- Updated: March 21, 2026
- 8 min read
Selecting OpenClaw Evaluation Metrics and Building a Real‑Time Grafana Dashboard
Answer: To keep an OpenClaw deployment on UBOS healthy and cost‑effective, choose concrete metrics such as accuracy, latency, cost‑per‑task, throughput, and error rate, then feed those metrics into a Grafana instance that reads from Prometheus (or InfluxDB) and visualizes them in real time.
1. Introduction
OpenClaw is a powerful, open‑source LLM orchestration engine that lets developers route requests to multiple AI providers, apply routing policies, and cache results. When you host OpenClaw on UBOS, you gain a unified platform for scaling, security, and automation. However, without proper observability, you cannot guarantee that the service meets SLA expectations or stays within budget.
This guide walks technical developers through two essential steps:
- Selecting the most meaningful evaluation metrics for an OpenClaw deployment.
- Building a real‑time Grafana dashboard that surfaces those metrics on a UBOS‑hosted instance.
By the end of the article you will have a production‑ready monitoring stack, complete with alerting thresholds and a visual layout that can be shared across your engineering team.
2. Why metric selection matters for OpenClaw
OpenClaw sits at the intersection of cost, latency, and model quality. Choosing the wrong metric can mask critical failures, inflate cloud spend, or cause user‑experience degradation. A well‑structured metric set enables:
- Rapid root‑cause analysis when a request spikes in latency.
- Cost‑control by tracking cost‑per‑task across providers.
- Model governance through continuous accuracy monitoring.
- Capacity planning via throughput and error rate trends.
In the UBOS ecosystem, these metrics can be collected automatically using the built‑in Workflow automation studio and then exposed to Grafana.
3. Key evaluation metrics
Below is a MECE‑structured list of the core metrics you should instrument.
3.1 Accuracy
Accuracy measures how often the model’s output matches a ground‑truth reference. For OpenClaw, you can compute it by comparing the response field against a curated validation set.
3.2 Latency
Latency is the elapsed time from request receipt to response delivery. Capture both p50 (median) and p95 values to understand tail behavior.
3.3 Cost‑per‑Task
This metric aggregates the monetary cost of each API call (including token usage) and divides it by the number of successful tasks. It is essential for budgeting when you route to multiple providers (OpenAI, Anthropic, etc.).
3.4 Throughput
Throughput counts the number of requests processed per second (RPS). It helps you size your UBOS containers and decide when to scale horizontally.
3.5 Error Rate
The proportion of failed requests (HTTP 5xx, timeout, or provider‑specific errors). A rising error rate often precedes a service outage.
Each metric can be expressed as a Prometheus gauge or counter, which Grafana can query directly.
4. Setting up metric collection on UBOS‑hosted OpenClaw
UBOS provides a Web app editor that lets you add custom middleware to OpenClaw. Follow these steps to emit Prometheus‑compatible metrics.
// middleware/metrics.js
const promClient = require('prom-client');
// Define metrics
const latency = new promClient.Histogram({
name: 'openclaw_request_latency_seconds',
help: 'Latency of OpenClaw requests',
buckets: [0.05, 0.1, 0.3, 0.5, 1, 2, 5],
});
const costPerTask = new promClient.Gauge({
name: 'openclaw_cost_per_task_usd',
help: 'Cost per processed task in USD',
});
const errorCounter = new promClient.Counter({
name: 'openclaw_error_total',
help: 'Total number of OpenClaw errors',
});
// Middleware function
module.exports = async (req, res, next) => {
const start = Date.now();
try {
await next(); // forward to OpenClaw core
const duration = (Date.now() - start) / 1000;
latency.observe(duration);
// Assume cost is attached to res.locals.cost
costPerTask.set(res.locals.cost || 0);
} catch (err) {
errorCounter.inc();
throw err;
}
};
1. Create the middleware file (as shown above) inside your OpenClaw project.
2. Register the middleware in app.js:
// app.js
const express = require('express');
const metrics = require('./middleware/metrics');
const app = express();
app.use(metrics); // <-- inject before route handlers
// ... existing OpenClaw routes
app.listen(3000);
3. Expose the Prometheus endpoint so Grafana can scrape it:
// metrics endpoint
app.get('/metrics', async (req, res) => {
res.set('Content-Type', promClient.register.contentType);
res.end(await promClient.register.metrics());
});
Deploy the updated code via the UBOS partner program or directly through the UBOS CLI. Once the container is running, verify the endpoint:
curl http://your-ubos-instance:3000/metricsYou should see a plain‑text list of metric families, ready for Grafana.
5. Installing and configuring Grafana
Grafana can be installed as a Docker container on the same UBOS host or as a managed SaaS instance. The following example uses Docker for maximum control.
# Pull the official Grafana image
docker pull grafana/grafana:latest
# Run Grafana, exposing port 3001
docker run -d --name grafana \
-p 3001:3000 \
-v grafana-storage:/var/lib/grafana \
grafana/grafana:latest
After the container starts, open http://your-ubos-ip:3001 and log in with the default credentials (admin / admin). Immediately change the password and create an API key (Admin → API Keys → Add API Key) for programmatic access.
