Index Cursor agent transcripts into the brain as searchable work history. Reads JSONL transcripts from the configured transcripts directory and stores each session as a memory with source=
AI agents use index_cursor_chats to create or update resources in Open Brain MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Open Brain MCP Server environment.
This tool reads existing transcript files and writes/stores them as new memory entries in the knowledge base. It creates new data (memory records) in a reversible manner — entries could be removed via the 'forget' sibling tool. No code execution, deletion, or financial operations are involved. Severity is medium because it could ingest sensitive conversation history into a shared knowledge base.
From the tool's definition 'Index Cursor agent transcripts into the brain as searchable work history. Reads JSONL transcripts from the configured transcripts directory and stores each session as a memory'
Attacks that exploit this kind of access
Index Cursor agent transcripts into the brain as searchable work history. Reads JSONL transcripts from the configured transcripts directory and stores each session as a memory with source=. It is categorised as a Write tool in the Open Brain MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Open Brain MCP Server MCP server in PolicyLayer and add a rule for index_cursor_chats: 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 Open Brain MCP Server. Nothing to install.
index_cursor_chats 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 index_cursor_chats 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 index_cursor_chats. 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.
index_cursor_chats is provided by the Open Brain MCP Server MCP server (subwizzll/mcp-server). 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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