# bugsnag_list_spans

Get individual spans belonging to a span group 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. - spanGroupId (string) *required*: ID of the span group - 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) - 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. Analyze individual slow operations 2. Debug performance issues by examining specific traces 3. Find patterns in operation attributes Examples: 1. Get slowest spans for an operation json { "spanGroupId": "[HttpClient]GET-api.example.com", "sort": "duration", "direction": "desc", "perPage": 10 } Expected Output: Array of the 10 slowest span instances 2. Get spans filtered by OS with pagination json { "spanGroupId": "[HttpClient]GET-api.example.com", "sort": "timestamp", "filters": { "os.name": [ { "type": "eq", "value": "iOS" } ] }, "nextUrl": "/projects/123/spans?offset=30&per_page=30" } Expected Output: Array of spans from iOS devices with next page navigation Hints: 1. Sort by duration descending to find the slowest instances 2. Each span includes trace ID for further investigation

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

## Facts

- Tool: `bugsnag_list_spans`
- 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 (1 required)
- 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. |
| `spanGroupId` | string | yes | ID of the span group |

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_spans",
    "arguments": {
      "spanGroupId": "<spanGroupId>"
    }
  }
}
```

## Why bugsnag_list_spans is rated Low

This tool retrieves and queries spans data from BugSnag's error tracking system with no side effects. It supports read-only operations like listing, filtering, and pagination. There is no capability to create, modify, delete, or execute actions—only to fetch and display existing span data.

From the tool's own definition: "Tool name 'bugsnag_list_spans' and description 'Get individual spans belonging to a span group' indicate data retrieval. Parameters include sorting, pagination (perPage, nextUrl), and filtering options typical of query operations."

## Use case

AI agents call bugsnag_list_spans 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_spans": {}
  }
}
```

## Other tools on SmartBear MCP (239)

- `collaborator_delete_collaborator_remote_system_configuration` — Destructive — https://policylayer.com/tools/smartbear-mcp/collaborator-delete-collaborator-remote-system-configuration.md
- `contract-testing_admin_delete_role` — Destructive — https://policylayer.com/tools/smartbear-mcp/contract-testing-admin-delete-role.md
- `contract-testing_admin_delete_team` — Destructive — https://policylayer.com/tools/smartbear-mcp/contract-testing-admin-delete-team.md
- `contract-testing_admin_delete_user` — Destructive — https://policylayer.com/tools/smartbear-mcp/contract-testing-admin-delete-user.md
- `contract-testing_admin_remove_role_from_user` — Destructive — https://policylayer.com/tools/smartbear-mcp/contract-testing-admin-remove-role-from-user.md
- `contract-testing_admin_remove_user_from_team` — Destructive — https://policylayer.com/tools/smartbear-mcp/contract-testing-admin-remove-user-from-team.md
- `contract-testing_admin_reset_roles` — Destructive — https://policylayer.com/tools/smartbear-mcp/contract-testing-admin-reset-roles.md
- `contract-testing_delete_all_integrations` — Destructive — https://policylayer.com/tools/smartbear-mcp/contract-testing-delete-all-integrations.md
- `contract-testing_delete_branch` — Destructive — https://policylayer.com/tools/smartbear-mcp/contract-testing-delete-branch.md
- `contract-testing_delete_environment` — Destructive — https://policylayer.com/tools/smartbear-mcp/contract-testing-delete-environment.md
- `contract-testing_delete_integration` — Destructive — https://policylayer.com/tools/smartbear-mcp/contract-testing-delete-integration.md
- `contract-testing_delete_pacticipant` — Destructive — https://policylayer.com/tools/smartbear-mcp/contract-testing-delete-pacticipant.md
- `contract-testing_delete_secret` — Destructive — https://policylayer.com/tools/smartbear-mcp/contract-testing-delete-secret.md
- `contract-testing_delete_webhook` — Destructive — https://policylayer.com/tools/smartbear-mcp/contract-testing-delete-webhook.md
- `contract-testing_regenerate_api_token` — Destructive — https://policylayer.com/tools/smartbear-mcp/contract-testing-regenerate-api-token.md
- `contract-testing_remove_label_from_pacticipant` — Destructive — https://policylayer.com/tools/smartbear-mcp/contract-testing-remove-label-from-pacticipant.md
- `reflect_cancel_suite_execution` — Destructive — https://policylayer.com/tools/smartbear-mcp/reflect-cancel-suite-execution.md
- `reflect_delete_previous_step` — Destructive — https://policylayer.com/tools/smartbear-mcp/reflect-delete-previous-step.md
- `swagger_delete_portal_product` — Destructive — https://policylayer.com/tools/smartbear-mcp/swagger-delete-portal-product.md
- `swagger_delete_table_of_contents` — Destructive — https://policylayer.com/tools/smartbear-mcp/swagger-delete-table-of-contents.md
- `collaborator_reviewservice_action` — Execute — https://policylayer.com/tools/smartbear-mcp/collaborator-reviewservice-action.md
- `collaborator_test_collaborator_remote_system_configuration_connection` — Execute — https://policylayer.com/tools/smartbear-mcp/collaborator-test-collaborator-remote-system-configuration-connection.md
- `contract-testing_execute_webhook` — Execute — https://policylayer.com/tools/smartbear-mcp/contract-testing-execute-webhook.md
- `contract-testing_generate_pact_tests` — Execute — https://policylayer.com/tools/smartbear-mcp/contract-testing-generate-pact-tests.md
- `contract-testing_review_pact_tests` — Execute — https://policylayer.com/tools/smartbear-mcp/contract-testing-review-pact-tests.md
- `contract-testing_test_execute_webhooks` — Execute — https://policylayer.com/tools/smartbear-mcp/contract-testing-test-execute-webhooks.md
- `reflect_add_prompt_step` — Execute — https://policylayer.com/tools/smartbear-mcp/reflect-add-prompt-step.md
- `reflect_connect_to_session` — Execute — https://policylayer.com/tools/smartbear-mcp/reflect-connect-to-session.md
- `reflect_execute_suite` — Execute — https://policylayer.com/tools/smartbear-mcp/reflect-execute-suite.md
- `reflect_run_test` — Execute — https://policylayer.com/tools/smartbear-mcp/reflect-run-test.md
- …and 209 more: https://policylayer.com/tools/smartbear-mcp.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=smartbear-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/smartbear-mcp