Artifact reads retry once when an idle connection has gone stale

Artifacts are saved outputs that Claude Code fetches through an MCP server (an add-on service that gives Claude extra tools). To save time, Claude Code reuses one open connection for several requests. If the server had already closed that connection, a request could fail.

Now, when a read-only artifact request fails for that reason, Claude Code sends it once more on a new connection. Requests that change something are not resent. The request that lists the server's tools, and the other requests to this server, now go through the same handling.