Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Mcp Persist

When an MCP client reconnects, the server has to replay the events it missed, and with only the SDK's in-memory EventStore, that replay is impossible: the session lived in one process's memory, so a restart or a reconnect to a different worker loses it.

Compatibility: Not stated.

Grade C

One Medium finding. Read the report before installing.

Graded by PlugVetRubric v2

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

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.

    src/mcp_persist/_admin.py, line 564 records = await pool.fetch(

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

    Serious

    accepts a host from input, with no fixed list in this file.

    NETWORK_HOST_FROM_INPUT

    src/mcp_persist/_admin.py, line 564

    records = await pool.fetch(

    src/mcp_persist/dashboard.py, line 375

    const r = await fetch(url);

    src/mcp_persist/postgres.py, line 450

    rows = await self._pool.fetch(

    Show more

    src/mcp_persist/postgres.py, line 640

    rows = await self._pool.fetch(

    src/mcp_persist/postgres.py, line 785

    rows = await self._pool.fetch(

    src/mcp_persist/postgres.py, line 1044

    rows = await self._pool.fetch(

    src/mcp_persist/postgres.py, line 1063

    rows = await self._pool.fetch(

    src/mcp_persist/postgres.py, line 1095

    rows = await self._pool.fetch(

    src/mcp_persist/records.py, line 663

    rows = await self._pool.fetch(f"{self._insert_sql} RETURNING 1", *self._columns(records))

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_UNCONFIRMED

    .gitignore, line 14

    venv/

  • 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.

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Note

Hygiene check of commit 2cf11984dcc3. accepts a host from input, with no fixed list in this file. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: 2cf11984dcc36f641d6c50885d98f6cc151c6ec5

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