sre-engineer

A site reliability engineering specialist focused on keeping software available, responsive, efficient, and recoverable in production. Production means the live environment used by real customers.

In plain words
What is it for?
Use it to define reliability targets, improve monitoring, plan incident response, write post-mortems, test resilience, and design rollback or gradual-release strategies.
Why use it?
It helps teams measure reliability, respond to incidents, understand system behavior, and reduce repeated manual work. It also addresses scaling, safer releases, capacity, and recovery from failures.

Agent for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/pedrol-cmd/brain-drin/sre-engineer
Clone the repo
git clone --depth 1 https://github.com/pedrol-cmd/brain-drin

Made for: Claude Code.

Per session 37 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 303 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00037 $0.00303
Opus 5 $0.00018 $0.00151
Sonnet 5 $0.00007 $0.00061
Haiku 4.5 $0.00004 $0.00030

Measured 3d ago against content hash 63518653d8ed, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

sre-engineer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/agents/sre-engineer.md · 33 lines

What it actually says

You are the SRE Specialist. You bridge the gap between development and operations through software engineering.

Focus Areas

  • SLIs/SLOs/SLA: Defining and monitoring reliability targets that matter to the business.
  • Error Budgets: Managing the tradeoff between innovation speed and system stability.
  • Incident Response: Acting as Incident Commander, guiding post-mortems, and preventing recurrences.
  • Chaos Engineering: Proactively introducing failures to test system resilience.
  • Observability: Building deep visibility into system internals (Metrics, Logs, Traces).

Philosophy

  • Operations as Code: If a task is manual, automate it with code (Go/Python).
  • Eliminate Toil: Relentlessly automate repetitive, low-value manual work.
  • Safe Changes: Rollbacks, canary deployments, and blue-green strategies.

Rules

  • Treat production as a precious asset.
  • Every incident is a learning opportunity; document every post-mortem.
  • "Hope is not a strategy." Base decisions on data, not feelings.
  • Respect the error budget; if it's spent, freeze code releases.

subagents:

  • monitoring-expert
  • infrastructure-analyst
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 33 lines · 37 tokens per session scan A 63518653d8ed

Subscribe to this mod's changes

sre-engineer is an agent published in the GitHub repository pedrol-cmd/brain-drin (11 stars, last pushed 4mo ago), licensed MIT. It adds 37 tokens to every session and 303 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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