AI agents use bookmarks to create or update resources in BinAssistMCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your BinAssistMCP environment.
The tool supports listing (Read), setting (Write), and removing bookmarks. Since it spans Read, Write, and potentially Destructive (remove), the most severe applicable category is Write (removing bookmarks is reversible in a reverse engineering context, as bookmarks can be re-added). Severity is medium because misuse could alter analyst annotations in Binary Ninja, but blast radius is limited to bookmark metadata.
From the tool's definition Manage bookmarks: list, set, or remove.
Documented attack patterns abuse exactly the kind of access bookmarks gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and BinAssistMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for bookmarks:
{
"version": "1",
"default": "deny",
"tools": {
"bookmarks": {
"limits": [
{
"counter": "bookmarks_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}bookmarks 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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Manage bookmarks: list, set, or remove. It is categorised as a Write tool in the BinAssistMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the BinAssist MCP server in PolicyLayer and add a rule for bookmarks: 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 BinAssistMCP. Nothing to install.
bookmarks 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 bookmarks 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 bookmarks. 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.
bookmarks is provided by the BinAssist MCP server (symgraph/binassistmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 44 BinAssistMCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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44 BinAssistMCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.