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gitCarrot

AWS Cognito MCP Server

by gitCarrot

delete_user

Remove a user account from AWS Cognito to manage authentication access and maintain user directory security.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Implementation Reference

  • Handler function that executes the delete_user tool logic: retrieves current Cognito user, verifies session, deletes the user using cognitoUser.deleteUser(), and returns success/error messages.
        async ({}) => {
            return new Promise((resolve, reject) => {
            const cognitoUser = userPool.getCurrentUser();
                if (!cognitoUser) {
                    resolve({
                        content: [
                            {
                                type: "text" as const,
                                text: "No user currently signed in",
                            }
                        ]
                    });
                    return;
                }
    
                cognitoUser.getSession((err: Error | null, _session: CognitoUserSession) => {
                    if (err) {
                        reject({
                            content: [
                                {
                                    type: "text" as const,
                                    text: `Error getting session: ${err.message}`,
                                }
                            ]
                        });
                        return;
                    }
    
                    const username = cognitoUser.getUsername();
                    cognitoUser.deleteUser((err, result) => {
                if (err) {
                            reject({
                                content: [
                                    {
                                        type: "text" as const,
                                        text: `Failed to delete user: ${err.message}`,
                                    },
                                    {
                                        type: "text" as const,
                                        text: `Error code: ${(err as any).code || 'Unknown'}`,
                                    }
                                ]
                            });
                            return;
                        }
    
                        resolve({
                            content: [
                                {
                                    type: "text" as const,
                                    text: "User deleted successfully",
                                },
                                {
                                    type: "text" as const,
                                    text: `Username: ${username}`,
                                },
                                {
                                    type: "text" as const,
                                    text: `Result: ${result}`,
                                },
                                {
                                    type: "text" as const,
                                    text: `Time: ${new Date().toISOString()}`,
                                }
                            ]
                        });
                    });
                });
            });
        }
    )
  • index.ts:711-786 (registration)
    Registration of the 'delete_user' tool via server.tool(), with empty input schema and inline handler function.
    server.tool(
        "delete_user",
        {
        },
        async ({}) => {
            return new Promise((resolve, reject) => {
            const cognitoUser = userPool.getCurrentUser();
                if (!cognitoUser) {
                    resolve({
                        content: [
                            {
                                type: "text" as const,
                                text: "No user currently signed in",
                            }
                        ]
                    });
                    return;
                }
    
                cognitoUser.getSession((err: Error | null, _session: CognitoUserSession) => {
                    if (err) {
                        reject({
                            content: [
                                {
                                    type: "text" as const,
                                    text: `Error getting session: ${err.message}`,
                                }
                            ]
                        });
                        return;
                    }
    
                    const username = cognitoUser.getUsername();
                    cognitoUser.deleteUser((err, result) => {
                if (err) {
                            reject({
                                content: [
                                    {
                                        type: "text" as const,
                                        text: `Failed to delete user: ${err.message}`,
                                    },
                                    {
                                        type: "text" as const,
                                        text: `Error code: ${(err as any).code || 'Unknown'}`,
                                    }
                                ]
                            });
                            return;
                        }
    
                        resolve({
                            content: [
                                {
                                    type: "text" as const,
                                    text: "User deleted successfully",
                                },
                                {
                                    type: "text" as const,
                                    text: `Username: ${username}`,
                                },
                                {
                                    type: "text" as const,
                                    text: `Result: ${result}`,
                                },
                                {
                                    type: "text" as const,
                                    text: `Time: ${new Date().toISOString()}`,
                                }
                            ]
                        });
                    });
                });
            });
        }
    )
  • Empty input schema for the delete_user tool (no parameters required).
    {
    },
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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