Browse reusable Agent Skills, each with a clear purpose and practical guidance.
Create/modify/debug platform check. Trigger: "platform check", "platform-checks", "upgrade check", "restart check", or writing Check class testing feature survival across restarts/upgrades. Also edits in misc/python/materialize/checks/all_checks/.
Local code review of current branch vs Materialize standards. Trigger: "review my code", "review my changes", "check my diff", "does this look ok", "what do you think of this PR", "code review", or look over changes before merging. Also PR number + wants feedback on quality, style, correctness.
Trigger: "profile Materialize", "check memory usage", "analyze binary size", "debug performance", or mentions profiling, samply, heaptrack, flame graphs, memory checking, binary size, slow queries, high CPU/memory in Materialize. Also "slow" or "using too much memory" without explicit profile mention.
Debug SQL execution time via distributed tracing (OpenTelemetry / Tempo). Trigger: "why is this query slow", "where is the time going", "this SELECT takes forever", or latency breakdown for SQL statement. Also tracing queries, span analysis, Tempo traces, trace IDs, opentelemetry_filter.
Trigger: "run Materialize locally", "start environmentd", "check compilation", "format code", "lint", "cargo check", "cargo fmt", "cargo clippy", "bin/fmt", "bin/lint", or mentions compiling, building, running, formatting, linting, log filters, jemalloc, CockroachDB setup in Materialize. Also "how do I run this" or "it won't compile".
Run tests + pick test framework in Materialize. Trigger: "run tests", "run testdrive", "run sqllogictest", "run mzcompose", "run cargo test", "run pgtest", "rewrite test results", "add a test", "reproduce a bug", "write a regression test", or mentions testing, testdrive, sqllogictest, mzcompose, pgtest, cargo test, nextest, flaky tests, test failures. Also "test this" or "how do I verify this works". Specifics: mz-platform-checks (upgrade/restart survival), mz-parallel-workload (concurrent stress), mz-limits-test (many objects).
Automation and verification guide for running Native SDK apps. Use when the user asks to test a running app, inspect runtime state, list windows, wait for readiness, drive widgets, take deterministic screenshots, send bridge commands, debug why automation is not connected, create smoke tests, or verify a Native SDK example in a GUI-capable session.
Discovery skill for the Native SDK, the complete toolkit for building native desktop applications - views are declarative Native markup (.native), logic is plain Zig, and the toolkit's own engine renders every pixel, with WebView surfaces as the optional web-content path. Use when the user asks what the Native SDK is, how to build a Native SDK app, author native UI, scaffold an app, configure app.zon, add bridge commands, embed web content, package an app, test a running app, or automate a Native SDK app.
Authoring guide for native-rendered Native SDK apps - declarative Native markup (.native) views plus Zig logic on the UiApp loop. Use when building or modifying native UI (widgets, layout, bindings, messages), writing .native files, wiring Model/Msg/update, testing markup views, or verifying a native app through the automation harness.
Authoring guide for TypeScript app cores - Model, Msg, update, and the pure functions they call, written in the closed app-core subset and compiled ahead-of-time to arena-backed Zig by the @native-sdk/core transpiler. Use when writing or modifying a src/core.ts app core, fixing subset checker errors (NS1001-NS1060), or deciding how to express state, messages, text (bytes and the byte-text string methods), text input, continuous controls (sliders, scroll), effects (Cmd), subscriptions (Sub), the host-event wiring channels (frameMsg, keyMsg, appearanceMsg, chromeMsg, envMsgs, app.zon assets), derived values, the view_unbound lint opt-out, local mutation of owned arrays, or how to split a core into modules under src/ (relative imports, namespace imports, @native-sdk/core/text, @native-sdk/core/events).