# add_image_caption

Add a caption to an image in the document.

Agent View of the PolicyLayer registry record for `add_image_caption`. HTML page: https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/add-image-caption

## Facts

- Tool: `add_image_caption`
- Server: Docx (`andrew82106/llm_docx_agent_mcp`) — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp.md
- Homepage: https://github.com/Andrew82106/LLM_Docx_Agent_MCP
- Risk category: Write (Medium risk)
- Registry record: grade D, 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": "add_image_caption",
    "arguments": {}
  }
}
```

## Why add_image_caption is rated Medium

Adding a caption to an image is a reversible write operation that modifies document content but does not delete data, execute code, or create financial obligations. The change can be undone by removing or editing the caption. Severity is low because caption modifications have minimal blast radius—they affect only document formatting/presentation, not core data integrity or external system state.

From the tool's own definition: "Tool name is 'add_image_caption' and description states it 'Add[s] a caption to an image in the document.' This is a modification operation that adds metadata/formatting to an existing image."

## Use case

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

## Recommended policy (PolicyLayer)

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

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

## Other tools on Docx (23)

- `delete_docx` — Destructive — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/delete-docx.md
- `extract_images` — Read — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/extract-images.md
- `get_document_properties` — Read — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/get-document-properties.md
- `get_equation` — Read — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/get-equation.md
- `health_check` — Read — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/health-check.md
- `list_content_controls` — Read — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/list-content-controls.md
- `list_docx` — Read — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/list-docx.md
- `list_equations` — Read — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/list-equations.md
- `list_images` — Read — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/list-images.md
- `list_merge_fields` — Read — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/list-merge-fields.md
- `list_styles` — Read — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/list-styles.md
- `read_docx` — Read — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/read-docx.md
- `append_docx` — Write — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/append-docx.md
- `apply_bullet_list` — Write — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/apply-bullet-list.md
- `apply_numbered_list` — Write — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/apply-numbered-list.md
- `apply_paragraph_style` — Write — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/apply-paragraph-style.md
- `copy_docx` — Write — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/copy-docx.md
- `create_docx` — Write — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/create-docx.md
- `fill_merge_fields` — Write — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/fill-merge-fields.md
- `insert_image` — Write — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/insert-image.md
- `set_document_properties` — Write — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/set-document-properties.md
- `set_list_level` — Write — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/set-list-level.md
- `write_docx` — Write — https://policylayer.com/tools/andrew82106-llm-docx-agent-mcp/write-docx.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=andrew82106-llm-docx-agent-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/andrew82106-llm-docx-agent-mcp