Versioned security assessment

Report ID: SA-1727EE59

6/30/2026, 6:09:45 PM

slack-gif-creator security assessment v2

Skill Security Certification Report

Audit History
Audit model: codex Historical report
Skill name
slack-gif-creator
Version
v2
Maintainer
sickn33
Source
github.com/sickn33/antigravity-awesome-skills/tree/main/skills/slack-gif-creator
Coverage
7 Files scanned · 1,280 Lines analyzed
Policy version
Unavailable

Confirmed finding summary

No confirmed security findings

The completed audit recorded no confirmed security findings. This is not proof that the Skill has no side effects.

Installation context

Historical evidence

This report may not describe the currently installable artifact. Open the current Skill page for install guidance.

Open current Skill page

This report does not block or authorize the manifest or ZIP.

Static analysis reported many high-risk patterns, but review found the C2, weak cryptography, network, and reconnaissance alerts are false positives from animation wording, constants, Markdown code fences, and Apache License text. The real risks are low: the skill provides executable Python examples, documents a pip install command, and writes GIF files to local paths. No evidence found of malicious intent, prompt injection, data exfiltration, or unauthorized network behavior.

Report position

Historical report

Open audit history before using this report to install.

Audit attestation

Not attestable

The required immutable binding is incomplete.

Human verification

Not verified

No human verification is recorded for this report.

Coverage

7 Files scanned · 1,280 Lines analyzed

2 items shown for review

Limitations

This report does not claim runtime or sandbox execution and does not prove the absence of side effects.

Evidence chain

Follow the evidence from source binding to the install contract. Available evidence supports verification; it is not a safety guarantee.

  1. Source

    Binding unavailable

  2. Artifact

    Identity incomplete

  3. Audit

    Complete

  4. Install contract

    Open manifest to verify

    Open manifest

Capabilities observed

Observed means this report recorded supporting evidence. Not recorded does not prove that a capability is absent.

Contains scripts

May execute code included with the Skill.

Observed in 3 evidence locations

Network access

May connect to external services.

Not recorded by this audit

Filesystem access

May read or write local files.

Observed in 2 evidence locations

Env variables

May read values from the process environment.

Not recorded by this audit

External commands

May invoke commands or programs outside the Skill.

Observed in 1 evidence location

Capability review items (2)
Low
SKILL.md:252-254
Dependency Installation Command Requires User Consent
Verdict: TRUE_POSITIVE low risk. The skill documents a pip install command for Pillow, imageio, imageio-ffmpeg, and NumPy. Installing packages can execute package manager behavior, but no hidden install script was found in the skill.
The command is explicit and limited to known image-processing dependencies. The risk is supply chain exposure from dependency installation, not malicious code in the skill itself.
Low
SKILL.md:52-58core/gif_builder.py:162-228
Local Filesystem Access for GIF Inputs and Outputs
Verdict: TRUE_POSITIVE low risk. The workflow opens local image files and writes GIF output paths. This is expected for GIF creation, but users should run it in trusted working directories.
The file access is visible and directly related to image input and GIF output. There is no evidence that the paths are used for stealthy file discovery or exfiltration.

Risk findings

Confirmed security concerns are separated from items that still need review.

No confirmed security findings were recorded for this completed audit.

Expert evidence

Immutable subject identity, scanner metadata, dismissed matches, and source-level evidence.

Artifact subject

Marketplace commit
Unavailable
Content hash
Unavailable
Tree hash
Unavailable
Skill path
Unavailable
Audit payload hash
Unavailable

Analysis metadata

Audit model: codex

Analysis state: Complete

Scope is limited to the recorded files, lines, methods, and evidence. No runtime or sandbox execution is claimed.

Static false positives ignored (2)
Low
core/easing.py:5core/easing.py:157-160core/frame_composer.py:5core/frame_composer.py:19core/gif_builder.py:5LICENSE.txt:61LICENSE.txt:107LICENSE.txt:141-146LICENSE.txt:186SKILL.md:3SKILL.md:236-242
Static Malware Indicators Are False Positives
Verdict: FALSE_POSITIVE. The flagged lines are animation easing constants, module descriptions, and Apache License text. No evidence found of cryptography, command-and-control behavior, or reconnaissance.
The cited code contains animation math, descriptive text, or standard license wording. Review found no network endpoint, encryption routine, host probing, or control channel at those locations.
Low
SKILL.md:24-43SKILL.md:113-160SKILL.md:164-232
Markdown Code Blocks Misclassified as Backtick Execution
Verdict: FALSE_POSITIVE. Most external command alerts are fenced Python examples and inline Python expressions in SKILL.md, not Ruby or shell backtick execution.
The surrounding Markdown shows normal documentation examples for PIL drawing, GIF validation, easing, and animation concepts. They are not hidden command substitution or shell execution patterns.

Verify and export

JSON report CITATION.cff SARIF 2.1.0 Signed installation manifest

The manifest and lockfile bind install artifacts to cryptographic hashes. This integrity claim is separate from the security assessment.

Audit attestation: not_attestable