Process a webhook from wp-astro-bridge. Validates signature, syncs the specific post (fetch, convert, write). Much faster than full sync — updates only the changed post.
AI agents use sync_webhook to create or update resources in WP Astro MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your WP Astro MCP environment.
The tool fetches content from WordPress via webhook, converts it, and writes it to the Astro project. The primary side effect is writing/updating a converted post file. It is reversible in the sense that files can be overwritten again, placing it in Write rather than Destructive. The 'Execute' category is a consideration since it triggers a pipeline, but the net effect is a file write of converted content.
From the tool's definition syncs the specific post (fetch, convert, write) — updates only the changed post
Documented attack patterns abuse exactly the kind of access sync_webhook gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and WP Astro MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for sync_webhook:
{
"version": "1",
"default": "deny",
"tools": {
"sync_webhook": {
"limits": [
{
"counter": "sync_webhook_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}sync_webhook stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Process a webhook from wp-astro-bridge. Validates signature, syncs the specific post (fetch, convert, write). Much faster than full sync — updates only the changed post. It is categorised as a Write tool in the WP Astro MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the WP Astro MCP server in PolicyLayer and add a rule for sync_webhook: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches WP Astro MCP. Nothing to install.
sync_webhook is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the sync_webhook rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for sync_webhook. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
sync_webhook is provided by the WP Astro MCP server (vapvarun/wp-astro-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from WP Astro MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
60 WP Astro MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.