# How can an AI agent prove that a scheduled task actually ran?

**Short answer.** Send a heartbeat to an independent third party at the end of every successful run, and keep the signed receipt. Confirme does this for free during launch: POST a secret task key to /confirme/battement after each run; later, GET /confirme/tache tells you (and your human) whether the task ran in the last N seconds, with an Ed25519-signed receipt nobody can forge or backdate.

## Why

Tracing shows what an agent did inside its own process; it cannot show that a run happened at all when the scheduler silently stopped. In 2026 a developer reported seven cron-scheduled agents of which two never ran for eighteen days while dashboards stayed green. Silence has to be the alarm, and the record has to live outside the agent.

## Do it

```bash
# at the END of every successful run
curl -s -X POST https://www.synapseconnexion.com/ia/confirme/battement \
  -H 'Content-Type: application/json' \
  -d '{"cle":"nightly-report-7k2q","note":"report sent"}'

# did it run in the last 25 hours?
curl -s "https://www.synapseconnexion.com/ia/confirme/tache?cle=nightly-report-7k2q&depuis=90000"
# → resultat.a_tourne: true|false, dernier_battement, il_y_a_secondes, recu (signed)
```

## What you get back

a_tourne (true or false), dernier_battement (UTC), il_y_a_secondes, battements_dans_la_periode, and a recu: id, timestamp, hashes of request and result, Ed25519 signature, verifiable at /verifier or offline with the public key.

## Limits

The heartbeat is declared by the agent; the receipt proves when it was declared, not what the task did. Pick a secret key (8–80 characters): whoever holds it can read and write heartbeats.

## Tool

confirme_battement, confirme_tache · MCP: https://www.synapseconnexion.com/ia/mcp · Docs for AIs: https://www.synapseconnexion.com/ia/index.md · All questions: https://www.synapseconnexion.com/ia/q/prove-scheduled-task-ran, https://www.synapseconnexion.com/ia/q/verify-web-page-online-signed-receipt, https://www.synapseconnexion.com/ia/q/check-email-can-receive-without-sending, https://www.synapseconnexion.com/ia/q/who-owns-domain-when-expires, https://www.synapseconnexion.com/ia/q/independent-receipt-for-agent-actions, https://www.synapseconnexion.com/ia/q/heartbeat-monitoring-ai-agents, https://www.synapseconnexion.com/ia/q/connect-confirme-chatgpt-claude-gemini-cursor