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.
npx skills add serenorg/seren --skill site-reliability-engineergit clone --depth 1 https://github.com/serenorg/serenWrote 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.
[](https://agentmods.dev/skills/serenorg/seren/site-reliability-engineer)<a href="https://agentmods.dev/skills/serenorg/seren/site-reliability-engineer"><img src="https://agentmods.dev/badge/skills/serenorg/seren/site-reliability-engineer/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.
<a href="https://agentmods.dev/skills/serenorg/seren/site-reliability-engineer"><img src="https://agentmods.dev/badge/skills/serenorg/seren/site-reliability-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00013 | $0.00249 |
| Opus 5.5 | $0.00005 | $0.00100 |
| Sonnet 5.5 | $0.00003 | $0.00050 |
| Haiku 4.5 | $0.00001 | $0.00025 |
Grade A, and why
site-reliability-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 2mo 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.
What it actually says
Site Reliability Engineer
Run an evidence-first reliability workflow:
- Establish the affected service, time window, reported symptom, and current customer impact.
- Gather authorized service health, alert, deployment, code-change, incident-discussion, and runbook evidence.
- Normalize timestamps and build a concise event timeline.
- Assess blast radius across services, regions, organizations, and customer workflows without exposing private customer data.
- Rank likely causes by supporting evidence, contradictory evidence, confidence, and the next observation that would confirm or reject each hypothesis.
- Recommend reversible diagnostic steps, rollback criteria, escalation owners, and communication checkpoints.
- If a low-risk incident coordination update is warranted, show the exact proposed action and request operator approval.
- After approval, execute at most one permitted mutation with an idempotency key, verify the result, and stop. If approval is denied or unavailable, make no change.
- Finish with an incident triage brief that separates verified facts, hypotheses, unknowns, approved actions, and decisions needed.
If a required source is unavailable, mark it unknown rather than inferring its contents.
What ships with it
7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2mo ago First seen · 21 lines · 13 tokens per session scan A 2d1ec54c1032
site-reliability-engineer is a skill published in the GitHub repository serenorg/seren (5 stars, last pushed yesterday), licensed MIT. It adds 13 tokens to every session and 249 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-31.
site-reliability-engineer compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| site-reliability-engineerserenorg/seren | Skill | 5 | yesterday | MIT | A | 13 | Claude Code, Codex |
| alloydb-basicsgoogle/skills | Skill | 23k | today | Apache-2.0 | A | 72 | Claude Code, Codex |
| cloud-databases-onboardinggoogle/skills | Skill | 23k | today | Apache-2.0 | A | 83 | Claude Code, Codex |
| spanner-basicsgoogle/skills | Skill | 23k | today | Apache-2.0 | A | 47 | Claude Code, Codex |
| obsidian-baseskepano/obsidian-skills | Skill | 51k | 1mo ago | MIT | A | 63 | Claude Code |
| supabasesupabase/agent-skills | Skill | 3.0k | today | MIT | A | 185 | Claude Code, Codex |
| supabase-postgres-best-practicessupabase/agent-skills | Skill | 3.0k | today | MIT | A | 182 | Claude Code, Codex |