Summary /mastra

Mastra is a TypeScript AI framework for building agents that ship.

Mastra (mastra.ai) positions itself as an all‑in‑one framework for AI‑powered applications: agents, workflows, RAG, memory, MCP, evals, and observability — designed to move from "cool demo" to "production system" without rewriting everything.

Open mastra.ai Getting started GitHub org

The vibe

Python trains, TypeScript ships. Mastra is opinionated about building agentic systems in the same stack you already deploy.

Agent framework

Compose agents and tools, then iterate quickly in a local dev loop.

Workflows

Structure multi-step reasoning and tool use into deterministic, testable flows.

RAG + Memory

Retrieval, memory, and context management so agents can remember the right things (and forget the rest).

MCP

Integrate external tool servers through MCP for cleaner, standardized tool wiring.

Production features that matter

The framework angle is nice; the important part is operational rigor. Mastra highlights the boring (good) stuff: evaluation, guardrails, traces, and auth.

Evals Define custom evals and track output quality over time (model‑graded, rule‑based, statistical).
Guardrails Process inputs/outputs to reduce prompt injection risk and sanitize responses.
Observability Trace calls and token usage; ship telemetry to your existing o11y platform.
Auth Secure access to agent endpoints using your identity system.

agent.ts

// Idea → agent → workflow → eval → ship
const agent = buildAgent({
  tools: [browser, db, files],
  memory: vectorStore(),
  guardrails: sanitize(),
})

export const api = exposeAsRoute(agent)

Not literal code — just the shape of the thing.

Useful links

Evals overview

Measure quality, track regressions, and iterate safely.

Observability

Traces, logs, and token usage for debugging in prod.

Guardrails

Reduce injection risk and sanitize agent outputs.

Framework integration

Plug into web frameworks like Next.js and friends.

License

Mastra is open-source under Apache 2.0.

GitHub (mastra-ai)

Code, issues, releases, and community activity.