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Marketplace

The marketplace is a shop window onto external platforms with skills and MCP servers. Here you can find something ready-made, look at its contents, make sure it is safe and add it to yourself — without leaving onplate.

Three tabs: Skills, MCP and Subagents.

Searching for skills

  1. Type a query and run the search.
  2. Narrow the results: sorting (newest first / by stars), category, occupation.
  3. Click a result — the preview opens on the right.

Preview: check first, import after

The main rule of the marketplace is that you always see what exactly you are adding:

  • The SKILL.md content — the full text of the skill (with a “Copy to clipboard” button next to it);
  • A security score — every skill goes through the scanner right in the preview:
    • dangerous constructs found — the lines are highlighted in red, with a list of findings and explanations underneath;
    • suspicious spots — highlighted too;
    • informational notes only — the skill counts as safe;
  • Open in browser — the skill’s page on the original platform.

Then comes the Add to storage button. If a skill is marked dangerous, onplate asks for a written justification: the import is deliberate or it does not happen. Skills you already added are marked “Already in storage” with an “Open in installed” link.

The MCP tab

Search MCP servers in the official registry and import in one click. If a server has secret fields (marked 🔒) — keys, tokens — you fill them in before installing; the values are encrypted, as described in MCP servers.

Your own sources are connected with the Add registry button: a name, a URL and a token (for private ones). Any address that returns JSON will do — the official registry schema or an mcpServers config; the format is recognized automatically.

The Subagents tab

Search for subagents across connectable sources. The preview works the same way as for skills, but shows what matters for a subagent — the permissions (tools) it was given, the scanner findings and the body of the prompt. The Updates button checks whether new versions of the subagents you already installed have been released, and offers to update them one by one.

Your own catalog is connected with the Add source button: the URL of a JSON catalog (a list of subagents with links to .md files) and, if needed, an access token.

Your own platforms

The list of skill platforms is extensible too — Add platform:

  • Name and Base URL;
  • an API key, if the platform requires one — the key is encrypted and stays with you only (after saving it is shown masked);
  • if needed, a response mapping: which fields in the platform’s JSON count as the name, the author, the description and so on. This lets you connect almost any skill catalog;
  • the Test button — a trial request before saving.

Request limits

Platforms often have daily quotas. onplate shows the remaining requests and the reset time right in the interface; if the quota runs out, it suggests adding an API key, which usually raises the limit.