Take free-text input and route to the right table. By default returns a routing suggestion (commit=false). With commit=true, performs the insert. Routes journal, shopping items, reading list, content queue, contacts to call back, and gift ideas.
AI agents use quick_capture to create or update resources in Personal Brain — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Personal Brain environment.
The tool creates new database records by inserting data into various tables. By default it only suggests a route (read-like), but with commit=true it performs actual writes. Since the tool's purpose and most severe action is inserting/creating data, it falls under Write.
From the tool's definition 'With commit=true, performs the insert. Routes journal, shopping items, reading list, content queue, contacts to call back, and gift ideas.'
Attacks that exploit this kind of access
Take free-text input and route to the right table. By default returns a routing suggestion (commit=false). With commit=true, performs the insert. Routes journal, shopping items, reading list, content queue, contacts to call back, and gift ideas. It is categorised as a Write tool in the Personal Brain MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Personal Brain MCP server in PolicyLayer and add a rule for quick_capture: 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 Personal Brain. Nothing to install.
quick_capture 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 quick_capture 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 quick_capture. 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.
quick_capture is provided by the Personal Brain MCP server (phantomts/personal-brain-mcp). 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.
Teams ship this data inside their own products. See what a licence covers →