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delete-project

Remove a project by ID from n8n workflows. Requires Enterprise license with project management enabled. Provide clientId and projectId as compact JSON.

Instructions

Delete a project by ID. NOTE: Requires n8n Enterprise license with project management features enabled. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`clientId`	Yes
`projectId`	Yes

Implementation Reference

src/index.ts:1195-1225 (handler)

MCP tool handler for 'delete-project' in the CallToolRequestSchema switch statement. Retrieves the N8nClient instance and calls deleteProject(projectId) on it.

case "delete-project": {
  const { clientId, projectId } = args as { clientId: string; projectId: string };
  const client = clients.get(clientId);
  if (!client) {
    return {
      content: [{
        type: "text",
        text: "Client not initialized. Please run init-n8n first.",
      }],
      isError: true
    };
  }

  try {
    await client.deleteProject(projectId);
    return {
      content: [{
        type: "text",
        text: `Successfully deleted project with ID: ${projectId}`,
      }]
    };
  } catch (error) {
    return {
      content: [{
        type: "text",
        text: error instanceof Error ? error.message : "Unknown error occurred",
      }],
      isError: true
    };
  }
}

src/index.ts:530-541 (schema)

Input schema definition for the 'delete-project' tool, listed in the ListToolsRequestSchema response.

{
  name: "delete-project",
  description: "Delete a project by ID. NOTE: Requires n8n Enterprise license with project management features enabled. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.",
  inputSchema: {
    type: "object",
    properties: {
      clientId: { type: "string" },
      projectId: { type: "string" }
    },
    required: ["clientId", "projectId"]
  }
},

src/index.ts:216-220 (helper)

N8nClient method that performs the actual DELETE request to /projects/{projectId} via makeRequest.

async deleteProject(projectId: string): Promise<void> {
  return this.makeRequest<void>(`/projects/${projectId}`, {
    method: 'DELETE',
  });
}

src/index.ts:397-851 (registration)

Registration of all tools including 'delete-project' via server.setRequestHandler(ListToolsRequestSchema)

server.setRequestHandler(ListToolsRequestSchema, async () => {
  return {
    tools: [
      {
        name: "init-n8n",
        description: "Initialize connection to n8n instance. Use this tool whenever an n8n URL and API key are shared to establish the connection. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.",
        inputSchema: {
          type: "object",
          properties: {
            url: { type: "string" },
            apiKey: { type: "string" }
          },
          required: ["url", "apiKey"]
        }
      },
      {
        name: "list-workflows",
        description: "List all workflows from n8n. Use after init-n8n to see available workflows. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" }
          },
          required: ["clientId"]
        }
      },
      {
        name: "get-workflow",
        description: "Retrieve a workflow by ID. Use after list-workflows to get detailed information about a specific workflow. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            id: { type: "string" }
          },
          required: ["clientId", "id"]
        }
      },
      {
        name: "create-workflow",
        description: "Create a new workflow in n8n. Use to set up a new workflow with optional nodes and connections. IMPORTANT: 1) Arguments must be provided as compact, single-line JSON without whitespace or newlines. 2) Must provide full workflow structure including nodes and connections arrays, even if empty. The 'active' property should not be included as it is read-only.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            name: { type: "string" },
            nodes: { type: "array" },
            connections: { type: "object" }
          },
          required: ["clientId", "name"]
        }
      },
      {
        name: "update-workflow",
        description: "Update an existing workflow in n8n. Use after get-workflow to modify a workflow's properties, nodes, or connections. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            id: { type: "string" },
            workflow: {
              type: "object",
              properties: {
                name: { type: "string" },
                active: { type: "boolean" },
                nodes: { type: "array" },
                connections: { type: "object" },
                settings: { type: "object" }
              }
            }
          },
          required: ["clientId", "id", "workflow"]
        }
      },
      {
        name: "delete-workflow",
        description: "Delete a workflow by ID. This action cannot be undone. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            id: { type: "string" }
          },
          required: ["clientId", "id"]
        }
      },
      {
        name: "activate-workflow",
        description: "Activate a workflow by ID. This will enable the workflow to run. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            id: { type: "string" }
          },
          required: ["clientId", "id"]
        }
      },
      {
        name: "deactivate-workflow",
        description: "Deactivate a workflow by ID. This will prevent the workflow from running. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            id: { type: "string" }
          },
          required: ["clientId", "id"]
        }
      },
      {
        name: "list-projects",
        description: "List all projects from n8n. NOTE: Requires n8n Enterprise license with project management features enabled. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" }
          },
          required: ["clientId"]
        }
      },
      {
        name: "create-project",
        description: "Create a new project in n8n. NOTE: Requires n8n Enterprise license with project management features enabled. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            name: { type: "string" }
          },
          required: ["clientId", "name"]
        }
      },
      {
        name: "delete-project",
        description: "Delete a project by ID. NOTE: Requires n8n Enterprise license with project management features enabled. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            projectId: { type: "string" }
          },
          required: ["clientId", "projectId"]
        }
      },
      {
        name: "update-project",
        description: "Update a project's name. NOTE: Requires n8n Enterprise license with project management features enabled. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            projectId: { type: "string" },
            name: { type: "string" }
          },
          required: ["clientId", "projectId", "name"]
        }
      },
      {
        name: "list-users",
        description: "Retrieve all users from your instance. Only available for the instance owner.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" }
          },
          required: ["clientId"]
        }
      },
      {
        name: "create-users",
        description: "Create one or more users in your instance.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            users: {
              type: "array",
              items: {
                type: "object",
                properties: {
                  email: { type: "string" },
                  role: { 
                    type: "string",
                    enum: ["global:admin", "global:member"]
                  }
                },
                required: ["email"]
              }
            }
          },
          required: ["clientId", "users"]
        }
      },
      {
        name: "get-user",
        description: "Get user by ID or email address.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            idOrEmail: { type: "string" }
          },
          required: ["clientId", "idOrEmail"]
        }
      },
      {
        name: "delete-user",
        description: "Delete a user from your instance.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            idOrEmail: { type: "string" }
          },
          required: ["clientId", "idOrEmail"]
        }
      },
      {
        name: "list-variables",
        description: "List all variables from n8n. NOTE: Requires n8n Enterprise license with variable management features enabled. Use after init-n8n to see available variables. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" }
          },
          required: ["clientId"]
        }
      },
      {
        name: "create-variable",
        description: "Create a new variable in n8n. NOTE: Requires n8n Enterprise license with variable management features enabled. Variables can be used across workflows to store and share data. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            key: { type: "string" },
            value: { type: "string" }
          },
          required: ["clientId", "key", "value"]
        }
      },
      {
        name: "delete-variable",
        description: "Delete a variable by ID. NOTE: Requires n8n Enterprise license with variable management features enabled. Use after list-variables to get the ID of the variable to delete. This action cannot be undone. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            id: { type: "string" }
          },
          required: ["clientId", "id"]
        }
      },
      {
        name: "create-credential",
        description: "Create a credential that can be used by nodes of the specified type. The credential type name can be found in the n8n UI when creating credentials (e.g., 'cloudflareApi', 'githubApi', 'slackOAuth2Api'). Use get-credential-schema first to see what fields are required for the credential type you want to create.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            name: { type: "string" },
            type: { type: "string" },
            data: { type: "object" }
          },
          required: ["clientId", "name", "type", "data"]
        }
      },
      {
        name: "delete-credential",
        description: "Delete a credential by ID. You must be the owner of the credentials.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            id: { type: "string" }
          },
          required: ["clientId", "id"]
        }
      },
      {
        name: "get-credential-schema",
        description: "Show credential data schema for a specific credential type. The credential type name can be found in the n8n UI when creating credentials (e.g., 'cloudflareApi', 'githubApi', 'slackOAuth2Api'). This will show you what fields are required for creating credentials of this type.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            credentialTypeName: { type: "string" }
          },
          required: ["clientId", "credentialTypeName"]
        }
      },
      // Execution Management Tools
      {
        name: "list-executions",
        description: "Retrieve all executions from your instance with optional filtering.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            includeData: { type: "boolean" },
            status: { 
              type: "string",
              enum: ["error", "success", "waiting"]
            },
            workflowId: { type: "string" },
            limit: { type: "number" }
          },
          required: ["clientId"]
        }
      },
      {
        name: "get-execution",
        description: "Retrieve a specific execution by ID.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            id: { type: "number" },
            includeData: { type: "boolean" }
          },
          required: ["clientId", "id"]
        }
      },
      {
        name: "delete-execution",
        description: "Delete a specific execution by ID.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            id: { type: "number" }
          },
          required: ["clientId", "id"]
        }
      },
      // Tag Management Tools
      {
        name: "create-tag",
        description: "Create a new tag in your instance.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            name: { type: "string" }
          },
          required: ["clientId", "name"]
        }
      },
      {
        name: "list-tags",
        description: "Retrieve all tags from your instance.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            limit: { type: "number" }
          },
          required: ["clientId"]
        }
      },
      {
        name: "get-tag",
        description: "Retrieve a specific tag by ID.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            id: { type: "string" }
          },
          required: ["clientId", "id"]
        }
      },
      {
        name: "update-tag",
        description: "Update a tag's name.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            id: { type: "string" },
            name: { type: "string" }
          },
          required: ["clientId", "id", "name"]
        }
      },
      {
        name: "delete-tag",
        description: "Delete a tag by ID.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            id: { type: "string" }
          },
          required: ["clientId", "id"]
        }
      },
      {
        name: "get-workflow-tags",
        description: "Get tags associated with a workflow.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            workflowId: { type: "string" }
          },
          required: ["clientId", "workflowId"]
        }
      },
      {
        name: "update-workflow-tags",
        description: "Update tags associated with a workflow.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            workflowId: { type: "string" },
            tagIds: {
              type: "array",
              items: {
                type: "object",
                properties: {
                  id: { type: "string" }
                },
                required: ["id"]
              }
            }
          },
          required: ["clientId", "workflowId", "tagIds"]
        }
      },
      // Security Audit Tool
      {
        name: "generate-audit",
        description: "Generate a security audit for your n8n instance.",
        inputSchema: {
          type: "object",
          properties: {
            clientId: { type: "string" },
            daysAbandonedWorkflow: { type: "number" },
            categories: {
              type: "array",
              items: {
                type: "string",
                enum: ["credentials", "database", "nodes", "filesystem", "instance"]
              }
            }
          },
          required: ["clientId"]
        }
      }
    ]
  };
});

