Domain-entity state machine modeling. Distinct from UI state-transition-mapping: this is the business lifecycle of entities (Order / User / Subscription / Document / Claim). Per state: invariants + allowed/disallowed ops + entry/exit effects. Per transition: trigger + guard + effect + rollback + idempotency. Flat / hierarchical (sub-states) / parallel (orthogonal regions). Transition matrix + explicit invalid transitions + side-effect catalog. Mermaid stateDiagram-v2 with optional PNG export.
Plugin state-machine-diagramming from marketplace svens-claude-plugins in SSiertsema/claude-code-plugins. Commands read from the repo's manifest — 1 month ago.
state-machine-diagrammingDomain-entity state machine modeling. For a business object, enumerate lifecycle states, transitions with triggers + guards + effects, terminal states, and invariants per state. Distinct from state-transition-mapping (UI component states). Supports event-driven and condition-driven transitions, para
Frame A/B tests with falsifiable hypothesis, variants, pre-committed primary/secondary/guardrail metrics, MDE, sample size (formula shown), duration spanning a weekly cycle, peek policy, pre-committed decision rule, validity risks with mitigations, and ethics review. Mermaid diagrams with optional PNG export.
1 skill
Write, audit, or split acceptance criteria for a user story. Given/When/Then (Gherkin) default + rule-based + mixed formats. Systematic coverage (happy path + negative + edge + boundary + a11y + optional performance/security/data/integration). INVEST at story + AC level. SPIDR split (Spike / Path / Interface / Data / Rule) when story too big. Scenario outlines for parametric data. Mermaid coverage pie + split diagrams with optional PNG export.
1 skill
Define accessibility requirements against WCAG 2.2 AA (default), AAA, EN 301 549, EAA, Section 508, ADA. Produces per-feature Given/When/Then criteria, assistive-technology support matrix per platform, combined automated + manual + AT + user-testing plan, and remediation priority for existing products. Not a conformance audit. Mermaid diagrams with optional PNG export.
1 skill
Write, review, supersede, or index Architecture Decision Records. Michael Nygard format (default) + Y-statement alternative. Immutable once accepted — supersession chain preserves old ADRs. Status lifecycle (Proposed / Accepted / Deprecated / Superseded). ADR log with chronological index + supersession chains visible. Review mode flags stale ADRs + missing consequences. Integrates with traceability-matrix. Mermaid timeline with optional PNG export.
1 skill
Bottom-up thematic clustering of unstructured items (research notes, interview quotes, brainstorm ideas, feedback) using the KJ method. Discovers emergent themes with evidence traceability, identifies patterns/tensions/gaps, flags outliers, and prioritizes clusters by signal strength. Mermaid diagrams with optional PNG export.
1 skill
Algorithm design pre-implementation: problem + inputs/outputs + constraints, ≥2 candidate approaches compared on time+space+stability+in-place+parallelism, chosen approach with loop/data/global invariants, language-neutral pseudocode, correctness argument (invariant / induction / preservation / reduction), edge-case catalog, worst/avg/space complexity, numerical + concurrency concerns, property-based + boundary + performance + fuzz tests, parallelization + out-of-core + streaming variants.
1 skill
Visual workflow automation with templates, orchestration, and lifecycle management
5 skills · 8 commands · 3 agents
Editorial diagrams in your brand, as self-contained HTML and SVG. Architecture, flowcharts, sequence, state machines, ER and database schemas, timelines, swimlanes, org charts, Gantt, Wardley maps, user journeys, service blueprints, UML class, lifecycle phase maps, and charts from bar, line and scatter to Sankey, treemap and heatmap, plus many more. Redraws draw.io, Mermaid, Excalidraw and PlantUML files. Exports SVG and PNG.
1 skill · 7 commands
Official Google Cloud Storage (GCS) plugin. Manage buckets and objects, transfer data, and configure MCP, FUSE, IAM, security, lifecycle rules, signed URLs, Terraform, and the CLI.
5 skills · 1 MCP server
Universal memory runtime for Claude Code with cross-session memory, entity-aware recall, lifecycle hooks, skills, commands, and memory-curator agents
7 skills · 7 commands · 2 agents · hooks
Free AI-powered SEO toolkit — audit websites, plan content strategy, optimize pages, generate schema markup, cluster keywords, and track AI visibility. Works with any website or codebase.
11 skills · 6 commands
33 C-level advisory skills (install the separate companion c-level-agents plugin for the persona layer): virtual board of directors (CEO, CTO, COO, CPO, CMO, CFO, CRO, CISO, CHRO) plus General Counsel, CDO, CAIO, CCO, and VP of Engineering (DORA delivery throughput analyzer, engineering hiring funnel calculator with conversion + pipeline gap, eng team structure designer with squad/tribe + manager-trigger), executive mentor, founder coach, orchestration (Chief of Staff, board meetings, decision logger), strategic capabilities (board deck builder, scenario war room, competitive intel, M&A playbook), culture frameworks. The 13 cs-* persona agents + 21 /c-level-agents:* slash commands (founder-mode router, office-hours intake, multi-role boardroom, strategic sprint pipeline, cross-model consensus, cooldown freeze) ship in the companion c-level-agents plugin.
34 skills · hooks
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