Sherlock knows.
Voice AI monitoring, call debugging & root cause analysis for Slack
Ask in Slack — case closed in under 5 seconds. Or ask nothing: Sherlock monitors 24/7 and posts the case file first.
Free to start · No credit card required
#call-operations3 membersWhy did 47 calls fail yesterday between 2-4pm?
Root Cause
Twilio trunk capacity limit exceeded. Peak concurrent calls hit 120 (limit: 100).
Failure Breakdown
| Error 31005 | Capacity exceeded | 38 calls |
| Error 31003 | Timeout | 6 calls |
| Error 31486 | Busy signal | 3 calls |
Timeline
- 14:12 — Concurrent calls cross 100 threshold
- 14:15 — First failure recorded (Error 31005)
- 15:48 — Peak: 120 concurrent, 12 failures/min
- 16:02 — Traffic normalizes, failures stop
3+ years in Voice AI showed us one critical tool was clearly missing.
This is the product we wish we always had.
Connects with your existing tools
Datadog
Google Analytics
Aircall
Amazon Connect
Gmail
Google Ads
Google Calendar
Google Custom Search
Google Drive
Google Search Console
Google Trends
Granola
Stripe
Microsoft Dynamics 365
…and more! (click here)DatadogGoogle AnalyticsAircallAmazon ConnectGmailGoogle AdsGoogle CalendarGoogle Custom SearchGoogle DriveGoogle Search ConsoleGoogle TrendsGranolaStripeMicrosoft Dynamics 365…and more! (click here)
Sherlock Calls
/ʃɜːr.lɒk kɔːlz/·noun·Operations Intelligence1.The Slack-native operational investigator for teams running production AI. Ask anything about your calls, campaigns, costs, or customers — Sherlock interrogates your entire stack and returns a sourced verdict in under 5 seconds. Connects to Twilio, ElevenLabs, HubSpot, Google Ads, and 20+ more. No dashboards. No code.
2.The consulting detective your operations never knew it needed. Ask and Sherlock deduces — not guesses — tracing evidence across providers, logs, and transcripts until the case is closed. But Sherlock doesn't wait to be asked: it watches your stack and posts the case file to your Slack before anyone knew there was a case to open.
“
The problem
Without Sherlock
When calls fail, evidence is scattered across Twilio, ElevenLabs, your CRM, and your webhooks — and most teams spend two to three hours piecing it together. Many failures go undetected until customers complain.
“You see, but you do not observe.”
— A Scandal in Bohemia
With Sherlock
<5s
From Slack question to sourced root-cause
20+
Providers investigated in a single question
24/7
Proactive alerts before your customers notice a problem
How it works
Three steps to your
AI call detective
@sherlock why did 15% of calls fail yesterday?
I traced 342 failed calls across Twilio and ElevenLabs. Root cause: a timeout in the SIP trunk between 18:00-21:00. Here's the full timeline:
342
Failures
3h
Window
SIP
Root cause
Connect Slack
Ask anything
Get answers
“Detection is, or ought to be, an exact science.”
— The Sign of Four
No more information silos
One question.
One channel.
The whole team investigates.
Sherlock's answer lands in the channel — the whole team sees it, anyone can follow up, and the thread becomes your shared case file. No switching tabs, no forwarding logs.
Alex · 10:42
@sherlock why did 15% of calls fail last night?
Sherlock · 10:42
Root cause confirmed: SIP timeout 18:00–21:00 UTC. 342 calls affected across Twilio + ElevenLabs. Carrier-side issue — no action needed on your infra. Full timeline attached.
Maria · 10:44
@sherlock any enterprise accounts in that window?
Rafael · 10:45
@sherlock cost impact? need it for post-mortem
Capabilities
Every answer your team needs — including the ones nobody asked.
Ask and Sherlock answers in seconds. Don't ask and Sherlock surfaces what you missed. 20+ providers, one Slack thread, zero dashboards.
Start free“To a great mind, nothing is little.”
— A Study in Scarlet
Ask Sherlock Calls about any call in Slack. Get details, status, duration, events, and errors from Twilio or Genesys in one question — it fetches everything automatically.
Search through ElevenLabs conversation transcripts right from Slack. Find specific moments, keywords, or patterns across hundreds of calls instantly.
Correlate call outcomes with ad campaigns. Ask "Which Google Ads campaign drove the most qualified calls this week?" and Sherlock Calls cross-references call data with Google Ads, Meta Ads, and Analytics.
Sherlock Calls connects to HubSpot to enrich call data with CRM context. Ask "What deal stage is the caller from +34 611...?" and get the full picture — calls, contacts, and pipeline in one answer. Salesforce and Dynamics 365 coming soon.
Ask "What did calls cost this week?" in Slack and get an instant breakdown by provider. Spot anomalies, track spending trends, and optimize per-call economics.
