Replace a range of blocks with new blocks. Supports nested blocks via innerBlocks.
AI agents use wp_replace_blocks to create or update resources in Claudaborative Editing — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Claudaborative Editing environment.
wp_replace_blocks performs content modification (replacing blocks) rather than deletion. It is reversible via undo or replacement, making it Write rather than Destructive. The blast radius is high because an AI agent could replace critical post blocks with malicious or nonsensical content, potentially corrupting published or draft posts. Confidence is high due to explicit 'replace' semantics in the description.
From the tool's definition Tool description states 'Replace a range of blocks with new blocks' — this modifies post content reversibly by substituting existing blocks with new ones, a core write operation in WordPress block editor context.
Documented attack patterns abuse exactly the kind of access wp_replace_blocks gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Claudaborative Editing, and nothing reaches the server without passing your rules. This is the rule we recommend for wp_replace_blocks:
{
"version": "1",
"default": "deny",
"tools": {
"wp_replace_blocks": {
"limits": [
{
"counter": "wp_replace_blocks_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}wp_replace_blocks 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.
Replace a range of blocks with new blocks. Supports nested blocks via innerBlocks. It is categorised as a Write tool in the Claudaborative Editing MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Claudaborative Editing MCP server in PolicyLayer and add a rule for wp_replace_blocks: 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 Claudaborative Editing. Nothing to install.
wp_replace_blocks 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 wp_replace_blocks 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 wp_replace_blocks. 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.
wp_replace_blocks is provided by the Claudaborative Editing MCP server (pento/claudaborative-editing). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Claudaborative Editing, 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.
32 Claudaborative Editing tools catalogued and risk-classified — across an index of 43,000+ MCP servers.