Skill

Install the Assistant Core skill so your AI app manages assistants the way the platform works.

Assistant Core MCP gives your AI app the tools. The Assistant Core skill tells it how the platform uses what it sets, so it makes better changes:

It writes system prompts without format rules (no markdown, sentence limits), because Assistant Core already adds the right ones for voice, the web widget and messaging apps.
It puts long content such as price lists and policies in the knowledge base, not the prompt.
It proposes a change before making it when you ask for an outcome ("improve it"), shows the prompt diff, and offers to undo.
It treats end-user feedback as claims to check with you, not facts.

The skill follows the open Agent Skills format. Its source is on GitHub.

Claude Code

One plugin installs both Assistant Core MCP and the skill, so you don't need claude mcp add:

claude plugin marketplace add assistant-core/skills
claude plugin install assistant-core@assistant-core

Then type /mcp in Claude Code, select assistant-core → Authenticate.

To update later, run claude plugin marketplace update assistant-core then claude plugin update assistant-core@assistant-core.

Connect Assistant Core MCP as a connector: see Claude.
Download assistant-core.zip. Don't unzip it.
Go to Settings → Capabilities and turn on code execution and file creation.
In Skills, click Upload skill and pick the zip.

To update, download the new zip and upload it again.

npx skills add assistant-core/skills

The command detects the coding tools on your computer and asks which ones to install the skill for. Add -g to install it for every project.

The app loads the skill on its own when a request is about your assistants.