Genkit MCP

/** * Copyright 2025 Google LLC * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import { anthropic } from '@genkit-ai/anthropic'; import { genkit } from 'genkit'; const ai = genkit({ plugins: [anthropic()], }); /** * This flow demonstrates the error that occurs when trying to use text/plain * files as media. The plugin will throw a helpful error message guiding users * to use text content instead. * * Error message: "Unsupported media type: text/plain. Text files should be sent * as text content in the message, not as media. For example, use { text: '...' } * instead of { media: { url: '...', contentType: 'text/plain' } }" */ ai.defineFlow('stable-text-plain-error', async () => { try { await ai.generate({ model: anthropic.model('claude-sonnet-4-5'), messages: [ { role: 'user', content: [ { media: { url: 'data:text/plain;base64,SGVsbG8gV29ybGQ=', contentType: 'text/plain', }, }, ], }, ], }); return 'Unexpected: Should have thrown an error'; } catch (error: any) { return { error: error.message, note: 'This demonstrates the helpful error message for text/plain files', }; } }); /** * This flow demonstrates the correct way to send text content. * Instead of using media with text/plain, use the text field directly. */ ai.defineFlow('stable-text-plain-correct', async () => { // Read the text content (in a real app, you'd read from a file) const textContent = 'Hello World\n\nThis is a text file content.'; const { text } = await ai.generate({ model: anthropic.model('claude-sonnet-4-5'), messages: [ { role: 'user', content: [ { text: `Please summarize this text file content:\n\n${textContent}`, }, ], }, ], }); return text; });