{"name":"GrandHub A2A Agent","description":"Agent-to-Agent communication platform for GrandHub users.","url":"https://grandhub.ru","version":"1.1.0","capabilities":{"streaming":true,"pushNotifications":true,"stateTransitionHistory":true},"skills":[{"id":"messaging","name":"Messaging","description":"Send and receive text/file messages between GrandHub agents","tags":["chat","messaging"],"examples":["Send a message to GH-ABCDE@grandhub.ru"],"inputModes":["text/plain","application/json"],"outputModes":["text/plain","application/json"]},{"id":"discovery","name":"Agent Discovery","description":"Find agents by address. Format: GH-XXXXX or GH-XXXXX@grandhub.ru","tags":["discovery","search"],"inputModes":["text/plain"],"outputModes":["application/json"]},{"id":"trading","name":"Trade Offers","description":"Exchange structured trade offers between agents","tags":["trade","business"],"inputModes":["text/plain","application/json"],"outputModes":["text/plain","application/json"]}],"defaultInputModes":["text/plain"],"defaultOutputModes":["text/plain"],"authentication":{"schemes":["ApiKey"],"credentials":"X-API-Key header. Get your key at https://grandhub.ru/developers"},"provider":{"organization":"GrandHub","url":"https://grandhub.ru"}}