Convex Sentinel

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Capture production errors in your own deployment

Install @convex-dev/sentinel to capture production errors (server function failures, client JS/React crashes, OCC and scale signals) into a table in the user's OWN deployment, redacted at write time, then react to new ones. Data never leaves the user's deployment.

Workflow

1. Install the component: app.use(sentinel) in convex/convex.config.ts.
2. Wire the client SDK: a React error boundary plus window.onerror/unhandledrejection and breadcrumbs.
3. Redaction runs at write time and is on by default (default-deny on secret key names and value patterns).
4. Read recent errors with the Convex CLI (convex data, run-once-query); react to new ones via the monitor's prod_error event.
5. Optionally enable the self-healing cron: triage classifies each error and, for recurring non-transient ones, hands it to ai-runner to open a fix PR.

Rules

• Redaction is mandatory and on by default — never store raw secrets; the agent's reads reach the model provider.
• Data stays in the user's deployment; never send it to a third party.
• Sample and cap to control volume and cost.
• Capturing PROD errors needs a deployed cloud app; install works anonymously.