MCP Trends 2025: What's Hot Right Now
A snapshot of what dominated MCP adoption in 2025 — remote servers, OAuth-first auth, and marketplace consolidation.
Looking back at 2025, three shifts defined how MCP servers were actually built and run, distinct from where the ecosystem is heading next.
Remote Over Local
Stdio-only servers were the 2024 default; by late 2025 most new production servers shipped remote-first over Streamable HTTP, driven by enterprise clients wanting centrally managed, unattended servers.
OAuth Became the Default, Not the Exception
API-key-only auth is increasingly treated as a prototype-only pattern. The OAuth flows standardized in the MCP spec revisions saw broad SDK support land this year.
Marketplace Consolidation
The number of competing MCP directories shrank as a few marketplaces absorbed listings from smaller ones — good for discoverability, less good for anyone who'd built around a directory that got sunset.