site-reliability

site-reliability is a skill for Claude Code, Codex from nimadorostkar/Claude-Skills-collection. It costs 39 tokens per session (1,238 once invoked), scanned A, original, MIT.

A guide to site reliability, the practice of measuring how dependable a service must be and designing for failure. It covers service goals, capacity, overload behavior, retries, timeouts, and graceful degradation.

In plain words
What is it for?
Use it to define SLOs and error budgets, plan capacity, design fallback behavior, and set retry, timeout, and circuit-breaker policies.
Why use it?
It helps teams choose realistic reliability targets and prevents retries or overloaded dependencies from making an outage worse.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to define SLOs and error budgets, plan capacity, design fallback behavior, and set retry, timeout, and circuit-breaker policies.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nimadorostkar/claude-skills-collection/site-reliability
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.

Any agent
npx skills add nimadorostkar/Claude-Skills-collection --skill site-reliability
Clone the repo
git clone --depth 1 https://github.com/nimadorostkar/Claude-Skills-collection

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for site-reliability

README.md
[![agentmods](https://agentmods.dev/badge/skills/nimadorostkar/claude-skills-collection/site-reliability/github.svg)](https://agentmods.dev/skills/nimadorostkar/claude-skills-collection/site-reliability)
Your own site
<a href="https://agentmods.dev/skills/nimadorostkar/claude-skills-collection/site-reliability"><img src="https://agentmods.dev/badge/skills/nimadorostkar/claude-skills-collection/site-reliability/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for site-reliability

Your own site · 80×15
<a href="https://agentmods.dev/skills/nimadorostkar/claude-skills-collection/site-reliability"><img src="https://agentmods.dev/badge/skills/nimadorostkar/claude-skills-collection/site-reliability.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,238 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 111
    Skill allows unbounded resource consumption (API calls, storage, compute). Without rate limits or quotas, a compromised or misbehaving agent can cause denial-of-service or cost overruns.
    Fix: Set explicit rate limits, timeouts, and resource quotas for API calls, file operations, and compute. Implement circuit breakers for runaway loops.
How audits are shown
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 5.1 $0.00039 $0.01238
Opus 5 $0.00019 $0.00619
Sonnet 5 $0.00008 $0.00248
Haiku 4.5 $0.00004 $0.00124

Measured 9d ago against content hash 71592a63b66b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

site-reliability 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 9d 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.

skills/devops/site-reliability/SKILL.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Site Reliability

Purpose

Make reliability a measured, budgeted property rather than an aspiration. Perfect availability is neither achievable nor desirable — the goal is to be exactly as reliable as the product requires, and to spend the remaining budget on shipping.

When to Use

  • Defining SLOs and an error-budget policy.
  • Designing a system's behavior under overload or dependency failure.
  • Capacity planning ahead of a known load event.
  • Setting retry and timeout policy across services.

Capabilities

  • SLI selection, SLO definition, and error-budget policy.
  • Availability arithmetic across dependency chains.
  • Graceful degradation and load shedding.
  • Retry, timeout, and circuit-breaker configuration.
  • Capacity planning and load testing.

Inputs

  • The user-facing operations that matter, ranked.
  • Current reliability, measured — not assumed.
  • Dependency availability, including third parties.

Outputs

  • SLOs with an error budget and an agreed policy for exhausting it.
  • Defined degraded behavior for each dependency failure.
  • Timeout and retry budgets that do not amplify an outage.

Workflow

  1. Pick SLIs the user would recognize — Request success rate and latency for the operations that matter. Not internal metrics.
  2. Set the SLO from the business need — 99.9% is 43 minutes of downtime per month. 99.99% is 4 minutes, and costs roughly ten times as much to achieve. Choose knowingly.
  3. Do the dependency arithmetic — A service depending synchronously on four services, each at 99.9%, has a ceiling of 99.6%. If your SLO is higher than your dependency chain permits, the design must change, not the target.
  4. Design the degradation — For each dependency: what does the user see when it is down? Serve stale, serve partial, or fail fast with a clear message. Decide in advance.
  5. Bound the retries — A retry budget, not unlimited retries. Retries during a partial outage are what turn it into a total one.
  6. Shed load deliberately — Under overload, reject the excess at the edge, cheaply. A system that accepts everything and times out serves nobody.

Read the full file on GitHub · 114 lines

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. 9d ago First seen · 114 lines · 39 tokens per session scan A 71592a63b66b

Subscribe to this mod's changes

site-reliability is a skill published in the GitHub repository nimadorostkar/Claude-Skills-collection (26 stars, last pushed 25d ago), licensed MIT. It adds 39 tokens to every session and 1,238 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 2026-09-03.

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