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An open standard for connecting AI assistants to external tools and data sources through a common interface, so integrations are built once and reused across models.
The Model Context Protocol, introduced by Anthropic in 2024, standardises how applications expose tools, resources and prompts to language models. Instead of bespoke glue for every model–tool pair, a server implements MCP once and any MCP-aware client can use it — often described as a "USB-C port" for AI integrations.
MCP matters as assistants become agentic: a shared protocol makes the ecosystem of connectors composable and portable across vendors.
Primary, peer-reviewed and archival sources for this definition.
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