Add CreateJwt MCP tool for Dev Proxy jwt create command

src/createJwt.ts

@@ -0,0 +1,65 @@
+import { execFile, ExecFileException } from 'child_process';
+
+interface CreateJwtOptions {
+  name?: string;
+  issuer?: string;
+  audiences?: string[];
+  roles?: string[];
+  scopes?: string[];
+  claims?: string[];
+  validFor?: number;
+  signingKey?: string;
+}
+
+export const createJwt = async (options: CreateJwtOptions): Promise<string> => {
+  const args: string[] = ['jwt', 'create'];
+
+  if (options.name) {
+    args.push('--name', options.name);
+  }
+  if (options.issuer) {
+    args.push('--issuer', options.issuer);
+  }
+  if (options.audiences) {
+    for (const audience of options.audiences) {
+      args.push('--audiences', audience);
+    }
+  }
+  if (options.roles) {
+    for (const role of options.roles) {
+      args.push('--roles', role);
+    }
+  }
+  if (options.scopes) {
+    for (const scope of options.scopes) {
+      args.push('--scopes', scope);
+    }
+  }
+  if (options.claims) {
+    for (const claim of options.claims) {
+      args.push('--claims', claim);
+    }
+  }
+  if (options.validFor !== undefined) {
+    args.push('--valid-for', options.validFor.toString());
+  }
+  if (options.signingKey) {
+    args.push('--signing-key', options.signingKey);
+  }
+
+  return new Promise<string>((resolve, reject) => {
+    execFile('devproxy', args, (error: ExecFileException | null, stdout: string, stderr: string) => {
+      if (error) {
+        reject(`Error creating JWT: ${error.message}`);
+        return;
+      }
+
+      if (stderr) {
+        reject(`Error creating JWT: ${stderr}`);
+        return;
+      }
+
+      resolve(stdout.trim());
+    });
+  });
+};

src/index.ts

@@ -4,6 +4,7 @@ import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js';
 import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
 import { createRequire } from 'module';
 import { z } from 'zod';
+import { createJwt } from './createJwt.js';
 import { findDocs } from './findDocs.js';
 import { getVersion } from './getVersion.js';
 import { getBestPractices } from './getBestPractices.js';
@@ -47,5 +48,24 @@ server.tool('GetVersion', 'Gets the currently installed Dev Proxy version',
   })
 );
 
+server.tool('CreateJwt', 'Creates a JSON Web Token (JWT) using the Dev Proxy jwt create command. Returns the generated token.',
+  {
+    name: z.string().optional().describe('The name of the user to create the token for'),
+    issuer: z.string().optional().describe('The token issuer'),
+    audiences: z.array(z.string()).optional().describe('The audiences for the token'),
+    roles: z.array(z.string()).optional().describe('The roles to include in the token'),
+    scopes: z.array(z.string()).optional().describe('The scopes to include in the token'),
+    claims: z.array(z.string()).optional().describe('Custom claims to include in the token in the format name:value'),
+    validFor: z.number().optional().describe('The token validity in minutes'),
+    signingKey: z.string().optional().describe('The signing key for the token. Must be at least 32 characters'),
+  },
+  {
+    title: 'Create JWT',
+  },
+  async ({ name, issuer, audiences, roles, scopes, claims, validFor, signingKey }) => ({
+    content: [{ type: 'text', text: await createJwt({ name, issuer, audiences, roles, scopes, claims, validFor, signingKey }) }]
+  })
+);
+
 const transport = new StdioServerTransport();
 await server.connect(transport);