rc-observability

rc-observability is a skill for Claude Code from rodolfochicone/rc-project. It costs 83 tokens per session (513 once invoked), scanned A, original, MIT.

A set of guides for understanding how production services behave through logs, metrics, traces, service targets, alerts, and incident reviews.

In plain words
What is it for?
Use it to add service instrumentation, define reliability targets and alerts, investigate incidents, find root causes, and write postmortems.
Why use it?
It helps teams find out whether a live service is failing and why, especially when failures are hard to reproduce locally.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: model in frontmatter.

Part of the rc plugin — 32 skills, 2 commands, 4 agents, 5 hooks shipped together

Good fit Use it to add service instrumentation, define reliability targets and alerts, investigate incidents, find root causes, and write postmortems.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rodolfochicone/rc-project/rc-observability
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 rodolfochicone/rc-project --skill rc-observability
Clone the repo
git clone --depth 1 https://github.com/rodolfochicone/rc-project

Made for: Claude Code.

Or install rc, the plugin that ships this one along with the rest of its 32 skills, 2 commands, 4 agents, 5 hooks.

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 rc-observability

README.md
[![agentmods](https://agentmods.dev/badge/skills/rodolfochicone/rc-project/rc-observability.svg)](https://agentmods.dev/skills/rodolfochicone/rc-project/rc-observability)
Your own site
<a href="https://agentmods.dev/skills/rodolfochicone/rc-project/rc-observability"><img src="https://agentmods.dev/badge/skills/rodolfochicone/rc-project/rc-observability.svg" alt="Measured on agentmods" height="20"></a>
Per session 83 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 513 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.
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 $0.00083 $0.00513
Opus 5 $0.00042 $0.00257
Sonnet 5 $0.00017 $0.00103
Haiku 4.5 $0.00008 $0.00051

Measured 8d ago against content hash 4f0eb176fd51, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

rc-observability 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 8d 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/misc/rc-observability/SKILL.md · 34 lines

What it actually says

Observabilidade — guias por tarefa

Leia o guia da tarefa em references/ antes de agir. A meta de qualquer instrumentação, alerta ou postmortem é a mesma: responder "está quebrado? por quê?" rápido, sem adivinhação — seja numa Lambda que falhou silenciosamente, num consumer de SQS travado, ou numa task ECS que reiniciou em loop.

Roteamento

Tarefa Guia
Instrumentar código (logs, correlation/trace ID, métricas RED/USE, tracing distribuído) references/instrumentation.md
Definir SLI/SLO/error budget e alertas acionáveis, montar dashboards references/alerting-slo.md
Resposta a incidente, causa raiz e postmortem references/incident-postmortem.md

Princípios sempre válidos

  • Logue para o leitor futuro do incidente, não para o dev de hoje. Se o log não ajuda alguém sem contexto às 3h da manhã, ele está incompleto.
  • Nunca logue PII, secret ou token. Nem em debug, nem truncado, nem mascarado "só um pouco".
  • Alerte em sintoma que dói pro usuário, não em causa. CPU alta não é alerta; latência/erro que o usuário sente, sim.
  • Instrumente antes de precisar, não durante o incêndio. Se a pergunta "por que isso falhou?" não tem resposta nos logs/métricas existentes, a instrumentação já chegou tarde.

Error Handling

  • Sem acesso aos sinais de produção (logs, métricas, traces, dashboards reais): oriente a instrumentação no código a partir do que existe no repositório e diga explicitamente que a validação em runtime (volume de log, cardinalidade real, comportamento do alerta) ficou pendente.
Files

What ships with it

3 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.

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. 8d ago First seen · 34 lines · 83 tokens per session scan A 4f0eb176fd51

Subscribe to this mod's changes

rc-observability is a skill published in the GitHub repository rodolfochicone/rc-project (19 stars, last pushed 1mo ago), licensed MIT. It adds 83 tokens to every session and 513 once invoked, about $0.0004 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.

Related

Other skills, from other repositories

agent-carnet

Use this skill when the user asks to save, recall, find, or organize notes. Triggers on: 'remember this', 'save this', 'note this', 'what did we discuss about...', 'check the notebook', 'find in carnet'. Also use proactively when discovering findings worth preserving across sessions.

yamadashy/repomix · 67 tokens

deploy-docker-compose

Run the Omnigent server as a Docker compose stack (server + Postgres) on any Docker host — your laptop, a VPS, EC2 by hand, or as the base layer of any container-platform deploy. Invoke when the user wants to build the image, bring up the compose stack, debug the stack on a host they already have, or extend the stack…

omnigent-ai/omnigent · 84 tokens

security-audit

Audit a codebase or directory for security issues (hardcoded secrets, injection, unsafe deserialization, weak crypto, authz gaps) and produce a structured findings report. Use when the user asks for a security review, an audit, or to check code for vulnerabilities. Report only — never fix.

omnigent-ai/omnigent · 64 tokens

taiyi-ui-design

A design-planning guide for describing how an application's user interface should look and behave. It produces a UI-DESIGN.md document covering layouts, components, interactions, accessibility, and error states.

Dong90/oh-my-taiyiforge · 35 tokens

taiyi-evolve

A workflow skill that compares the implemented code with the frozen design after development and testing. It records architecture changes and proposes updates to DESIGN.md, the document describing the intended system structure.

Dong90/oh-my-taiyiforge · 37 tokens

taiyi-diagram-c4

A code-scanning tool that builds C4 architecture documents from a repository. It separates facts observed in the code from conclusions inferred about the design and uses Mermaid diagrams as the source format.

Dong90/oh-my-taiyiforge · 48 tokens