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Troubleshooting: MCP Failures

Kubernetes MCP Failures — Stop Tool-Server Errors Cascading Into Agent Loops

MCP failures break workflows and trigger loops. Here is how to find the auth, limit, or tool cause.

An MCP server returning 401/403, a token that just expired, a rate limit tripping under load, or a tool timing out — and agents start looping or workflows break.

MCP failures on Kubernetes come from authentication/authorization errors (401/403), expired or misissued tokens, rate-limit rejections under load, network policy blocking the call, timeouts, or tool-side errors. We trace the failing call, fix the auth/scope/network/limit cause, add retries-with-backoff and circuit breakers so a tool failure does not trigger an agent loop, and wire in the observability that makes the next failure obvious.

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FAQ

Frequently Asked Questions

Everything you need to know before getting started with job support or interview assistance.

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MCP failures usually come from 401/403 authorization errors, token expiry, rate-limit rejections, network policy blocks, timeouts, or tool-side errors. We diagnose it live by reading Pod events (kubectl describe), scheduler and device-plugin logs, container logs, GPU metrics (DCGM), and Prometheus/OpenTelemetry traces — then confirm the root cause before changing anything, rather than guessing.

We stabilise first — protect the running workload, control blast radius, and restore service — then apply the durable fix (scheduling, resource requests/limits, node/GPU configuration, probes, autoscaling policy, or manifest changes) and add the observability or guardrail that would have caught it earlier. You keep an engineer on the call throughout.

Yes. This is exactly the kind of incident we handle on-call. Message us on WhatsApp describing the symptom, your cluster and cloud (EKS/AKS/GKE/OpenShift/bare-metal), and what changed recently, and we will join and work it with you until the system is stable.

Both. This page explains the failure mode and how it is resolved so you can act on it yourself. If you would rather have an expert work it with you live — during an incident or as ongoing job support — that service is available same-day and confidentially.

Yes. After the fix we help you add the right alerts, SLOs, resource policies, admission controls, and runbooks so the same failure does not page you again — and we can review the rest of your platform for the same class of risk.

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Facing MCP server failures Right Now? Get an Engineer on the Call.

In-house Kubernetes, GPU, and inference experts available same-day for live incidents — we triage from your events, logs, and metrics, stabilise, and ship a durable fix. Talk to ProxyTechSupport on WhatsApp now.

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