written by ForgeCat

01. Core Development
Core agents for application architecture, cross-layer implementation, UI work, and protocol-specific development.
Tags
Installation
npx forgecat install @forgecat/voltagent_awesome-codex-subagents_core-development
Agents
- api-designer — Use when a task needs API contract design, evolution planning, or compatibility review before implementation starts.
gpt-5.4 Core Development
- backend-developer — Use when a task needs scoped backend implementation or backend bug fixes after the owning path is known.
gpt-5.4 Core Development
- code-mapper — Use when the parent agent needs a high-confidence map of code paths, ownership boundaries, and execution flow before changes are made.
gpt-5.3-codex-spark Core Development
- electron-pro — Use when a task needs Electron-specific implementation or debugging across main/renderer/preload boundaries, packaging, and desktop runtime behavior.
gpt-5.4 Core Development
- frontend-developer — Use when a task needs scoped frontend implementation or UI bug fixes with production-level behavior and quality.
gpt-5.4 Core Development
- fullstack-developer — Use when one bounded feature or bug spans frontend and backend and a single worker should own the entire path.
gpt-5.4 Core Development
- graphql-architect — Use when a task needs GraphQL schema evolution, resolver architecture, federation design, or distributed graph performance/security review.
gpt-5.4 Core Development
- microservices-architect — Use when a task needs service-boundary design, inter-service contract review, or distributed-system architecture decisions.
gpt-5.4 Core Development
- mobile-developer — Use when a task needs mobile implementation or debugging across app lifecycle, API integration, and device/platform-specific UX constraints.
gpt-5.4 Core Development
- ui-designer — Use when a task needs concrete UI decisions, interaction design, and implementation-ready design guidance before or during development.
gpt-5.4 Core Development
- ui-fixer — Use when a UI issue is already reproduced and the parent agent wants the smallest safe patch.
gpt-5.3-codex-spark Core Development
- websocket-engineer — Use when a task needs real-time transport and state work across WebSocket lifecycle, message contracts, and reconnect/failure behavior.
gpt-5.4 Core Development
Details
| Field | Value |
|---|
| Author | VoltAgent + community contributors |
| Original repository | https://github.com/VoltAgent/awesome-codex-subagents |
| Version | 0.0.12 |
| Original commit | 5b7a405 (2026-03-19) |
| License | MIT |
| Source platform | codex |
Compatibility
Platforms
| Platform | Status |
|---|
| Claude Code | Tested |
| Cursor | Tested |
| Codex | Tested |
Models
| Model | Role |
|---|
gpt-5.4 | recommended |
gpt-5.3-codex-spark | minimum |
Dependencies