retellai-core-workflow-b

# Retell AI Core Workflow B ## Overview Manage phone calls: outbound campaigns, call transfers, recordings, and concurrent call handling. ## Prerequisites - Completed `retellai-core-workflow-a` ## Instructions ### Step 1: Outbound Call Campaign ```typescript const phoneNumbers = ['+14155551001', '+14155551002', '+14155551003']; for (const number of phoneNumbers) { try { const call = await retell.call.createPhoneCall({ from_number: process.env.RETELL_PHONE_NUMBER!, to_number: number, override_agent_id: agentId, metadata: { campaign: 'appointment-reminder', date: '2026-04-01' }, }); console.log(`Called ${number}: ${call.call_id}`); } catch (err) { console.error(`Failed to call ${number}: ${err.message}`); } // Rate limit: space calls apart await new Promise(r => setTimeout(r, 2000)); } ``` ### Step 2: List and Filter Calls ```typescript const calls = await retell.call.list({ sort_order: 'descending', limit: 20, }); for (const call of calls) { console.log(`${call.call_id}: ${call.call_status} — ${call.end_timestamp - call.start_timestamp}ms`); } ``` ### Step 3: Get Call Recording and Transcript ```typescript const callDetail = await retell.call.retrieve(callId); if (callDetail.recording_url) { console.log(`Recording: ${callDetail.recording_url}`); } if (callDetail.transcript) { console.log(`Transcript:\n${callDetail.transcript}`); } ``` ## Output - Outbound call campaign with rate limiting - Call listing with st...