AI agents call analyzeGraph to retrieve information from Heptabase MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears designed to analyze existing graph structures within Heptabase backups. Analysis is a non-destructive operation that retrieves and processes data. Without evidence of write, delete, or execution capabilities, this falls into Read category.
From the tool's definition Tool name 'analyzeGraph' and server context (Heptabase data analysis) suggest graph analysis/inspection. No description provided, but analysis tools typically retrieve and examine data without modification.
Documented attack patterns abuse exactly the kind of access analyzeGraph gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Heptabase MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for analyzeGraph:
{
"version": "1",
"default": "deny",
"tools": {
"analyzeGraph": {}
}
}analyzeGraph is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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analyzeGraph. It is categorised as a Read tool in the Heptabase MCP MCP Server, which means it retrieves data without modifying state.
Register the Heptabase MCP server in PolicyLayer and add a rule for analyzeGraph: 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 Heptabase MCP. Nothing to install.
analyzeGraph is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the analyzeGraph 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 analyzeGraph. 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.
analyzeGraph is provided by the Heptabase MCP server (larrystanley/heptabase-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Heptabase MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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14 Heptabase MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.