About
Who watches the watchers?
Quis custodiet ipsos custodes? — the question that started everything. Your AI voice agents were being monitored by nobody. We decided to change that.
The problem
AI voice ops was a black box
Teams running voice AI at scale — on Twilio, ElevenLabs, Genesys, Vapi — were flying blind. When a call failed, nobody knew why. When costs spiked, nobody could trace it. When an AI agent said something wrong, there was no record of the full chain of events.
Existing observability tools were built for traditional software, not for voice AI. They required code changes, custom SDKs, and data engineering work just to get started. By the time you had answers, the incident had already cost you customers.
The solution
A detective that speaks voice AI
We built the tool we wished existed. An AI investigator that lives inside Slack — where your team already works — and connects to your voice providers in minutes, no code required.
Ask it anything in plain English. “Why did calls drop between 2pm and 4pm yesterday?” “Which agent had the highest cost per conversation last week?” Sherlock gathers the evidence, correlates events across providers, and delivers a sourced answer in under 5 seconds.
The character
Why Sherlock Holmes?
Because the world’s greatest detective never guesses. He follows the evidence wherever it leads — even if it’s uncomfortable. That’s exactly how we believe voice operations should be run.
Sherlock Calls will tell you the truth about your AI voice operations, even if it hurts. A failing agent, a runaway cost centre, a provider misconfiguration — the case will be solved. Every time.
“The world is full of obvious things which nobody by any chance ever observes.”
— Sherlock Holmes, The Hound of the Baskervilles
We built Sherlock Calls to observe the things your team keeps missing.
The team
Operators building for operators
We are a small team of six — engineers, product people, and go-to-market operators — based in Madrid, Spain. We’ve run voice AI deployments ourselves. We know how painful it is to have no visibility.
We’re backed by Target Global, one of Europe’s leading early-stage venture funds. That gives us the runway to focus on what matters: solving the observability problem for voice AI teams everywhere.
Our principles
How we build
Truth, even if it hurts
We don't sugarcoat findings. If your AI agent is failing 30% of calls, Sherlock will tell you — and show you why.
Zero friction to value
No credit card required. No sales call. No SDK. Connect your first provider and get answers in under 2 minutes.
Slack-first, always
Observability that requires a new dashboard is observability that gets ignored. Sherlock lives where your team already works.
Privacy by design
We don't store call audio or raw transcripts on our servers beyond what's needed to answer your question. Your call data stays yours.
30+
Provider integrations
5s
Avg. time to answer
2 min
Setup time
2025
Founded in Madrid
Ready to stop guessing?
Join the teams that switched from dashboard-surfing to detective-work. Free to start — 100 credits, no credit card.