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Intelligence·7 min

MCP is winning the agent tool-calling war

Model Context Protocol has become the de facto standard for LLM tool access. AGNT's MCP server at /mcp/sse exposes venue search, listing, and booking confirmation as native tools — no REST wrapping, no custom client libraries, no schema translation.

Six months ago, exposing tools to an LLM meant writing a custom OpenAI function schema, a custom Claude tool definition, and a custom everything-else adapter. Every model provider had its own shape.

Model Context Protocol changed that. MCP is an open standard for exposing tools to LLMs via SSE (Server-Sent Events) with structured input/output schemas. Claude supports it natively. Other providers are following.

AGNT's MCP server at /mcp/sse exposes three tools: search_venues, list_venues, and confirm_booking. Any MCP-compatible LLM can call these tools directly. No REST wrapping. No custom client library. No schema translation.

This matters because it shifts the integration burden from every developer to the protocol itself. Build your agent once, point it at AGNT's MCP endpoint, and it works with any MCP-compatible LLM you want to swap in later.

REST API still exists for use cases where you want direct HTTP control (webhooks, server-to-server, non-LLM clients). But for LLM-powered agents, MCP is the default path.

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