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MCP C# Task Polling: Preventing Infinite Loops with Stuck Poll Thresholds

By PulseAugur Editorial · [1 sources] ·

This article details a method for preventing infinite loops in MCP C# task polling by implementing a maximum consecutive stuck polls threshold. The MCP Tasks extension allows tools to finish asynchronously, but a failure mode exists where repeated polling returns the same input request. The C# SDK's `CallToolWithPollingAsync` method includes a default threshold of 60 stuck polls, which can be adjusted. The author demonstrates how to set a lower threshold, such as 3, in a verification environment to precisely diagnose and handle scenarios where a server fails to make progress, ensuring the client cancels the task and throws an `McpException` instead of continuing to poll indefinitely. AI

IMPACT Improves developer experience and reliability for AI tool integrations by preventing infinite loops in task polling.

RANK_REASON The article describes a specific implementation detail and best practice for a software development kit (SDK) feature, rather than a new product release or significant industry event.

Read on dev.to — MCP tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

MCP C# Task Polling: Preventing Infinite Loops with Stuck Poll Thresholds

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28 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
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Tool
The article describes a specific implementation detail and best practice for a software development kit (SDK) feature, rather than a new product release or significant industry event.
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Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
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product, infra
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High
Clearly on-topic for AI-industry coverage.
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Breaking (< 6h)
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Full methodology in our editorial standards.

COVERAGE [1]

  1. dev.to — MCP tag TIER_1 English(EN) · Sukhpinder Singh ·

    MCP C# Task Polling: Stop Infinite input_required Loops

    <p>MCP Tasks let a tool finish asynchronously, but they also introduce a failure mode that a normal request timeout does not describe well: the task is alive, yet every poll returns the same <code>input_required</code> request. For MCP C# task polling, I want a bounded definition…

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