The MCP server minted a hub SA token once at startup and reused it for
the life of the process, so a long-running server 401'd silently after
the ~1h token TTL.
- utils/http: the hub round-tripper now sources the SA token via a
func() string per request (static constructors preserved), so a
renewing source keeps long-lived clients authenticated.
- kubernetes: add HubTokenRenewer — re-mints the kubeshark-cli token
before expiry (using the TokenRequest expiry, 5m margin), concurrency-safe.
- mcp proxy mode: use the renewer so the token auto-renews.
- mcp --url mode: cannot mint (no kube access) — accept an explicit
--token / KUBESHARK_HUB_TOKEN, and on 401 surface a clear 'token
expired/invalid, re-mint and restart' message instead of an opaque
API error.
console is intentionally untouched (non-functional pending the
Connect-RPC re-point); it gets renewal when that migration lands.
* Add MCP (Model Context Protocol) server command
Implement `kubeshark mcp` command that runs an MCP server over stdio,
enabling AI assistants to query Kubeshark's network visibility data.
Features:
- MCP protocol implementation (JSON-RPC 2.0 over stdio)
- Dynamic tool discovery from Hub's /api/mcp endpoint
- Local cluster management tools (check_kubeshark_status, start_kubeshark, stop_kubeshark)
- --url flag for direct connection to existing Kubeshark deployment
- --kubeconfig flag for proxy mode with kubectl
- --allow-destructive flag to enable start/stop operations (safe by default)
- --list-tools flag to display available tools
- --mcp-config flag to generate MCP client configuration
- 5-minute cache TTL for Hub tools/prompts
- Prompts for common analysis tasks
* Address code review comments for MCP implementation
- Add 30s timeout to HTTP client to prevent hanging requests
- Add scanner.Err() check after stdin processing loop
- Close HTTP response bodies to prevent resource leaks
- Add goroutine to wait on started process to prevent zombies
- Simplify polling loop by removing ineffective context check
- Advertise check_kubeshark_status in URL mode (was callable but hidden)
- Update documentation to clarify URL mode only disables start/stop
* Fix lint errors in mcpRunner.go
- Use type conversion instead of struct literals for hubMCPTool -> mcpTool
and hubMCPPromptArg -> mcpPromptArg (S1016 gosimple)
- Lowercase error string to follow Go conventions (ST1005 staticcheck)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