src/index.ts:854-1967 (handler)

Overall CallToolRequestSchema handler that routes to specific tool cases including 'delete-project'

server.setRequestHandler(CallToolRequestSchema, async (request) => {
  const { name, arguments: args } = request.params;

  switch (name) {
    case "init-n8n": {
      const { url, apiKey } = args as { url: string; apiKey: string };
      try {
        const client = new N8nClient(url, apiKey);
        
        // Test connection by listing workflows
        await client.listWorkflows();
        
        // Generate a unique client ID
        const clientId = Buffer.from(url).toString('base64');
        clients.set(clientId, client);

        return {
          content: [{
            type: "text",
            text: `Successfully connected to n8n at ${url}. Use this client ID for future operations: ${clientId}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "list-workflows": {
      const { clientId } = args as { clientId: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const workflows = await client.listWorkflows();
        const formattedWorkflows = workflows.data.map(wf => ({
          id: wf.id,
          name: wf.name,
          active: wf.active,
          created: wf.createdAt,
          updated: wf.updatedAt,
          tags: wf.tags,
        }));

        return {
          content: [{
            type: "text",
            text: JSON.stringify(formattedWorkflows, null, 2),
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "get-workflow": {
      const { clientId, id } = args as { clientId: string; id: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const workflow = await client.getWorkflow(id);
        return {
          content: [{
            type: "text",
            text: JSON.stringify(workflow, null, 2),
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "update-workflow": {
      const { clientId, id, workflow } = args as {
        clientId: string;
        id: string;
        workflow: Partial<N8nWorkflow>;
      };

      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const updatedWorkflow = await client.updateWorkflow(id, workflow);
        return {
          content: [{
            type: "text",
            text: `Successfully updated workflow:\n${JSON.stringify(updatedWorkflow, null, 2)}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "create-workflow": {
      const { clientId, name, nodes = [], connections = {} } = args as {
        clientId: string;
        name: string;
        nodes?: any[];
        connections?: Record<string, any>;
      };

