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MCP-B Transports
What the publisher saysMCP-B Transports implements postMessage, browser-extension messaging, and iframe communication for browser MCP integrations.
Best for: Developers implementing one reviewed browser communication path between an MCP client, extension, page, or iframe.
Limitations: A ready-to-run MCP server or browser messaging that lacks reviewed origin, source, authentication, and permission boundaries.
- Public use
- 86,339 npm downloads in 30 days · 64 GitHub stars · 16 forks
- Activity
- Package v4.0.0 · repository updated 12 Jul 2026
- Community
- 7 open issues · Discussions available
- Checked
- 14 Jul 2026
Source facts only. Not tested or recommended by Agent Blocks.