Replace ALL content in a code editor (Monaco, CodeMirror, Ace, ProseMirror). Use ONLY for code editors — Airtable automations, GitHub gists, CodePen, n8n code nodes, etc. NOT for rich text editors like Medium/LinkedIn (use safari_fill for those). Detects ProseMirror/Draft.js/CodeMirror/Monaco/Ace...
Part of the Safari server.
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AI agents use safari_replace_editor to create or modify resources in Safari. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call safari_replace_editor repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Safari.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"safari_replace_editor": {
"limits": [
{
"counter": "safari_replace_editor_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Safari policy for all 91 tools.
These attack patterns abuse exactly the kind of access safari_replace_editor gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Replace ALL content in a code editor (Monaco, CodeMirror, Ace, ProseMirror). Use ONLY for code editors — Airtable automations, GitHub gists, CodePen, n8n code nodes, etc. NOT for rich text editors like Medium/LinkedIn (use safari_fill for those). Detects ProseMirror/Draft.js/CodeMirror/Monaco/Ace and uses their native API.. It is categorised as a Write tool in the Safari MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Safari MCP server in PolicyLayer and add a rule for safari_replace_editor: 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 Safari. Nothing to install.
safari_replace_editor 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 safari_replace_editor 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 safari_replace_editor. 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.
safari_replace_editor is provided by the Safari MCP server (safari-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 91 Safari tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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