# Ask HN: Why do we need MCP? > Source: > Published: 2026-08-29 10:26:48+00:00 Hacker News new | past | comments | ask | show | jobs | submit login Ask HN: Why do we need MCP? 3 points by jwally 20 minutes ago | hide | past | favorite | 1 comment Why not just publish your API docs and let the client's bot chain together what calls need to be made. You could even repurpose the MCP so you only ever produce the API documentation as EVERY response. No LLM necessary. jwally 18 minutes ago | next [–] Probably covers most use cases and is a lot cheaper and safer. reply Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact