Grades are a hygiene check, not a security guarantee.

MCP, MCP server

io.github.GreptimeTeam/greptimedb-mcp-server

A Model Context Protocol (MCP) server for GreptimeDB — an open-source observability database that handles metrics, logs, and traces in one engine.

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.

Rescanned at commit 5347e7e38002, unchanged since the check below.

NETWORK_NO_FIXED_HOST SECRETS_ENV_READ

Why this grade

  • NETWORK_NO_FIXED_HOST Low

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

    src/greptimedb_mcp_server/semantics.py, line 571 def fetch(self, cursor, table_schema: str, table_name: str) -> dict:

  • SECRETS_ENV_READ Note

    Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.

    src/greptimedb_mcp_server/config.py, line 155 default=os.getenv("GREPTIMEDB_PASSWORD", ""),

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

    Pass

    No shell or command execution found, and no extra permission was declared.

  • 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

    src/greptimedb_mcp_server/semantics.py, line 571

    def fetch(self, cursor, table_schema: str, table_name: str) -> dict:

    src/greptimedb_mcp_server/semantics.py, line 608

    # Unlike fetch(), a failure here has nothing to degrade to, so the

    src/greptimedb_mcp_server/server.py, line 747

    state.table_semantics.fetch(cursor, table_schema, table_name)

  • Secrets

    Note

    reads an environment variable.

    SECRETS_ENV_READ

    src/greptimedb_mcp_server/config.py, line 155

    default=os.getenv("GREPTIMEDB_PASSWORD", ""),

  • 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.md).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

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Note

Hygiene check of commit 5347e7e38002. can reach a host that is not written as a fixed address. reads an environment variable.

Date and source

Date checked:

View source

github.com

Commit graded: 5347e7e380027814fb7b70fc15f08fc380b76d26

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Read how this letter is chosen