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On October 23, 2026, Mastra released MCP Events, enabling MCP servers to send real-time events to connected clients through three methods: push, poll, and webhook, changing the previous situation where servers could only respond passively to requests and clients had to poll on their own. This feature requires @mastra/mcp@2.5.0 and @mastra/core@1.79.0 or later, and is built on Mastra's MCP 2.0 support. Agents can receive event notifications via MCPEventsSignalProvider, workflows can be triggered to run by subscribed events, and once observability is configured, event traces are collected automatically. The feature is currently still experimental, and the API may change between versions.
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Mastra launches MCP Events: MCP servers can push real-time events to clientsDevelopments
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- Source:Mastra Blog
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Oct 23
Mastra BlogFirst-party
Mastra launches MCP Events: MCP servers can push real-time events to clients
Mastra releases MCP Events, enabling MCP servers to send real-time events to connected clients via three methods: push, poll, and webhook, changing the previous situation where servers could only respond passively to requests and clients had to poll on their own. This feature requires @mastra/mcp@2.5.0 and @mastra/core@1.79.0 or above, and is built on Mastra's MCP 2.0 support. Agents can receive event notifications via MCPEventsSignalProvider, workflows can be triggered to run by subscribed events, and event traces are automatically collected once observability is configured; currently this feature is still experimental, and the API may change across versions.