Works with any coding agent
Your agent writes it.
Plumb proves it works.
Plumb tests every change your coding agent makes, sends failures back for a fix, and only lets passing code reach main.
Free for solo projects · Two-minute setup
Plugs into the stack you already ship with
01 — How it works
From prompt to merge, untouched by hand.
Plumb sits between your agent and your main branch. You keep prompting. It keeps checking.
01
Connect your repo
Install the Plumb app on GitHub or GitLab and point it at your agent. Two minutes, no config file.
02
Plumb watches every change
Each edit your agent makes triggers the tests it touches, not your whole suite.
03
Only green code merges
Failures go straight back to the agent with the exact error. You review code that already works.
02 — Features
Built for code you didn’t type yourself.
Agents write fast and confidently. Plumb makes sure confident is also correct.
Runs only the tests that matter
Plumb maps each change to the tests it can break, so a one-line fix takes seconds to check, not a full CI run.
✓ login.test.ts
✓ session.test.ts
✓ rate-limit.test.ts
– 45 unrelated suites skipped · 2.1s
A merge gate that holds
Red code can’t reach main, even when the agent opens the pull request itself.
Works with any agent
Terminal agents, IDE agents and cloud agents. If it commits to git, Plumb can check it.
Failures your agent can act on
Every failure comes back with the expected value, the actual value and the line that broke. Your agent fixes it on the next pass.
✕ expected 5 attempts, got 6
at src/api/login.ts:42
→ sent to agent with a suggested fix
“We let the agent ship on Fridays now. Plumb catches the silly stuff before I ever open the PR.”
Dana Whitlock
CTO, Lumen Labs
03 — Pricing
Pay for checks, not seats you don’t use.
Start free. Upgrade when your agent starts shipping more than you can review.
Solo
$0
forever
For side projects and first agents.
1 repository
500 checks a month
Merge gate
Community support
Pro
Most popular
$19
per dev / month
For founders shipping with agents daily.
Unlimited repositories
10,000 checks a month
Failure reports for agents
Slack alerts
Team
$49
per dev / month
For teams with more than one agent.
Everything in Pro
SSO and audit log
Custom test rules
Priority support
04 — FAQ
Questions, answered.
Still deciding? Start on the free plan and run Plumb on your own repo before you pay.
Which coding agents does Plumb work with?
Any agent that commits to git or opens pull requests: terminal agents, IDE agents and cloud agents. Plumb watches the repo, not the agent, so you can switch agents any time.
Do I need to write new tests?
What happens when a test fails?
Is my code stored anywhere?
Can I still merge by hand?
Stop reviewing code that doesn’t run.
Connect a repo in two minutes. Your agent’s next change gets checked before you see it.