# acf_update_post_fields

Aktualisiert ACF Custom Fields eines Posts/einer Seite

Agent View of the PolicyLayer registry record for `acf_update_post_fields`. HTML page: https://policylayer.com/tools/c-sakel-wp-mcp-server/acf-update-post-fields

## Facts

- Tool: `acf_update_post_fields`
- Server: WordPress MCP Server (`c-sakel/wp-mcp-server`) — https://policylayer.com/tools/c-sakel-wp-mcp-server.md
- Homepage: https://github.com/c-sakel/wp-mcp-server
- 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": "acf_update_post_fields",
    "arguments": {}
  }
}
```

## Why acf_update_post_fields is rated Medium

This tool creates or modifies data reversibly by updating Advanced Custom Fields (ACF) metadata attached to WordPress posts and pages. While changes can be undone through WordPress revision history or by updating fields again, the primary function is to alter existing data. This qualifies as Write rather than Destructive (no deletion), Execute (no code execution), or other categories.

From the tool's own definition: "Tool name 'acf_update_post_fields' and description 'Aktualisiert ACF Custom Fields eines Posts/einer Seite' (Updates ACF Custom Fields of a post/page) explicitly indicates modification of post metadata through custom fields."

## Use case

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

## Recommended policy (PolicyLayer)

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

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

## Other tools on WordPress MCP Server (191)

- `admin_delete_app_password` — Destructive — https://policylayer.com/tools/c-sakel-wp-mcp-server/admin-delete-app-password.md
- `admin_delete_user` — Destructive — https://policylayer.com/tools/c-sakel-wp-mcp-server/admin-delete-user.md
- `comment_delete` — Destructive — https://policylayer.com/tools/c-sakel-wp-mcp-server/comment-delete.md
- `image_delete_unused` — Destructive — https://policylayer.com/tools/c-sakel-wp-mcp-server/image-delete-unused.md
- `revision_cleanup` — Destructive — https://policylayer.com/tools/c-sakel-wp-mcp-server/revision-cleanup.md
- `revision_delete` — Destructive — https://policylayer.com/tools/c-sakel-wp-mcp-server/revision-delete.md
- `woo_delete_product` — Destructive — https://policylayer.com/tools/c-sakel-wp-mcp-server/woo-delete-product.md
- `wp_delete_post` — Destructive — https://policylayer.com/tools/c-sakel-wp-mcp-server/wp-delete-post.md
- `image_regenerate_thumbnails` — Execute — https://policylayer.com/tools/c-sakel-wp-mcp-server/image-regenerate-thumbnails.md
- `jwt_authenticate` — Execute — https://policylayer.com/tools/c-sakel-wp-mcp-server/jwt-authenticate.md
- `rest_api_batch` — Execute — https://policylayer.com/tools/c-sakel-wp-mcp-server/rest-api-batch.md
- `rest_api_execute` — Execute — https://policylayer.com/tools/c-sakel-wp-mcp-server/rest-api-execute.md
- `a11y_check_color_contrast` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/a11y-check-color-contrast.md
- `a11y_check_forms` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/a11y-check-forms.md
- `a11y_check_images` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/a11y-check-images.md
- `a11y_check_links` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/a11y-check-links.md
- `a11y_check_page_structure` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/a11y-check-page-structure.md
- `a11y_generate_report` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/a11y-generate-report.md
- `acf_bulk_get_fields` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/acf-bulk-get-fields.md
- `acf_get_field_group` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/acf-get-field-group.md
- `acf_get_flexible_layouts` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/acf-get-flexible-layouts.md
- `acf_get_options` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/acf-get-options.md
- `acf_get_post_fields` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/acf-get-post-fields.md
- `acf_get_repeater_rows` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/acf-get-repeater-rows.md
- `acf_get_term_fields` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/acf-get-term-fields.md
- `acf_get_user_fields` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/acf-get-user-fields.md
- `acf_list_field_groups` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/acf-list-field-groups.md
- `acf_list_field_types` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/acf-list-field-types.md
- `admin_export_content` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/admin-export-content.md
- `admin_flush_cache` — Read — https://policylayer.com/tools/c-sakel-wp-mcp-server/admin-flush-cache.md
- …and 161 more: https://policylayer.com/tools/c-sakel-wp-mcp-server.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=c-sakel-wp-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/c-sakel-wp-mcp-server