# cost_breakdown

Use this when the user wants a simple cost breakdown by service, project, or cloud provider (e.g. 'What are my top services by cost?', 'Which projects cost the most?'). Selects the top-N groups by total cost across the range and returns monthly rows for each. The range includes the partial current month; months=1 means month-to-date. Output row order is not a cost ranking. For complex multi-filter or multi-metric queries, use run_query instead.

Agent View of the PolicyLayer registry record for `cost_breakdown`. HTML page: https://policylayer.com/tools/doit/cost-breakdown

## Facts

- Tool: `cost_breakdown`
- Server: Doit (`@doitintl/doit-mcp-server`) — https://policylayer.com/tools/doit.md
- Install: `npx -y @doitintl/doit-mcp-server`
- Homepage: https://www.npmjs.com/package/@doitintl/doit-mcp-server
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 4 (1 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `topN` | integer | no | Top dimension values ranked across the range (default 10, max 25). Each value can have a row per month; this is not a row cap. |
| `cloud` | string | no | Filter to a specific cloud provider. Accepts aliases like "aws", "gcp", "azure". |
| `months` | integer | no | Number of calendar months, 1–24 (default 1): N-1 complete months plus the current month-to-date. 1 means current month-to-date. |
| `groupBy` | string | yes | Dimension to group costs by. "service" = cloud service, "project" = project/account/subscription, "cloud" = cloud provider. |

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": "cost_breakdown",
    "arguments": {
      "groupBy": "<groupBy>"
    }
  }
}
```

## Why cost_breakdown is rated Low

Even though cost_breakdown only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

## Use case

AI agents call cost_breakdown to retrieve information from Doit 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 Doit:

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

## Other tools on Doit (237)

- `cancel_async_operation` — Destructive — https://policylayer.com/tools/doit/cancel-async-operation.md
- `cancel_invite` — Destructive — https://policylayer.com/tools/doit/cancel-invite.md
- `confirm_action` — Destructive — https://policylayer.com/tools/doit/confirm-action.md
- `delete_account_role` — Destructive — https://policylayer.com/tools/doit/delete-account-role.md
- `delete_alert` — Destructive — https://policylayer.com/tools/doit/delete-alert.md
- `delete_allocation` — Destructive — https://policylayer.com/tools/doit/delete-allocation.md
- `delete_annotation` — Destructive — https://policylayer.com/tools/doit/delete-annotation.md
- `delete_ava_conversation` — Destructive — https://policylayer.com/tools/doit/delete-ava-conversation.md
- `delete_budget` — Destructive — https://policylayer.com/tools/doit/delete-budget.md
- `delete_cloudflow_connection` — Destructive — https://policylayer.com/tools/doit/delete-cloudflow-connection.md
- `delete_custom_theme` — Destructive — https://policylayer.com/tools/doit/delete-custom-theme.md
- `delete_customer_geographic_access_scope` — Destructive — https://policylayer.com/tools/doit/delete-customer-geographic-access-scope.md
- `delete_customer_group` — Destructive — https://policylayer.com/tools/doit/delete-customer-group.md
- `delete_datahub_dataset` — Destructive — https://policylayer.com/tools/doit/delete-datahub-dataset.md
- `delete_datahub_datasets` — Destructive — https://policylayer.com/tools/doit/delete-datahub-datasets.md
- `delete_datahub_events_by_filter` — Destructive — https://policylayer.com/tools/doit/delete-datahub-events-by-filter.md
- `delete_folder` — Destructive — https://policylayer.com/tools/doit/delete-folder.md
- `delete_geographic_access_custom_region` — Destructive — https://policylayer.com/tools/doit/delete-geographic-access-custom-region.md
- `delete_insight_result` — Destructive — https://policylayer.com/tools/doit/delete-insight-result.md
- `delete_insight_results` — Destructive — https://policylayer.com/tools/doit/delete-insight-results.md
- `delete_label` — Destructive — https://policylayer.com/tools/doit/delete-label.md
- `delete_report` — Destructive — https://policylayer.com/tools/doit/delete-report.md
- `delete_role` — Destructive — https://policylayer.com/tools/doit/delete-role.md
- `delete_service_account` — Destructive — https://policylayer.com/tools/doit/delete-service-account.md
- `delete_service_account_token` — Destructive — https://policylayer.com/tools/doit/delete-service-account-token.md
- `delete_user` — Destructive — https://policylayer.com/tools/doit/delete-user.md
- `delete_user_geographic_access_scope` — Destructive — https://policylayer.com/tools/doit/delete-user-geographic-access-scope.md
- `id_of_asset` — Destructive — https://policylayer.com/tools/doit/id-of-asset.md
- `remove_ticket_tags` — Destructive — https://policylayer.com/tools/doit/remove-ticket-tags.md
- `async_run_inline` — Execute — https://policylayer.com/tools/doit/async-run-inline.md
- …and 207 more: https://policylayer.com/tools/doit.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=doit · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/doit