New session.
Same old mistake.

Belay brings your coding sessions together locally. Find old mistakes, have your agent fix the causes, and check every new session to see if the fixes hold.

First 1,000 get in. 138 people on the waitlist so far.

One failure, across a week of sessions

typecheck · orbital-api

Before the fix, every session ended the same way. The agent said done. The typecheck said otherwise. You found out in review.

After the fix, the check runs before the agent is allowed to finish. Belay watches every new session and keeps the count.

Built for the agents you already use.

Claude Code Cursor Codex More on the way.

Install once.
Start with the sessions you already have.

Your history,
in one place.

Belay finds the coding sessions saved on your machine and loads them into a local timeline. You don't need to start a new run to find something useful.

Loading your session history
Claude Code
Cursor
Codex
~/.belay/timeline.html

Your sessions. On your machine.

Existing history loaded. New sessions added as you work.

Find what kept
going wrong.

Belay flags loops, stalls, and failed commands across your history. Open a session to see the work that went nowhere, and where you had to step in.

Billing webhooks Session timeline
Edited six files across the API packages/api/src/billing/*
Ran the unit tests. All passed. pnpm test billing → 48 passed
Marked the task complete. Never ran the typecheck. pnpm typecheck → 14 errors, left behind
You stepped in. "the build is red again"
Third session this week to end this way. Now your agent can see that.

Have your agent
fix the cause.

Ask your agent to look at the failed sessions. It reads Belay's evidence through MCP and proposes a real fix: a hook, a rule, a project instruction. You review it before anything changes.

Your coding agent Connected to Belay
Why do my sessions keep ending with a broken build?

Three times this week I marked work done without running the typecheck. Nothing in this project stops me. I can add a hook that runs it before I'm allowed to finish.

.claude/settings.json
+ "Stop": [{ "hooks": [{ "type": "command",
+   "command": "pnpm typecheck" }] }]
Try it

Every new session
puts the fix to the test.

Keep working as usual. Belay adds new sessions, checks whether the old failure returns, and flags new ones. Ask your agent whether the fix held and you get a count.

Typecheck before done
0

sessions ended with a red build
in the 30 days since the fix

New session checked
New session checked
New session checked

It all stays
on your machine.

Belay uploads nothing. Your session history, timeline, and fix tracking stay on your disk. No account. No Belay cloud.

Local collection. Local storage.

Belay reads the session files already on your machine and keeps its records there. It works offline.

Your agent stays your agent.

Belay has no model. When you ask your agent to diagnose an issue, the evidence it reads may go to its existing model provider, just like your other coding requests.

Your work keeps moving.

Belay never blocks an agent action. If Belay stops, your agent keeps going.

Belay for Teams · Enterprise

Coming soon.

One Belay across every machine at your company.

  • Fleet-wide patterns
  • One fix for everyone
  • Local-first, like solo

Make the next run
a little wiser.

Less going in circles. More getting somewhere.

First 1,000 get in. 138 people on the waitlist so far.

Docs

This page is being written.

Questions? Use Help and we'll get right back to you.