OpenClaw Skill

prometheus

Query Prometheus monitoring data to check server metrics, resource usage, and system health. Use when the user asks about server status, disk space, CPU/memory usage, network stats, or any metrics collected by Prometheus. Supports multiple Prometheus instances with aggregated queries, config file or environment variables, and HTTP Basic Auth.

Install

$npx clawhub@latest install prometheus

View on GitHubv1.1.0

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Active installs17

Stars2

Prometheus Skill

Query Prometheus monitoring data from one or multiple instances. Supports federation across multiple Prometheus servers with a single command.

Quick Start

1. Initial Setup

Run the interactive configuration wizard:

bash

cd ~/.openclaw/workspace/skills/prometheus
node scripts/cli.js init

This will create a prometheus.json config file in your OpenClaw workspace (~/.openclaw/workspace/prometheus.json).

2. Start Querying

bash

# Query default instance
node scripts/cli.js query 'up'

# Query all instances at once
node scripts/cli.js query 'up' --all

# List configured instances
node scripts/cli.js instances

Configuration

Config File Location

By default, the skill looks for config in your OpenClaw workspace:

~/.openclaw/workspace/prometheus.json

Priority order:

Path from PROMETHEUS_CONFIG environment variable
~/.openclaw/workspace/prometheus.json
~/.openclaw/workspace/config/prometheus.json
./prometheus.json (current directory)
~/.config/prometheus/config.json

Config Format

Create prometheus.json in your workspace (or use node cli.js init):

json

{
  "instances": [
    {
      "name": "production",
      "url": "https://prometheus.example.com",
      "user": "admin",
      "password": "secret"
    },
    {
      "name": "staging",
      "url": "http://prometheus-staging:9090"
    }
  ],
  "default": "production"
}

Fields:

name — unique identifier for the instance
url — Prometheus server URL
user / password — optional HTTP Basic Auth credentials
default — which instance to use when none specified

Environment Variables (Legacy)

For single-instance setups, you can use environment variables:

bash

export PROMETHEUS_URL=https://prometheus.example.com
export PROMETHEUS_USER=admin        # optional
export PROMETHEUS_PASSWORD=secret   # optional

Usage

Global Flags

Flag	Description
`-c, --config <path>`	Path to config file
`-i, --instance <name>`	Target specific instance
`-a, --all`	Query all configured instances

Commands

Setup

bash

# Interactive configuration wizard
node scripts/cli.js init

Query Metrics

bash

cd ~/.openclaw/workspace/skills/prometheus

# Query default instance
node scripts/cli.js query 'up'

# Query specific instance
node scripts/cli.js query 'up' -i staging

# Query ALL instances at once
node scripts/cli.js query 'up' --all

# Custom config file
node scripts/cli.js query 'up' -c /path/to/config.json

Common Queries

Disk space usage:

bash

node scripts/cli.js query '100 - (node_filesystem_avail_bytes / node_filesystem_size_bytes * 100)' --all

CPU usage:

bash

node scripts/cli.js query '100 - (avg by (instance) (irate(node_cpu_seconds_total{mode="idle"}[5m])) * 100)' --all

Memory usage:

bash

node scripts/cli.js query '(node_memory_MemTotal_bytes - node_memory_MemAvailable_bytes) / node_memory_MemTotal_bytes * 100' --all

Load average:

bash

node scripts/cli.js query 'node_load1' --all

List Configured Instances

bash

node scripts/cli.js instances

Output:

json

{
  "default": "production",
  "instances": [
    { "name": "production", "url": "https://prometheus.example.com", "hasAuth": true },
    { "name": "staging", "url": "http://prometheus-staging:9090", "hasAuth": false }
  ]
}

Other Commands

bash

# List all metrics matching pattern
node scripts/cli.js metrics 'node_memory_*'

# Get label names
node scripts/cli.js labels --all

# Get values for a label
node scripts/cli.js label-values instance --all

# Find time series
node scripts/cli.js series '{__name__=~"node_cpu_.*", instance=~".*:9100"}' --all

# Get active alerts
node scripts/cli.js alerts --all

# Get scrape targets
node scripts/cli.js targets --all

Multi-Instance Output Format

When using --all, results include data from all instances:

json

{
  "resultType": "vector",
  "results": [
    {
      "instance": "production",
      "status": "success",
      "resultType": "vector",
      "result": [...]
    },
    {
      "instance": "staging",
      "status": "success",
      "resultType": "vector",
      "result": [...]
    }
  ]
}

Errors on individual instances don't fail the entire query — they appear with "status": "error" in the results array.

Common Queries Reference

Metric	PromQL Query
Disk free %	`node_filesystem_avail_bytes / node_filesystem_size_bytes * 100`
Disk used %	`100 - (node_filesystem_avail_bytes / node_filesystem_size_bytes * 100)`
CPU idle %	`avg by (instance) (irate(node_cpu_seconds_total{mode="idle"}[5m])) * 100`
Memory used %	`(node_memory_MemTotal_bytes - node_memory_MemAvailable_bytes) / node_memory_MemTotal_bytes * 100`
Network RX	`rate(node_network_receive_bytes_total[5m])`
Network TX	`rate(node_network_transmit_bytes_total[5m])`
Uptime	`node_time_seconds - node_boot_time_seconds`
Service up	`up`

Notes

Time range defaults to last 1 hour for instant queries
Use range queries [5m] for rate calculations
All queries return JSON with data.result containing the results
Instance labels typically show host:port format
When using --all, queries run in parallel for faster results
Config is stored outside the skill directory so it persists across skill updates

Created by

@akellacom

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