AI agents invoke notes_sync_incremental to trigger actions in Macnotes. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
The tool triggers a sync operation, which is an executable action that modifies local state based on remote data synchronization. While not destructive (sync is reversible), it executes a background process/service. It falls into Execute rather than Write because the tool doesn't directly create or modify note content—it orchestrates a synchronization process.
From the tool's definition Tool description states 'Run incremental sync' - uses the verb 'Run' which indicates execution of an operation. The operation performs synchronization of notes data, which is a triggered external operation whose effects depend on system state.
Attacks that exploit this kind of access
Run incremental sync (currently same behavior as full sync). It is categorised as a Execute tool in the Macnotes MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Macnotes MCP server in PolicyLayer and add a rule for notes_sync_incremental: 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 Macnotes. Nothing to install.
notes_sync_incremental is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the notes_sync_incremental 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 notes_sync_incremental. 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.
notes_sync_incremental is provided by the Macnotes MCP server (zorrobyte/macnotes-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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