The virtual tech lead
your project deserves.
Full knowledge graph. PR review. Health grades. MCP integration. Free for every verified open-source project. Forever.
The Crisis
These projects didn't reject AI.
They rejected unsupervised AI.
curl
2024Shut down AI bug bounties
AI-generated vulnerability reports were wasting maintainer time with hallucinated CVEs.
Ghostty
2025Banned AI-generated PRs
Contributors submitting AI-generated code that broke builds and ignored project conventions.
tldraw
2025Auto-closes all bot PRs
Flood of low-quality PRs that passed linting but violated architectural patterns.
Godot
2025Restricted external contributions
Maintainers spending more time reviewing AI slop than writing code.
“AI co-authored code contains 1.7× more major issues, 75% more misconfigurations, and 2.74× higher security vulnerabilities.”Analysis of 470 open-source GitHub PRs
How unerr helps
The architectural immune system
your project has been missing.
Real maintainer pain. Engineered solutions.
The Pain
“We spend more time reviewing AI PRs than writing code.”
The Fix
PR review checks every change against the knowledge graph. Blast radius, rule violations, and downstream impact — flagged before you even see the PR.
The Pain
“Contributors ignore our architecture and conventions.”
The Fix
Architectural rules are auto-detected from your commit history and enforced on every contribution. AI agents read them via MCP before writing a single line.
The Pain
“We can't tell if a PR was AI-generated or just bad.”
The Fix
The prompt ledger traces every AI decision. Full chain: what the agent was told, what it changed, and why. Rewind to any point.
The Pain
“Our docs are stale and AI agents hallucinate from them.”
The Fix
Knowledge sync validates docs against live code. Stale references are flagged automatically. AI agents get verified context, not outdated wikis.
What you get
Full Pro. No catch.
Everything paid teams get. Zero cost for open source.
Knowledge Graph
50K+ entities indexed per repo. Every file, function, class, and relationship — mapped.
Health Audit
13-type risk analysis with letter grades. Dead code, coupling, drift — all detected.
PR Review
Blast radius on every pull request. Downstream impact flagged before merge.
Rules Engine
Architectural rules auto-detected from commit history and enforced on every change.
Prompt Ledger
Every AI decision recorded. Full chain of what changed and why. Rewind to any point.
MCP Server
AI agents read your graph in real-time. Any MCP client. Full context at localhost:9315.
Knowledge Sync
Docs validated against live code. Stale references flagged automatically.
Unlimited
No seat limits. No repo caps. Every contributor gets full access. Forever.
How to qualify
Public GitHub repository. That's it.
No application form. No star count. No corporate check.
Viral distribution
Your project's permanent reputation.
Add a live health badge to your README. Auto-updates on every push. Every README view is an impression — clicking it opens your public health dashboard.
[](https://unerr.dev/audit/your-org/your-repo)Try it now
Run a free health audit
No signup required. Enter any public GitHub repo and get a full 13-type health report in under 60 seconds.
13 risk types · Full health report · Under 60 seconds
Your project deserves an
architectural immune system.
Protect it — for free, forever.
Public GitHub repo · No credit card · Setup in 60 seconds