Skill rating

Design engineering principles for making interfaces feel polished. Use when building UI components, reviewing frontend code, implementing animations, hover states, shadows, borders, typography, micro-

Install, upgrade, and operate the Sim Helm chart on Kubernetes. Covers install path selection (inline / existingSecret / External Secrets Operator), required secret generation, the values.yaml mental

Add hosted API key support to a tool so Sim provides the key (metered and billed to the workspace) when a user has not brought their own. Use when adding a `hosting` config to a tool under `apps/sim/t

Review PRs and diffs for unbounded memory loading, concurrency explosions, oversized payload materialization, and missing pagination or byte caps. Use when reviewing cleanup jobs, background jobs, dat

Audit a Sim dynamic selector across its declaration, browser-safe manifest, server attachment, provider primitive, and selectors.execute security boundary. Use when reviewing selector correctness, sec

Add a runtime feature flag (AppConfig-backed on prod, secret fallback off-prod), global by default or optionally gated by workspace id, org id, user id, or platform admin

Validate an existing Sim webhook trigger against provider API docs and repository conventions

Add a new table column type to Sim — registry entry, icon, storage shape, coercion, and the behavioral hooks the grid and API read. Use when adding a value kind under `apps/sim/lib/table/column-types/

Add a code-defined table enrichment (registry entry) under `apps/sim/enrichments/` backed by an ordered provider cascade, ensuring every provider tool it calls has hosted-key support. Use when adding

Add or update a Sim dynamic selector using the shared manifest, server attachment, and selectors.execute path. Use for provider-backed, internal, or local option lists referenced by block, trigger, or

Drive a PR to a clean review (Greptile 5/5, zero open threads) — ships if needed, keeps it mergeable against staging, re-triggers both Greptile and cubic, fixes real findings, replies to and resolves

Add a new Sim settings page, or audit existing settings pages for design-system compliance with the shared SettingsPanel layout. Use when creating a settings tab, or when asked to check/clean up setti

Invoke whenever writing, changing, reviewing, or sweeping tests. Authoring gate for new tests, plus an audit workflow for low-value, implementation-coupled, or duplicative tests and the test-only prod

Add or upgrade a curated, immutable managed CLI for Sim Function sandboxes, including client-safe catalog metadata, a pinned server-only installation recipe, checksum and executable verification, prov

Audit an existing enterprise permission-group item end-to-end — registry entry, schemas, type, defaults, tolerant parser, admin UI, capability rule, enforcement site, and tests — proving the gate actu

Create or migrate a protected Sim resource operation in the shared Principal and application-use-case architecture across internal APIs, public or versioned APIs, Copilot, and other trusted tool adapt

Spawn parallel task agents to explore a given area of the codebase from multiple angles, then use their findings to answer the question or build a plan. Use when a task needs broad fan-out exploration

Gate a block's visibility — ship an unreleased block as a preview (hidden until revealed via AppConfig/env), reveal it to admins/orgs, GA it, or kill-switch a shipped block

This skill encodes Emil Kowalski's philosophy on UI polish, component design, animation decisions, and the invisible details that make software feel great.

Validate a model entry (or every model in a provider) in apps/sim/providers/models.ts against the provider's live API docs (no hallucination — reports what cannot be verified)

Add a new LLM model to apps/sim/providers/models.ts with specs verified against the provider's live API docs (no hallucination)

Analyze and fix useCallback anti-patterns in your code

Analyze and fix URL/query-param state anti-patterns — manual useSearchParams reads, hand-built query mutations, view-state trapped in useState, and objects in the URL

Anti-slop frontend skill for landing pages, portfolios, and redesigns. The agent reads the brief, infers the right design direction, and ships interfaces that do not look templated. Real design system

Run all code quality skills — effects, memo, callbacks, state, React Query, emcn design review, url-state, comments, and test-audit — analyzing in parallel, then applying fixes sequentially

Audit React Query usage for best practices — key factories, staleTime, mutations, and server state ownership

Analyze and fix useMemo/React.memo anti-patterns in your code

Analyze and fix unnecessary useState, derived state, and server-state-in-local-state anti-patterns

Validate an existing Sim integration (tools, block, registry, and resolved-secret/model-input boundaries) against the service's API docs and Sim execution conventions

Review UI code for alignment with the emcn design system — components, tokens, patterns, and conventions

Create webhook or polling triggers for a Sim integration

Create tool configurations for a Sim integration by reading API docs

Analyze and fix redundant or self-explanatory inline comments — remove noise, promote genuine documentation to TSDoc

Analyze and fix useEffect anti-patterns in your code

Keep the executable tool registry out of client-reachable module graphs — when to read `@/tools/metadata` instead of `getTool`, how to measure whether an import edge pulls the registry, and how to reg

Author or review a Drizzle DB migration for zero-downtime safety — expand/contract phasing, backward-compatibility with the deployed app version, and writing the `-- migration-safe` acknowledgment the

Commit, push, and open a PR to staging in one shot — runs the cleanup pass and, when migrations changed, the db-migrate safety review first

Add a complete Sim integration from API docs, covering tools, block, icon, optional triggers, registrations, resolved-secret/model-input safety, and integration conventions. Use when introducing a new

Add or update a Sim knowledge base connector for syncing documents from an external source, including auth mode, config fields, pagination, document mapping, tags, and registry wiring. Use when workin

Create or update a Sim integration block with correct subBlocks, conditions, dependsOn, modes, canonicalParamId usage, outputs, and tool wiring. Use when working on `apps/sim/blocks/blocks/{service}.t

Add a new governed item to Sim's enterprise permission groups — a boolean restriction, an allowlist, or a denylist — wired end-to-end from the field registry through the capability rule to the server

The response, error, pagination, and validation contract every `/api/v2` endpoint must satisfy. Use when adding or changing a route under `apps/sim/app/api/v2/`, or when auditing one for conformance.

Validate an existing knowledge base connector against its service's API docs