MCP Inspector 2.2.0 moves to TypeScript SDK 2.0.0 stable and adds a v1 to v2 migration guide
MCP Inspector released 2.2.0 on 2026-08-12, upgrading from TypeScript SDK 2.0.0-beta.5 to the stable 2.0.0 packages, adding a v1 to v2 migration guide, fixing the MCP Apps sandbox proxy so it ships its static assets, and forwarding the negotiated Mcp-Protocol-Version header through the remote proxy. The release also publishes a six-month roadmap running to February 2027.
MCP Inspector, the official debugging tool for MCP servers, released 2.2.0 on 2026-08-12. The release moves the tool off the TypeScript SDK beta line, upgrading from 2.0.0-beta.5 to the stable 2.0.0 packages (#1989), and adds a documented v1 to v2 migration guide for Inspector users (#1960).
Two fixes matter for protocol fidelity: the remote proxy now forwards
the negotiated Mcp-Protocol-Version header instead of dropping it
(#1963), and the MCP Apps sandbox proxy works again because the
clients/web/static assets are shipped in the published package
(#1934). The Docker image also publishes on loopback by default and
makes a mounted state directory writable (#1974), narrowing its default
network exposure.
The release lands five weeks after 2.1.0 added SEP-2243 header mirroring and includes a published six-month roadmap covering August 2026 through February 2027 (#1981).
Related spec revisions
- MCP 2026-07-28 - current
How was this verified, and what are the sources?
Published · last verified · confidence 1.00.