MCP Integration

Model Context Protocol gives an agentAgentA worker you delegate to: brief it, and it takes steps on its own. A chatbot answers; an agent acts.An LLM that runs tools in a loop toward a goal — it acts, checks the result, decides the next step, and repeats until done.Full definitionClose a negotiated interface to external tools and context. Claude Code, Codex, and Copilot all expose MCPMCPUSB-C for AI — one standard plug so any agent can connect to any data source or tool.The Model Context Protocol: an open standard (Anthropic, 2024) for connecting AI systems to external tools and data without building a custom integration for each one.Full definitionClose integrations, but the word “supports” hides material differences by surface.

Compare Primitives, Not Logos

For each target surface, verify:

• Which MCP primitives are consumed: tools, resources, prompts, or a subset.
• Which transports and authentication flows are supported.
• Where configuration and secrets live.
• Whether tool approval, allowlists, and managed policy are available.
• How connection failures, timeouts, and oversized responses are surfaced.
• Whether the integration runs locally, in a hosted environment, or both.

GitHub's cloud-agent documentation is a useful warning against family-level claims: that surface supports MCP tools while excluding resources, prompts, and remote OAuth. A statement about Copilot CLI MCP therefore cannot be copied to Copilot cloud agent unchanged.

Architecture Boundary

MCP is an integration protocol, not a trust boundary. A server's tool description is not authorization, and a successful connection is not evidence that its actions are safe. Apply least privilege at the credential and service layer, validate tool inputs, constrain egress, and record the resulting external action independently.

Prefer an existing official or reviewed server when its trust and output contracts fit. Build a custom server when domain semantics, access control, or response shaping are part of the system's correctness.

The deeper lenses retain Claude Code-specific configuration and server examples. Revalidate transport, authentication, and supported primitives for the exact product surface before reuse.