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Mastra does not call tools, and starts hallucinating tools

AgentsIssues regarding Mastra's Agent primitiveIssues regarding Mastra's Agent primitive

bugSomething isn't workingSomething isn't working

Communication

discordFor issues created from Discord discussions.For issues created from Discord discussions.

effort:medium

impact:high

ToolsIssues with user made tools for Agent tool callingIssues with user made tools for Agent tool calling

trio-tb

Status: Open.

#11781 In mastra-ai/mastra;

· daneatmastra opened on Jan 9, 2026

[DOCS] No guidance on how contributors can locally test Mastra feature changes

DocumentationImprovements or additions to documentationImprovements or additions to documentation

EducationMastra team requires to both educate via docs and show by examples to address this issueMastra team requires to both educate via docs and show by examples to address this issue

effort:medium

Getting StartedIssues with create mastra, or getting started using MastraIssues with create mastra, or getting started using Mastra

Growth

impact:high

Status: Open.

#11775 In mastra-ai/mastra;

· intojhanurag opened on Jan 9, 2026

[Feature request] Update memory/thread resourceId for continuous user history

discordFor issues created from Discord discussions.For issues created from Discord discussions.

effort:medium

enhancementNew feature or requestNew feature or request

General Inquiry

impact:medium

MemoryIssues with Mastra's Memory primitiveIssues with Mastra's Memory primitive

StorageIssues with Mastra Storage adapters for databases and vector storageIssues with Mastra Storage adapters for databases and vector storage

trio-tb

Status: Open.

#11772 In mastra-ai/mastra;

· daneatmastra opened on Jan 9, 2026

[BUG] tsconfig.json alias not working for extended configs

bugSomething isn't workingSomething isn't working

effort:medium

General Issue

Getting StartedIssues with create mastra, or getting started using MastraIssues with create mastra, or getting started using Mastra

impact:high

trio-wp

Status: Open.

#11770 In mastra-ai/mastra;

· LekoArts opened on Jan 9, 2026

[FEATURE] Improve scorer null values in studio

effort:medium

enhancementNew feature or requestNew feature or request

EvalsIssues surrounding Mastra EvalsIssues surrounding Mastra Evals

impact:medium

trio-tracery

Status: Open.

#11769 In mastra-ai/mastra;

· wardpeet opened on Jan 9, 2026

[BUG] <code>structuredOutput</code> does not work with <code>optional</code> and <code>default</code>

AgentsIssues regarding Mastra's Agent primitiveIssues regarding Mastra's Agent primitive

bugSomething isn't workingSomething isn't working

effort:medium

impact:high

ToolsIssues with user made tools for Agent tool callingIssues with user made tools for Agent tool calling

trio-wp

Status: Open.

#11766 In mastra-ai/mastra;

· roaminro opened on Jan 9, 2026

[BUG] Agent CMS doesn't pick up the updated prompt in my code.

AgentsIssues regarding Mastra's Agent primitiveIssues regarding Mastra's Agent primitive

bugSomething isn't workingSomething isn't working

effort:medium

impact:medium

trio-tb

Status: Open.

#11763 In mastra-ai/mastra;

· epinzur opened on Jan 9, 2026

[BUG] Issue running anthropic models in the studio/playground

AgentsIssues regarding Mastra's Agent primitiveIssues regarding Mastra's Agent primitive

AI SDKIssues with Mastra + AI-SDK toolkit and providersIssues with Mastra + AI-SDK toolkit and providers

bugSomething isn't workingSomething isn't working

effort:medium

impact:high

trio-wp

Status: Open.

#11760 In mastra-ai/mastra;

· epinzur opened on Jan 9, 2026

[BUG] generateTitle: true does not trigger when thread is pre-created via client SDK

bugSomething isn't workingSomething isn't working

Client SDK - JSIssues using the Client SDKIssues using the Client SDK

effort:medium

impact:high

MemoryIssues with Mastra's Memory primitiveIssues with Mastra's Memory primitive

trio-wp

Status: Open.

#11757 In mastra-ai/mastra;

· sicko7947 opened on Jan 9, 2026

[DOCS] Laminar Observability Platform

DocumentationImprovements or additions to documentationImprovements or additions to documentation

effort:medium

Growth

impact:medium

Observability (AI Telemetry)Issues related to AI related Observability/Telemetry (Traces, Metrics, Logs)Issues related to AI related Observability/Telemetry (Traces, Metrics, Logs)

trio-tracery

WorkflowsAll things Mastra Workflows and different execution engines.All things Mastra Workflows and different execution engines.

Status: Open.

#11756 In mastra-ai/mastra;

· SamKomesarook opened on Jan 9, 2026

[FEATURE] Could we standardize the usage of threadId and resourceId too?

AgentsIssues regarding Mastra's Agent primitiveIssues regarding Mastra's Agent primitive

effort:medium

enhancementNew feature or requestNew feature or request

impact:medium

trio-tb

Status: Open.

#11753 In mastra-ai/mastra;

· crapthings opened on Jan 9, 2026

Agent network not working with <code>gpt-5-mini</code>

Agent NetworkIssues with Mastra's Agent Network primitiveIssues with Mastra's Agent Network primitive

AgentsIssues regarding Mastra's Agent primitiveIssues regarding Mastra's Agent primitive

bugSomething isn't workingSomething isn't working

discordFor issues created from Discord discussions.For issues created from Discord discussions.

effort:medium

impact:high

trio-tb

Status: Open.

#11749 In mastra-ai/mastra;

· daneatmastra opened on Jan 9, 2026