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[BUG] Azure.AI.Agents.Persistent.ThreadMessages.GetMessagesAsync ignores "after" parameter #51342

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[BUG] Azure.AI.Agents.Persistent.ThreadMessages.GetMessagesAsync ignores "after" parameter#51342
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nick863
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AI AgentsClientThis issue is related to a non-management packageService AttentionWorkflow: This issue is responsible by Azure service team.customer-reportedIssues that are reported by GitHub users external to the Azure organization.issue-addressedWorkflow: The Azure SDK team believes it to be addressed and ready to close.questionThe issue doesn't require a change to the product in order to be resolved. Most issues start as that
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Description

@azu-compent
azu-compent
opened on Jul 18, 2025

Library name and version

Azure.AI.Agents.Persistent 1.1.0-beta.4

Describe the bug

Azure.AI.Agents.Persistent.ThreadMessages.GetMessagesAsync ignores "after" parameter, this makes it impossible to skip messages during pagination.

azure-sdk-for-net/sdk/ai/Azure.AI.Agents.Persistent/src/Custom/ThreadMessages.cs

Line 335 in 3e92e8c

public virtual AsyncPageable<PersistentThreadMessage> GetMessagesAsync(string threadId, string runId = null, int? limit = null, ListSortOrder? order = null, string after = null, string before = null, CancellationToken cancellationToken = default)

Expected behavior

"after" parameter is passed correctly to the endpoint

Actual behavior

"after" parameter is ignored

Reproduction Steps

Install the library and try to pass "after" parameter.

Environment

Not important

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AI AgentsClientThis issue is related to a non-management packageService AttentionWorkflow: This issue is responsible by Azure service team.customer-reportedIssues that are reported by GitHub users external to the Azure organization.issue-addressedWorkflow: The Azure SDK team believes it to be addressed and ready to close.questionThe issue doesn't require a change to the product in order to be resolved. Most issues start as that

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