# TRELLO_ADD_BOARDS_LISTS_BY_ID_BOARD

Creates a new, empty list on a specified, existing Trello board, typically used as a column or category for organizing cards.

Agent View of the PolicyLayer registry record for `TRELLO_ADD_BOARDS_LISTS_BY_ID_BOARD`. HTML page: https://policylayer.com/tools/trello/trello-add-boards-lists-by-id-board

## Facts

- Tool: `TRELLO_ADD_BOARDS_LISTS_BY_ID_BOARD`
- Server: Trello (`mcp-server-trello`) — https://policylayer.com/tools/trello.md
- Install: `npx -y mcp-server-trello`
- Homepage: git+https://github.com/Infall-Insurance/mcp-server-trello.git
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 3
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `pos` | string | no | The position of the new list on the board. Valid values are 'top', 'bottom', or a positive number (e.g., 1, 2.5, 3). If not provided, the list is added to the b |
| `name` | string | no | The name for the new list. Must be a string with a length from 1 to 16384 characters. |
| `idBoard` | string | no | The ID of the board to which the new list will be added. |

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": "TRELLO_ADD_BOARDS_LISTS_BY_ID_BOARD",
    "arguments": {}
  }
}
```

## Why TRELLO_ADD_BOARDS_LISTS_BY_ID_BOARD is rated Medium

This tool creates new content (a list) on a Trello board, which is a Write operation. It is reversible (lists can be deleted or archived), so it does not qualify as Destructive. The severity is medium because while an agent could spam or clutter a board by creating many lists, the impact is confined to that board and can be easily undone by a user with board access.

From the tool's own definition: "'Creates a new, empty list on a specified, existing Trello board' — the tool creates new data structures (lists) that are reversibly modifiable and deletable."

## Use case

AI agents use TRELLO_ADD_BOARDS_LISTS_BY_ID_BOARD to create or update resources in Trello, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Trello environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Trello:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "TRELLO_ADD_BOARDS_LISTS_BY_ID_BOARD": {
      "limits": [
        {
          "counter": "trello_add_boards_lists_by_id_board_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Trello (199)

- `TRELLO_ADD_LISTS_ARCHIVE_ALL_CARDS_BY_ID_LIST` — Destructive — https://policylayer.com/tools/trello/trello-add-lists-archive-all-cards-by-id-list.md
- `TRELLO_ADD_LISTS_MOVE_ALL_CARDS_BY_ID_LIST` — Destructive — https://policylayer.com/tools/trello/trello-add-lists-move-all-cards-by-id-list.md
- `TRELLO_ADD_NOTIFICATIONS_ALL_READ` — Destructive — https://policylayer.com/tools/trello/trello-add-notifications-all-read.md
- `TRELLO_CONVERT_CHECKLIST_ITEM_TO_CARD` — Destructive — https://policylayer.com/tools/trello/trello-convert-checklist-item-to-card.md
- `TRELLO_DELETE_ACTIONS_BY_ID_ACTION` — Destructive — https://policylayer.com/tools/trello/trello-delete-actions-by-id-action.md
- `TRELLO_DELETE_BOARDS_MEMBERS_BY_ID_BOARD_BY_ID_MEMBER` — Destructive — https://policylayer.com/tools/trello/trello-delete-boards-members-by-id-board-by-id-member.md
- `TRELLO_DELETE_BOARDS_POWER_UPS_BY_ID_BOARD_BY_POWER_UP` — Destructive — https://policylayer.com/tools/trello/trello-delete-boards-power-ups-by-id-board-by-power-up.md
- `TRELLO_DELETE_CARDS_ACTIONS_COMMENTS_BY_ID_CARD_BY_ID_ACTION` — Destructive — https://policylayer.com/tools/trello/trello-delete-cards-actions-comments-by-id-card-by-id-action.md
