Grades are a hygiene check, not a security guarantee.

Claude Code, Skill

Mcp Server Servicenow

ServiceNow MCP server for Claude Code, GitHub Copilot, Codex and any MCP client: Table API, CMDB, schema, aggregates and update sets, plus four Agent Skills.

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 INSTALL_DOCUMENTED_INSTALLER OBFUSCATION_FILE_OVER_READ_CAP

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    actions/validate-skills/check_citations.py, line 48 proc = subprocess.run(

  • NETWORK_NO_FIXED_HOST Low

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

    src/servicenow_mcp/auth/auth_manager.py, line 120 response = requests.post(

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    .dockerignore, line 1 .env

  • INSTALL_DOCUMENTED_INSTALLER Note

    Documentation shows an installer that pipes a download into a shell.

    docs/clients.md, line 3 uns the server without installing it): `curl -LsSf https://astral.sh/uv/install.sh | sh` on macOS/Linux, `winget install astral

  • 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

    actions/validate-skills/check_citations.py, line 48

    proc = subprocess.run(

    actions/validate-skills/check_citations.py, line 79

    subprocess.run(

    actions/validate-skills/check_citations.py, line 85

    subprocess.run(

    Show more

    actions/validate-skills/check_citations.py, line 123

    shutil.rmtree(repo, ignore_errors=True)

    src/servicenow_mcp/eval_kit.py, line 235

    out = subprocess.run(

    src/servicenow_mcp/eval_kit.py, line 336

    shutil.rmtree(out_dir) # an earlier copy: replace it, so it can't go stale

    .github/workflows/ci.yml, line 126

    git = lambda *a: subprocess.run(["git", *a], capture_output=True).returncode

  • Install and update

    Note

    The docs document an installer that pipes a download into a shell.

    INSTALL_DOCUMENTED_INSTALLER

    docs/clients.md, line 3

    uns the server without installing it): `curl -LsSf https://astral.sh/uv/install.sh | sh` on macOS/Linux, `winget install astral

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    src/servicenow_mcp/auth/auth_manager.py, line 120

    response = requests.post(

    src/servicenow_mcp/auth/auth_manager.py, line 159

    response = requests.post(

    src/servicenow_mcp/utils/http.py, line 144

    response = requests.request(

    Show more

    src/servicenow_mcp/utils/http.py, line 198

    response = requests.request(

    .github/copilot-instructions.md, line 17

    2. **All API calls go through `make_sn_request()`** - Handles per-user OAuth tokens (proxy mode) vs global auth. Never call `requests.get()` directly.

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    src/servicenow_mcp/skill_lint.py, line 1222

    report.add("error", where, None, f"mcpServers.{name}.env must be an object")

    src/servicenow_mcp/skill_lint.py, line 1230

    f"mcpServers.{name}.env.{key} is not a setting of this server "

    .dockerignore, line 1

    .env

    Show more

    src/servicenow_mcp/skill_lint.py, line 1236

    "error", where, None, f"mcpServers.{name}.env.{key} must be a string"

    src/servicenow_mcp/skill_lint.py, line 1245

    f"mcpServers.{name}.env.{key} sets a host or default: use ${{{key}}}, "

    src/servicenow_mcp/skill_lint.py, line 1253

    f"mcpServers.{name}.env.{key} holds a literal value or default: "

    src/servicenow_mcp/skill_lint.py, line 1262

    f"mcpServers.{name}.env.{key}={value!r} {safe[1]}",

    .gitignore, line 1

    .env

  • 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 09e5cbc06449. can delete files. The docs document an installer that pipes a download into a shell. 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: 09e5cbc06449f99b80cce7ad8cf5c5b486424238

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