MCP, MCP server
crucible
crucible, an MCP server listed in the PlugVet directory.
Compatibility: Not stated.
Grade C
One Medium finding. Read the report before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
SECRETS_PATH_CREDENTIAL
Why this grade
- SECRETS_PATH_CREDENTIAL Medium
Mentions a credential store path (~/.ssh, id_rsa, .npmrc, .aws/credentials, credentials.json, .netrc).
scripts/build_client_package.py, line 62
if name.lower().startswith(".env") or name.lower() in {"credentials", "credentials.json", "secrets", "secrets.json"} or path.suffix.lower() in {".key", ".pem", ".pfx", ".p12"}:
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
Note
requests shell access. The manifest names this permission.
PERMISSION_SHELL_DECLARED
client-plugin/server/src/crucible/client_mcp.py, line 106
if event == "subprocess.Popen" and command is not None:
client-plugin/server/src/crucible/client_mcp.py, line 114
if event.startswith("socket.") or event in {"subprocess.Popen", "os.system", "os.posix_spawn", "os.posix_spawnp",
client-plugin/server/src/crucible/proof_measure.py, line 35
proc = subprocess.run(list(cmd), capture_output=True, text=True, timeout=_CHECK_TIMEOUT)
Show more
client-plugin/server/src/crucible/subprocess_edges.py, line 125
proc = subprocess.Popen(command, stdin=stdin, stdout=stdout, stderr=subprocess.DEVNULL,
client-plugin/server/src/crucible/subprocess_edges.py, line 147
def _wait_bounded(proc: subprocess.Popen, stdout_path: str, timeout: float, max_output_bytes: int) -> None:
client-plugin/server/src/crucible/subprocess_edges.py, line 164
def _terminate(proc: subprocess.Popen) -> None:
scripts/build_client_package.py, line 38
return subprocess.check_output(["git", "-C", str(ROOT), *args], text=True).strip()
scripts/build_client_package.py, line 184
subprocess.run(command, cwd=ROOT, env=env, stdout=log, stderr=subprocess.STDOUT, check=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
.github/workflows/release.yml, line 148
with urllib.request.urlopen(urllib.request.Request(url, headers=headers)) as r:
.github/workflows/release.yml, line 163
data = urllib.request.urlopen(req).read()
Secrets
Concern
reads a credential or environment file.
SECRETS_PATH_CREDENTIAL SECRETS_PATH_DOTENV
scripts/build_client_package.py, line 62
if name.lower().startswith(".env") or name.lower() in {"credentials", "credentials.json", "secrets", "secrets.json"} or path.suffix.lower() in {".key", ".pem", ".pfx", ".p12"}:
.gitignore, line 1
.env
.gitignore, line 20
# The committed template must survive the .env.* rule above (global standard)
Show more
.gitignore, line 21
!.env.example
CONTRIBUTING.md, line 10
- Do not commit secrets, `.env` files, private corpus material, or generated caches.
docs/RELEASE-READINESS.md, line 69
Secret hygiene is mechanical at the release gate: no committed credentials, `.env` stays ignored,
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Pass
No encoded or minified payload found.
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 82aacb24b7e2. requests shell access. The manifest names this permission. can reach a host that is not written as a fixed address. reads a credential or environment file.
Date and source
Date checked:
github.com
Commit graded: 82aacb24b7e2647e9814f4719e4ebdaa713cb077
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