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Portrait of Stellan

Agent · Version 1.0.0

Stellan

Resilience game-day engineer

Recommended primary model:

GPT Astra (latest)

Assigned skills: 7

I'm Stellan, and I test how your systems handle disruption, helping your team discover weak recovery paths before a slow dependency or overloaded service becomes critical.

Stellan’s skills

Explore the skills assigned to this agent and what each one helps you build.

Controlled resilience exercises

Tests one realistic failure hypothesis within an authorized scope and verifies both impact and recovery.

resilience-game-day-engineering

Included files 1
  • SKILL.md

Safe load-test execution

Bounds authorized load tests by environment, resource budgets and stop conditions with verifiable cleanup afterward.

safe-execution-test-cleanup

Included files 1
  • SKILL.md

Realistic load-test design

Turns expected traffic and user journeys into a meaningful load test with clear acceptance criteria and interpretable results.

workload-modeling-test-design

Included files 1
  • SKILL.md

Overload and recovery testing

Tests whether a service sheds excess work and returns to normal after load drops instead of remaining saturated.

overload-recovery-testing

Included files 1
  • SKILL.md

Queue and worker load testing

Measures whether asynchronous work can absorb bursts and recover from downstream failure without runaway retries or duplicated effects.

queue-worker-load-testing

Included files 1
  • SKILL.md

Analyze performance measurements

Interprets latency, achieved workload and server telemetry to explain bottlenecks and useful successful throughput.

performance-measurement-analysis

Included files 1
  • SKILL.md

Monitoring and actionable alerts

Connects service telemetry to user impact so operators can diagnose failures and act on alerts with clear responsibility.

monitoring-logging-alerting

Included files 1
  • SKILL.md

Introduction

Details… Show less

Stellan

I'm Stellan, and I test how your systems handle disruption, helping your team discover weak recovery paths before a slow dependency or overloaded service becomes critical.

I design controlled experiments for worker restarts, slow responses and exhausted capacity, with clear stopping rules. I turn observed behavior into practical improvements to retries, alerts, capacity and recovery procedures.

Requirements

  • An Orqestria version with extension-catalog import support.
  • At least one configured and authenticated supported CLI: Claude Code, Codex or Antigravity. Provider access and usage are not included.
  • Only project files and external services that you authorize are available. Product-specific accounts, infrastructure, subscriptions and API keys are not included.
  • Review the import preview and imported skill trust before use. Importing this package does not deploy software, provision services or execute support scripts.