Open source · npmGive Ivan a sentence. Get a pull request.
Ivan is an open-source AI engineering teammate. It breaks your request into PR-sized tasks, writes the code, reviews its own work with a principal-engineer persona, opens the PR — and handles the review comments too.
Runs locally with your keys · Built on Claude Code · MIT-licensed
From one sentence to a reviewed PR.
Break it down
Ivan splits your request into PR-sized tasks, each scoped to land cleanly on its own.
Branch & implement
It branches and writes the code on top of Claude Code, with conventional commits as it goes.
Open the PR
A detailed description and context-specific review notes — handed off ready for a human.
Address the comments
Ivan reads inline review feedback and failing CI, pushes fixes, and replies with the commit.
An AI that argues with itself — so you don’t have to.
Ivan splits into two minds. An Implementer writes the code; a separate Architect — a principal-engineer persona on Claude Opus — critiques the design, then the diff, for as many rounds as the work demands.
- The Architect is read-only — it inspects the code to ground its critique but never edits it.
- Rounds are dynamic: simple changes finish in one, hard ones get as many as they need.
- Every turn ends in a verdict — APPROVE, APPROVE_WITH_NITS, or REVISE.
It learns your team.
Ivan doesn’t start every task from zero. It distills your merged PRs and coding sessions into durable lessons, then injects them into every future task — so the more you ship, the smarter it gets.
Learns from your PRs
Distills review comments from merged pull requests into reusable engineering lessons and repo conventions.
Mines your sessions
Reads your local Claude Code transcripts to capture how your team actually reasons about quality.
Committable & local
Lessons live as JSONL in your repo. Semantic retrieval runs locally — queries never hit the network.
A teammate, not an autocomplete.
Ships PRs from a sentence
Plan, branch, implement, and open the pull request — from a single line of intent.
Reviews its own work
Expert mode pairs an implementer with a principal-engineer architect before any line reaches your PR.
Institutional memory
Your team’s hard-won lessons get injected into every task. The more you ship, the smarter it gets.
Handles review comments
`ivan address` resolves inline feedback and failing checks, replying with the fixing commit.
Trigger from an issue
Comment `@ivan-agent /build` on a GitHub issue and Ivan turns it into a PR, hands-off.
Runs on your terms
Local, with your credentials. Anthropic API or a Claude Max subscription via the CLI driver.
Hand Ivan your backlog.
Open source, free to run, and shipping PRs in minutes.