08 · TypeScript framework + Mastra Cloud · LAST REVIEWED SEPTEMBER 2026
Mastra review: the TypeScript-native pick
SHORT ANSWER
Mastra
Rank 08 of 10
| Criterion | Weight | Score | Why |
|---|---|---|---|
| Cross-framework interop | 20 | 6.5 | MCPClient connects to MCP servers and MCPServer exposes Mastra agents, tools and workflows. A2A is listed in the docs navigation but its detail page returned 404, so depth is unconfirmed. |
| Multi-agent coordination model | 18 | 7.0 | Supervisor agents delegate to subagents using their descriptions, with delegation hooks; graph workflows with .then(), .branch() and .parallel(). Agent networks are deprecated. |
| Shared context and memory | 14 | 7.0 | Memory with isolation between subagents. |
| Production reliability | 12 | 7.0 | The multi-agent API changed (networks deprecated in favor of supervisors), so expect some churn. |
| Human-in-the-loop | 10 | 6.5 | Not a headline feature in the docs we reviewed. |
| Observability | 10 | 7.5 | Mastra Cloud includes observability events and retention by tier. |
| Languages and deployment | 8 | 7.0 | TypeScript only, but deploys to Mastra Cloud, Vercel, Netlify, Cloudflare, AWS, Azure, Kubernetes, a standalone server, or inside Next.js or Astro. |
| Pricing clarity | 8 | 7.0 | Starter $0; Teams $250/month; Enterprise custom; usage overages per 100K events and per CPU-hour. |
What is Mastra at a glance?
| Type | TypeScript framework + Mastra Cloud |
|---|---|
| Coordination model | Supervisor agents; graph workflows |
| A2A | Listed (depth unconfirmed) |
| MCP | Yes (client and server) |
| Languages | TypeScript |
| License | Apache 2.0 core + Mastra Enterprise License for ee/ |
| Hosting | Mastra Cloud, Vercel, Netlify, Cloudflare, AWS, Azure, Kubernetes, self-host |
| Pricing | Starter $0 · Teams $250/mo · Enterprise custom |
| Works with BAND | Not listed as a native integration on band.ai/integrations (Sep 2026) |
Source: github.com/mastra-ai/mastra · mastra.ai/pricing · Mastra docs: supervisor agents · Mastra docs: networks · Mastra docs: MCP overview · Mastra docs: deployment · Reviewed Sep 2026
What is Mastra?
A "modern TypeScript framework for AI-powered applications and agents." The core is Apache 2.0; code in ee/ directories is under the Mastra Enterprise License (source-available). Mastra Cloud adds hosting and observability.
How does Mastra coordinate agents?
Supervisor agents: "The parent agent uses its instructions and each subagent's description to decide when and how to delegate tasks," with delegation hooks and memory isolation between subagents. Graph workflows chain steps with .then(), .branch() and .parallel(). The earlier "agent networks" feature is deprecated: "Agent networks are deprecated and will be removed in a future major release." If you built on networks, plan the move to supervisors.
Where can Mastra run?
Almost anywhere a TypeScript app runs: Mastra Platform/Cloud, Vercel, Netlify, Cloudflare, AWS (Lambda, EC2, Bedrock AgentCore), Azure, Kubernetes, a standalone server, or embedded in Next.js or Astro. That breadth is why Mastra scores 7.0 on languages and deployment despite supporting one language.
Does it work with other frameworks?
Through MCP: MCPClient connects to MCP servers and MCPServer exposes Mastra agents, tools and workflows. A2A is listed in the docs navigation, but the detail page returned a 404 when we checked, so we have not credited it fully. Mastra is not listed as a native integration on band.ai/integrations as of September 2026; BAND's TypeScript SDK and MCP/A2A support are the route to connect it.
How much does Mastra cost?
| Plan | Price | Notes |
|---|---|---|
| Starter | $0 | 100K observability events then $10/100K, 24 CPU-hours then $0.35/hr, 15-day retention |
| Teams | $250/month | 1M events then $8/100K, 250 CPU-hours then $0.25/hr, 6-month retention, SSO, SOC 2 docs |
| Enterprise | Custom | RBAC, audit logs, SLAs |
Source: mastra.ai/pricing · Reviewed Sep 2026
What are the strengths and limitations of Mastra?
Strengths
- Best TypeScript-native option
- Broad deployment targets
- MCP both directions
Limitations
- TypeScript only
- Multi-agent API churn
- Some code under an enterprise license
Should you choose Mastra or look elsewhere?
Choose Mastra if
- your stack is TypeScript end to end
- you deploy to Vercel, Cloudflare or similar
- you want MCP in both directions
Look elsewhere if
- you need Python
- you want a stable multi-agent API with a long track record (LangGraph)
- you need cross-framework collaboration (BAND)
What should you read after the Mastra review?
Best for
Best multi-agent frameworks for TypeScript teamsRankings
See all rankings
What do readers ask about Mastra?
Is Mastra open source?
The core is Apache 2.0. Parts of the codebase in ee/ directories are under the Mastra Enterprise License.
Are Mastra agent networks deprecated?
Yes. Mastra says agent networks will be removed in a future major release; supervisor agents are the replacement.
What is the best TypeScript multi-agent framework?
For a TypeScript-native framework, Mastra. For connecting TypeScript agents with agents on other frameworks, BAND. See Best for TypeScript teams.
Running agents on more than one framework? BAND connects them in shared rooms.
See how BAND works