Chroma’s official MCP server: vector search and collection management for RAG workflows.
Nothing to run from here
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.
99/100
trust score
14
downloads a day
local
runs on your machine
2k
downloads in 30d
What it does
Model Context Protocol server for the Open Ephemeris astronomical computation API
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user openephemeris-mcp '--' npx -y @openephemeris/mcp-server
# 2 — ask your agent for something these tools do
# timezone_resolve, bazi_recalculate, bi_wheel_recalculate and 29 more
Openephemeris costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Publishernot claimed
OPAll 2 servers
@openephemeris2 servers
2 categories
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Installation
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. Its scan result is on the Security tab — read the surface before you approve it.
Claude Codedeclared by this listing
This is a public server: you run it yourself and this marketplace is not in the path. You need Node.js — the current LTS (24) is the safe choice; npx comes with it. Claude Code registers it in one command; --scope user makes it available in every project. The '--' is in quotes so that PowerShell passes it on.
claude mcp add --scope user openephemeris-mcp '--' npx -y @openephemeris/mcp-serverReconnect, or start a new session, and the tools appear in the model’s tool list.
Free on mcprush, and it runs from its publisher’s own package: this marketplace is not in the path, so there is no key of ours to hold and no card to add.
What it writes
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.
What you approve
32 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
No parameter schema on file.
Recalculates a BaZi Four Pillars chart with new birth data or theme.
No parameter schema on file.
Recalculates a bi-wheel chart with new parameters. Supports all modes: synastry, transit, progressed, solar_return, lunar_return, solar_arc.
No parameter schema on file.
Event handler called when the user clicks a cross-aspect line in the bi-wheel.
No parameter schema on file.
Event handler called when the user clicks a planet in the bi-wheel.
No parameter schema on file.
Event handler called when the user clicks a house cusp in the inner wheel of the bi-wheel chart.
No parameter schema on file.
Event handler called when the user clicks a planet in the interactive chart wheel.
No parameter schema on file.
Event handler called when the user clicks a house cusp or house number in the chart wheel.
No parameter schema on file.
Event handler called when the user clicks an aspect line between planets in the chart wheel.
No parameter schema on file.
Recalculates the natal chart, solar return, or progressed chart with new parameters (house system, date, location).
No parameter schema on file.
Recalculates the Moon Phase dial for a new datetime.
No parameter schema on file.
Re-renders a Vedic chart with a different theme (light/dark).
No parameter schema on file.
Send a request to any allowlisted Open Ephemeris API endpoint via POST/PUT/PATCH/DELETE.
No parameter schema on file.
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.
No parameter schema on file.
Calculate a midpoint composite chart — an alternative composite method
No parameter schema on file.
Calculate an overlay chart — place one person
No parameter schema on file.
Calculate active transits to a natal chart — shows which current planets
No parameter schema on file.
Analyze the astrological quality of a specific moment: planet positions, aspects,
No parameter schema on file.
Find all active aspects between planets at a specific moment. Returns aspect type,
No parameter schema on file.
Calculate essential dignities (domicile, exaltation, detriment, fall, peregrine)
No parameter schema on file.
Calculate midpoints between all planet pairs for a given date/time and location.
No parameter schema on file.
Calculate Arabic Parts / Hermetic Lots (Lot of Fortune, Spirit, etc.)
No parameter schema on file.
Calculate chart angles and sensitive points (ASC, MC, DSC, IC, Vertex,
No parameter schema on file.
Check the aspect between two ecliptic longitudes. Returns the angular separation
No parameter schema on file.
Get Venus Star Points — the Sun-Venus conjunction events nearest to a birth date.
No parameter schema on file.
Find all Sun-Venus conjunctions in a date range. Returns each conjunction with
No parameter schema on file.
Compute the 8-year Venus Star pattern — the pentagram of 5 Venus-Sun conjunctions
No parameter schema on file.
Get the current Venus phase — morning star, evening star, or combust. Returns Venus
No parameter schema on file.
Find Venus greatest elongation events (when Venus is farthest from the Sun in the sky).
No parameter schema on file.
Find Venus retrograde and direct stations in a date range. Returns the exact
No parameter schema on file.
An orientation guide that introduces the Open Ephemeris MCP server,
No parameter schema on file.
No parameter schema on file.
Free
$0 forever
- Every tool, no call limit
- No card, and mcprush charges nothing for it
- Source published under MIT
- Runs on your machine — nothing of it reaches our gateway
- Nothing to cap, because mcprush bills nothing
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
Nothing here is billable: mcprush charges nothing to install Openephemeris or to call it, at any volume.
Call allowance · this installenforced at the gateway
Monthly allowance, in calls
—
—
Alert at 80% · then the tool returns a normal MCP error
Used this month: —
ATrust score 99 / 100
Release 4.21.0 · scanned 14 Oct 2026
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.
Threat score100
Client score99
Findings0 threat · 0 capability
Capabilityminimal
Coveragesource
Verificationrepo
Surface digestce7b7798692789b9d284bde92dbe5daeb399bd2594a82959996a33cb0be553aa
Score vectorthreat 100 → client 99
| 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 |
score = clamp(round(threatScore − E_cap − E_ver − E_cov), 0, 100). No model, no opinion, no network call at scoring time: the same methodology version against the same bytes always produces this number, and every line above is a field of the report rather than a summary of it.
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.
Tool surfaceread
Implementation sourceread
Package metadataread
Live transportnot available
Tools were statically extracted from the published source (1 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 |
|---|---|---|
| openephemeris-mcp | 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
Integrityfirst-seen
Surface digestce7b7798692789b9
Scanned2026-10-14
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
Always latest — the install command names no version, so it installs the newest release when it runs; the current release on file is 4.21.0. Pin a release below and the command asks for exactly that one.
4.21.0
1 Oct 2026
latestNo release note was published with this version.
4.20.0
28 Sep 2026
No release note was published with this version.
4.17.0
24 Sep 2026
No release note was published with this version.
4.16.0
22 Sep 2026
No release note was published with this version.
4.15.1
11 Sep 2026
No release note was published with this version.
4.15.0
3 Sep 2026
No release note was published with this version.
4.14.3
undated
- The version this listing was on when mcprush began following its releases. The registry was not asked when it shipped, so this row carries no date.
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Who can review
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Sign in to write one
Any signed-in account that does not publish Openephemeris can review it, once — before installing it or after. A review from an account that has installed it is marked as one.
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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 a signed-in account that does not publish it, and nothing else.