Convex Sentinel

Sentinel is the way to get production error visibility without shipping your error data to a third-party service. You install the component, wire up the client SDK with a React error boundary and window error handlers, and errors from server functions and browser crashes land in a table in your own Convex deployment. Redaction happens at write time and is on by default, blocking secret-looking keys and value patterns before anything is stored, which matters because the agent reading those rows will pass them to a model provider. You can query recent errors with the Convex CLI or react to new ones through the monitor's prod_error event. The optional triage cron classifies recurring, non-transient errors and can hand them off to ai-runner to open a fix PR, which is ambitious but worth trying only once you trust the classifier. Capturing production errors needs a deployed cloud app, though installing works anonymously.

skills.sh installs: 40.9K
GitHub stars: 69
last updated: Oct 26, 2026

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Install

$ npx -y skills add convex/agent-skills --skill convex-sentinel --agent claude-code

Installs into .claude/skills of the current project.

Files

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

Install the component: app.use(sentinel) in convex/convex.config.ts.
Wire the client SDK: a React error boundary plus window.onerror/unhandledrejection and breadcrumbs.
Redaction runs at write time and is on by default (default-deny on secret key names and value patterns).
Read recent errors with the Convex CLI (convex data, run-once-query); react to new ones via the monitor's prod_error event.
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.