build(deps): bump @mastra/core from 1.52.1 to 1.61.0

[dependabot]

Bumps @mastra/core from 1.52.1 to 1.61.0.

Release notes

Sourced from @​mastra/core's releases.

August 19, 2026

Highlights

Durable execution for Agents API (no deploy required)

Stored agents created via the Agents API can now run with durable: true, enabling durable execution (with configurable loop settings) without shipping new code, and inheriting cache/pubsub from your server for multi-replica durability.

Cloudflare Sandbox provider for remote workspaces

The new @mastra/cloudflare-sandbox provider runs commands and file operations via a deployed Sandbox Bridge Worker, adding a new deployment/runtime option for Mastra workspaces.

MCP protocol upgrades: stateless 2026-07-28 + multi-round elicitation

@mastra/mcp adds opt-in support for the stateless 2026-07-28 protocol revision (server + client) plus updated elicitation support using the spec’s multi round-trip mechanism, enabling more modern MCP interoperability without breaking legacy connections.

Sandbox checkpoints (Local + Platform/Railway capability signaling)

Sandboxes now advertise supportsCheckpoints, and LocalSandbox gains filesystem-backed checkpoints (checkpointName/seedCheckpointName) so sessions can boot from and persist real snapshots—unlocking faster warm-start patterns (also supported in Platform and Railway sandboxes).

RAG: persistable GraphRAG snapshots

@mastra/rag adds serialize() and GraphRAG.deserialize() so knowledge graphs can be saved/restored instead of rebuilt on every start, dramatically reducing startup cost for large corpora.

Breaking Changes

• None called out in this changelog.

Changelog

@​mastra/core@1.60.0

Minor Changes

• Added ProcessHandle.closeStdin() to signal end-of-file to background processes. Local and Docker sandboxes support closing stdin, while providers without an available stdin-close API return a provider-specific unsupported-operation error. Providers signal the unsupported case with the new UnsupportedStdinCloseError, and the base class supplies that behavior by default so existing ProcessHandle subclasses keep compiling. Calling handle.writer.end() also closes stdin, and finishes without an error when the provider cannot close stdin. (#21606)

  Also in: @​mastra/agentcore@​0.4.0, @​mastra/apple-container@​0.4.0, @​mastra/blaxel@​0.7.0, @​mastra/daytona@​0.8.0, @​mastra/docker@​0.6.0, @​mastra/e2b@​0.9.0, @​mastra/modal@​0.5.0, @​mastra/platform-workspace@​1.3.0, @​mastra/railway@​0.6.0, @​mastra/vercel@​1.4.0

• Added live-tail PubSub subscriptions with startFrom: "latest" and an explicit supportsOffsets capability. (#21535)

  await pubsub.subscribe(topic, callback, { startFrom: 'latest' });

  The default remains "earliest", and existing consumer groups keep their checkpoint.

• Added optional filename property to FilePayload. When an agent emits a file chunk with a filename, the Channel layer now preserves it through to the Chat SDK adapter instead of generating a name from the MIME type. Existing file chunks without a filename continue using the generated.<ext> fallback. (#21135)

  const chunk: FilePayload = {
    data: fileBuffer,
    mimeType: 'text/plain',
    filename: 'report.txt', // preserved through to the channel adapter
  };

• Client-executed tools (tools without a server-side execute) now fire their onOutput lifecycle hook when the browser returns the tool result on a follow-up request. Previously onOutput only fired after a server-side execute, so client tools never reported their output. (#21377)

... (truncated)

Commits

• ce66f91 chore: version - exit prerelease mode
• 0f94498 chore: regenerate providers and docs [skip ci]
• 0fe0a2e chore: version packages (alpha) (#22003)
• cc65495 chore: version packages (alpha) (#22001)
• 7c60df5 fix(core): stop persisting mastra__authToken in cleartext in durable state (#...
• 27e2b56 chore: version packages (alpha) (#21840)
• b6a771e feat(deployer): add configurable graceful shutdown (#21990)
• 9267e9b feat(datasets): caller-driven experiments — run the loop from your own orches...
• acc3471 fix(datasets): use snapshot semantics for item versions (#21979)
• 57c5103 fix(factory): use factory defaults for board run memory settings (#21899)
• Additional commits viewable in compare view

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[github-actions]

Coverage Report for server

Status	Category	Percentage	Covered / Total
🟢	Lines	98.38% (🎯 97%)	3173 / 3225
🟢	Statements	97.7% (🎯 96%)	3322 / 3400
🟢	Functions	98.74% (🎯 97%)	551 / 558
🟢	Branches	89.1% (🎯 87%)	1300 / 1459

File Coverage

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[github-actions]

Coverage Report for web

Status	Category	Percentage	Covered / Total
🟢	Lines	97.32% (🎯 96%)	1526 / 1568
🟢	Statements	96.24% (🎯 95%)	1613 / 1676
🟢	Functions	95.82% (🎯 95%)	643 / 671
🟢	Branches	90.77% (🎯 88%)	1013 / 1116

File Coverage

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[github-actions]

Coverage Report for shared

Status	Category	Percentage	Covered / Total
🟢	Lines	99.12% (🎯 98%)	226 / 228
🟢	Statements	81.2% (🎯 80%)	242 / 298
🟢	Functions	100% (🎯 98%)	76 / 76
🟢	Branches	63.52% (🎯 62%)	101 / 159

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[github-actions]

Coverage Report for widget

Status	Category	Percentage	Covered / Total
🟢	Lines	99.56% (🎯 98%)	229 / 230
🟢	Statements	99.19% (🎯 96%)	246 / 248
🟢	Functions	100% (🎯 98%)	45 / 45
🟢	Branches	95.96% (🎯 92%)	119 / 124

File Coverage

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Generated in workflow #2025 for commit b6c058b by the Vitest Coverage Report Action

[dependabot]

Superseded by #1105.