Trigger a sync between the local Anki collection and AnkiWeb. Fire-and-forget: success means Anki accepted the request, not that AnkiWeb received the data. If a blocking dialog is open in Anki (sync conflict, full-sync prompt, re-auth), the sync stays queued until a human dismisses it. Requires t...
AI agents invoke sync to trigger actions in Anki MCP Server. 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.
This tool executes an external operation (cloud synchronization) that triggers side effects beyond the local system. While not destructive or financial in nature, it performs an action that causes external state changes (data sync to AnkiWeb) and cannot be simply reversed like a Write operation.
From the tool's definition Tool description states 'Trigger a sync between the local Anki collection and AnkiWeb' and explicitly notes it is 'Fire-and-forget' with potential side effects including data synchronization to external services.
Documented attack patterns abuse exactly the kind of access sync gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Anki MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for sync:
{
"version": "1",
"default": "deny",
"tools": {
"sync": {
"limits": [
{
"counter": "sync_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}sync stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
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Trigger a sync between the local Anki collection and AnkiWeb. Fire-and-forget: success means Anki accepted the request, not that AnkiWeb received the data. If a blocking dialog is open in Anki (sync conflict, full-sync prompt, re-auth), the sync stays queued until a human dismisses it. Requires the user to be signed into AnkiWeb via the Anki GUI. It is categorised as a Execute tool in the Anki MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Anki MCP Server MCP server in PolicyLayer and add a rule for sync: 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 Anki MCP Server. Nothing to install.
sync 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 sync 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 sync. 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.
sync is provided by the Anki MCP Server MCP server (nailuogg/anki-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Anki 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.
12 Anki MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.