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Quick Start

Install a plugin and try it in under a minute.

1. Add the marketplace​

/plugin marketplace add siracusa5/harness-kit

2. Install a plugin​

Start with explain — it works in any codebase with no setup:

/plugin install explain@harness-kit

3. Use it​

Point it at any file in your project:

/explain src/index.ts

You'll get a structured breakdown: summary, key components, how it connects, patterns, gotchas, and entry points for change.

Try more plugins​

Research a topic​

/plugin install research@harness-kit
/research https://github.com/anthropics/claude-code

Fetches the repo, saves raw content, and creates a synthesis document.

Trace data lineage​

/plugin install data-lineage@harness-kit
/data-lineage orders.total_amount

Traces a column through SQL, Kafka, Spark, and JDBC code. Generates an SVG diagram.

Orient on a topic​

/plugin install orient@harness-kit
/orient authentication

Searches your knowledge graph, docs, and journal for everything related to a topic.

Capture session facts​

/plugin install capture-session@harness-kit
/capture-session SQLite chosen over Postgres for local-first storage

Stages important decisions and facts for later reflection.

What's next​