# set_custom_field

Set a custom field value on a document. Requires the document ID, class, field ID (from list_custom_fields), and value. Values are auto-parsed: numbers from numeric strings, booleans from

Agent View of the PolicyLayer registry record for `set_custom_field`. HTML page: https://policylayer.com/tools/dugynoo-huly-mcp/set-custom-field

## Facts

- Tool: `set_custom_field`
- Server: Huly (`dugynoo/huly-mcp`) — https://policylayer.com/tools/dugynoo-huly-mcp.md
- Homepage: https://github.com/dugynoo/huly-mcp
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

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

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

## Why set_custom_field is rated Medium

This tool creates or modifies data reversibly on a document object within the project management system. While it changes document state, the modification is not destructive (reversible via another set_custom_field call) and does not involve code execution or deletion. The severity is medium because misuse could corrupt document metadata or field values across the system, but changes remain reversible.

From the tool's own definition: "Tool name 'set_custom_field' and description 'Set a custom field value on a document' indicates modification of data. The description explicitly states it requires document ID, class, field ID, and value parameters to update custom field values."

## Use case

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

## Recommended policy (PolicyLayer)

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

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

## Other tools on Huly (217)

- `dedup_planner_todos` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/dedup-planner-todos.md
- `delete_attachment` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-attachment.md
- `delete_card` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-card.md
- `delete_channel` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-channel.md
- `delete_channel_message` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-channel-message.md
- `delete_comment` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-comment.md
- `delete_component` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-component.md
- `delete_dm_message` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-dm-message.md
- `delete_document` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-document.md
- `delete_event` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-event.md
- `delete_issue` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-issue.md
- `delete_issue_template` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-issue-template.md
- `delete_label` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-label.md
- `delete_milestone` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-milestone.md
- `delete_notification` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-notification.md
- `delete_organization` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-organization.md
- `delete_person` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-person.md
- `delete_project` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-project.md
- `delete_relation` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-relation.md
- `delete_tag_category` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-tag-category.md
- `delete_teamspace` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-teamspace.md
- `delete_test_case` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-test-case.md
- `delete_test_plan` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-test-plan.md
- `delete_test_result` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-test-result.md
- `delete_test_run` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-test-run.md
- `delete_test_suite` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-test-suite.md
- `delete_thread_reply` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-thread-reply.md
- `delete_workspace` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/delete-workspace.md
- `remove_issue_relation` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/remove-issue-relation.md
- `remove_organization_member` — Destructive — https://policylayer.com/tools/dugynoo-huly-mcp/remove-organization-member.md
- …and 187 more: https://policylayer.com/tools/dugynoo-huly-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=dugynoo-huly-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/dugynoo-huly-mcp