Grades are a hygiene check, not a security guarantee.

MCP, MCP server

ai.extend/extend

Turn documents into structured data: parse, extract, classify, split, and fill PDF forms.

Compatibility: Portable across standard formats.

Grade D

Two or more Medium findings, or a High finding. Only try it in a sandbox.

Graded by PlugVetRubric v2

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

Rescanned at commit 6ac5cdff5b1f.

INSTALL_REMOTE_SCRIPT

Why this grade

  • INSTALL_REMOTE_SCRIPT High

    Fetches a script from the network and runs it (a pipe to a shell, or an install hook with a URL).

    skills/extend-api/SKILL.md, line 126 curl -fsSL https://extend.ai/install.sh | sh # install script (macOS, Linux)

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.

If you think this grade is wrong, email [email protected] with the entry link and your evidence. We aim to acknowledge within two working days and decide within seven. If we confirm an error, we aim to correct it within 24 hours of confirming it. These are aims, not guarantees.

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

    Serious

    install fetches a script from the network. The docs document an installer that pipes a download into a shell.

    INSTALL_REMOTE_SCRIPT INSTALL_DOCUMENTED_INSTALLER

    skills/extend-api/SKILL.md, line 126

    curl -fsSL https://extend.ai/install.sh | sh # install script (macOS, Linux)

    .github/workflows/sync-skills.yml, line 33

    curl -fsSL https://extend.ai/install.sh | sh

  • Network

    Concern

    can reach api.extend.ai. The description does not name that host.

    NETWORK_UNNAMED_HOST

    skills/extend-api/SKILL.md, line 46

    curl -X POST "https://api.extend.ai/extract" \

    skills/extend-api/SKILL.md, line 776

    curl -X POST "https://api.extend.ai/workflow_runs" \

  • Secrets

    Pass

    No read of a credential file or secret environment variable found.

  • 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 6ac5cdff5b1f. install fetches a script from the network. can reach api.extend.ai. The description does not name that host.

Date and source

Date checked:

View source

github.com

Commit graded: 6ac5cdff5b1f5c791f599cd8593ac20db2201f9d

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