arn-spark — Claude Code plugin: from raw idea to prototype
A Claude plugin that walks a raw idea through product discovery, personas and architecture to a working prototype.
/plugin marketplace add anthropics/claude-plugins-community
/plugin install arn-spark@claude-communityWhat arn-spark does
Arness Spark is a greenfield exploration plugin for Claude. It moves an idea along a guided pipeline: product discovery, persona generation, competitive research, brand naming, architecture vision, use case authoring, project scaffolding, visual sketch exploration and interactive prototype validation. What you end up with is a validated concept, a prioritized feature backlog and a scaffolded codebase ready for development.
The plugin ships 19 exploration skills and 13 specialist agents. Everything runs inside Claude on your own machine — no telemetry, no usage collection, nothing sent off-device by the plugin itself; skills and agents work on files in your working directory. A few skills suggest outside research such as web browsing, domain lookups or trademark checks, and those stay user-driven actions rather than plugin-initiated requests.
Anthropic API traffic is handled by the host harness, so how your prompts and context get processed follows Claude's own data usage documentation.
What it helps with
- turn a rough idea into a validated concept
- generate user personas for a new product
- sketch an architecture vision before writing code
- write use cases and prioritize the feature backlog
- scaffold the project and validate a prototype
Example prompts for the agent
- Run my service idea through arn-spark, starting with product discovery and personas
- Draft the architecture vision and a prioritized feature backlog for this project
- Scaffold the project and show me an interactive prototype to validate
How to install arn-spark
Plugin marketplace
/plugin marketplace add anthropics/claude-plugins-community/plugin install arn-spark@claude-communityStep by step, with commands for each platform: Claude Code plugins: marketplaces, installing, and building your own
Questions about arn-spark
How do I install arn-spark in Claude Code?
Add the marketplace first: /plugin marketplace add anthropics/claude-plugins-community. Then install the plugin: /plugin install arn-spark@claude-community.
What does arn-spark do?
It guides an idea through product discovery, personas, competitive research, naming, architecture, use cases, scaffolding and prototype validation. You get a concept, a feature backlog and a scaffolded codebase.
Does arn-spark send my data anywhere?
The plugin runs locally in Claude and emits no telemetry of its own. Network access to the Anthropic API comes from the Claude host.
Source text
arn-spark · MIT
# Arness Spark Greenfield exploration plugin for Claude Code. Takes a raw idea through product discovery, persona generation, competitive research, brand naming, architecture vision, use case authoring, project scaffolding, visual sketch exploration, and interactive prototype validation — producing a validated concept, a prioritized feature backlog, and a scaffolded codebase ready for development. Ships 19 exploration skills and 13 specialist agents. ## Install ``` # Add the Arness marketplace (one-time) /plugin marketplace add AppsVortex/arness # Install this plugin /plugin install arn-spark@arn-marketplace ``` ## Documentation Full guide: [docs/plugins/arn-spark.md](../../docs/plugins/arn-spark.md) · [arness.appsvortex.com](https://arness.appsvortex.com/) ## License MIT. See [LICENSE](./LICENSE). ## Privacy Arness Spark runs entirely inside Claude Code on your local machine. The plugin emits no telemetry, collects no usage data, and transmits nothing off-device on its own — all skills and agents operate on files in your working directory. Claude Code (the host harness) handles its own Anthropic API communication; refer to [Anthropic's privacy policy](https://www.anthropic.com/legal/privacy) and [Claude Code's data usage documentation](https://code.claude.com/docs/en/data-usage) for details on how the host processes your prompts and context. Some skills suggest external research — any web browsing, domain lookups, or trademark checks are surfaced as user-driven actions, not plugin-initiated network requests.
© AppsVortex · MIT · AppsVortex/arness
