Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Astrodynamics Mcp

A Model Context Protocol server that gives any MCP-capable LLM client (Claude Code, Cursor, ChatGPT desktop, custom agents) authoritative astrodynamics tools: TLE/SGP4 propagation, Lambert solving, ground-station access, time-scale and coordinat

Compatibility: Not stated.

Grade B

Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

PERMISSION_DELETE_FILES NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV OBFUSCATION_FILE_OVER_READ_CAP

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    src/astrodynamics_mcp/runs.py, line 303 shutil.rmtree(entry.output_dir, ignore_errors=True)

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    eval/_spice_kernels.py, line 77 await resolved.fetch(url)

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    docs/credentials.md, line 34 them in your shell, your `.env`, or your MCP client's server config

  • OBFUSCATION_FILE_OVER_READ_CAP Note

    A file was over the read cap and was not fully read.

    uv.lock, line 1 version = 1

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

    Concern

    can delete files.

    PERMISSION_DELETE_FILES

    src/astrodynamics_mcp/runs.py, line 303

    shutil.rmtree(entry.output_dir, ignore_errors=True)

    src/astrodynamics_mcp/tools/gmat.py, line 1056

    shutil.rmtree(workspace, ignore_errors=True)

  • 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

    eval/_spice_kernels.py, line 77

    await resolved.fetch(url)

    src/astrodynamics_mcp/spice_kernels.py, line 202

    async def fetch(

    src/astrodynamics_mcp/spice_kernels.py, line 278

    assert self._dir is not None # fetch() guards the disabled case

    Show more

    src/astrodynamics_mcp/tools/spice.py, line 506

    local_path = await kernel_cache.fetch(source)

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    .gitignore, line 17

    env/

    docs/credentials.md, line 34

    them in your shell, your `.env`, or your MCP client's server config

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Note

    a file was over the read cap and was not fully read.

    OBFUSCATION_FILE_OVER_READ_CAP

    uv.lock, line 1

    version = 1

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit 5ef20e773fb0. can delete files. can reach a host that is not written as a fixed address. reads a credential or environment file. a file was over the read cap and was not fully read.

Date and source

Date checked:

View source

github.com

Commit graded: 5ef20e773fb09622f886fe7504614380128f61f1

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.

Read how this letter is chosen