Sets a custom title on a tab, window, group, or folder node. Trimmed; max 200 chars. Sets customTitle=true so the title persists across browser restarts.
AI agents use set_title to create or update resources in Pinako AI Bridge — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Pinako AI Bridge environment.
This tool modifies metadata (custom titles) on existing browser entities, which is a reversible write operation. It does not delete data, execute code, move money, or trigger external operations. The impact is limited to relabeling organizational elements within the Pinako extension. Severity is low because the change is cosmetic, metadata-only, and easily reverted by setting a different title.
From the tool's definition Sets a custom title on a tab, window, group, or folder node. Trimmed; max 200 chars. Sets customTitle=true so the title persists across browser restarts.
Attacks that exploit this kind of access
Sets a custom title on a tab, window, group, or folder node. Trimmed; max 200 chars. Sets customTitle=true so the title persists across browser restarts. It is categorised as a Write tool in the Pinako AI Bridge MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Pinako AI Bridge MCP server in PolicyLayer and add a rule for set_title: 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 Pinako AI Bridge. Nothing to install.
set_title 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 set_title 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 set_title. 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.
set_title is provided by the Pinako AI Bridge MCP server (teleomorph/pinako-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.
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