nodebench.notebook_append
Append reviewed text into a NodeBench report notebook through the same Convex-backed report notebook persistence used by the web UI.
This record as markdown: /tools/io-github-homenshum-nodebench/nodebench.notebook-append.md
What nodebench.notebook_append does on Nodebench
AI agents use nodebench.notebook_append to create or update resources in Nodebench, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Nodebench environment.
Why nodebench.notebook_append is rated Medium
This tool writes/appends data to a persistent report notebook. It creates or modifies data in a reversible way (text can be removed or overwritten), making it a Write operation. The blast radius is medium since it modifies shared report notebooks that others may rely on.
From the tool's definition Append reviewed text into a NodeBench report notebook
Attacks that exploit this kind of access
The rule that runs nodebench.notebook_append safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Nodebench, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For nodebench.notebook_append, this is the rule to start with:
nodebench.notebook_append stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Nodebench, apply this rule, and every nodebench.notebook_append call is checked against it from then on.
Questions about nodebench.notebook_append
Append reviewed text into a NodeBench report notebook through the same Convex-backed report notebook persistence used by the web UI. It is categorised as a Write tool in the Nodebench MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Nodebench MCP server in PolicyLayer and add a rule for nodebench.notebook_append: 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 Nodebench. Nothing to install.
nodebench.notebook_append 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 nodebench.notebook_append 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 nodebench.notebook_append. 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.
nodebench.notebook_append is provided by the Nodebench MCP server (nodebench-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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