High Risk →

bear_sync

Trigger a sync of Bear notes from iCloud. Normally an incremental sync fetching only changes. Use 'full' to force a complete re-sync. Most read operations auto-sync when the cache is stale, so manual sync is rarely needed.

Part of the Better Bear MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

better-bear Execute Risk 3/5

AI agents invoke bear_sync to trigger processes or run actions in Better Bear. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.

bear_sync can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. Intercept enforces rate limits and validates arguments to keep execution within safe bounds.

Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.

io-github-kuvopllc-better-bear.yaml
tools:
  bear_sync:
    rules:
      - action: allow
        rate_limit:
          max: 10
          window: 60
        validate:
          required_args: true

See the full Better Bear policy for all 34 tools.

Tool Name bear_sync
Category Execute
Risk Level High

View all 34 tools →

Agents calling execute-class tools like bear_sync have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

Other tools in the Execute risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.

bear_sync is one of the high-risk operations in Better Bear. For the full severity-focused view — only the high-risk tools with their recommended policies — see the breakdown for this server, or browse all high-risk tools across every MCP server.

What does the bear_sync tool do? +

Trigger a sync of Bear notes from iCloud. Normally an incremental sync fetching only changes. Use 'full' to force a complete re-sync. Most read operations auto-sync when the cache is stale, so manual sync is rarely needed.. It is categorised as a Execute tool in the Better Bear MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on bear_sync? +

Add a rule in your Intercept YAML policy under the tools section for bear_sync. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Better Bear MCP server.

What risk level is bear_sync? +

bear_sync is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit bear_sync? +

Yes. Add a rate_limit block to the bear_sync rule in your Intercept 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.

How do I block bear_sync completely? +

Set action: deny in the Intercept policy for bear_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.

What MCP server provides bear_sync? +

bear_sync is provided by the Better Bear MCP server (better-bear). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policies on Better Bear

Open source. One binary. Zero dependencies.

npx -y @policylayer/intercept
github.com/policylayer/intercept →
// GET IN TOUCH

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