      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const workflow = await client.createWorkflow(name, nodes, connections);
        return {
          content: [{
            type: "text",
            text: `Successfully created workflow:\n${JSON.stringify(workflow, null, 2)}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "delete-workflow": {
      const { clientId, id } = args as { clientId: string; id: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const workflow = await client.deleteWorkflow(id);
        return {
          content: [{
            type: "text",
            text: `Successfully deleted workflow:\n${JSON.stringify(workflow, null, 2)}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "activate-workflow": {
      const { clientId, id } = args as { clientId: string; id: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const workflow = await client.activateWorkflow(id);
        return {
          content: [{
            type: "text",
            text: `Successfully activated workflow:\n${JSON.stringify(workflow, null, 2)}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "deactivate-workflow": {
      const { clientId, id } = args as { clientId: string; id: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const workflow = await client.deactivateWorkflow(id);
        return {
          content: [{
            type: "text",
            text: `Successfully deactivated workflow:\n${JSON.stringify(workflow, null, 2)}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "list-projects": {
      const { clientId } = args as { clientId: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const projects = await client.listProjects();
        return {
          content: [{
            type: "text",
            text: JSON.stringify(projects.data, null, 2),
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "create-project": {
      const { clientId, name } = args as { clientId: string; name: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        await client.createProject(name);
        return {
          content: [{
            type: "text",
            text: `Successfully created project: ${name}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "delete-project": {
      const { clientId, projectId } = args as { clientId: string; projectId: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        await client.deleteProject(projectId);
        return {
          content: [{
            type: "text",
            text: `Successfully deleted project with ID: ${projectId}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "update-project": {
      const { clientId, projectId, name } = args as { clientId: string; projectId: string; name: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        await client.updateProject(projectId, name);
        return {
          content: [{
            type: "text",
            text: `Successfully updated project ${projectId} with new name: ${name}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "list-users": {
      const { clientId } = args as { clientId: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const users = await client.listUsers();
        return {
          content: [{
            type: "text",
            text: JSON.stringify(users.data, null, 2),
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "create-users": {
      const { clientId, users } = args as { 
        clientId: string; 
        users: Array<{ 
          email: string; 
          role?: 'global:admin' | 'global:member'
        }> 
      };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const result = await client.createUsers(users);
        return {
          content: [{
            type: "text",
            text: JSON.stringify(result, null, 2),
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "get-user": {
      const { clientId, idOrEmail } = args as { clientId: string; idOrEmail: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const user = await client.getUser(idOrEmail);
        return {
          content: [{
            type: "text",
            text: JSON.stringify(user, null, 2),
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "delete-user": {
      const { clientId, idOrEmail } = args as { clientId: string; idOrEmail: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        await client.deleteUser(idOrEmail);
        return {
          content: [{
            type: "text",
            text: `Successfully deleted user: ${idOrEmail}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "list-variables": {
      const { clientId } = args as { clientId: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const variables = await client.listVariables();
        return {
          content: [{
            type: "text",
            text: JSON.stringify(variables.data, null, 2),
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "create-variable": {
      const { clientId, key, value } = args as { clientId: string; key: string; value: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        await client.createVariable(key, value);
        return {
          content: [{
            type: "text",
            text: `Successfully created variable with key: ${key}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "delete-variable": {
      const { clientId, id } = args as { clientId: string; id: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        await client.deleteVariable(id);
        return {
          content: [{
            type: "text",
            text: `Successfully deleted variable with ID: ${id}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "create-credential": {
      const { clientId, name, type, data } = args as {
        clientId: string;
        name: string;
        type: string;
        data: Record<string, any>;
      };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const credential = await client.createCredential(name, type, data);
        return {
          content: [{
            type: "text",
            text: `Successfully created credential:\n${JSON.stringify(credential, null, 2)}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "delete-credential": {
      const { clientId, id } = args as { clientId: string; id: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const result = await client.deleteCredential(id);
        return {
          content: [{
            type: "text",
            text: `Successfully deleted credential:\n${JSON.stringify(result, null, 2)}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "get-credential-schema": {
      const { clientId, credentialTypeName } = args as { clientId: string; credentialTypeName: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const schema = await client.getCredentialSchema(credentialTypeName);
        return {
          content: [{
            type: "text",
            text: JSON.stringify(schema, null, 2),
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    // Execution Management Handlers
    case "list-executions": {
      const { clientId, includeData, status, workflowId, limit } = args as {
        clientId: string;
        includeData?: boolean;
        status?: 'error' | 'success' | 'waiting';
        workflowId?: string;
        limit?: number;
      };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const executions = await client.getExecutions({ includeData, status, workflowId, limit });
        return {
          content: [{
            type: "text",
            text: JSON.stringify(executions.data, null, 2),
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "get-execution": {
      const { clientId, id, includeData } = args as { clientId: string; id: number; includeData?: boolean };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const execution = await client.getExecution(id, includeData);
        return {
          content: [{
            type: "text",
            text: JSON.stringify(execution, null, 2),
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "delete-execution": {
      const { clientId, id } = args as { clientId: string; id: number };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const execution = await client.deleteExecution(id);
        return {
          content: [{
            type: "text",
            text: `Successfully deleted execution:\n${JSON.stringify(execution, null, 2)}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    // Tag Management Handlers
    case "create-tag": {
      const { clientId, name } = args as { clientId: string; name: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const tag = await client.createTag(name);
        return {
          content: [{
            type: "text",
            text: `Successfully created tag:\n${JSON.stringify(tag, null, 2)}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "list-tags": {
      const { clientId, limit } = args as { clientId: string; limit?: number };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const tags = await client.getTags({ limit });
        return {
          content: [{
            type: "text",
            text: JSON.stringify(tags.data, null, 2),
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "get-tag": {
      const { clientId, id } = args as { clientId: string; id: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const tag = await client.getTag(id);
        return {
          content: [{
            type: "text",
            text: JSON.stringify(tag, null, 2),
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "update-tag": {
      const { clientId, id, name } = args as { clientId: string; id: string; name: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const tag = await client.updateTag(id, name);
        return {
          content: [{
            type: "text",
            text: `Successfully updated tag:\n${JSON.stringify(tag, null, 2)}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "delete-tag": {
      const { clientId, id } = args as { clientId: string; id: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const tag = await client.deleteTag(id);
        return {
          content: [{
            type: "text",
            text: `Successfully deleted tag:\n${JSON.stringify(tag, null, 2)}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "get-workflow-tags": {
      const { clientId, workflowId } = args as { clientId: string; workflowId: string };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const tags = await client.getWorkflowTags(workflowId);
        return {
          content: [{
            type: "text",
            text: JSON.stringify(tags, null, 2),
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "update-workflow-tags": {
      const { clientId, workflowId, tagIds } = args as {
        clientId: string;
        workflowId: string;
        tagIds: { id: string }[];
      };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const tags = await client.updateWorkflowTags(workflowId, tagIds);
        return {
          content: [{
            type: "text",
            text: `Successfully updated workflow tags:\n${JSON.stringify(tags, null, 2)}`,
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    case "generate-audit": {
      const { clientId, daysAbandonedWorkflow, categories } = args as {
        clientId: string;
        daysAbandonedWorkflow?: number;
        categories?: Array<'credentials' | 'database' | 'nodes' | 'filesystem' | 'instance'>;
      };
      const client = clients.get(clientId);
      if (!client) {
        return {
          content: [{
            type: "text",
            text: "Client not initialized. Please run init-n8n first.",
          }],
          isError: true
        };
      }

