Updated MCP Learning Plan\n\n- Learn MCP core concepts\n- Build a server with tools\n- Connect to Claude\n- Create amazing AI experiences
AI agents use update-todo to create or update resources in Todo List MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Todo List MCP Server environment.
The tool performs a write operation by updating todo items. It is reversible (can be updated again or reverted), so it does not qualify as Destructive. The severity is medium because while this could modify user data, updates are non-destructive and limited to a single todo item's scope.
From the tool's definition Tool name is 'update-todo' which modifies existing todo items. The description appears to be placeholder/corrupted content (showing a learning plan instead of actual tool documentation), but the name and context of a todo management system clearly indicate…
Documented attack patterns abuse exactly the kind of access update-todo gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Todo List MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for update-todo:
{
"version": "1",
"default": "deny",
"tools": {
"update-todo": {
"limits": [
{
"counter": "update-todo_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}update-todo 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.
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Updated MCP Learning Plan\n\n- Learn MCP core concepts\n- Build a server with tools\n- Connect to Claude\n- Create amazing AI experiences. It is categorised as a Write tool in the Todo List MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Todo List MCP Server MCP server in PolicyLayer and add a rule for update-todo: 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 Todo List MCP Server. Nothing to install.
update-todo 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 update-todo 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 update-todo. 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.
update-todo is provided by the Todo List MCP Server MCP server (regibyte/todo-list-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 10 Todo List MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
10 Todo List MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.