- `TRELLO_DELETE_CARDS_ATTACHMENTS_BY_ID_CARD_BY_ID_ATTACHMENT` — Destructive — https://policylayer.com/tools/trello/trello-delete-cards-attachments-by-id-card-by-id-attachment.md
- `TRELLO_DELETE_CARDS_BY_ID_CARD` — Destructive — https://policylayer.com/tools/trello/trello-delete-cards-by-id-card.md
- `TRELLO_DELETE_CARDS_CHECKLISTS_BY_ID_CARD_BY_ID_CHECKLIST` — Destructive — https://policylayer.com/tools/trello/trello-delete-cards-checklists-by-id-card-by-id-checklist.md
- `TRELLO_DELETE_CARDS_ID_MEMBERS_BY_ID_CARD_BY_ID_MEMBER` — Destructive — https://policylayer.com/tools/trello/trello-delete-cards-id-members-by-id-card-by-id-member.md
- `TRELLO_DELETE_CARDS_LABELS_BY_ID_CARD_BY_COLOR` — Destructive — https://policylayer.com/tools/trello/trello-delete-cards-labels-by-id-card-by-color.md
- `TRELLO_DELETE_CARDS_MEMBERS_VOTED_BY_ID_CARD_BY_ID_MEMBER` — Destructive — https://policylayer.com/tools/trello/trello-delete-cards-members-voted-by-id-card-by-id-member.md
- `TRELLO_DELETE_CARDS_STICKERS_BY_ID_CARD_BY_ID_STICKER` — Destructive — https://policylayer.com/tools/trello/trello-delete-cards-stickers-by-id-card-by-id-sticker.md
- `TRELLO_DELETE_CHECKLIST_ITEM` — Destructive — https://policylayer.com/tools/trello/trello-delete-checklist-item.md
- `TRELLO_DELETE_CHECKLISTS_BY_ID_CHECKLIST` — Destructive — https://policylayer.com/tools/trello/trello-delete-checklists-by-id-checklist.md
- `TRELLO_DELETE_LABELS_BY_ID_LABEL` — Destructive — https://policylayer.com/tools/trello/trello-delete-labels-by-id-label.md
- `TRELLO_DELETE_MEMBER_BOARD_BACKGROUND` — Destructive — https://policylayer.com/tools/trello/trello-delete-member-board-background.md
- `TRELLO_DELETE_MEMBER_CUSTOM_STICKER` — Destructive — https://policylayer.com/tools/trello/trello-delete-member-custom-sticker.md
- `TRELLO_DELETE_MEMBER_SAVED_SEARCH` — Destructive — https://policylayer.com/tools/trello/trello-delete-member-saved-search.md
- `TRELLO_DELETE_MEMBERS_BOARD_STARS_BY_ID_MEMBER_BY_ID_BOARD_STAR` — Destructive — https://policylayer.com/tools/trello/trello-delete-members-board-stars-by-id-member-by-id-board-star.md
- `TRELLO_DELETE_ORG_ASSOCIATED_DOMAIN` — Destructive — https://policylayer.com/tools/trello/trello-delete-org-associated-domain.md
- `TRELLO_DELETE_ORGANIZATIONS_BY_ID_ORG` — Destructive — https://policylayer.com/tools/trello/trello-delete-organizations-by-id-org.md
- `TRELLO_DELETE_ORGANIZATIONS_LOGO_BY_ID_ORG` — Destructive — https://policylayer.com/tools/trello/trello-delete-organizations-logo-by-id-org.md
- `TRELLO_DELETE_ORGANIZATIONS_MEMBERS_ALL_BY_ID_ORG_BY_ID_MEMBER` — Destructive — https://policylayer.com/tools/trello/trello-delete-organizations-members-all-by-id-org-by-id-member.md
- `TRELLO_DELETE_ORGANIZATIONS_MEMBERS_BY_ID_ORG_BY_ID_MEMBER` — Destructive — https://policylayer.com/tools/trello/trello-delete-organizations-members-by-id-org-by-id-member.md
- `TRELLO_DELETE_ORGANIZATIONS_PREFS_ORG_INVITE_RESTRICT_BY_ID_ORG` — Destructive — https://policylayer.com/tools/trello/trello-delete-organizations-prefs-org-invite-restrict-by-id-org.md
- `TRELLO_DELETE_TOKENS_BY_TOKEN` — Destructive — https://policylayer.com/tools/trello/trello-delete-tokens-by-token.md
- `TRELLO_DELETE_TOKENS_WEBHOOKS_BY_TOKEN_BY_ID_WEBHOOK` — Destructive — https://policylayer.com/tools/trello/trello-delete-tokens-webhooks-by-token-by-id-webhook.md
- …and 169 more: https://policylayer.com/tools/trello.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`

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