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 julianobarbosa/claude-code-skills --skill prometheusgit clone --depth 1 https://github.com/julianobarbosa/claude-code-skillsWrote 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/julianobarbosa/claude-code-skills/prometheus)<a href="https://agentmods.dev/skills/julianobarbosa/claude-code-skills/prometheus"><img src="https://agentmods.dev/badge/skills/julianobarbosa/claude-code-skills/prometheus/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/julianobarbosa/claude-code-skills/prometheus"><img src="https://agentmods.dev/badge/skills/julianobarbosa/claude-code-skills/prometheus.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00073 | $0.01369 |
| Opus 5 | $0.00036 | $0.00685 |
| Sonnet 5 | $0.00015 | $0.00274 |
| Haiku 4.5 | $0.00007 | $0.00137 |
Grade A, and why
prometheus scanned grade A with 1 finding 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl 'http://<prometheus>:9090/api/v1/query?query=<promql>&time=<timestamp>' How it starts
The opening of the file, as written. The whole thing — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Prometheus API Skill
Query Prometheus monitoring systems via HTTP API at /api/v1.
Quick Reference
Instant Query
curl 'http://<prometheus>:9090/api/v1/query?query=<promql>&time=<timestamp>'
Range Query
curl 'http://<prometheus>:9090/api/v1/query_range?query=<promql>&start=<ts>&end=<ts>&step=<duration>'
Response Format
All responses return JSON:
{
"status": "success" | "error",
"data": <result>,
"errorType": "<string>",
"error": "<string>",
"warnings": ["<string>"]
}
HTTP codes: 400 (bad params), 422 (expression error), 503 (timeout).
Query Endpoints
| Endpoint | Purpose | Key Parameters |
|---|---|---|
/api/v1/query |
Instant query | query, time, timeout, limit |
/api/v1/query_range |
Range query | query, start, end, step, timeout, limit |
/api/v1/format_query |
Format PromQL | query |
/api/v1/series |
Find series by labels | match[], start, end, limit |
/api/v1/labels |
List label names | start, end, match[], limit |
/api/v1/label/<name>/values |
Label values | start, end, match[], limit |
/api/v1/query_exemplars |
Query exemplars | query, start, end |
Metadata & Status Endpoints
| Endpoint | Purpose |
|---|---|
/api/v1/targets |
Target discovery status (state=active|dropped|any) |
/api/v1/targets/metadata |
Metric metadata from targets |
/api/v1/metadata |
All metric metadata |
/api/v1/rules |
Alerting/recording rules |
/api/v1/alerts |
Active alerts |
/api/v1/alertmanagers |
Alertmanager discovery |
/api/v1/status/config |
Current config YAML |
/api/v1/status/flags |
CLI flags |
/api/v1/status/runtimeinfo |
Runtime info |
/api/v1/status/buildinfo |
Build info |
/api/v1/status/tsdb |
TSDB cardinality stats |
/api/v1/status/walreplay |
WAL replay progress |
Admin Endpoints (require --web.enable-admin-api)
What ships with it
5 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.
- 8d ago First seen · 144 lines · 73 tokens per session scan A dc09f2bae2d1
prometheus is a skill published in the GitHub repository julianobarbosa/claude-code-skills (10 stars, last pushed 16d ago), licensed MIT. It adds 73 tokens to every session and 1,369 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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