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Mastra Agent Builder

Agent platform

by Mastra

A UI mounted inside a team's own Mastra server for creating and operating internal agents, with multi-tenant workflows, role-based access and channel integrations, licensed for production under Mastra's enterprise licence.

Find alternatives to Mastra Agent Builder

What it does

• Agent orchestration

Features 3

• Metrics DashboardsDashboards for agent performance, tracking costs, latencies and quality scores.
• Run LogsStructured, level-scoped logs for every run to debug and verify agents.
• Agent Creation for Non-DevelopersPMs, ops and support assemble tools, models and workflows into agents they can chat with and publish.

Sources

Pricing

Pricing page · 10 Oct 2026

Production use needs the self-hosted Enterprise licence: "Custom pricing", "a flat annual fee with no per-trace or per-seat metering", contact sales. Local development use without a licence is not described as a plan.

Description

Official documentation · 10 Oct 2026

The docs list a UI, multi-tenant workflows, RBAC and channel integrations; quickstart "npm create mastra@latest -- --template agent-builder", mounted at /agent-builder.

What it does

Official documentation · 10 Oct 2026

"Build, test, observe, and improve internal AI agents on a TypeScript platform your whole team can use."

Sold within

Official documentation · 10 Oct 2026

"Production deployments require a valid EE license." The pricing page's self-hosted Enterprise card ("Licensed self-hosted features", "Custom pricing") is the licence; the homepage calls it the "Mastra Enterprise License".

Name

Official documentation · 10 Oct 2026

"The Agent Builder provides a UI for creating and operating Mastra agents. It runs inside your Mastra server."

URL

Official documentation · 10 Oct 2026

Page headed "Your Internal Agent Platform"; it links the Agent Builder docs at agent-builder.mastra.ai.

Deployment

Official documentation · 10 Oct 2026

"It runs inside your Mastra server."

Also from Mastra

• Mastra Developer tool

  An open-source TypeScript framework that developers use to build, run and observe AI agents and workflows, with a hosted Studio and cloud deployment option.

• Mastra Studio Developer tool

  A shared workspace where a team inspects agent runs through traces and cost, latency and quality metrics, scores outputs with LLM-as-judge or code, runs dataset experiments and versions prompts and agent configurations, open to non-engineering reviewers without source access.

• Mastra Platform Observability Infrastructure service

  Hosted telemetry store for Mastra agents in production: it keeps the metrics, structured logs and step-by-step traces of model calls, tool calls and workflow steps for every run, with dashboards for cost, latency and quality scores.

• Mastra Server Infrastructure service

  Hosted deployment target that runs a Mastra application's agents, tools and workflows as an API server from one command, with routing and scaling handled by Mastra and billing by CPU time and data egress.

• Mastra Gateway API service

  An OpenAI- and Anthropic-compatible model gateway that routes one API key to 300+ models with provider failover, and adds observational memory that compresses each conversation into notes so agents keep context without rebuilding it.

• Mastra Factory AI agent

  An open-source software delivery environment where coding agents take a connected repository's issues through investigation, planning, implementation and review to a reviewed pull request, with people deciding at each step; self-hosted or deployed on Mastra's platform.

• Mastra Code AI agent

  An open-source terminal coding agent with Build, Plan and Fast modes and explore, plan and execute subagents, whose observational memory compresses the session into notes instead of compacting it, so long sessions keep their context.

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