Streamline Agent Plugins

Plugins that bring Streamline icons, illustrations and design elements to AI agents. Each plugin bundles the Streamline MCP server with skills that teach the agent how to use it well.

Plugins

Plugin	Description
streamline-icons	Search, recommend and download Streamline icons, illustrations and design elements. Includes the streamline-expert skill.

Install in Claude Code

/plugin marketplace add webalys-hq/agent-plugins
/plugin install streamline-icons@streamline-icons

If you added this marketplace before, refresh it first:

/plugin marketplace update streamline-icons

The first time you use a Streamline tool, sign in with your Streamline account when prompted.

Install in Cursor

Install Streamline Icons from the Cursor Marketplace, then sign in with your Streamline account when Cursor connects to the Streamline MCP server.

ChatGPT and Codex

The plugin is packaged for OpenAI with the portable Agent Plugins layout: plugin.json at the plugin root, with the ChatGPT listing copy under extensions["com.openai"]. Keep that copy in line with the plugin guidelines: no superlatives, comparisons, testimonials or pricing. mcp.json at the plugin root declares the Streamline MCP server for OpenAI.

To build the archive for Plugins → + → Upload plugin in ChatGPT, zip the plugin folder so it is the archive's only top-level folder:

cd plugins && rm -f streamline-icons.zip && zip -qr streamline-icons.zip streamline-icons -x '*.DS_Store' 'streamline-icons/.mcp.json' 'streamline-icons/.claude-plugin/*' 'streamline-icons/.cursor-plugin/*'

The rm matters: zip adds to an existing archive, so without it files you deleted from the plugin stay in the zip. The Claude and Cursor files are left out because OpenAI reads .mcp.json as an MCP connection too.

The OpenAI dashboard rejects the upload unless:

• name in plugin.json matches the plugin you are updating (streamline-icons).
• shortDescription (the subtitle) is 30 characters or fewer.
• version in plugin.json differs from the last uploaded one. Bump it for every update.
• supportURL and logo are set.
• The root mcp.json declares the Streamline MCP server. Removing it from an existing plugin isn't supported.

Skills are copied into the archive at upload, so re-zip and re-upload after changing them.

Only one plugin can connect to the Streamline MCP server, and the server's domain-verification token (/.well-known/openai-apps-challenge) comes from the NX_BACKEND_OPENAI_APPS_CHALLENGE_VERIFICATION_CODE env var in streamline-api-nestjs. A new plugin needs its token set there and the public API redeployed.

Repository structure

agent-plugins/
├── .claude-plugin/marketplace.json     # Claude marketplace catalog
├── .cursor-plugin/marketplace.json     # Cursor marketplace catalog
└── plugins/
    └── streamline-icons/
        ├── .claude-plugin/plugin.json  # Claude plugin manifest
        ├── .cursor-plugin/plugin.json  # Cursor plugin manifest
        ├── .cursor-plugin/mcp.json     # Streamline MCP server (Cursor)
        ├── plugin.json                 # OpenAI (ChatGPT and Codex) plugin manifest
        ├── mcp.json                    # Streamline MCP server (OpenAI)
        ├── .mcp.json                   # Streamline MCP server (Claude)
        ├── assets/icon.png             # ChatGPT composer icon
        ├── assets/logo.png             # Cursor and ChatGPT listing logo
        ├── README.md
        ├── LICENSE
        └── skills/
            └── streamline-expert/

License

Apache License 2.0. See LICENSE. Assets downloaded through the plugins are licensed under your Streamline plan.