CSTM-2 JavaScript / TypeScript SDK

Official client for the CareerStudioMax CSTM-2 API — 8 independent, career-native model families.

Install

npm install @careerstudiomax/cstm2

Quickstart

const { CSTM2Client } = require('@careerstudiomax/cstm2');
// or: import { CSTM2Client } from '@careerstudiomax/cstm2';

const client = new CSTM2Client('cstm_lm_your_key_here');

const { choices } = await client.careerlm.chat({
  messages: [{ role: 'user', content: 'Write a cover letter opener for a Senior PM role' }],
});
console.log(choices[0].message.content);

Streaming

chatStream is a sibling of chat, not nested under it:

await client.careerlm.chatStream(
  { messages: [{ role: 'user', content: 'Draft a resignation letter' }] },
  (event) => process.stdout.write(event.text || ''),
);

Every other streaming family follows the same shape — careeragent.runStream, careeragent.jobSearchStream, and careerwebapi.searchStream all take (request, onEvent) and resolve once the stream closes:

await client.careeragent.runStream(
  { task: 'Find 5 remote senior PM roles at Series B startups' },
  (event) => { if (event.type === 'text') process.stdout.write(event.text); },
);

Generate career documents

careerlm.generate was previously broken — the backend endpoint is SSE-only, but this method called it as a plain JSON request and threw a parse error on every real call. Fixed: it now streams internally and resolves with the full assembled text once done (pass a second onEvent argument for live token-by-token updates, exactly like chatStream):

const { text } = await client.careerlm.generate({
  type: 'cover-letter', // or 'cv-summary' | 'linkedin-about' | 'exec-bio'
  role: 'Senior Product Manager',
  company: 'Acme Inc',
  country: 'UK',
});
console.log(text);

Each model family needs its own key

A cstm_lm_* key only works on careerlm endpoints; a cstm_em_* key only works on careerembed, and so on. Generate one key per family you use at careerstudiomax.com/developer.

| Family | Client namespace | Key prefix | |---|---|---| | CareerLM | client.careerlm | cstm_lm_ | | CareerEmbed | client.careerembed | cstm_em_ | | CareerScore | client.careerscore | cstm_sc_ | | CareerAgent | client.careeragent | cstm_ag_ | | CareerVoice | client.careervoice | cstm_vc_ | | CareerVision | client.careervision | cstm_vi_ | | CareerVideo | client.careervideo | cstm_vd_ | | CareerWebAPI | client.careerwebapi | cstm_wb_ |

Errors

All errors throw CSTM2Error (message, code, status).

const { CSTM2Client, CSTM2Error } = require('@careerstudiomax/cstm2');
try {
  await client.careerembed.embed('some text');
} catch (e) {
  if (e instanceof CSTM2Error) console.error(e.code, e.status, e.message);
}

Full endpoint reference: careerstudiomax.com/developer