Get the context library index — a structured table of contents of all files (Bear notes, external files, inbox). Read this FIRST before answering questions from context. Use it to identify which files to fetch, rather than loading everything. Includes cache freshness metadata.
Bulk/mass operation — affects multiple targets
Part of the Better Bear MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents call bear_context_index to retrieve information from Better Bear without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though bear_context_index only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
tools:
bear_context_index:
rules:
- action: allowSee the full Better Bear policy for all 34 tools.
Agents calling read-class tools like bear_context_index have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Read risk category across the catalogue. The same policy patterns (rate-limit, allow) apply to each.
Get the context library index — a structured table of contents of all files (Bear notes, external files, inbox). Read this FIRST before answering questions from context. Use it to identify which files to fetch, rather than loading everything. Includes cache freshness metadata.. It is categorised as a Read tool in the Better Bear MCP Server, which means it retrieves data without modifying state.
Add a rule in your Intercept YAML policy under the tools section for bear_context_index. 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_index 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 bear_context_index 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_index. 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_index 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