### Answer Boosted Keywords let you provide a customized list of keywords to bias the transcriber model, making specific words more likely to be transcribed correctly. [(1) ]() This is commonly used for names, brands, street names, or domain-specific terms. [(2) ]() How to use them: You can add boosted keywords when creating or updating a voice agent via the API:

javascript
import Retell from 'retell-sdk';
const client = new Retell({
  apiKey: 'YOUR_RETELL_API_KEY',
}) ;
const agentResponse = await client.agent.create({
  response_engine: { llm_id: 'llm_234sdertfsdsfsdf', type: 'retell-llm' },
  voice_id: '11labs-Adrian',
}) ;
console.log(agentResponse.agent_id) ;

[(3) ]() The

boosted_keywords

parameter accepts an array of strings (up to 100 keywords) : [(2) ]() [(1) ]()

json
["retell", "kroger"]

[(1) ]() Important limitations: - Boosted keywords (keyterm prompting) only work with monolingual language settings—they are not supported for multilingual mode. [(4) ]() - There have been reported issues with certain language codes like

es-419

and

pt-BR

. [(5) ]() Tips for better results: - If transcription issues persist due to background noise, try adjusting the [denoising mode setting]() . [(2) ]() - You can also set [transcription mode]() to be optimized for accuracy.

​ To learn more, see the sources I considered: [[1] List Voice Agents](https://docs.retellai.com/api-references/list-agents) [[2] Increase transcription accuracy](https://docs.retellai.com/reliability/wrong-transcript) [[3] Create Voice Agent](https://docs.retellai.com/api-references/create-agent) [[4] Boosted Keywords is broken?](https://discord.com/channels/1186424376300679209/1411220607961403504) [[5] HELP! No agents working in our account](https://discord.com/channels/1186424376300679209/1236367029670248639) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.