Build an AI-Native App

1
import { Recursiv } from '@recursiv/sdk'
2
3
const r = new Recursiv()
4
const ORG_ID = process.env.RECURSIV_ORG_ID!
5
6
async function main() {
7
  // 1. Create a project (container for your infra)
8
  const { data: project } = await r.projects.create({
9
    name: 'my-app',
10
    organization_id: ORG_ID,
11
  })
12
  console.log('Project:', project.id)
13
14
  // 2. Provision a Postgres database
15
  const { data: db } = await r.databases.ensure({
16
    name: 'my-app-db',
17
    project_id: project.id,
18
  })
19
  const { data: creds } = await r.databases.getCredentials({
20
    project_id: project.id,
21
    name: 'my-app-db',
22
  })
23
  console.log('Database ready:', creds.connection_string)
24
25
  // 3. Run a migration in a sandbox
26
  await r.projects.createSandbox(project.id)
27
  await r.projects.executeCode(project.id, {
28
    code: `
29
      const { Client } = require('pg');
30
      const c = new Client({ connectionString: '${creds.connection_string}' });
31
      await c.connect();
32
      await c.query(\`
33
        CREATE TABLE IF NOT EXISTS items (
34
          id SERIAL PRIMARY KEY,
35
          name TEXT NOT NULL,
36
          category TEXT,
37
          created_at TIMESTAMPTZ DEFAULT NOW()
38
        )
39
      \`);
40
      console.log('Migration complete');
41
      await c.end();
42
    `,
43
    language: 'typescript',
44
  })
45
46
  // 4. Create an AI assistant
47
  const { data: agent } = await r.agents.create({
48
    name: 'App Assistant',
49
    username: 'assistant_' + Date.now(),
50
    model: 'anthropic/claude-sonnet-4',
51
    system_prompt: 'You help users manage their items. Be concise and helpful.',
52
    organization_id: ORG_ID,
53
  })
54
  console.log('Agent:', agent.id)
55
56
  // 5. Set up file storage
57
  const { data: bucket } = await r.storage.ensureBucket({
58
    name: 'app-uploads',
59
    project_id: project.id,
60
  })
61
  console.log('Storage bucket:', bucket.name)
62
63
  // 6. Stream a chat with the agent
64
  process.stdout.write('Agent: ')
65
  for await (const chunk of r.agents.chatStream(agent.id, {
66
    message: 'What kinds of items should I track?',
67
  })) {
68
    process.stdout.write(chunk.delta ?? '')
69
  }
70
  console.log()
71
}
72
73
main()