Sherlock Calls builds a unified timeline across Twilio, ElevenLabs, your CRM, and ad platforms. See the full journey — from ad click to call to deal closed — posted as a clean thread in Slack.
Works in Slack today, with WhatsApp, Telegram, and email coming soon. Connects to voice providers, CRMs, ad platforms, and analytics — each integration is a plugin.
The answer is always in your data
Most tools give you data. Sherlock gives you conclusions. A detective who traces every thread to its source — and never stops watching for new ones.
“There is nothing more deceptive than an obvious fact.”
— The Boscombe Valley Mystery
How Sherlock helped us
We deployed voice AI agents for 20+ enterprise clients before building Sherlock. These are three of the investigations that proved we needed a better tool.
15h/wk
Debug time saved
340+
Issues detected
99.2%
Uptime achieved
Catching 340+ Silent Call Failures During Student Enrollment Peaks
A leading EdTech platform's student support calls were silently failing during enrollment peaks — with no dashboard surfacing it. Sherlock traced the root cause in hours.
34%
Cost reduction
<2 min
Avg debug time
$12K
Monthly savings
Cutting Voice AI Costs 34% by Exposing Hidden Duplicate Calls
A leading digital mortgage broker's voice AI spend was climbing without explanation — Sherlock revealed duplicate calls and inefficient TTS usage draining their budget.
3x
Completion rate
48h
Time to insight
Zero
Manual reviews
Finding the 25-Second Prompt Killing 60% of Post-Sale Surveys
The country's #1 car marketplace had a 4% survey completion rate — Sherlock transcribed thousands of calls and found the exact prompt causing 60% of disconnects at the 25-second mark.
6
Agents unified
<5 min
Time to answer
20h
Hours freed/week
Unifying 6 AI Agent Teams into a Single Source of Truth
One of the country's largest real estate servicers ran 6 different AI voice agents with a separate dashboard for each. Sherlock became their single cross-agent source of truth in Slack.
40%
Fewer drop-offs
Real-time
Monitoring
2x
Activation rate
Pinpointing the Onboarding Question That Stalled 40% of New Users
A leading European SaaS company had a high onboarding call drop-off rate but no tooling to analyze what happened inside those conversations. Sherlock found the bottleneck in hours.
1.4K
Recovery calls/week
37s
Avg connected call
2%
Weekly lead recovery
Recovering Unreachable Leads by Tracing the Optimal Outreach Window
A major distance learning institution had thousands of leads marked unreachable after failed contact attempts. Sherlock analyzed outreach patterns to identify the contact windows that actually converted.
Before you ask Sherlock
“Nothing clears up a case so much as stating it to another person.”
— Silver Blaze
Pricing
Get started for free. Upgrade when your call volume grows.
A team of 4 engineers spending 3 hours each on one call failure costs $1,800+ in lost time. Sherlock finds the same answer in under 5 seconds — and costs less than a single hour of that investigation per month.
Starter
8,000 credits (one-time) per Slack workspace
Includes:
- Ask Sherlock anything in Slack threads & DMs
- Investigate calls across Twilio, ElevenLabs & Genesys
- Cross-service correlation & call timelines
- Transcript search & conversation analysis
- Per-call cost breakdowns
Team
per Slack workspace, per month
Everything in Starter, plus:
- Monthly credits auto-refresh — Sherlock never stops investigating
- Scheduled reports: daily failure alerts, weekly cost summaries, custom audits
- Root cause analysis with error chain tracing across providers
- HubSpot CRM integration
Enterprise
More powerful model for your team
Everything in Team, plus (typical):
- Google Ads, Meta Ads & Google Analytics call attribution
- Custom integrations with internal tools & APIs
- Dedicated onboarding + custom alert rules
- SLA + priority support channel
- Invoicing + custom billing terms & DPA
Prices shown excl. VAT. EU customers may be subject to applicable local taxes (Spain: 21% IVA).
“No man burdens his mind with small matters unless he has some very good reason for doing so.”
— A Study in Scarlet
Who built this
Built by a team that lived this problem
20+
enterprise clients
in production
3+
years building
voice AI in production
2.5M+
voice AI calls
handled
3
founders,
one shared frustration
Every time a call failed at 3am, the evidence was split across three or more dashboards and databases that didn't speak to each other. Over three years running voice AI for 20+ enterprise clients across Southern Europe and Latin America, we rebuilt those investigations and timelines manually — every single time.
Sherlock is the tool we kept wishing existed — so we built it.
“Education never ends, Watson. It is a series of lessons, with the greatest for the last.”
— His Last Bow
The game is afoot.
It never stops.
Sherlock never clocks out. Every provider under observation. Every anomaly investigated. The case file in your Slack before it existed in your mind.
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