# list_prometheus_metric_metadata

List Prometheus metric metadata. Returns metadata about metrics currently scraped from targets.

Agent View of the PolicyLayer registry record for `list_prometheus_metric_metadata`. HTML page: https://policylayer.com/tools/0xteamhq-mcp-grafana/list-prometheus-metric-metadata

## Facts

- Tool: `list_prometheus_metric_metadata`
- Server: Grafana MCP Server (`0xteamhq/mcp-grafana`) — https://policylayer.com/tools/0xteamhq-mcp-grafana.md
- Homepage: https://github.com/0xteamhq/mcp-grafana
- Risk category: Read (Low risk)
- Registry record: grade C, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "list_prometheus_metric_metadata",
    "arguments": {}
  }
}
```

## Why list_prometheus_metric_metadata is rated Low

This tool retrieves and lists metadata about Prometheus metrics from existing monitoring targets. It performs a read-only query operation with no capability to modify, delete, or execute code. The worst case misuse would be exposure of metric names and metadata, which has minimal security impact. No destructive, financial, or execution capabilities are present.

From the tool's own definition: "Tool name 'list_prometheus_metric_metadata' and description 'List Prometheus metric metadata. Returns metadata about metrics currently scraped from targets' indicate a query/retrieval operation that returns information without modification or side effects."

## Use case

AI agents call list_prometheus_metric_metadata to retrieve information from Grafana MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Grafana MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_prometheus_metric_metadata": {}
  }
}
```

## Other tools on Grafana MCP Server (42)

- `query_loki_logs` — Execute — https://policylayer.com/tools/0xteamhq-mcp-grafana/query-loki-logs.md
- `fetch_pyroscope_profile` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/fetch-pyroscope-profile.md
- `find_error_pattern_logs` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/find-error-pattern-logs.md
- `find_slow_requests` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/find-slow-requests.md
- `generate_deeplink` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/generate-deeplink.md
- `get_alert_rule_by_uid` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/get-alert-rule-by-uid.md
- `get_assertions` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/get-assertions.md
- `get_current_oncall_users` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/get-current-oncall-users.md
- `get_dashboard_by_uid` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/get-dashboard-by-uid.md
- `get_dashboard_panel_queries` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/get-dashboard-panel-queries.md
- `get_dashboard_property` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/get-dashboard-property.md
- `get_dashboard_summary` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/get-dashboard-summary.md
- `get_datasource_by_name` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/get-datasource-by-name.md
- `get_datasource_by_uid` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/get-datasource-by-uid.md
- `get_incident` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/get-incident.md
- `get_oncall_shift` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/get-oncall-shift.md
- `get_sift_analysis` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/get-sift-analysis.md
- `get_sift_investigation` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/get-sift-investigation.md
- `list_alert_rules` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/list-alert-rules.md
- `list_contact_points` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/list-contact-points.md
- `list_datasources` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/list-datasources.md
- `list_incidents` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/list-incidents.md
- `list_loki_label_names` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/list-loki-label-names.md
- `list_loki_label_values` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/list-loki-label-values.md
- `list_oncall_schedules` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/list-oncall-schedules.md
- `list_oncall_teams` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/list-oncall-teams.md
- `list_oncall_users` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/list-oncall-users.md
- `list_prometheus_label_names` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/list-prometheus-label-names.md
- `list_prometheus_label_values` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/list-prometheus-label-values.md
- `list_prometheus_metric_names` — Read — https://policylayer.com/tools/0xteamhq-mcp-grafana/list-prometheus-metric-names.md
- …and 12 more: https://policylayer.com/tools/0xteamhq-mcp-grafana.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=0xteamhq-mcp-grafana · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/0xteamhq-mcp-grafana