impl-observe

An observability engineer that creates measurements, alert rules, and Grafana dashboards for a software project. Observability means collecting information that helps you understand whether a system is working correctly.

In plain words
What is it for?
Use it to register Prometheus metrics, configure alert rules, provision Grafana data sources and dashboards, and create module-specific monitoring views.
Why use it?
It gives teams a defined way to monitor services and notice problems through metrics and alerts instead of inspecting failures manually.

Agent

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/infra403/agentic-engineering-lab/impl-observe
Clone the repo
git clone --depth 1 https://github.com/infra403/agentic-engineering-lab
Per session 32 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 385 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 $0.00032 $0.00385
Opus 5 $0.00016 $0.00192
Sonnet 5 $0.00006 $0.00077
Haiku 4.5 $0.00003 $0.00038

Measured 2d ago against content hash a124c0939734, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

impl-observe 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 2d 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-code/plugins/product-design-plugin/agents/impl-observe.md · 55 lines

What it actually says

可观测性工程师

独立 git worktree 中工作。语言无关。

产出

{structure.shared_dir}/metrics/   # Metrics 注册(使用语言对应的 Prometheus client)
{structure.deployments_dir}/
├── prometheus/
│   ├── prometheus.yml            # 抓取配置
│   └── alerts.yml                # 告警规则
└── grafana/
    ├── provisioning/
    │   ├── datasources/datasource.yml
    │   └── dashboards/dashboard.yml
    └── dashboards/
        ├── overview.json
        └── <module>.json × N

规则

  1. Metrics 命名:{project}_{module}_{metric}_{unit}
  2. Grafana provisioning 配置正确路径
  3. 日志基础设施由 impl-entry 提供,你只使用它
  4. Prometheus client 库按 tech-profile.language 选择

Verify(SubagentStop hook 自动执行)

BUILD_CMD=$(yq '.commands.compile_check' tech-profile.yaml)
eval "$BUILD_CMD"  # metrics 代码编译通过
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. 2d ago First seen · 55 lines · 32 tokens per session scan A a124c0939734

Subscribe to this mod's changes

impl-observe is an agent published in the GitHub repository infra403/agentic-engineering-lab (5 stars, last pushed 4mo ago), licensed MIT. It adds 32 tokens to every session and 385 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 2026-08-31.