02
◇ Context Engine
The brain of your agent
Every event across your org — Slack, HubSpot, Stripe, Jira — streams in. The engine ranks and prunes it into token-efficient context, wired straight into the harness.
Open source · MIT licensed
The brain
of your agent.
Every event across your org — Stripe, Slack, GitHub, Jira, LiveAgent, HubSpot, your site — streams into the Context Engine. It ranks, prunes, and caches so every agent call carries only what matters.
Open source
Built in the open.
MIT licensed, end to end.
harnext and Context Engine are free and open source. Read the code, open an issue, or ship a change — the whole harness was built to be forked.
QualityUnit / harnext Star
The coding agent harness — tools, providers, sandbox, and a runner that ships work unattended.
QualityUnit / context-engine Star
Token-efficient context for any harness — continuous indexing, ranking, and caching over a small HTTP + MCP surface.
Book a callPrefer a walkthrough? We'll show you harnext + Context Engine on your stack.
02 — The context engine · context-engine
Every event in your org,
turned into token-efficient context.
Stripe events, Slack messages, GitHub activity, Jira and LiveAgent tickets, website data — everything that happens across your organization streams into the Context Engine. When an agent asks, it ranks, prunes, dedupes, and caches so every call carries only what matters. Drop it into harnext, Claude Code, Codex, or your own loop.
Events processed
4,796 events indexed · last 14 days
7d14d
14d ago7dtoday
Tokens / query
14.2k · −89%
Context builds
334
Sources · status
10 live
S#general▸ slack channel
412
events indexed
2h agolast sync
Live⚡ synced 2h ago
⎇qualityunit/urlslab▸ git repository
358
events indexed
2h agolast sync
Live⚡ synced 2h ago
◆#bug-report▸ discord channel
2,738
events indexed
2h agolast sync
Live⚡ synced 2h ago
−89%
fewer tokens per query, on average — without the agent losing the thread.
Measured against passing the raw working set. Your mileage varies with repo size and query.
Continuous indexSources stream events into the grid — no manual re-indexing. Whatever your agent queries is always current.
Relevance rankingScores and orders candidates per query, then prunes the long tail before it ever reaches the model.
Dedup & cacheCollapses repeats and caches hot context, so repeat calls don't re-pay for the same tokens.
Drop-in for any harnessA small HTTP + MCP surface. Point harnext, Claude Code, Codex, or your own loop at it.
Plugs into the harness you already use →harnext
Claude Code
Codex
pi.dev
Claude CodeCodexpi.dev