via “middleware pipeline system for tool transformation and filtering”
MCP Aggregator, Orchestrator, Middleware, Gateway in one docker
Unique: Implements a composable middleware pipeline that operates at both schema discovery time and invocation time, allowing namespace-specific tool customization without modifying upstream servers. Middleware is applied sequentially with early-exit filtering, enabling efficient access control and schema transformation in a single pass.
vs others: More flexible than static tool allowlists because middleware can apply complex transformation logic, more maintainable than forking servers because customizations are centralized in MetaMCP configuration, and more performant than per-request server modifications because transformations are cached at discovery time.