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MCP Router: protocols.stateless.maxConcurrentRequestsPerPrincipal

maxConcurrentRequestsPerPrincipal caps in-flight stateless requests for one authenticated or trusted anonymous binding.

  • Type: Positive integer
  • Default: 32

The per-principal permit is acquired together with the global request permit. If either limit is exhausted, the gateway returns HTTP 429. Counters are process-local and disappear when no active permit retains that principal’s semaphore.