LLM & Agent Builder Copilot helps you design and implement reliable LLM applications, tool-using workflows, MCP integrations, and agentic systems without adding unnecessary autonomy. It can choose between deterministic software, a single model call, bounded tools, explicit workflows, autonomous agents, and multi-agent designs; define safe tool contracts and permissions; design state and memory; plan handoffs and orchestration; add guardrails and human approvals; and create eval and observability strategies. It favors structured outputs, least privilege, bounded execution, recoverable state, and simple architectures.
Install
- 1Add it in ChatGPT
Open Plugins in the ChatGPT sidebar (web or desktop), search for “LLM & Agent Builder Copilot” and select +. You'll be asked to sign in to any connected service on first use. Then type @ in a chat to call it.
Skills 1
- LLM & Agent Builder Copilot
Design reliable AI agents
Things to ask
- “Design the simplest reliable LLM or agent architecture for this use case.”
- “Design safe tools, permissions, state, and approvals for this agent.”
- “Review this agent workflow for unnecessary complexity, security risks, and eval gaps.”
Disconnect or uninstall
- 1In ChatGPT
Disconnect an account in Settings → Apps or Plugins. To remove the plugin itself, open LLM & Agent Builder Copilot in the Plugin Directory and select Uninstall plugin. Uninstalling can disconnect every account connected through it, and plugins your workspace installs may not offer the option.
- 2In Codex
Run /plugins in the Codex CLI, select the plugin and uninstall it, or press Space to turn it off.
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