Building a connector is easy. Keeping it alive is the job.
Sanghyun Bridge keeps your integrations working. When a vendor ships a breaking change and the sync starts failing, our agents read the failure and the changelog, patch the connector, replay it against a sandbox, and put a reviewed fix in front of your engineer. Usually before anyone files a ticket.
Private beta. Founded June 2025 · Pre-seed closed January 2026.
We watch the sync itself, not a status page. A silent schema drift that corrupts rows is caught the same way a hard failure is.
The agent writes the actual patch against the changed API, then proves it by replaying real failed payloads through a sandbox.
A human approves every change that reaches production. The agent does the work, your engineer keeps the final say.
Nobody wants to staff integration maintenance
Every B2B company ends up owning connectors it never meant to own. Building each one took a week. Keeping two hundred of them alive is permanent headcount nobody budgeted for.
- Upstreams drift constantly. A field is deprecated, an enum gains a value, a date format changes, auth rotates. None of it is announced in a way your pipeline notices.
- Failures are quiet. The worst breakages do not throw. They return a valid-looking response that is subtly wrong, and you find out from a customer three weeks later.
- The fix is boring and urgent. It is twenty minutes of work that has to happen today, which is exactly the shape of task that destroys an engineering week.
- It never ends. Unlike a feature, this work has no completion state. The backlog regenerates itself every time a vendor ships.
Five steps, and a person at the end of them
The agent does the investigation and the writing. The decision to ship stays with your team, and every run leaves a trail you can read.
Detect
We monitor the sync, not the vendor's uptime page. Failed payloads are isolated, grouped by cause, and separated from ordinary transient errors so a retry storm does not look like a breakage.
Diagnose
The agent reads the actual failures alongside the vendor's changelog, release notes and current schema, and works out what changed rather than guessing from the error string.
Patch
It rewrites the connector against the new contract: field mappings, type coercions, pagination, auth. The output is a readable diff, not an opaque configuration change.
Test
The patch is proved by replaying the real failed payloads through a sandbox, plus the connector's existing suite. A fix that cannot be demonstrated does not get proposed.
Ship
Your engineer gets a pull request with the diff, the evidence and the reasoning. Approve it and the sync resumes. Nothing reaches production unreviewed.
Or stop
When the change is genuinely ambiguous, or the blast radius is wrong, the agent pauses the sync and tells you precisely what broke instead of improvising a fix.
An agent writing production code needs limits
We are asking you to let software patch the pipe between your systems. That only works if the boundaries are explicit and you can audit every one of them.
Human approval, always
No patch merges without a person. Auto-merge is not a setting we offer, because the failure mode is silent data corruption at scale.
Proof, not confidence
A proposed fix ships with the failed payloads it now handles. If the agent cannot demonstrate the repair, it escalates instead.
Pause beats guess
Halting a sync is recoverable. Writing wrong rows into your warehouse for a week is not. We default to the recoverable failure.
Readable by your team
Connectors are ordinary code in your repository. If you leave us, you keep working integrations rather than an export file.
Where we are focused first
We are deliberately narrow in private beta. Depth on the integrations that break often and hurt when they do, rather than a catalogue of hundreds that are shallow everywhere.
Commerce & payments
Order, refund and settlement flows, where a silent mapping error becomes a reconciliation problem rather than an error log.
CRM & billing
Customer, subscription and invoice records moving between systems that each believe they are the source of truth.
Logistics & fulfilment
Carrier and warehouse APIs, which change on their own schedule and rarely announce it anywhere you are watching.
Internal warehouses
The pipelines feeding analytics, where wrong data is worse than missing data because nobody questions a chart that still renders.
This became buildable recently
Agents can read and write real code
Diagnosing a breaking change from logs, docs and a diff, then writing a correct patch, stopped being a research demo and became something you can run on a schedule.
Verification closes the loop
Replaying the exact payloads that failed turns a plausible patch into a demonstrated one. That is what makes letting an agent touch the pipe defensible.
The cost curve finally works
Watching hundreds of connectors and investigating every anomaly would have been uneconomic two years ago. Now the agent costs less than the engineer's interrupted afternoon.
Built by people who got tired of this specific chore
Founder · Chief Executive Officer & Chief Technology Officer
Sanghyun Park
Sanghyun Park founded Sanghyun Bridge in June 2025 and holds both the chief executive and chief technology roles, which at this size describes the work rather than decorating it. Sanghyun sets the product direction, owns the agent architecture, and personally handles design partner engineering.
The company came out of a familiar annoyance. Integrations are treated as a one-off build and funded as one, then quietly consume engineering attention forever. The interesting part was never writing the connector. It was noticing the breakage, working out what the vendor changed, and proving the fix, and that is now work a well-constrained agent can genuinely do.
Sanghyun is based in Seoul and is the right person to contact about the beta, the architecture, or partnerships.
Funding and milestones
| When | What |
|---|---|
| June 2025 | Company founded in Seoul, Republic of Korea. |
| October 2025 | First self-repairing connector running continuously against a live upstream. |
| January 2026 | Pre-seed round closed, led by Dodam Ventures, a Seoul-based early-stage fund. |
| Today | Private beta with a small group of design partners. Hiring in Seoul. |
We do not publish round size, revenue or customer names while in private beta.
Tell us what keeps breaking
We are taking a small number of design partners. Bring one integration that fails regularly and we will work on that one first.