HRthroo

A first round that shows its work.

Year: 2026
Role: Product, design, engineering and the AI systems
Services: Product Development, AI Solutions
Website: hrthroo.com

HRthroo is Brandstac's second in-house product: recruitment software for recruitment agencies and in-house HR teams. The AI does the first round, and people make every decision.

The first round

Recruitment agencies drown in CVs, and screening calls eat recruiters' days. Reading every application and phoning every plausible candidate is where the week goes, and it is the part of hiring a person can least afford to rush.

HRthroo: cream headphones with a blue coiled cable, on pink

Auditable by design

Brandstac built that first round to be auditable: every AI judgement quotes its source. For each job the AI proposes must-have and nice-to-have criteria, and the recruiter approves them before anything is screened. Every CV is then checked against them, with a quote from the CV for each one. Claims the CV can't support are marked "insufficient evidence". The AI never rejects anyone.

Consent and disclosure are built in, not settings. Calls go only to candidates who agreed. The AI says it is an AI and that the call is recorded, and it stops when the candidate says "stop". Through the Business Brain, only facts the agency has verified are ever said to candidates.

HRthroo: a magnifying glass on a stack of white paper with a blue tab, on pink

Eighteen languages, in daylight

The voice agent runs AI phone screens and AI video interviews as live conversations in 18 languages: English, Spanish, French, German, Portuguese, Italian, Dutch, Hindi and nine more Indian languages. Calls go out from the agency's own phone number, and only between 10:00 and 19:00 in the candidate's own time zone.

The recruiter gets the recording, the transcript, each answer and a summary with quoted evidence.

Shortlists and Throo

Client shortlist links expire, can be revoked, log every open and collect the client's feedback. Throo, the assistant, sets up jobs and finds candidates from a chat, and is also available inside Claude, ChatGPT or Cursor through an MCP connector. Anything that contacts a candidate needs a person's confirmation.

Privacy

Data is stored in Mumbai, the product is built for India's DPDP Act, and candidate data is never used to train AI models.

The stack

Next.js and TypeScript, Postgres on Supabase in Mumbai, hosted on Vercel. Real-time calling runs on LiveKit with a Python voice agent. Speech comes from Sarvam AI for Indian languages and from Deepgram and Cartesia for the others. Models are reached through OpenRouter, and payments run on Razorpay.

Why it matters

HRthroo is Brandstac's second full product, beside FollowThroo, and proof that the studio builds and runs AI products end to end: product, design, engineering and the AI systems underneath.