# GPTsApp Plugins decision brief

## Second Opinion (claude-code)

Format: gptsapp-plugin-decision-brief/1.0.0
Plugin ID: gpa:plugin:c9dcc8562b7aadf757133365348608699edaaea3c9d0ff75574a75c2415c5678
Canonical: https://plugins.gptsapp.io/plugins/claude-code/trailofbits/second-opinion
Source owner: trailofbits
Declared author: Dan Guido (manifest declaration)
Repository: https://github.com/trailofbits/skills
Package root: plugins/second-opinion
Package format: claude-plugin
Documented targets: Claude Code (claude-code)
Documented targets are source declarations, not tested compatibility. Other interfaces remain unknown.
Task scope: All recorded tasks
Recorded tasks: Review code (code-review)

Compare an external-model review route with local review; a separate CLI and provider access are prerequisites.

### Version and observation scope
Workflow-note version: 1.8.0
Workflow-note revision: d3323cefbcf645678b8dc481de204b02ad3d02dc
Workflow-note observation: 2026-09-08T13:38:59.102Z
Manifest version: 1.8.0
Manifest revision: d3323cefbcf645678b8dc481de204b02ad3d02dc
Manifest observation: 2026-09-08T13:38:59.102Z
Component observation scope: d3323cefbcf645678b8dc481de204b02ad3d02dc
A manifest observation does not revalidate older component or prerequisite notes.

### Installation and delivery
Package role: Unknown
Delivery boundary: Claude-format distribution. The publisher describes Codex marketplace compatibility, not a separate native Codex package. Other interfaces and component activation remain unverified.
Access: Choose one external review CLI and confirm its provider access. A bundled local MCP declaration is not an installed tool or a remote connection.
License declaration: Root README declares CC-BY-SA-4.0. This is not a manifest license or file-level clearance; only original reference metadata is retained here.
A license declaration is not a directory redistribution or safety certification.
Maintainer installation: https://github.com/trailofbits/skills
Installation note: Independent maintainer marketplace: trailofbits. Entry: second-opinion. Exact package root: plugins/second-opinion. Review publisher instructions and Claude host requirements; no installation is performed here.
Distribution: trailofbits / second-opinion; path plugins/second-opinion; index revision d3323cefbcf645678b8dc481de204b02ad3d02dc; package revision d3323cefbcf645678b8dc481de204b02ad3d02dc
Distribution evidence: https://raw.githubusercontent.com/trailofbits/skills/d3323cefbcf645678b8dc481de204b02ad3d02dc/.claude-plugin/marketplace.json

### Prerequisites by recorded task
Choose at least 1 option in external-review-tool; alternatives are not all required.
- alternative: Codex CLI is one documented external review option. [Tasks: Review code]
  Evidence: https://raw.githubusercontent.com/trailofbits/skills/d3323cefbcf645678b8dc481de204b02ad3d02dc/plugins/second-opinion/skills/second-opinion/SKILL.md
- alternative: Antigravity CLI is the other documented external review option. [Tasks: Review code]
  Evidence: https://raw.githubusercontent.com/trailofbits/skills/d3323cefbcf645678b8dc481de204b02ad3d02dc/plugins/second-opinion/skills/second-opinion/SKILL.md
- required: The chosen external review tool needs its own configured provider access or subscription. [Tasks: Review code]
  Evidence: https://raw.githubusercontent.com/trailofbits/skills/d3323cefbcf645678b8dc481de204b02ad3d02dc/plugins/second-opinion/skills/second-opinion/SKILL.md
The complete prerequisite inventory has not been established; unknown does not mean optional, free or unnecessary.

### Included components and observation limits
- Individually observed packaged Skill (Skills): Exact file read at d3323cefbcf645678b8dc481de204b02ad3d02dc; a partial sample, not a complete inventory or activation test.
  Recorded members (partial sample, not a complete count): second-opinion
  second-opinion: https://raw.githubusercontent.com/trailofbits/skills/d3323cefbcf645678b8dc481de204b02ad3d02dc/plugins/second-opinion/skills/second-opinion/SKILL.md
- Local-process MCP declaration (MCP configuration): One local-process server declaration was parsed at d3323cefbcf645678b8dc481de204b02ad3d02dc. No remote endpoint identity was established; the command payload was not retained or executed.
  Exact member count: Unknown.
  Configuration evidence: https://raw.githubusercontent.com/trailofbits/skills/d3323cefbcf645678b8dc481de204b02ad3d02dc/plugins/second-opinion/.mcp.json
Included Skill, Agent and Command files are not a request to install duplicate copies. File/configuration presence is not host activation.

### Source issues
No separately recorded issue. This is not a safety review.

### Independent runtime states
Package installed: Not observed
External connection: Not observed
Access authorized: Not observed
Task completed: Not observed
This brief includes no personal prerequisite answers, credentials or runtime checks. No winner, compatibility, safety or authorization verdict.

### Sources
- https://raw.githubusercontent.com/trailofbits/skills/d3323cefbcf645678b8dc481de204b02ad3d02dc/.claude-plugin/marketplace.json
- https://raw.githubusercontent.com/trailofbits/skills/d3323cefbcf645678b8dc481de204b02ad3d02dc/plugins/second-opinion/.claude-plugin/plugin.json
- https://github.com/trailofbits/skills/tree/d3323cefbcf645678b8dc481de204b02ad3d02dc/plugins/second-opinion
- https://raw.githubusercontent.com/trailofbits/skills/d3323cefbcf645678b8dc481de204b02ad3d02dc/README.md
- https://raw.githubusercontent.com/trailofbits/skills/d3323cefbcf645678b8dc481de204b02ad3d02dc/LICENSE
- https://raw.githubusercontent.com/trailofbits/skills/d3323cefbcf645678b8dc481de204b02ad3d02dc/plugins/second-opinion/skills/second-opinion/SKILL.md
- https://raw.githubusercontent.com/trailofbits/skills/d3323cefbcf645678b8dc481de204b02ad3d02dc/plugins/second-opinion/.mcp.json