# bugsnag_list_span_groups

List span groups (operations) tracked for performance monitoring Parameters: - projectId (string): Unique identifier of the project. This is optional if a current project is set and is used to set the current project for BugSnag tools. - sort (enum): Field to sort by - direction (enum): Sort direction for ordering results (default: "desc") - perPage (number): How many results to return per page. (default: 30) - starredOnly (boolean): Show only starred span groups - nextUrl (string): URL for retrieving the next page of results. Use the value in the previous response to get the next page when more results are available. Only values provided in the output from this tool can be used. Do not attempt to construct it manually. - filters (record<string, array>): Apply filters to narrow down the span group list. Use the List Trace Fields tool to discover available filter fields. Time filters support extended ISO 8601 format (e.g. 2018-05-20T00:00:00Z) or relative format (e.g. 7d, 24h). (default: {"span.since":[{"type":"eq","value":"7d"}]}) Use Cases: 1. View all operations being tracked for performance 2. Find slow operations by sorting by duration metrics 3. Filter to starred/important span groups Examples: 1. List slowest operations json { "sort": "duration_p95", "direction": "desc", "perPage": 10 } Expected Output: Array of span groups sorted by 95th percentile duration 2. List starred span groups with filtering json { "starredOnly": true, "filters": { "span_group.category": [ { "type": "eq", "value": "full_page_load" } ] } } Expected Output: Array of starred span groups filtered by category Hints: 1. Span groups represent different operation types (page loads, API calls, etc.) 2. Use sort by duration_p95 or duration_p99 to find the slowest operations 3. Star important span groups for quick access 4. Use nextUrl for pagination

Agent View of the PolicyLayer registry record for `bugsnag_list_span_groups`. HTML page: https://policylayer.com/tools/smartbear-mcp/bugsnag-list-span-groups

## Facts

- Tool: `bugsnag_list_span_groups`
- Server: SmartBear MCP (`SmartBear/smartbear-mcp`) — https://policylayer.com/tools/smartbear-mcp.md
- Homepage: https://github.com/SmartBear/smartbear-mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 7
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `sort` | string | no | Field to sort by |
| `filters` | object | no | Apply filters to narrow down the span group list. Use the List Trace Fields tool to discover available filter fields. Time filters support extended ISO 8601 for |
| `nextUrl` | string | no | URL for retrieving the next page of results. Use the value in the previous response to get the next page when more results are available. Only values provided i |
| `perPage` | number | no | How many results to return per page. |
| `direction` | string | no | Sort direction for ordering results |
| `projectId` | string | no | Unique identifier of the project. This is optional if a current project is set and is used to set the current project for BugSnag tools. |
| `starredOnly` | boolean | no | Show only starred span groups |

Parameters from the server's own tool schema.

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

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

## Why bugsnag_list_span_groups is rated Low

This tool retrieves and queries performance monitoring data from BugSnag without side effects. It is a read-only operation that returns filtered and sorted results. The parameters enable different views of the same data but do not alter system state.

From the tool's own definition: "Tool name includes 'list' and description states 'List span groups (operations) tracked for performance monitoring'. Parameters include pagination controls (perPage, nextUrl, sort, direction) and filters (starredOnly) typical of read operations."

## Use case

AI agents call bugsnag_list_span_groups to retrieve information from SmartBear MCP 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 SmartBear MCP:

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

## Other tools on SmartBear MCP (239)

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## 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=smartbear-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/smartbear-mcp