{"protocolVersion":"0.3.0","name":"Skillselion Catalog","description":"Searches the public Skillselion directory of agent skills, MCP servers and marketplaces, ranked by real installs. Read-only. No account required.","version":"1.0.0","provider":{"organization":"Ellelion LLC","url":"https://skillselion.com"},"documentationUrl":"https://skillselion.com/developers","defaultInputModes":["text/plain","application/json"],"defaultOutputModes":["text/plain","application/json"],"capabilities":{"streaming":false,"pushNotifications":false,"extendedAgentCard":false},"supportedInterfaces":[{"url":"https://skillselion.com/a2a/v1","protocolBinding":"JSONRPC","protocolVersion":"0.3.0"}],"skills":[{"id":"catalog-search","name":"Catalog search","description":"Search listings by keyword and optional type (skill, mcp, marketplace, plugin).","tags":["catalog","search","skills","mcp"]},{"id":"catalog-top","name":"Top listings","description":"Return the current most-installed listings.","tags":["catalog","leaderboard"]}]}