/**
* 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, z } from 'genkit';
const ai = genkit({
plugins: [
// Default all flows in this sample to the beta surface
anthropic({
apiVersion: 'beta',
cacheSystemPrompt: true,
apiKey: process.env.ANTHROPIC_API_KEY,
}),
],
});
const betaSonnet = anthropic.model('claude-sonnet-4-5', { apiVersion: 'beta' });
ai.defineFlow('anthropic-beta-generate-person-json', async () => {
const { text } = await ai.generate({
model: betaSonnet,
prompt:
'Generate a fictional person with a random name, random age, and random city.',
config: { temperature: 0.6 },
output: {
schema: z.object({
name: z.string(),
age: z.number(),
city: z.string(),
}),
format: 'json',
constrained: true,
},
});
return text;
});
ai.defineFlow(
'anthropic-beta-generate-person-json-stream',
async (_, { sendChunk }) => {
const { stream } = ai.generateStream({
model: betaSonnet,
prompt: [
{
text: 'Generate a fictional person with a random name, random age, and random city.',
},
],
config: { temperature: 0.6 },
output: {
schema: z.object({
name: z.string(),
age: z.number(),
city: z.string(),
}),
format: 'json',
},
});
const collected: any[] = [];
for await (const chunk of stream) {
if (chunk.text) {
collected.push(chunk.output);
sendChunk(chunk.output);
}
}
return collected.join('');
}
);
