List Harry Potter characters (wizards, witches, and other figures). Optionally filter by Hogwarts house (Gryffindor, Slytherin, Hufflepuff, Ravenclaw) and/or a name substring.
AI agents call list_characters to retrieve information from Mcp Harrypotter without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
house | string | — | Hogwarts house: gryffindor, slytherin, hufflepuff, or ravenclaw. |
search | string | — | Case-insensitive name substring filter (client-side). |
Parameters from the server's own tool schema.
This tool queries and retrieves Harry Potter character data from an API with no side effects. Filtering by house or name substring are standard read-only query parameters. There is no capability to modify, delete, or execute operations. The blast radius of misuse is minimal—an agent cannot cause harm by retrieving character information.
From the tool's definition Tool description states 'List Harry Potter characters' with optional filtering by house and name substring. The verb 'list' and the retrieval-only nature (no creation, modification, or deletion of data) indicate a read operation.
Attacks that exploit this kind of access
List Harry Potter characters (wizards, witches, and other figures). Optionally filter by Hogwarts house (Gryffindor, Slytherin, Hufflepuff, Ravenclaw) and/or a name substring. It is categorised as a Read tool in the Mcp Harrypotter MCP Server, which means it retrieves data without modifying state.
list_characters accepts 2 parameters: house, search. The full parameter table on this page comes from the server's own tool schema.
Register the Mcp Harrypotter MCP server in PolicyLayer and add a rule for list_characters: 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 Harrypotter. Nothing to install.
list_characters 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 list_characters 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 list_characters. 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.
list_characters is provided by the Mcp Harrypotter MCP server (https://gateway.pipeworx.io/harrypotter/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 →