Save a new bookmark/link to Anybox with optional tags, folder, comment, and starred status.
AI agents use save_bookmark to create or update resources in Anybox MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Anybox MCP Server environment.
This tool creates new bookmarks in the user's Anybox manager, which is a Write operation (reversible data modification). Severity is medium because misuse could clutter the bookmark collection with unwanted entries, but bookmarks can be deleted/edited to restore the original state.
From the tool's definition Tool description states: 'Save a new bookmark/link to Anybox with optional tags, folder, comment, and starred status.' The verb 'save' and the act of creating a new bookmark entry constitutes reversible data creation.
Documented attack patterns abuse exactly the kind of access save_bookmark gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Anybox MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for save_bookmark:
{
"version": "1",
"default": "deny",
"tools": {
"save_bookmark": {
"limits": [
{
"counter": "save_bookmark_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}save_bookmark 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.
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Save a new bookmark/link to Anybox with optional tags, folder, comment, and starred status. It is categorised as a Write tool in the Anybox MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Anybox MCP Server MCP server in PolicyLayer and add a rule for save_bookmark: 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 Anybox MCP Server. Nothing to install.
save_bookmark 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 save_bookmark 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 save_bookmark. 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.
save_bookmark is provided by the Anybox MCP Server MCP server (tommertron/anyboxmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Anybox MCP Server, 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.
4 Anybox MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.