March 24th SLIM WG Meeting Notes

[NickG44]

March 24th - SLIM WG Meeting Notes:

Recording: Here

Attendees: (12)

László Puskás (Cisco)
Michele Papalini (Cisco)
Sandor Magyari (Cisco)
Sujata Tibrewala (Cisco)
Luca Muscariello (Cisco)
Nick Gill (Cisco)
Laszlo Gecse (Cisco)
Sam Betts (Cisco)
Amit Kumar (Cisco)
Bendeguz Csirmaz (Cisco)
Elaine Powers (Cisco)
János Sarusi (Cisco)

1. Demos & Technical Presentations

Observability Demo:

Showcased a SLIM-based observability workflow using applications from the Agentic app repository.
Workflow: A monitored app generates metrics (latency, connections), monitored by a second app. When latency spikes, a special agent is invited to analyze telemetry and generate a root cause report using an external AI service.
Infrastructure includes SLIM node, OTEL collector, Prometheus exporter, and Grafana dashboard.
Live metrics, dynamic agent invitation/removal, looped alerting and analysis.
.NET RPC Demo:

Presented .NET SDK for SLIM RPC communication.
Demonstrated unary and streaming RPC between server and client, compatible with other supported languages.
Next step: Integrate with A2A .NET SDK for full A2A-SLIM support; demo postponed due to current instability.

4. Engineering & Compatibility Discussion

A2A v1.0 Integration:

-Discussion on migration to A2A v1.0 (released March 12).
-Current SLIM integrations are on A2A spec v0.3.0; SDKs are updating to support v1.0.
-Go SDK now supports both v0.3.0 and v1.0 via handler versioning and compatibility tests.
-Consensus to mirror dual-version support in SLIM bindings where practical; review each language for compatibility strategy.

Testing & Cross-Versioning:

Emphasis on testing cross-version agent interactions (old client/new server, vice versa).
SLIM to adopt compatibility tests similar to A2A Go SDK.

5. Engineering Updates & Roadmap

SLIM benchmarking in progress; aim to compare performance vs. NATS and identify bottlenecks.
Group session transport pending review, expected in next SLIM release.
Session control/application data split: Code ready, testing backward compatibility; release planned soon.
Rendezvous point under discussion, possibly leveraging public channels for agent meetups.
Multi-cluster deployment types: New epic started, may not make the next milestone.
Continued work on Java/Kotlin support.
WebSocket support update expected next week.

6. Closing & Next Steps

Roundtable on current projects and upcoming releases.
Next SLIM release targeted for end of week (pending readiness).
Demos on group session transport and A2A integration postponed to next meeting.