YouMonitMonitor your AI agents — production-grade uptime, latency & quality.
Your GPT wrapper, LangChain pipeline or custom LLM endpoint isn't "just an API" — it can be up and healthy while quietly returning nonsense. YouMonit sends a synthetic prompt every N seconds, checks the reply matches what you expect, and pages you when anything drifts.
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The four ways an AI agent silently fails — all covered
Endpoint being reachable isn't "working". Here's what we actually catch.
Model drifted — replies stopped making sense
Configure a smoke-test prompt with a known-good expected substring (e.g. reply must contain "OK" or match a JSON schema). Alert the second the shape breaks.
Cost blowout
We parse <code>usage.total_tokens</code> from OpenAI/Anthropic-shaped responses on every check and chart it. Notice creeping token growth before the invoice does.
p95 latency creep
Set a "max latency" threshold. If the agent responds correctly but slower than your SLA, it goes <strong>degraded</strong> (not down) — you know before customers do.
Provider rate-limits
HTTP 429 / 503 from the upstream provider fires immediately, so a burst of user traffic hitting rate caps doesn't look like an outage to your logs.
API key rotation misses
A revoked or expired key returns 401. First failure alerts you before the second customer complaint.
JSON schema enforcement
For agents that must return structured output, JSON-path assertions verify the exact key exists with the exact value. Catch schema drift on the first drift.
Set up in 60 seconds
Point at your agent endpoint
Any URL that speaks HTTP: OpenAI, Anthropic, self-hosted, or your custom wrapper.
Paste a test prompt
Whatever body your agent expects. We send it verbatim; headers include your bearer token.
Pick an assertion
Substring, regex, JSON path or length range. If the reply drifts, we alert on the very next check.
Alerts anywhere your team lives
Route per monitor, per severity — production pages the on-call rota, marketing sites drop into a Slack channel.
Stop guessing whether your AI is still working.
Free plan monitors 10 agents. Alerts in 13 channels. Ship your first smoke test today.
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