MCP, MCP server
Database Sentinel
Multi-backend database security auditor.
Compatibility: Not stated.
Grade B
Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV OBFUSCATION_ENCODED_BLOB PERMISSION_SHELL_DECLARED SECRETS_ENV_READ
Why this grade
- NETWORK_NO_FIXED_HOST Low
Makes a network call whose host is not written as a fixed address.
database_sentinel/mcp_server/tools.py, line 66
r = httpx.head(f"{t.rest_url}/rest/v1/{table}", params={"select": "*", "limit": "1"}, - SECRETS_PATH_DOTENV Low
Mentions a .env file.
database_sentinel/agent/models.py, line 24
if "/" in o or o.startswith(".env") or o.endswith((".ts", ".js", ".tsx", ".jsx", ".env")): - OBFUSCATION_ENCODED_BLOB Low
Contains a long base64 shaped string in a file that should be readable.
README.md, line 73
**Cursor** [](https://cursor.com/en/install-mcp?name=sentinel&config=eyJzZW50aW5lbCI6eyJjb21tYW5kIjoidXZ4Ii - PERMISSION_SHELL_DECLARED Note
Runs shell commands, and the manifest or description says so.
evals/bench.py, line 22
out = subprocess.run(["supabase", "status", "-o", "json"], cwd=ROOT, capture_output=True, text=True) - SECRETS_ENV_READ Note
Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.
bench/cases/007-storage-and-keys/frontend/src/lib/supabase.ts, line 5
const key = process.env.NEXT_PUBLIC_SUPABASE_SERVICE_ROLE_KEY ?? 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ
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
evals/bench.py, line 22
out = subprocess.run(["supabase", "status", "-o", "json"], cwd=ROOT, capture_output=True, text=True)
evals/bench.py, line 45
subprocess.run(["supabase", "db", "reset"], cwd=ROOT, capture_output=True, check=True)
evals/run.py, line 78
sha = subprocess.run(["git", "rev-parse", "--short", "HEAD"], capture_output=True, text=True).stdout.strip()
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
database_sentinel/mcp_server/tools.py, line 66
r = httpx.head(f"{t.rest_url}/rest/v1/{table}", params={"select": "*", "limit": "1"},
backends/mongodb/mongobleed-probe.md, line 135
with socket.create_connection((host, port), timeout=timeout) as s:
backends/mongodb/mongobleed-probe.md, line 191
with socket.create_connection((host, port), timeout=3) as s:
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
SKILL.md, line 45
--include="*.env*" --include="*.toml" --include="*.ts" --include="*.js" 2>/dev/null \
bench/cases/007-storage-and-keys/frontend/src/lib/supabase.ts, line 5
const key = process.env.NEXT_PUBLIC_SUPABASE_SERVICE_ROLE_KEY ?? 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ
database_sentinel/agent/models.py, line 24
if "/" in o or o.startswith(".env") or o.endswith((".ts", ".js", ".tsx", ".jsx", ".env")):
Show more
SKILL.md, line 56
--include="*.env*" --include="*.ts" --include="*.js" --include="*.py" 2>/dev/null \
SKILL.md, line 61
grep -rE "DATABASE_URL=postgres(ql)?://" --include="*.env*" 2>/dev/null \
SKILL.md, line 67
--include="*.env*" --include="package.json" --include="docker-compose*.yml" 2>/dev/null \
bench/cases/020-newsletter-studio/frontend/src/lib/supabase.ts, line 6
process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!,
database_sentinel/agent/cli.py, line 17
ap.add_argument("--anon-key", default=os.environ.get("SENTINEL_ANON_KEY", ""))
database_sentinel/agent/llm.py, line 15
key = os.environ.get("SENTINEL_API_KEY") or os.environ.get("OPENROUTER_API_KEY") or "not-needed" # local servers ignore it
database_sentinel/agent/usage.py, line 29
if os.environ.get("LANGFUSE_PUBLIC_KEY"):
database_sentinel/mcp_server/server.py, line 95
in JS/TS, Vue, Svelte, HTML, JSON and .env files (skips node_modules, build output and .git).
database_sentinel/mcp_server/target.py, line 20
anon_key=os.environ.get("SENTINEL_ANON_KEY", ""),
database_sentinel/mcp_server/tools.py, line 79
_EXTS = {".js", ".jsx", ".ts", ".tsx", ".mjs", ".cjs", ".vue", ".svelte", ".html", ".json", ".env"}
database_sentinel/mcp_server/tools.py, line 110
if os.path.splitext(f)[1] not in _EXTS and not f.startswith(".env"):
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 73
**Cursor** [](https://cursor.com/en/install-mcp?name=sentinel&config=eyJzZW50aW5lbCI6eyJjb21tYW5kIjoidXZ4Ii
docs/mcp.md, line 53
[](https://cursor.com/en/install-mcp?name=sentinel&config=eyJzZW50aW5lbCI6eyJjb21tYW5kIjoidXZ4IiwiYXJncyI6WyItLWZy
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 8ee8883591ce. 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. contains an encoded blob in a file that should be readable.
Date and source
Date checked:
github.com
Commit graded: 8ee8883591ceb02e21f2c50521966a3ff5c9d5f3
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