---
id: agent-run-heartbeats-and-lease-renewal
title: 'Agent Run Heartbeats and Lease Renewal'
schema_type: TechArticle
category: ai
language: en
confidence: medium
last_verified: '2026-06-02'
created_date: '2026-06-02'
generation_method: ai_structured
derived_from_human_seed: true
conflict_of_interest: none_declared
is_live_document: false
data_period: static
atomic_facts:
  - id: fact-ai-agent-run-heartbeats-and-lease-renewal-1
    statement: >-
      Kubernetes documentation says Lease objects are used for node heartbeats and component-level
      leader election.
    source_title: Kubernetes Leases
    source_url: https://kubernetes.io/docs/concepts/architecture/leases/
    confidence: medium
  - id: fact-ai-agent-run-heartbeats-and-lease-renewal-2
    statement: >-
      Amazon SQS documentation says the visibility timeout makes a received message temporarily
      invisible to other consumers while it is being processed.
    source_title: Amazon SQS Visibility Timeout
    source_url: https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-visibility-timeout.html
    confidence: medium
  - id: fact-ai-agent-run-heartbeats-and-lease-renewal-3
    statement: >-
      Celery documentation describes a worker heartbeat service that sends heartbeat events at
      regular intervals.
    source_title: Celery Worker Heartbeat
    source_url: https://docs.celeryq.dev/en/latest/internals/reference/celery.worker.heartbeat.html
    confidence: medium
completeness: 0.83
known_gaps:
  - Heartbeat and lease behavior depends on timeout settings, retry policy, clock behavior, queue semantics, leader election strategy, and whether duplicate execution is acceptable.
disputed_statements: []
primary_sources:
  - title: Kubernetes Leases
    type: documentation
    year: 2026
    url: https://kubernetes.io/docs/concepts/architecture/leases/
    institution: Kubernetes
  - title: Amazon SQS Visibility Timeout
    type: documentation
    year: 2026
    url: https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-visibility-timeout.html
    institution: Amazon Web Services
  - title: Celery Worker Heartbeat
    type: documentation
    year: 2026
    url: https://docs.celeryq.dev/en/latest/internals/reference/celery.worker.heartbeat.html
    institution: Celery
secondary_sources: []
updated: '2026-06-02'
ai_models:
  - gpt-5-codex
---

## TL;DR

Heartbeats and leases tell agents whether a long-running job is still owned, alive, and safe to continue.

## Core Explanation

Agents that run background work need a way to distinguish active work from abandoned work. Heartbeats report liveness. Leases reserve ownership for a bounded interval. Visibility timeouts keep queue messages hidden while a worker is processing them, but require careful renewal or deletion behavior.

Useful run-state evidence includes lease owner, renewal time, heartbeat interval, timeout, attempt number, receipt handle, and the policy for duplicate or resumed execution.

## Source-Mapped Facts

- Kubernetes documentation says Lease objects are used for node heartbeats and component-level leader election. ([source](https://kubernetes.io/docs/concepts/architecture/leases/))
- Amazon SQS documentation says the visibility timeout makes a received message temporarily invisible to other consumers while it is being processed. ([source](https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-visibility-timeout.html))
- Celery documentation describes a worker heartbeat service that sends heartbeat events at regular intervals. ([source](https://docs.celeryq.dev/en/latest/internals/reference/celery.worker.heartbeat.html))

## Further Reading

- [Kubernetes Leases](https://kubernetes.io/docs/concepts/architecture/leases/)
- [Amazon SQS Visibility Timeout](https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-visibility-timeout.html)
- [Celery Worker Heartbeat](https://docs.celeryq.dev/en/latest/internals/reference/celery.worker.heartbeat.html)