Long-running upstream skills emit MCP notifications/progress on the SSE
stream. Without forwarding, the gateway swallows them and the MCP
client (Claude Code, Cursor) aborts the tools/call on its idle timer
after ~60s — even though the HTTP stream stays warm.
Gateway now passes the SDK's extra.sendNotification through to
UpstreamAgent.callTool. Any non-response frame with a method but no id
becomes a notification on the client side. Each tools/call carries a
progressToken (client-supplied or request-id fallback) so the client
can correlate.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
agent-builder.build (and any long-running skill) takes minutes — LLM
loop + sandbox tests + deploy + wait-for-live-card. A plain JSON POST
to /mcp gets killed by ingress idle timeouts (~60s on traefik) and the
gateway sees "fetch failed" while the upstream is still running.
UpstreamAgent.callTool now negotiates ``Accept: text/event-stream`` on
tools/call. We drain SSE frames, return the final tools/call result,
and fall back to plain JSON if the upstream doesn't speak SSE (older
a2a-pack). Elicit relaying isn't wired yet; for now any
elicitation/create frame is ignored.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
On login the gateway now captures user.id from /v1/auth/login, derives
the user's MinIO bucket (user-<id>-files), and persists both in
~/.a2a/credentials.json. UpstreamAgent.callTool injects
``params._meta = { cp_jwt, cp_url, bucket }`` on every tools/call so
upstream agents see the same caller context the platform orchestrator
provides. Unauthenticated clients omit _meta — back-compat preserved.
Requires a2a-pack with the matching _meta handler in
``a2a_pack/mcp/server.py`` (companion change in apps/a2a).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Local MCP server that exposes any number of deployed A2A agents to
Claude Code, Cursor, Windsurf, and other MCP clients. Reuses the
~/.a2a/credentials.json token written by the Python a2a CLI. Adding
or removing agents is a single ~/.a2a/mcp.json edit.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
