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#mastra

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Mastra 'invocation.errorText?.trim is not a function': fixed in @mastra/memory 1.39.1

A stored failed tool call with an object-valued errorText stopped Observational Memory on every later turn. Upgrade, and mind the @mastra/core peer bump.

4 min readmemorysync.hashnode.dev

MemorySyncOct 29

Mastra 'Memory requires a storage provider to function': fixing it in tests, evals and CI

Memory with no storage of its own falls back to the Mastra instance's storage. In tests that construct the agent on its own, there isn't one.

6 min readmemorysync.hashnode.dev

MemorySyncOct 26

Mastra working memory with tool calls: fixing 'use: tool-call' and messages missing before tool calls

Mastra issue #4221 reported that working memory in 'tool-call' mode dropped the text the agent wrote before a tool call. Here's what changed since, why the old config now throws, the current working memory setup, and how to check what was actually saved.

6 min readmemorysync.hashnode.dev

MemorySyncOct 24

Add long-term memory to a Mastra agent (input/output processors, per-user recall)

Mastra's Memory keeps threads and message history. Here's how to add per-user facts that follow a user across threads, using Mastra's native processor pipeline, plus five memory tools.

7 min readmemorysync.hashnode.dev

Benny Ifeanyi IheagwaraOct 14

Build a web-aware TypeScript agent with Mastra and Zenrows

Replace Mastra's plain HTTP fetch with a typed Zenrows Fetch tool for protected and JavaScript-rendered pages.

16 min readzenrows.hashnode.dev

Kartik MehtaAug 24

I Built an Autonomous Testing Framework for AI Agents.

An autonomous, framework-agnostic testing harness where AI agents write, run, and remember the tests. (14)

12 min readwriter.mrmehta.in

Bibek KakatiAug 17

Building a Multi-Agent AI Pipeline with Mastra and TypeScript

How Clause AI uses a multi-agent architecture with Mastra to parse, summarize, assess risk, and power RAG-based Q&A over rental agreements.

11 min readbibekkakati.hashnode.dev

Sunkanmi FafoworaJul 13

Your Browser Agent Needs a Replay Button

We will explore how browser agents are powerful but can be hard to trust, and what Mastra has created to help solve this issue.

7 min readsunkanmi.hashnode.dev

Shola JegedeJun 13

Mastra vs LangChain: Building an AI Agent Pipeline and Analyzing the Data

I built the same AI agent pipeline in Mastra and LangChain, measured every token and step. Here is what the data actually looks like.

30 min readfreecodecamp.org

Shola JegedeJun 10

How to Build a Secure Multi-Tenant AI Agent System with Kinde, Mastra, and Convex

Build AI agents that keep every organization's data isolated, with the tenant identifier enforced at every layer from auth to database.

24 min readsholajegede.hashnode.dev

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