MCP, MCP server
io.github.VonderVuflya/yggdrasil
One shared, durable memory for your AI coding agents — local-first, zero-dependency.
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 181d796bc6ca, unchanged since the check below.
INSTALL_REMOTE_SCRIPT
Why this grade
- INSTALL_REMOTE_SCRIPT Medium
Fetches a script from the network and runs it (a pipe to a shell, or an install hook with a URL).
clients/npm/bin/ygg.js, line 45
: spawnSync('sh', ['-c', 'curl -LsSf https://astral.sh/uv/install.sh | sh'], { stdio: 'inherit' });
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.
If you think this grade is wrong, email [email protected] with the entry link and your evidence. We aim to acknowledge within two working days and decide within seven. If we confirm an error, we aim to correct it within 24 hours of confirming it. These are aims, not guarantees.
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
eval/ygg_eval.py, line 319
os.remove(db_path + suffix)
eval/ygg_eval.py, line 377
os.remove(db_path + suffix)
yggdrasil/cli.py, line 166
return subprocess.call(["bash", str(INSTALL_SH), cmd, *rest])
Show more
yggdrasil/cli.py, line 223
out = subprocess.run([agent, "mcp", "list"], capture_output=True, text=True, timeout=10)
yggdrasil/cli.py, line 702
rc = subprocess.call(argv)
yggdrasil/cli.py, line 710
return subprocess.call([ygg_bin, "redeploy"])
yggdrasil/service.py, line 165
proc = subprocess.Popen(argv, **kwargs) # noqa: S603
yggdrasil/service.py, line 228
if subprocess.run(["launchctl", "bootstrap", _launchd_domain(), str(p)],
yggdrasil/service.py, line 230
subprocess.run(["launchctl", "load", "-w", str(p)], capture_output=True)
yggdrasil/service.py, line 233
subprocess.run(["systemctl", "--user", "restart", f"{UNIT}.service"],
yggdrasil/ygg_memory_server.py, line 1520
os.remove(args.db + suffix)
Install and update
Serious
install fetches a script from the network.
INSTALL_REMOTE_SCRIPT
clients/npm/bin/ygg.js, line 45
: spawnSync('sh', ['-c', 'curl -LsSf https://astral.sh/uv/install.sh | sh'], { stdio: 'inherit' });
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
eval/ygg_eval.py, line 351
f" (test: curl $YGG_EMBED_URL/api/embed -d '{{\"model\":\"{emb_model}\",\"input\":\"hi\"}}').\n",
scripts/release.sh, line 201
d = json.load(urllib.request.urlopen(f"https://pypi.org/pypi/yggdrasil-memory/{ver}/json", timeout=10))
scripts/run_gates.sh, line 30
if python3 -c "import urllib.request;urllib.request.urlopen('${YGG_ENGINE_URL}/health',timeout=2)" 2>/dev/null; then break; fi
Show more
yggdrasil/cli.py, line 253
with urllib.request.urlopen(f"{url}/health", timeout=3) as r:
yggdrasil/cli.py, line 396
with urllib.request.urlopen(req, timeout=5) as r:
yggdrasil/cli.py, line 425
with urllib.request.urlopen(req, timeout=3600) as r:
yggdrasil/cli.py, line 618
with urllib.request.urlopen(req, timeout=4) as r:
yggdrasil/install.sh, line 126
if "$PYTHON" -c "import urllib.request,sys;sys.exit(0 if urllib.request.urlopen('${URL}/health',timeout=2) else 1)" 2>/dev/null; then
yggdrasil/install.sh, line 127
"$PYTHON" -c "import urllib.request,json;print(json.load(urllib.request.urlopen('${URL}/health')))"; break
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
yggdrasil/cli.py, line 416
tok = os.environ.get("YGG_ENGINE_TOKEN") or service.token()
yggdrasil/ygg_core.py, line 59
os.environ.get("YGG_ENGINE_TOKEN")
yggdrasil/ygg_core.py, line 60
or os.environ.get("YGG_TOKEN")
Show more
yggdrasil/ygg_cross_agent_demo.py, line 33
TOKEN = os.environ.get("YGG_ENGINE_TOKEN") or "yggdrasil-demo-token"
yggdrasil/ygg_dense_gate.py, line 19
TOKEN = os.environ.get("YGG_ENGINE_TOKEN") or "yggdrasil-demo-token"
yggdrasil/ygg_embeddings.py, line 275
api_key = os.environ.get("YGG_EMBED_API_KEY") or os.environ.get("OPENROUTER_API_KEY") or ""
yggdrasil/ygg_governance_gate.py, line 36
TOKEN = os.environ.get("YGG_ENGINE_TOKEN") or "yggdrasil-demo-token"
yggdrasil/ygg_http_mcp.py, line 44
tok = os.environ.get("YGG_MCP_TOKEN")
integrations/AGENTS.yggdrasil.md, line 19
- Do not save secrets, tokens, passwords, private keys, raw `.env`, or sensitive logs.
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 181d796bc6ca. can delete files. install fetches a script from the network. 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: 181d796bc6ca1502abd4928a18a5eead2b11f4e8
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.