The tool is free. The cloud is optional.
Coval's core tools are free forever, no account. Hosted tiers add cloud sync, trends and team features when you want them.
Developer tools
The full engine, free. This is the whole product — no sign-up required.
Open Coval- CLI — coval scan, with CI gating
- MCP server — Claude Code, Cursor, Codex
- VS Code extension — full editor surface
- Every analysis: hallucinations, dupes, dead code, drift
- Health grade & trend history
- Free forever · no account required
Hosted — Free
Sync your reports to the cloud and pick up where you left off.
Join the waitlist- Everything in the developer tools, plus —
- Cloud-synced reports & history
- Access from anywhere, any machine
- Account-based, usage-capped
Hosted — Paid
Lifts the caps and adds the premium layer for teams and big repos.
Get notified- Everything in Hosted Free, plus —
- Private reports
- Trends & analytics over time
- Larger repositories
- Team plans & seats
Hosted tiers are planned — the developer tools are available today. Final hosted pricing TBA.
Questions
Do I need an account to use Coval?+
No. The developer tools — CLI, MCP server and VS Code extension — are free forever with no account. An account is only needed for the hosted tiers, which add cloud sync.
Does my code leave my computer?+
Only if you choose. The tools send no telemetry, and your code is uploaded only when you opt in to cloud sync on a hosted tier.
Which languages are supported?+
JavaScript and TypeScript (including JSX/TSX) have full support. Python, Go, Rust and Java have experimental structure & architecture insights — some checks, like hallucination detection, are JS/TS-only for now.
Can I use Coval in CI?+
Yes. The CLI emits the same report your editor shows and drops into CI to gate on serious findings — like hallucinated APIs — before AI-assisted changes merge.
Which AI tools does it plug into?+
Coval's MCP server connects to Claude Code, Cursor and Codex so your agent works against grounded context. There's also a Claude-powered embedded agent that can preview and apply fixes.
What does it run on?+
macOS, Linux and Windows (x64 / arm64) on Node ≥ 20. The CLI and MCP server run via npx with no native build step on your machine.