Get pinged when your AI calls fail, stall, or start burning money.
Vergilant is a smoke detector for production LLM calls. Sixty seconds to set up. Then it stays out of the way. That’s the point.
The free tier has all three alert types. No card required.
14:03 · the setup
One URL change. That’s the integration.
- Swap the base URL and add one header.
- Anthropic and OpenAI, streaming included.
- Responses come back untouched. Your API key passes through, never stored.
from anthropic import Anthropic client = Anthropic( base_url="https://api.anthropic.com",+ base_url="https://proxy.vergilant.dev/anthropic",+ default_headers={"X-Monitor-Key": "lm_…"},) # Done. Every call is now watched.14:05 · watching
Alerting isn’t a feature here. It’s the whole product.
No dashboards to build, no evals to configure. Two tripwires armed at signup, a third whenever you want it.
Two armed at signup, one opt-in
error_ratearmedPast 10% failures in 15 minutes. The ping says why: “mostly 429 rate_limit.”cost_spikearmed5× your 7-day baseline, learned automatically. No budgets to guess, no thresholds to tune.silenceopt-inFor when traffic just stops. No error log will ever show it.
Meanwhile, in myapp-prod
nothing to report
Your agent is stuck in a loop.
Spend is 5.2× your baseline and climbing.
Caught four minutes in, with zero config. No budgets to guess: Vergilant learned this project’s baseline on its own.
Sixty seconds to set up. Free tier included. No card required.
14:11:04 · resolved
Total damage: $1.84.
Sixty seconds of setup, paid for itself in four minutes. Back to work.
We store the envelope, never the letter.
There is no code path that writes a request or response body anywhere. The proxy is open source, so you don’t have to take our word for it.
What we see
- Model name claude-sonnet-5
- Latency total & time-to-first-token
- Token counts input / output
- Estimated cost
- Status codes 200 · 429 · 500
What we never see
- Your prompts
- Model responses
- Your users’ data
Never stored, never logged. Verifiable in the open-source proxy.
Free to start. A non-decision to keep.
Priced per project, not per seat. One caught loop pays for years.
Free
$0
The full experience, at hobby scale.
- 1 project
- 5,000 requests / month
- All three alert types
- Discord & email alerts
- 7-day metadata retention
Pro
$19.99 / month
- Up to 10 projects
- No request caps
- 90-day retention
- Monthly cost reports
- Multiple alert channels per project
- Spend budgets
Hit the free cap? That usually means real traffic. Upgrading is one click, and nothing about your setup changes.
Back to quiet. That’s the whole product.