Versioned security assessment

Report ID: SA-49BC233D

5/18/2026, 9:24:42 AM

video-extend security assessment v1

Skill Security Certification Report

Audit History
Audit model: claude Historical report
Skill name
video-extend
Version
v1
Maintainer
agentspace-so
Source
github.com/agentspace-so/runcomfy-agent-skills/tree/main/video-extend/
Coverage
1 Files scanned · 156 Lines analyzed
Policy version
Unavailable

Highest confirmed finding severity

Low

1 confirmed security finding requires attention.

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.

All 78 static analysis findings are FALSE POSITIVES. The static analyzer misinterpreted Markdown backtick formatting (inline code) as Ruby shell backtick execution in this Markdown documentation file. All URL references are legitimate documentation links to RunComfy service, model catalog, and related skills. The single filesystem reference documents token storage for user awareness. The skill is a legitimate video extension tool that uses the runcomfy CLI and Google Veo 3-1 models. No malicious intent, prompt injection attempts, or obfuscated behavior detected. Skill uses external commands, network access, and filesystem access as documented and expected for this type of tool.

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

1 Files scanned · 156 Lines analyzed

3 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.

Not recorded by this audit

Network access

May connect to external services.

Observed in 4 evidence locations

Filesystem access

May read or write local files.

Observed in 1 evidence location

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 3 evidence locations

Capability review items (2)
Low
SKILL.md:17SKILL.md:25SKILL.md:113-114SKILL.md:151-155
Documentation URLs flagged as hardcoded network endpoints
24 URL references were flagged as hardcoded network endpoints. These are legitimate documentation links to the RunComfy homepage, model catalog, API documentation, and related skill pages. They serve as user reference material, not executable network requests.
All URLs point to runcomfy.com, skills.sh, or docs.runcomfy.com domains which are the legitimate service provider and documentation sites. UTM parameters confirm marketing attribution, not malicious tracking.
Low
SKILL.md:140
Token storage documentation flagged as filesystem access
Line 140 references ~/.config/runcomfy/token.json in the Security & Privacy section to document where the runcomfy login command stores authentication tokens. This is transparency documentation, not actual file system access code.
The reference appears in a dedicated Security & Privacy section that explains token storage to the user. The skill accesses RUNCOMFY_TOKEN env var, but documents the credential file path for user awareness.

Risk findings

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

Confirmed security concerns (1)

RISK-001 Low
SKILL.md:53SKILL.md:58
Usage guidance misidentified as system reconnaissance
Lines 53 and 58 contain usage guidance comparing the standard Veo 3-1 Extend and Fast Extend model tiers. These advise when to use each endpoint for cost control, not reconnaissance.
The lines discuss model endpoint selection based on quality vs cost trade-offs. No system commands, environment queries, or diagnostic operations are present.

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: claude

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
SKILL.md:7-8SKILL.md:23SKILL.md:42SKILL.md:66-67SKILL.md:105-107SKILL.md:135SKILL.md:151-155
Markdown backticks misidentified as shell execution
The static analyzer flagged 44 instances of backtick characters in SKILL.md as Ruby shell backtick execution. The file is a Markdown document where backticks are used for inline code formatting (e.g., `runcomfy`, `extend-video`). These are not code execution constructs.
Backticks in a .md file are Markdown formatting, not Ruby code. The file has no Ruby code, no .rb extension, and no require/inherit Ruby constructs.
Low
SKILL.md:5SKILL.md:9SKILL.md:82SKILL.md:120
Weak cryptographic algorithm false positive
Lines flagged for weak crypto (lines 5, 9, 82, 120) contain only YAML frontmatter license field and plain English text about prompting tips and exit codes. No cryptographic algorithms exist in the file.
No base64-encoded strings, cipher references, or cryptographic function calls exist in the SKILL.md file. The analyzer appears to have false-triggered on unrelated content.

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