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OpenWhistle
Audio in. Structured intelligence out.
OpenWhistle turns voice conversations into structured JSON, Markdown reports, and downstream actions. Define an agent (sales, support, HR — or your own), drop an audio file, get keyed data back. Public API, marketplace, webhooks, EU-hosted. Free to start.
Hi Hunters! 👋 Rémi here, maker of OpenWhistle.
I built OpenWhistle because every team I've worked with — sales, support, HR — was leaving the same gap on the floor: voice conversations never become structured data. Notes get scribbled, CRMs stay empty, action items live in Slack DMs, and a week later nobody remembers what was agreed.
The fix shouldn't be "manually log every call". The fix is: define what you want to extract once, then drop the audio. The agent does the rest — transcribes (Mistral Voxtral or local Whisper), runs a hybrid extractor (deterministic rules first, LLM fills the gaps), and emits a JSON payload + a Markdown report keyed exactly on the fields you declared. Ready for your CRM, your ticket system, your Slack channel.
A few things I'm proud of:
Hybrid extraction. Most competitors are "throw the transcript at GPT and hope". We run regex + enum normalization + numeric coercion first, the LLM only fills the holes. Predictable cost, predictable latency, accuracy that scales with field difficulty.
AI schema drafter. You describe the data you want in plain English, Mistral medium-3.1 returns a strictly-validated plan in our dialect. Beats hand-writing JSON Schema. Live in the agent builder under the "AI" tab.
Three-stage STT resilience.
Public marketplace + share links. Flip an agent to public, anyone can install with one click. Or mint a signed share link with max_uses + TTL.
EU-hosted, EU-built, GDPR-native. No US-only LLM dependency.
Free to start (30 seconds of audio, no credit card)
I'll be camped on this thread all day — drop your toughest "but what about X" and I'll answer with code links. 🎙️
About OpenWhistle on Product Hunt
“Audio in. Structured intelligence out.”
OpenWhistle was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #98 on the daily leaderboard. OpenWhistle turns voice conversations into structured JSON, Markdown reports, and downstream actions. Define an agent (sales, support, HR — or your own), drop an audio file, get keyed data back. Public API, marketplace, webhooks, EU-hosted. Free to start.
On the analytics side, OpenWhistle competes within Productivity, SaaS and Artificial Intelligence — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how OpenWhistle performed against the three products that launched closest to it on the same day.
Who hunted OpenWhistle?
OpenWhistle was hunted by Rémi Pelloux. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of OpenWhistle including community comment highlights and product details, visit the product overview.
Rémi Pelloux