{
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  "path": "/t/agent-builder-mcp-problem/1361698#post_5",
  "publishedAt": "2026-04-15T17:03:19.000Z",
  "site": "https://community.openai.com",
  "textContent": "Have you been able to figure out how to pass the input from the AGENT to the MCP Server? Im doing a basic add_numbers(a, b) MCP call, and I receive the same error as you. Ive tried many options in defining the output scheme from the agent without any luck:\nAGENT → Json output schema with a and b → MCP SERVER add_numbers(a, b) function.\n\nI also noticed that only 1 function can be assigned:\n\nThe MCP Server works with the Chat (Responses), so I know its an Agent Builder (ChatKit) problem only…",
  "title": "Agent BUilder MCP problem"
}