Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Opik Mcp

The official Model Context Protocol (MCP) server for Opik, the open-source LLM observability and evaluation platform, built by Comet. Plug your AI host (Claude Code, Cursor, VS Code Copilot, Codex, opencode, or any

Compatibility: Not stated.

Grade C

One Medium finding. Read the findings before installing.

Graded by PlugVetRubric v2

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

Rescanned at commit d35976d3c439.

NETWORK_HOST_FROM_INPUT

Why this grade

  • NETWORK_HOST_FROM_INPUT Medium

    A file takes a URL or endpoint as input and has no fixed host list.

    scripts/live_alert.py, line 432 with urllib.request.urlopen(request, timeout=20) as response:

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

    scripts/build_skills_pack.py, line 256

    shutil.rmtree(out_root)

    scripts/dev/install_branch.py, line 55

    return subprocess.run(

    scripts/dev/install_branch.py, line 71

    shutil.rmtree(path, ignore_errors=True)

    Show more

    scripts/dev/install_branch.py, line 141

    result = subprocess.run(command, cwd=cwd, capture_output=True, text=True, check=False)

    scripts/dev/install_branch.py, line 164

    subprocess.run(["claude", "mcp", "get", server], cwd=root, capture_output=True).returncode

    scripts/dev/install_branch.py, line 287

    result = subprocess.run(

    src/opik_mcp/analytics/environment.py, line 271

    out = subprocess.run(

    src/opik_mcp/analytics/environment.py, line 287

    out = subprocess.run(

    src/opik_mcp/analytics/process_ancestry.py, line 131

    out = subprocess.run(

    src/opik_mcp/analytics/process_ancestry.py, line 150

    out = subprocess.run(

    src/opik_mcp/skills/opik-compare/evals/run_evals.py, line 117

    shutil.rmtree(wd)

    src/opik_mcp/skills/opik-diagnose/evals/run_evals.py, line 106

    shutil.rmtree(wd)

    src/opik_mcp/skills/opik-evaluate/evals/run_evals.py, line 115

    shutil.rmtree(wd)

    src/opik_mcp/skills/opik-explain/evals/run_evals.py, line 116

    shutil.rmtree(wd)

    src/opik_mcp/skills/opik-instrument/evals/run_evals.py, line 95

    shutil.rmtree(wd)

    src/opik_mcp/skills/opik-online-eval/evals/run_evals.py, line 112

    shutil.rmtree(wd)

  • Install and update

    Note

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

    INSTALL_DOCUMENTED_INSTALLER

    README.md, line 91

    curl -LsSf https://astral.sh/uv/install.sh | sh # macOS / Linux

    legacy/typescript/MIGRATION.md, line 40

    curl -LsSf https://astral.sh/uv/install.sh | sh # macOS / Linux

  • Network

    Serious

    accepts a host from input, with no fixed list in this file. can reach a host that is not written as a fixed address.

    NETWORK_HOST_FROM_INPUT NETWORK_NO_FIXED_HOST

    scripts/live_alert.py, line 432

    with urllib.request.urlopen(request, timeout=20) as response:

    scripts/live_alert.py, line 509

    with urllib.request.urlopen(request, timeout=20) as response:

    scripts/seed_e2e_backend.py, line 1107

    while rows := fetch():

    Show more

    scripts/skills_trigger_eval.py, line 103

    with urllib.request.urlopen(req, timeout=180) as r:

    src/opik_mcp/client/base.py, line 137

    resp = await http.request("GET", url, params=params, headers=self._headers())

    src/opik_mcp/client/base.py, line 200

    resp = await http.request(

    src/opik_mcp/client/base.py, line 228

    resp = await http.request(method, url, content=content, headers=self._headers())

    src/opik_mcp/client/base.py, line 268

    return await http.request(method, url, content=content, headers=headers)

    src/opik_mcp/skills/opik/references/tracing-rest-api.md, line 23

    curl -X GET 'http://localhost:5173/api/v1/private/projects'

    src/opik_mcp/skills/opik/references/tracing-rest-api.md, line 30

    curl -X GET 'https://www.comet.com/opik/api/v1/private/projects' \

    src/opik_mcp/skills/opik/references/tracing-rest-api.md, line 45

    curl -X POST 'https://www.comet.com/opik/api/v1/private/traces' \

    src/opik_mcp/skills/opik/references/tracing-rest-api.md, line 81

    curl -X PATCH 'https://www.comet.com/opik/api/v1/private/traces/550e8400-e29b-41d4-a716-446655440000' \

    src/opik_mcp/skills/opik/references/tracing-rest-api.md, line 98

    curl -X POST 'https://www.comet.com/opik/api/v1/private/spans' \

    src/opik_mcp/skills/opik/references/tracing-rest-api.md, line 137

    curl -X POST 'https://www.comet.com/opik/api/v1/private/spans/batch' \

    src/opik_mcp/skills/opik/references/tracing-rest-api.md, line 170

    curl -X POST 'https://www.comet.com/opik/api/v1/private/traces/feedback-scores' \

    src/opik_mcp/skills/opik/references/tracing-rest-api.md, line 204

    curl -X GET 'https://www.comet.com/opik/api/v1/private/traces/550e8400-e29b-41d4-a716-446655440000' \

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    scripts/live_alert.py, line 424

    token = os.environ.get("GH_TOKEN")

    scripts/seed_e2e_backend.py, line 694

    return cls(base, workspace, os.environ.get("OPIK_API_KEY") or None)

    scripts/skills_trigger_eval.py, line 76

    key = os.environ.get("OPENAI_API_KEY")

    Show more

    src/opik_mcp/skills/opik/references/tracing-typescript.md, line 130

    const openai = new OpenAI({ apiKey: process.env.OPENAI_API_KEY });

    src/opik_mcp/skills/opik-instrument/evals/grader.py, line 65

    # new files the agent added (e.g. .env, config) also count as instrumentation work

    .claude/settings.json, line 35

    "Read(./.env)",

    .dockerignore, line 18

    .env

    .gitignore, line 32

    .env

    .gitignore, line 33

    .env.local

  • Agent instructions

    Pass

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

  • Obfuscation

    Note

    the file cap was reached before every file was read.

    OBFUSCATION_FILE_CAP_REACHED

    tests/hermetic/fixtures/compare_row.json, line 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 d35976d3c439. can delete files. accepts a host from input, with no fixed list in this file. can reach a host that is not written as a fixed address. reads a credential or environment file. the file cap was reached before every file was read.

Date and source

Date checked:

View source

github.com

Commit graded: d35976d3c439ab962a75361da25dedabec8858aa

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