Public OSS portfolio of Kai Siren.
Focus: LLM observability, agent devex, tooling for AI consumers.
- o2r (otel-a2a-relay) - OpenTelemetry relay for the A2A agent protocol. Translates JSON-RPC 2.0 agent calls into OTel spans exported to Phoenix, Tempo, and Grafana.
- gauntlet - Adversarial MCP server and Claude Code plugin that stress-tests HTTP APIs under sustained two-role (Attacker plus Inspector) attack.
- repo-recall - Rust hydration layer joining git, gh, and Claude Code session history into a local-first MCP and HTTP surface. Published via Homebrew tap.
- cli-guard - Go security-boundary framework for urfave/cli - audit logging, scope tokens, and allowlist enforcement.
- Personal site: coilysiren.me
- Operational back-office: coilyco-bridge (canonical at Forgejo)