• Willison concedes MCP is largely unnecessary for full autonomous terminal agents (Claude Code, Codex, Meta Muse, OpenClaw) that already have unfettered API access — they can just call APIs directly.
• But he argues MCP earns its keep for less permissive setups needing scoped access control, credential handling that keeps API keys away from the agent itself, a connect/authenticate UI for end users, and strong audit logging.
• His conclusion: calling MCP obsolete conflates 'unneeded by fully autonomous coding agents' with 'unneeded everywhere' — ignoring the broader class of applications that need those controls.

• MCP — The Model Context Protocol — an open standard that lets any AI assistant plug into any tool or data source without custom integration code.
• AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.

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