Get the source code of a specific cell by index
AI agents call get_cell_source to retrieve information from MCP Jupyter Complete without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves/queries cell source code content from a Jupyter notebook without any side effects, modifications, or code execution. It is a pure read operation that presents no security risk beyond potential information disclosure.
From the tool's definition Tool name is 'get_cell_source' and description states it retrieves 'the source code of a specific cell by index' with no modification or execution indicated.
Attacks that exploit this kind of access
Get the source code of a specific cell by index. It is categorised as a Read tool in the MCP Jupyter Complete MCP Server, which means it retrieves data without modifying state.
Register the MCP Jupyter Complete MCP server in PolicyLayer and add a rule for get_cell_source: 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 MCP Jupyter Complete. Nothing to install.
get_cell_source 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 get_cell_source 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 get_cell_source. 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.
get_cell_source is provided by the MCP Jupyter Complete MCP server (tofunori/mcp-jupyter-complete). 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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