# generate_site_image
AI-GENERATE an image for a site (server-side ComfyUI pipeline; no external image needed). Describe the image in the prompt (English works best), get back a permanent CDN URL. Generation is synchronous and takes 20–60 seconds — generate images ONE AT A TIME, never in parallel. The returned image.url is applied with the existing tools: kind "hero" → update_site_branding { hero: { url } }; kind "article" → update_article featuredImageUrl or replace an ![]()
/markdown URL inside content; "logo" → update_site_branding { logo: { url } }. Typical bulk-fix loop for a site with bad/odd images: list_articles → get_article (inspect image URLs) → generate_site_image with a prompt matching the article topic → update_article swapping the old URL for the new one → next article. kind sets the canvas: hero/article 1280×768 (wide), about 1024×768, logo 512×512, generic 1024×1024. Always pass alt — a short literal description of the image content — it is stored with the asset and should also be used as the img alt text (SEO).
Agent View of the PolicyLayer registry record for `generate_site_image`. HTML page: https://policylayer.com/tools/a3plus-mcp/generate-site-image
## Facts
- Tool: `generate_site_image`
- Server: A3plus (`a3plus-mcp`) — https://policylayer.com/tools/a3plus-mcp.md
- Install: `npx -y a3plus-mcp`
- Homepage: https://www.npmjs.com/package/a3plus-mcp
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 5 (2 required)
- Recommended policy verdict: Rate-limited
## Parameters
| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `alt` | string | no | Short literal description of the image content (≤ 500 chars) — stored as the asset alt text. |
| `kind` | string | no | What the image is for — sets the canvas size. Default: article. |
| `prompt` | string | yes | Image description (≤ 2000 chars). Concrete visual language works best: subject, setting, style, lighting. Avoid asking for text/words in the image — text render |
| `siteId` | string | yes | The A3Plus site ID this image is for. |
| `negativePrompt` | string | no | Optional: things to avoid. A strong default (no text/watermarks/low quality) is applied when omitted. |
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": "generate_site_image",
"arguments": {
"prompt": "",
"siteId": ""
}
}
}
```
## Why generate_site_image is rated Medium
An AI agent can call generate_site_image faster than any human can review: one bad instruction and it creates or modifies resources in A3plus by the hundred, each call as confident as the last.
## Use case
AI agents use generate_site_image to create or update resources in A3plus, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your A3plus environment.
## Recommended policy (PolicyLayer)
Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches A3plus:
```json
{
"version": "1",
"default": "deny",
"tools": {
"generate_site_image": {
"limits": [
{
"counter": "generate_site_image_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}
```
## Other tools on A3plus (60)
- `delete_article` — Destructive — https://policylayer.com/tools/a3plus-mcp/delete-article.md
- `delete_sites` — Destructive — https://policylayer.com/tools/a3plus-mcp/delete-sites.md
- `list_domains` — Destructive — https://policylayer.com/tools/a3plus-mcp/list-domains.md
- `remove_project_member` — Destructive — https://policylayer.com/tools/a3plus-mcp/remove-project-member.md
- `update_article` — Destructive — https://policylayer.com/tools/a3plus-mcp/update-article.md
- `retry_sites` — Execute — https://policylayer.com/tools/a3plus-mcp/retry-sites.md
- `transfer_sites` — Financial — https://policylayer.com/tools/a3plus-mcp/transfer-sites.md
- `audit_project_articles` — Read — https://policylayer.com/tools/a3plus-mcp/audit-project-articles.md
- `bind_domain` — Read — https://policylayer.com/tools/a3plus-mcp/bind-domain.md
- `bredgio_list_agents` — Read — https://policylayer.com/tools/a3plus-mcp/bredgio-list-agents.md
- `bredgio_logout` — Read — https://policylayer.com/tools/a3plus-mcp/bredgio-logout.md
- `bredgio_status` — Read — https://policylayer.com/tools/a3plus-mcp/bredgio-status.md
- `bredgio_task_status` — Read — https://policylayer.com/tools/a3plus-mcp/bredgio-task-status.md
- `get_article` — Read — https://policylayer.com/tools/a3plus-mcp/get-article.md
- `get_intake_schema` — Read — https://policylayer.com/tools/a3plus-mcp/get-intake-schema.md
- `get_pack` — Read — https://policylayer.com/tools/a3plus-mcp/get-pack.md
- `get_playbook` — Read — https://policylayer.com/tools/a3plus-mcp/get-playbook.md
- `get_project` — Read — https://policylayer.com/tools/a3plus-mcp/get-project.md
- `get_project_readiness` — Read — https://policylayer.com/tools/a3plus-mcp/get-project-readiness.md
- `get_site_brand` — Read — https://policylayer.com/tools/a3plus-mcp/get-site-brand.md
- `get_site_content` — Read — https://policylayer.com/tools/a3plus-mcp/get-site-content.md
- `get_site_faq` — Read — https://policylayer.com/tools/a3plus-mcp/get-site-faq.md
- `get_site_seo` — Read — https://policylayer.com/tools/a3plus-mcp/get-site-seo.md
- `get_static_pages` — Read — https://policylayer.com/tools/a3plus-mcp/get-static-pages.md
- `gsc_search_analytics` — Read — https://policylayer.com/tools/a3plus-mcp/gsc-search-analytics.md
- `gsc_site_detail` — Read — https://policylayer.com/tools/a3plus-mcp/gsc-site-detail.md
- `gsc_sites` — Read — https://policylayer.com/tools/a3plus-mcp/gsc-sites.md
- `gsc_zero_data_sites` — Read — https://policylayer.com/tools/a3plus-mcp/gsc-zero-data-sites.md
- `index_coverage_report` — Read — https://policylayer.com/tools/a3plus-mcp/index-coverage-report.md
- `list_articles` — Read — https://policylayer.com/tools/a3plus-mcp/list-articles.md
- …and 30 more: https://policylayer.com/tools/a3plus-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=a3plus-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/a3plus-mcp