Community Calls
WebAssembly on Kubernetes: v2 Helm Operator, wash HTTP & WASI P3
The November 19, 2025 wasmCloud community call is a deep dive into running WebAssembly on Kubernetes with the new wasmCloud v2 runtime. Eric Gregory demos a fresh end-to-end install of the v2.0 release-candidate Kubernetes operator using Helm and kind, then Lucas Fontes walks through a major rework of HTTP in the wash runtime that pulls HTTP, gRPC, and HTTP/2 handling close to the runtime instead of routing it over the network. Bailey Hayes closes with the road to WASI P3 — why P3 components will align on Wasmtime 40 in December — and the group untangles how wasmCloud actually relates to Kubernetes, wRPC, and the schedulers that place workloads.
JCO, Hono on WebAssembly & the wasmCloud v2 Component Model
The November 12, 2025 wasmCloud community call — broadcast live from the project pavilion at KubeCon — focuses on the Wasm component model and the JavaScript tooling reaching it. Victor Adossi gives a tour of JCO, the toolchain for building and running WebAssembly components in JavaScript, including new standalone jco transpile releases, the first stable release of jco-stl with a Hono WebAssembly integration, and ongoing JCO async work for the WASI P3 component model. Bailey Hayes shares that wash 2.0.0 RC3 is out, previewing the simpler new wasmCloud v2 runtime and its plugin-based custom-host story.
wasmCloud v2 on Kubernetes: Runtime Operator, wash host & WASI P3
The November 5, 2025 wasmCloud community call is centered on WebAssembly on Kubernetes. Lucas Fontes demos the next generation of wasmCloud — wasmCloud v2 — bringing up a Kubernetes cluster, installing the runtime operator and a new wasmCloud host over NATS via Helm, and scheduling a workload onto one of three host groups using nothing but kubectl get host. The new wash host command turns the single wash binary into a cluster host, with all scheduling intelligence moved into the operator so you can bring your own scheduler — or even your own host. Bailey Hayes frames the road to v2.0.0-rc1, and Victor Adossi closes with an update on JCO standing up as a second reference implementation for WASI Preview 3.
openapi2mcp Wasm Plugin Demo, WASI P3 & JCO Async for the Component Model
The October 29, 2025 wasmCloud community call is a short, demo-led session focused on the Wasm component model and the tooling around it. Liam Randall demos the new openapi2mcp plugin for Wasm Shell, which turns an OpenAPI specification into a ready-to-run MCP server packaged as a WebAssembly component, then shows pushing it to Kubernetes and wiring it into Claude. Victor Adossi gives a WASI P3 update: the P3 feature set is essentially complete on the Rust side, and his JCO async work — transpiling P3 components to JavaScript for Node and the browser — is on track to become the second WASI P3 reference implementation.
wasmCP MCP Servers & Long-Running Services on the Wasm Component Model
The October 22, 2025 wasmCloud community call is a two-demo deep dive into the Wasm component model. Corey and Ian demo wasmCP, a framework for building Model Context Protocol (MCP) servers as composable WebAssembly components in Rust, Python, and TypeScript — scaffolding tools, chaining them through a transport-agnostic WIT-defined middleware pattern, and running the result on Wasmtime, wash, or Cosmonic Control. Brooks Townsend then introduces wasmCloud services: long-running components targeting the WASI CLI world that open the door to component-native capability providers.