Agent Ecosystem

156 AIAgents

Specialized AI personas for every domain, from account strategy to game development. Each agent brings domain expertise, preferred tools, and tailored behavior.

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Browse & Activate Agents

Browse & Activate Agents

Explore the full catalog of 156 bundled agents, each with a unique emoji identity, description, and supported modes. Activate the agents you need for your current project.

  • 156 bundled agents across every domain
  • Mode badges show which modes each agent supports
  • Search and filter to find the right agent
  • One-click activation per workspace
Session History & Modes

Session History & Modes

Every conversation is saved with its mode, token count, and full context. Switch between sessions instantly, filter by mode (Plan, Ask, Code), and resume where you left off.

  • Automatic session saving with full context
  • Filter sessions by AI mode
  • Token usage tracking per session
  • Instant session switching

Share Your Agents

Customised an agent for your team's review style? Built a brand-new one? Share it in one click. Open the Marketplace's Installed tab, filter to your agents, and click Export as `.plxm`. Teammates double-click the file and your agent shows up in their Agents panel ready to use. Pair agents with the skills they depend on in the same package and the whole kit installs together.

  • One-click export bundles agents (and any skills they need) into a single shareable file
  • Recipients install with a double-click. No command line, no setup
  • Or publish to a Git repo so the team picks up updates over time
  • Want to publish a public agent? Marketplace Developer Mode builds the repo for you

Author Agents From Chat

Spin up a custom subagent in one prompt.

Just describe the agent in chat (modes, allowed tools, model, budget, file-pattern triggers) and Plexon writes it for you. List, create, read, update, or delete any of your agents from a normal conversation. The new agent goes through the same checks as the Agents panel and is ready to use right away.

Every change shows you a preview before anything is saved, with one-click approval. Bundled and plugin-installed agents stay read-only. If you want to change one, the AI offers to copy it to a new name first. A built-in helper teaches the AI how to choose between a "skill" and a full "agent" as it writes.

Try in chat

"Create an agent called release-captain that runs in code and architect modes."

"Update release-captain so its max token budget is 200000."

"List my agents."

"Delete the release-captain agent."

What you can configure

  • System prompt, emoji, color, vibe (when-to-use guidance)
  • Mode allowlist: code, auto, ask, architect
  • Tool allowlist and denylist (embedded + MCP)
  • Skill allowlist and skill directories
  • Provider and model override per agent
  • Max turns, token budget, and cost budget (USD)
  • File-pattern triggers for conditional activation
  • Sub-agents cannot mutate global agents (tool excluded from sub-agent contexts)

Works with any provider (Anthropic, OpenAI, Gemini, Moonshot, Qwen, OpenRouter) because the tool schemas live in the embedded MCP server, not in provider-specific system prompts.

Agent Capabilities

Custom Agents

Create your own agents with custom system prompts, emoji identity, color accent, mode restrictions, tool allowlists/denylists, and conditional activation via file patterns.

Provider & Model Override

Each agent can override the session provider and model. Use GPT-4 for one agent and Claude for another, all in the same orchestrator session.

Tool & Skill Scoping

Control which tools and skills each agent can access. Give the test engineer only test tools, or restrict the documentation writer from executing commands.

Import & Export

Import agents from GitHub repositories or export your custom agents as .md or .zip files. Share agent definitions across teams and projects.