MCP, MCP server
Open Ephemeris
Use it in Claude: add https://mcp.openephemeris.com/mcp as a custom connector (leave the OAuth Client ID and Secret blank) or install the Open Ephemeris plugin from the Claude directory.
Compatibility: Not stated.
Grade C
One Medium finding. Read the findings before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
Rescanned at commit 4fa7e15d8bcd.
SECRETS_PATH_CREDENTIAL
Why this grade
- SECRETS_PATH_CREDENTIAL Medium
Mentions a credential store path (~/.ssh, id_rsa, .npmrc, .aws/credentials, credentials.json, .netrc).
SETUP.md, line 245
Credentials are cached in `~/.openephemeris/credentials.json` and auto-refresh when expired.
Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.
Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.
What was checked
Plain notes from the hygiene checks.
Permissions
Pass
No shell or command execution found, and no extra permission was declared.
Install and update
Pass
No install-time script found, and dependencies are pinned or absent.
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
python/01_calculate_natal_geo.py, line 40
response = requests.post(url, headers=headers, json=payload, params=params)
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_CREDENTIAL
python/01_calculate_natal_geo.py, line 8
API_KEY = os.getenv("OPENEPHEMERIS_API_KEY", "your_test_key_here")
typescript/01_astrocartography.ts, line 9
const API_KEY = process.env.OPENEPHEMERIS_API_KEY || "test_key_xyz";
SETUP.md, line 245
Credentials are cached in `~/.openephemeris/credentials.json` and auto-refresh when expired.
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Concern
contains an encoded blob in a file that should be readable.
OBFUSCATION_ENCODED_BLOB
README.md, line 131
[](cursor://anysphere.cursor-deeplink/mcp/install?name=openephemeris&config=eyJjb21tYW5kIjoibnB4IiwiYXJ
Licence
Pass
A licence file is present (LICENSE).
Maintainer activity
Pass
The latest commit is within the last 365 days.
Note
Hygiene check of commit 4fa7e15d8bcd. can reach a host that is not written as a fixed address. reads a credential or environment file. contains an encoded blob in a file that should be readable.
Date and source
Date checked:
github.com
Commit graded: 4fa7e15d8bcd2f7eb22f2a940d8aaca46a31bf12
This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.