout, in the browser
# 3 — ask your agent something
> Model Context Protocol server for the Open Ephemeris astronomical computation API
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. This one runs on your machine: your client starts Openephemeris as a process under your own user, with your files and your network, so the tool surface below is what it can do to your computer rather than to a server somewhere else. It is scanned, signed and pinned to the version you choose — read the surface before you approve it.
This is a public server: you run it yourself and this marketplace is not in the path. Claude Code registers it in one command.
claude mcp add openephemeris-mcp -- npx -y @openephemeris/mcp-serverReconnect, or start a new session, and the tools appear in the model’s tool list.
One config entry your client uses to start the process locally. A local server runs with your file system and your network, which is why it is priced without metering.
31 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
Resolve the IANA timezone for a latitude/longitude pair. Use when you have coordinates but need the timezone to interpret a local birth time. Pass
Takes no parameters.
Recalculates a BaZi Four Pillars chart with new birth data or theme.
Takes no parameters.
Recalculates a bi-wheel chart with new parameters. Supports all modes: synastry, transit, progressed, solar_return, lunar_return, solar_arc.
Takes no parameters.
Event handler called when the user clicks a cross-aspect line in the bi-wheel.
Takes no parameters.
Event handler called when the user clicks a planet in the bi-wheel.
Takes no parameters.
Event handler called when the user clicks a house cusp in the inner wheel of the bi-wheel chart.
Takes no parameters.
Event handler called when the user clicks a planet in the interactive chart wheel.
Takes no parameters.
Event handler called when the user clicks a house cusp or house number in the chart wheel.
Takes no parameters.
Event handler called when the user clicks an aspect line between planets in the chart wheel.
Takes no parameters.
Recalculates the natal chart, solar return, or progressed chart with new parameters (house system, date, location).
Takes no parameters.
Recalculates the Moon Phase dial for a new datetime.
Takes no parameters.
Re-renders a Vedic chart with a different theme (light/dark).
Takes no parameters.
Send a request to any allowlisted Open Ephemeris API endpoint via POST/PUT/PATCH/DELETE.
Takes no parameters.
Generate a classic astrological Chart Wheel image (SVG) for a person/event. This draws a standard circular chart wheel with planets, aspects, and house cusps. The tool returns a native SVG image that Claude displays inline in the conversation — no external tools needed.\n\n
Takes no parameters.
Calculate a midpoint composite chart — an alternative composite method
Takes no parameters.
Calculate an overlay chart — place one person
Takes no parameters.
Calculate active transits to a natal chart — shows which current planets
Takes no parameters.
Analyze the astrological quality of a specific moment: planet positions, aspects,
Takes no parameters.
Find all active aspects between planets at a specific moment. Returns aspect type,
Takes no parameters.
Calculate essential dignities (domicile, exaltation, detriment, fall, peregrine)
Takes no parameters.
Calculate midpoints between all planet pairs for a given date/time and location.
Takes no parameters.
Calculate Arabic Parts / Hermetic Lots (Lot of Fortune, Spirit, etc.)
Takes no parameters.
Calculate chart angles and sensitive points (ASC, MC, DSC, IC, Vertex,
Takes no parameters.
Check the aspect between two ecliptic longitudes. Returns the angular separation
Takes no parameters.
Get Venus Star Points — the Sun-Venus conjunction events nearest to a birth date.
Takes no parameters.
Find all Sun-Venus conjunctions in a date range. Returns each conjunction with
Takes no parameters.
Compute the 8-year Venus Star pattern — the pentagram of 5 Venus-Sun conjunctions
Takes no parameters.
Get the current Venus phase — morning star, evening star, or combust. Returns Venus
Takes no parameters.
Find Venus greatest elongation events (when Venus is farthest from the Sun in the sky).
Takes no parameters.
Find Venus retrograde and direct stations in a date range. Returns the exact
Takes no parameters.
An orientation guide that introduces the Open Ephemeris MCP server,
Takes no parameters.
- 20,000 calls a month, included
- 240 calls a minute at peak
- Every tool the listing has
- Cancel any time — the unused days are credited
- Runs behind the gateway, so cancelling stops it
- 150,000 calls a month, included
- 1,800 calls a minute at peak
- Every tool the listing has
- Cancel any time — the unused days are credited
- Runs behind the gateway, so cancelling stops it
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
No call is billed on its own, and this plan carries no monthly call limit. $25 a month covers every tool at any volume.
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
| Term | Level | What it prices | Points |
|---|---|---|---|
| capability-exposure | minimal | capability blast radius (minimal) — client exposure if the model is manipulated | −0 |
| verification-discount | repo | publisher verification (public source) — no provenance, but the source is public and inspectable | −1 |
| coverage-honesty | source | inspection depth (source) — how much of the target the scan could see | −0 |
What the scan could actually read
A grade is only as meaningful as its coverage, so the scanner publishes its own depth before it publishes its result.
Tools were statically extracted from the published source (10 recovered), not enumerated from a running server. Tool-poisoning, Unicode-smuggling, capability and toxic-flow analysis ran on this inferred surface, but a mis-parsed registration could be missed or mis-attributed, so tool-derived findings are capped below “confirmed”. To grade the real runtime surface, scan the running server: --command "npx -y <package>".
Capability — what it could do if the model were manipulated
Tags derived from each tool’s schema and the implementation, not from what the tool calls itself. minimal is the level these add up to.
| Tool | Capability tags | Why the tag was assigned |
|---|---|---|
| Chart Wheel Explorer | no tags | |
| Human Design Bodygraph Explorer | no tags | |
| Bi-Wheel Explorer | no tags | |
| Moon Phase Explorer | no tags | |
| Transit Timeline Explorer | no tags | |
| Vedic Chart Explorer | no tags | |
| BaZi Four Pillars Explorer | no tags | |
| welcome_to_open_ephemeris | no tags | |
| openephemeris-mcp | no tags | |
| Open Ephemeris | no tags |
Toxic-flow graph
The lethal trifecta, checked as a graph rather than as a checklist: untrusted input, a sensitive source and an external sink have to meet before there is a path worth worrying about.
The public result for this release does not print the flow graph, so there is nothing to show here. That is not the same as "no paths were found": what the scan did read is above, under coverage.
Supply chain and provenance
This is the first scan of this surface here, so there is nothing yet to compare it against.
Every result on this tab comes from one deterministic pass over the published package — offline, rule by rule, and auditable line by line above. Same methodology version, same bytes, same score.
Release history
Pinned to 4.12.0 — the install command below asks for that release. A pin is part of an install, so it is kept for this visit and written down when you install.
No release note was published with this version.
Only accounts with at least 50 real tool calls against this server in the last 90 days can post. Ratings are weighted by how much the reviewer actually uses it, and publishers can reply once per review.
Writing one takes an account with at least 50 real tool calls against Openephemeris in the last 90 days. That is the whole gate — there is no other way to post, which is why the counts beside each review are worth reading.
Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes an account with 50 real tool calls against it.