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AI in 3 · 3 min read

MCP and why tool-calling standardisation matters

One protocol between models and your systems, instead of a bespoke integration per vendor.

AI in 3Intermediate

Tool calling lets a model request an action — search this, fetch that, create the ticket — and your code performs it. Every vendor implemented that with a slightly different schema, so integrations were written twice.

The Model Context Protocol standardises the layer between models and tools: a server exposes tools and resources, any compatible client can use them. Practically, it means your internal capability is written once and reused across assistants.

For a PM the important consequence is governance. When tools live behind one protocol you get one place to enforce authentication, scopes, rate limits and audit logging — instead of that logic being scattered across three integrations.

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