$1 Monitoring Budget: Price 60 AI Probes First

01 / Give monitoring a $1 target before scheduling requests

A health check should help you notice trouble without becoming another expensive workload. Start with a $1 monthly monitoring target and two small generation probes per day. Over a 30-day month, that means 60 requests. This is a planning example, not a claim that every model or request configuration will fit that budget.

Keep half the dollar available for troubleshooting. Your scheduled probes then have a $0.50 allowance, or about $0.0083 each. Measure their actual charges before enabling a schedule. If they cost more, reduce frequency or choose a cheaper suitable model.

CheapRelay fits this approach because billing is pay-as-you-go, with no monthly fee or subscription. However, requests still incur charges for real tokens, including applicable cache reads and writes. A tiny prompt does not make a probe free.

02 / Separate HTTP reachability from successful generation

Use two checks because they answer different questions. A lightweight HTTP check asks whether you can reach a specific route. A generation check asks whether authentication, routing, and one selected model can complete a request.

• ■ Reachability check: run every five minutes against a documented, lightweight route available to your account.
• ■ Generation check: run twice daily with a short, fixed prompt and a small supported output limit.

Five-minute polling produces 288 checks daily, or 8,640 over 30 days. Verify whether your chosen route has any charge or rate limit before using that frequency. Do not assume that the API root or a route named health exists.

A successful HTTP response does not establish that generation works. Likewise, one successful generation request covers only its selected model and route, not every service behind the endpoint.

03 / Make one generation request work in your terminal

Use an existing computer with curl installed. For CheapRelay, the API base is https://api.cheapapirelay.com, with OpenAI-compatible routes under /v1. Begin with the same request format your application already uses successfully.

Save that request body locally as probe.json. Remove customer data and replace the prompt with: Reply with OK. Keep the exact API model identifier from your working configuration. Set a small output limit using the parameter that model supports; eight output tokens is a starting experiment, not a universal setting.

Place your API key in an environment variable named AI_API_KEY through your shell's secure input mechanism or your scheduler's secret settings. Keep it out of probe.json and logs.

Run this command from the directory containing probe.json:

curl --silent --show-error --connect-timeout 5 --max-time 20 --output probe-response.json --write-out 'status=%{http_code} total_seconds=%{time_total}\n' --header "Authorization: Bearer $AI_API_KEY" --header 'Content-Type: application/json' --data-binary @probe.json https://api.cheapapirelay.com/v1/chat/completions

The five-second connection timeout and 20-second total timeout are starter thresholds you choose, not promised response times. Adjust them to your application's needs. If the request fails, resolve that before scheduling it.

04 / Check the response before calling the endpoint healthy

Inspect the saved response. Require an HTTP success status, valid JSON, and the expected nonempty answer field for your request format. A blank answer, an error object, or an HTML page should fail the generation check.

Record the timestamp, status, elapsed time, validation result, and reported token usage. Track actual charges from billing records separately. Avoid saving full responses indefinitely, and never log authorization headers.

Treat authentication failures as a key or permission problem. Investigate rate or quota limits when you receive 429. Server errors and timeouts need investigation, but do not identify the failing component by themselves.

05 / Schedule 60 probes and review the first receipt

Use your existing operating system scheduler to run the validated check twice daily. Your computer must remain awake and connected. If it cannot, move the same check to infrastructure you already operate and account for any additional hosting cost.

Send an alert through a notification channel you already use. Suppress repeated alerts for an unchanged failure, then send a recovery notice when checks pass again. Keep automatic retries disabled initially because another generation attempt can create another charge.

After several runs, divide their total charge by the number of probes and multiply by 60. Compare that estimate with your $0.50 scheduled allowance. Sign up for CheapRelay when you are ready to test this setup, then use your first billing records to decide whether the frequency fits your budget.