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[ARTICLE · art-115037] src=news.ycombinator.com ↗ pub= topic=ai-tools verified=true sentiment=· neutral

Ask HN: Why do we need MCP?

A Hacker News user questioned the necessity of the Model Context Protocol (MCP), suggesting that publishing API documentation and letting a client's bot chain together calls could cover most use cases more cheaply and safely. The user proposed repurposing MCP to produce API documentation as every response, eliminating the need for an LLM.

read1 min views1 publishedAug 29, 2026

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

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source & further reading
news.ycombinator.com — original article Ask HN: What BOYK AI client are you using? Is "An agent with tools" the only valid LLM application? We’re rolling out ads in ChatGPT
── more in #ai-tools 4 stories · sorted by recency
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