Backstage MCP Server

export const examples = { title: "Backstage Examples and Code Samples", description: "Practical examples for common Backstage development scenarios", content: { pluginExamples: { basicFrontendPlugin: { description: "Simple frontend plugin with a custom page", code: ` // src/plugin.ts import { createPlugin, createRoutableExtension } from '@backstage/core-plugin-api'; import { rootRouteRef } from './routes'; export const myPlugin = createPlugin({ id: 'my-plugin', routes: { root: rootRouteRef, }, }); export const MyPluginPage = myPlugin.provide( createRoutableExtension({ name: 'MyPluginPage', component: () => import('./components/MyPluginPage').then(m => m.MyPluginPage), mountPoint: rootRouteRef, }), ); // src/components/MyPluginPage.tsx import React from 'react'; import { Page, Header, Content } from '@backstage/core-components'; export const MyPluginPage = () => ( <Page themeId="tool"> <Header title="My Plugin" subtitle="Custom plugin example" /> <Content> <div>Welcome to my custom plugin!</div> </Content> </Page> );` }, catalogEntityProvider: { description: "Custom entity provider for external data sources", code: ` // src/providers/MyEntityProvider.ts import { EntityProvider, EntityProviderConnection } from '@backstage/plugin-catalog-backend'; import { Entity } from '@backstage/catalog-model'; export class MyEntityProvider implements EntityProvider { private readonly env: string; private connection?: EntityProviderConnection; constructor(env: string) { this.env = env; } getProviderName(): string { return \`my-provider-\${this.env}\`; } async connect(connection: EntityProviderConnection): Promise<void> { this.connection = connection; await this.run(); } async run(): Promise<void> { if (!this.connection) { throw new Error('Not initialized'); } const entities = await this.fetchEntities(); await this.connection.applyMutation({ type: 'full', entities: entities.map(entity => ({ locationKey: this.getProviderName(), entity, })), }); } private async fetchEntities(): Promise<Entity[]> { // Fetch from external API return [ { apiVersion: 'backstage.io/v1alpha1', kind: 'Component', metadata: { name: 'my-service', namespace: 'default', }, spec: { type: 'service', lifecycle: 'production', owner: 'team-a', }, }, ]; } }` }, scaffolderAction: { description: "Custom scaffolder action for code generation", code: ` // src/actions/myAction.ts import { createTemplateAction } from '@backstage/plugin-scaffolder-backend'; import { z } from 'zod'; export const createMyAction = () => { return createTemplateAction<{ name: string; description?: string; }>({ id: 'my:custom:action', description: 'Creates a custom file', schema: { input: z.object({ name: z.string().describe('Name of the component'), description: z.string().optional().describe('Description'), }), }, async handler(ctx) { const { name, description } = ctx.input; await ctx.output('logs', \`Creating component: \${name}\`); const content = \` # \${name} \${description || 'No description provided'} Generated by custom scaffolder action. \`; await ctx.output('file', { path: \`\${name}/README.md\`, content, }); }, }); };` } }, catalogExamples: { componentEntity: { description: "Example component entity YAML", code: ` apiVersion: backstage.io/v1alpha1 kind: Component metadata: name: my-service description: A microservice for user management annotations: github.com/project-slug: myorg/my-service backstage.io/techdocs-ref: dir:. tags: - nodejs - microservice - api links: - url: https://my-service.example.com title: Production icon: web - url: https://grafana.example.com/dashboard/my-service title: Monitoring icon: dashboard spec: type: service lifecycle: production owner: team-backend system: user-management providesApis: - user-api consumesApis: - auth-api dependsOn: - resource:user-database` }, systemEntity: { description: "Example system entity YAML", code: ` apiVersion: backstage.io/v1alpha1 kind: System metadata: name: user-management description: User management system spec: owner: team-backend domain: authentication` }, apiEntity: { description: "Example API entity YAML", code: ` apiVersion: backstage.io/v1alpha1 kind: API metadata: name: user-api description: User management API spec: type: openapi lifecycle: production owner: team-backend system: user-management definition: | openapi: 3.0.0 info: title: User API version: 1.0.0 paths: /users: get: summary: List users responses: '200': description: Successful response` } }, templateExamples: { basicTemplate: { description: "Basic software template structure", code: ` # template.yaml apiVersion: scaffolder.backstage.io/v1beta3 kind: Template metadata: name: nodejs-service title: Node.js Service description: Create a new Node.js microservice tags: - recommended - nodejs spec: owner: platform-team type: service parameters: - title: Fill in some steps required: - name - description properties: name: title: Name type: string description: Unique name of the component pattern: '^([a-z0-9\\-])+$' description: title: Description type: string description: Help others understand what this service is for owner: title: Owner type: string description: Owner of the component ui:field: OwnerPicker ui:options: allowedKinds: - Group steps: - id: fetch-base name: Fetch Base action: fetch:template input: url: ./content values: name: \${{ parameters.name }} description: \${{ parameters.description }} owner: \${{ parameters.owner }} - id: publish name: Publish action: publish:github input: allowedHosts: ['github.com'] description: This is \${{ parameters.name }} repoUrl: \${{ parameters.repoUrl }} - id: register name: Register action: catalog:register input: repoContentsUrl: \${{ steps.publish.output.repoContentsUrl }} catalogInfoPath: '/catalog-info.yaml' output: links: - title: Repository url: \${{ steps.publish.output.remoteUrl }} - title: Open in catalog icon: catalog entityRef: \${{ steps.register.output.entityRef }}` } }, configExamples: { appConfig: { description: "Basic app-config.yaml setup", code: ` app: title: My Backstage App baseUrl: http://localhost:3000 organization: name: My Company backend: baseUrl: http://localhost:7007 listen: port: 7007 csp: connect-src: ["'self'", 'http:', 'https:'] cors: origin: http://localhost:3000 methods: [GET, POST, PUT, DELETE] credentials: true database: client: pg connection: host: \${POSTGRES_HOST} port: \${POSTGRES_PORT} user: \${POSTGRES_USER} password: \${POSTGRES_PASSWORD} integrations: github: - host: github.com token: \${GITHUB_TOKEN} catalog: rules: - allow: [Component, System, API, Resource, Location] locations: - type: file target: ../../examples/entities.yaml - type: file target: ../../examples/template/template.yaml rules: - allow: [Template] auth: providers: github: development: clientId: \${AUTH_GITHUB_CLIENT_ID} clientSecret: \${AUTH_GITHUB_CLIENT_SECRET} techdocs: builder: 'local' generator: runIn: 'local' publisher: type: 'local'` } } } }; 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