Quick Start

Install a plugin and try it in under a minute.

/plugin marketplace add harnessprotocol/harness-kit

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

/plugin install explain@harness-kit

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

No configuration needed

All plugins work out of the box. Install and invoke — that's it.

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

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

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

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

/plugin install orient@harness-kit
/orient authentication

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

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

Stages important decisions and facts for later reflection.