Sync qualifying Bear notes to the local context library. Adds new notes, updates changed notes, and removes notes that no longer qualify (tag removed, trashed, etc.). Regenerates the index. Only touches the bear/ directory — external/ and inbox/ are untouched. Call this when the user asks to sync...
Part of the Better Bear MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents use bear_context_sync to create or modify resources in Better Bear. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call bear_context_sync repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Better Bear.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
tools:
bear_context_sync:
rules:
- action: allow
rate_limit:
max: 30
window: 60See the full Better Bear policy for all 34 tools.
Agents calling write-class tools like bear_context_sync have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.
Sync qualifying Bear notes to the local context library. Adds new notes, updates changed notes, and removes notes that no longer qualify (tag removed, trashed, etc.). Regenerates the index. Only touches the bear/ directory — external/ and inbox/ are untouched. Call this when the user asks to sync, refresh, or update their context.. It is categorised as a Write tool in the Better Bear MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Add a rule in your Intercept YAML policy under the tools section for bear_context_sync. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Better Bear MCP server.
bear_context_sync 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 bear_context_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.
Set action: deny in the Intercept policy for bear_context_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.
bear_context_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.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept