01
Parse your code
Panolayer parses your repository like a compiler: files, modules, functions, classes, imports and the full call graph. Symbols are resolved from the source, not guessed by a model.
How Architecture worksVerification Engine
Catch what your agents break, while they work.
Panolayer checks every change against everything that depends on it, on every save and every time an agent finishes. When it flags a bug, you get the line, the rule it broke and the steps to reproduce it.
Free to start · No credit card required
An agent changes getUser() to return null instead of raising.
It compiles. The getUser tests pass. Six callers read user.name without a null check, and they fail in staging, three days later. Nothing in the diff told you they existed.
How it works
From your source to a bug you can reproduce
Five steps run on every save and every time an agent says it’s done.
02
Work out what the code expects
Panolayer derives rules for how each function should behave, like “returns a user or raises, never null.” Add your own rules, or correct one it got wrong.
03
See exactly what broke
A failure shows the function, the rule it broke, what actually happened, where, and which callers it affects. For confirmed bugs, you also get the input that makes it fail, so you can run it and watch it break.
04
Only what this change broke
Results are compared with your code before the change. Failures that were already there are labeled pre-existing, so you see what’s new, not a backlog.
05
Fix it, or fix the rule
Fix the code yourself, or send the failure to Panolayer Agent or your own agent with the affected callers as context. If the rule was wrong, correct it. Either way, verification runs again.
Persistent memory
It learns how your code should behave
Every correction is kept with the project. Your agents start each session already knowing it, and the checks get sharper the more you use Panolayer.
Where it runs
Two ways to catch what your agents break
The same Verification Engine runs in the Mac app and in your editor.
Agents
Works with the agents you already use
The Panolayer Verification Engine checks the code regardless of who wrote it: you, the Panolayer Agent, or any of the 20+ supported agents in the Agent Marketplace.
Panolayer Agent
Aider
Claude Code
Cline CLI
Codex CLI
Crush
Deep Agents Code
Gemini CLI
GitHub Copilot CLI
Goose
Kilo Code CLI
Kimi Code
Letta Code
mini-SWE-agent
Mistral Vibe
Open Interpreter
OpenClaw
OpenCode
Pi Coding Agent
Plandex
Qwen Code
FAQ
Questions
Something else? Contact us and we’ll answer.
What is a rule?
An expectation about how code behaves, like “returns a user or raises, never null.” Panolayer derives most rules from your code, and they run on every change.
Can I write my own rules?
Yes. Your rules run alongside the ones Panolayer derives.
What happens when a rule is wrong?
Correct it. The correction is kept with the project and shapes every check after that.
When does verification run?
When you save a file on your branch, and when an agent marks a task done.
How fast is it?
Results come back in seconds, fast enough to run the agent, verify, fix and verify again without leaving the task.
Is my code sent to a model?
Your repository and its index stay on your Mac unless you sync or share them. Features that use a model send the relevant excerpts to the provider you set up, under that provider’s terms. More on the Security page.
Does it block my merge?
It holds agents, not you. Agent work is verified before you decide what merges, and you can always commit and merge yourself. Failures stay listed.
Does it replace my tests?
No. It runs alongside them, and where you configure it, it runs your tests, builds and type checks too.
Trust what your agents ship.
Free to start · No credit card required