Next, add a Prometheus data source that points to the OpenClaw metrics endpoint:
- Navigate to Configuration → Data Sources → Add data source.
- Select Prometheus.
- Set the URL to
http://your-ubos-instance:3000/metrics. - Click Save & test. You should see a green confirmation.
Grafana now knows how to pull the metrics you emitted in the previous section.
6. Creating data sources and dashboards
While you can build a dashboard from scratch, UBOS offers a collection of pre‑made templates for quick start. For this guide we’ll create a custom dashboard that aligns with the five key metrics.
6.1 Create a new dashboard
- Click + → Dashboard → New Dashboard.
- Select Add new panel and choose the Prometheus data source you configured.
6.2 Panel for Accuracy
Assuming you store accuracy as a gauge named openclaw_accuracy_percent:
openclaw_accuracy_percentSet the visualization type to Gauge, configure thresholds (e.g., green > 90%, yellow 70‑90%, red < 70%).
6.3 Panel for Latency
Use the histogram metric openclaw_request_latency_seconds_bucket and apply a Heatmap or Time series panel.
histogram_quantile(0.95, sum(rate(openclaw_request_latency_seconds_bucket[5m])) by (le))This query returns the 95th‑percentile latency over the last five minutes.
6.4 Panel for Cost‑per‑Task
Display the gauge openclaw_cost_per_task_usd as a Stat panel with a dollar sign unit.
6.5 Panel for Throughput
Throughput can be derived from the request counter:
rate(openclaw_requests_total[1m])Visualize it as a Bar gauge or Time series chart.
6.6 Panel for Error Rate
Calculate error percentage using the error counter and total request counter:
(rate(openclaw_error_total[1m]) / rate(openclaw_requests_total[1m])) * 100Show this as a Gauge** with red alert at >5%.
After adding all panels, arrange them in a grid that mirrors the order of the metrics list. Save the dashboard as OpenClaw Real‑Time Monitoring.
7. Visualizing each metric in real time
Grafana automatically refreshes panels based on the Refresh interval you set (default 5s). For production environments, a 15‑second interval balances load and timeliness.
Tips for optimal visualization:
- Use thresholds to color‑code gauges—this gives instant visual cues.
- Enable annotations to mark deployments or configuration changes directly on the timeline.
- Leverage templating variables (e.g.,
$provider) to switch views between OpenAI, Anthropic, or custom LLMs.
Example of a templated query for provider‑specific latency:
histogram_quantile(0.95, sum(rate(openclaw_request_latency_seconds_bucket{provider="$provider"}[5m])) by (le))This lets you select a provider from a dropdown and instantly see its latency distribution.
8. Best practices and troubleshooting
8.1 Keep metric names consistent
Follow Prometheus naming conventions: use snake_case, include the system name (openclaw_), and avoid ambiguous abbreviations.
8.2 Scrape interval tuning
For high‑traffic OpenClaw clusters, set the Prometheus scrape interval to 5s. For low‑volume dev environments, 30s reduces overhead.
8.3 Alerting rules
Create alerts in Grafana or Prometheus Alertmanager. Example rule for latency spikes:
- alert: OpenClawHighLatency
expr: histogram_quantile(0.95, sum(rate(openclaw_request_latency_seconds_bucket[1m])) by (le)) > 2
for: 2m
labels:
severity: critical
annotations:
summary: "95th‑percentile latency > 2 seconds"
description: "Latency has exceeded the threshold for more than 2 minutes."
8.4 Common pitfalls
- Missing labels: Forgetting to tag metrics with
providermakes filtering impossible. - Metric overload: Exporting every internal counter can overwhelm Prometheus; focus on business‑critical signals.
- Dashboard latency: Rendering many panels at once can slow the UI; group related panels into tabs.
8.5 Leverage UBOS automation
Use the AI marketing agents to automatically generate weekly performance reports from Grafana snapshots. This reduces manual effort and keeps stakeholders informed.
9. Conclusion and next steps
By selecting the five core metrics—accuracy, latency, cost‑per‑task, throughput, and error rate—and wiring them into a Grafana dashboard, you gain real‑time visibility into every facet of your OpenClaw deployment on UBOS. This observability foundation enables proactive scaling, cost optimization, and rapid debugging, turning your AI orchestration layer into a reliable production service.
Ready to expand? Consider:
- Integrating OpenAI ChatGPT integration to enrich prompt routing logic.
- Adding a ChatGPT and Telegram integration for real‑time alerting.
- Exploring the Enterprise AI platform by UBOS for multi‑tenant governance.
For a deeper dive into UBOS capabilities, visit the UBOS platform overview or check out the UBOS portfolio examples to see how other teams have visualized AI workloads.
Stay ahead of the curve—monitor, iterate, and let data drive your AI strategy.
For background on the latest OpenClaw release, see the OpenClaw release notes.