      try {
        const audit = await client.generateAudit({ daysAbandonedWorkflow, categories });
        return {
          content: [{
            type: "text",
            text: JSON.stringify(audit, null, 2),
          }]
        };
      } catch (error) {
        return {
          content: [{
            type: "text",
            text: error instanceof Error ? error.message : "Unknown error occurred",
          }],
          isError: true
        };
      }
    }

    default:
      return {
        content: [{
          type: "text",
          text: `Unknown tool: ${name}`,
        }],
        isError: true
      };
  }
});

Tool Definition Quality

B3.1/5.0

Behavior3/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It reveals that this is a destructive operation ('Delete'), mentions license requirements, and specifies input format constraints ('Arguments must be provided as compact, single-line JSON'). However, it doesn't describe what happens after deletion (e.g., irreversible, cascading effects), error conditions, or response format, leaving significant behavioral gaps.

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

Conciseness4/5

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

The description is appropriately sized with three sentences that each serve a purpose: stating the action, noting license requirements, and specifying input format. It's front-loaded with the core purpose. While efficient, the third sentence about JSON formatting could be slightly more concise.

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

Completeness2/5

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

For a destructive tool with no annotations, 0% schema coverage, and no output schema, the description is insufficiently complete. It lacks critical information: what 'Delete' entails (irreversible? cascading?), the meaning of parameters, error handling, and response format. The license and input format notes are helpful but don't compensate for these major gaps.

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

Parameters2/5

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

The schema description coverage is 0%, meaning neither parameter (clientId, projectId) is documented in the schema. The description mentions 'project by ID' which hints at projectId but doesn't explain clientId at all. It adds minimal semantic value beyond what the parameter names suggest, failing to compensate for the complete lack of schema documentation.

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

Purpose4/5

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

The description clearly states the action ('Delete') and resource ('a project by ID'), making the purpose immediately understandable. It distinguishes from siblings like 'delete-workflow' or 'delete-user' by specifying the project resource. However, it doesn't explicitly differentiate from 'delete-execution' or other deletion tools beyond the resource name.

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

Usage Guidelines3/5

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

The description provides some usage context by stating license requirements ('Requires n8n Enterprise license with project management features enabled'), which helps determine when the tool is available. However, it doesn't explicitly say when to use this tool versus alternatives like 'delete-workflow' or provide guidance on prerequisites beyond licensing.

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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