Monitoring live

When something important changes,
Sentinel calls you
with the facts and source links.

Sentinel monitors competitors, regulations, outages, executive moves, pricing pages, and other high-stakes changes. When a threshold is crossed, it verifies the signal, saves the briefing, and shows the exact links behind the alert.

Free early access · No credit card required

sentinel — live briefings
9
OpenAI pricing page changed

Triggered 4 minutes ago · score 9.1 / 10

Batch API pricing dropped and enterprise terms changed. Sentinel escalated because this watch is tagged as high financial impact and the page change persisted.

Calling now
2 sources verifiedLast checked 09:14CFO + CEO + Eng Lead

Why this fired

Pricing delta exceeded your threshold, change persisted across two crawls, and Firecrawl Agent found corroboration from the public pricing docs and API changelog.

7
Briefing ready for review
Transcript saved

Voice briefing saved, transcript ready, and exact source links attached to the update.

2
Routine market chatter
Suppressed

Mention volume increased, but no primary-source change and no persistence across crawls. Sentinel stayed silent.

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Firecrawl
Claude AI
ElevenLabs
Twilio

Use cases

Built for high-urgency monitoring.

Sentinel is strongest when the cost of missing a change is high: competitor moves, pricing updates, regulatory shifts, incident response, and executive alerts that need a fast, clear response.

Founders & leadership

Track competitors, pricing, launches, partnerships, and executive moves. Get the strategic angle first, not a generic alert.

Finance teams

Monitor pricing pages, earnings signals, vendor changes, and revenue-impacting announcements. Route the call to the people who own the number.

Security & incident response

Watch advisories, CVEs, vendor notices, and outage pages. Escalate only when the signal is verified and urgent.

Legal & compliance

Track regulators, court decisions, enforcement notices, and policy changes. Maintain a source-backed trail for why the alert fired.

Engineering & operations

Monitor API changes, infrastructure incidents, changelogs, and dependency updates. Send technical briefings to the people who can act immediately.

Communications teams

Catch brand mentions, press coverage, crisis signals, and public narrative shifts before they harden into a bigger problem.

Two modes

Works for you. Scales for your team.

Personal mode

For individuals watching what matters to them

Track anything on the web

Jobs, competitors, news, products, regulations — if it's online, Sentinel can watch it.

AI-scored changes

Every shift scored 0–10. Only genuinely important changes reach you. No noise.

Phone call briefings

An AI voice calls you and explains what changed, why it matters, and what to do next.

SMS + email fallback

Busy or in a meeting? Sentinel sends a text and email instead. Nothing gets lost.

Calendar-aware

Connect Google Calendar. Sentinel won't call during meetings — it waits or falls back to SMS.

Deep research

High-priority changes trigger autonomous deep research across multiple sources before calling.

Team mode

For teams that need coordinated awareness

Simultaneous team calls

Every team member's phone rings at once. No waiting, no forwarding, no delay.

Role-specific briefings

CEO hears strategy. Engineer hears tech details. CFO hears financials. Same event, different angles.

Team management

Add members, assign roles, manage permissions — all from the dashboard.

Full call transcripts

Every briefing is stored. Review what was said, when, to whom, and what they were told.

Shared watchlists

Team watches are shared. Everyone sees the same feed, but hears their own briefing.

Usage analytics

Track polls, alerts, calls, and scores. See how Sentinel is performing across your topics.

How it works

Detect, verify, brief, act.

Sentinel does more than detect a diff. It checks whether the change is persistent, verifies it against sources, routes the right briefing to each role, and leaves a clear audit trail behind.

STEP 01

Watch

Define a source, topic, or company that matters. Add thresholds, urgency, and who should be called if the signal is real.

STEP 02

Verify

Sentinel compares snapshots, checks whether the change persists, and corroborates it with additional sources before escalating.

STEP 03

Route

Once the threshold is crossed, Sentinel decides who needs to know now and tailors each spoken briefing to their role.

STEP 04

Act

Every alert leaves behind sources, timestamps, transcripts, and a written summary so the next action is obvious.

Team intelligence

Same event. Different briefings.

When Sentinel detects a critical shift, every team member's phone rings simultaneously. Each person hears only what's relevant to their role — no information overload, just clarity.

C
CEO
Strategic briefing

This positions them ahead in enterprise AI. I'd recommend accelerating partnership talks before competitors react. The window is narrow — maybe 2 weeks before the market adjusts.

Incoming call from Sentinel
E
Engineer
Technical briefing

Their API is migrating from v1 to v2 with breaking schema changes. Our integration layer needs a patch — I'd estimate 2 days. Authentication flow is the highest-risk area.

Incoming call from Sentinel
C
CFO
Financial briefing

Revenue impact estimated at 12–15% for affected product lines. Their pricing shift could save us $40K quarterly, but we need to lock in the new tier before end of month.

Incoming call from Sentinel

Trust

Every call comes with evidence.

A phone call is a high-interruption alert. Sentinel only works if people can see why it fired, what changed, which sources confirmed it, and who received each version of the briefing.

Why it triggered

See the score, the threshold crossed, the persistence across crawls, and the specific condition that caused escalation.

Source-backed verification

Review primary sources, timestamps, and corroborating links so each alert is easy to trust and easy to audit.

Role-aware routing

Know exactly who was called, why they were included, and how each spoken briefing differed by responsibility.

Transcripts and written summaries

Every call leaves a transcript, a summary, and a clean handoff artifact for the rest of the team.

Anything on the web

Best for changes that need action.

Competitor launches
Pricing changes
Regulatory updates
Security advisories
Incident pages
API changelogs
Executive moves
Vendor notices
Earnings signals
Policy changes
Press coverage
Brand crises
Court decisions
Supply chain alerts
Partnership announcements
Product recalls
Outage reports
Procurement updates
Enforcement actions
Strategic hires

Roadmap

What we're building next.

Sentinel is just getting started. Here's the path ahead.

Live now

Web monitoring via Firecrawl
AI change scoring with Claude
Deep research with Firecrawl Agent
Phone call briefings via ElevenLabs
Role-specific team briefings
SMS + email fallback alerts
Dashboard with transcripts + analytics

Coming soon

Datadog integration
AWS CloudWatch monitoring
PagerDuty escalation chains
Stripe billing anomaly alerts
Slack + Teams notifications
Custom alert rules engine
Multi-topic correlation & patterns

On the horizon

WhatsApp + Telegram briefings
Scheduled daily digest calls
Custom LLM provider support
Self-hosted deployment option
Public API for integrations
Mobile app with push alerts
Enterprise SSO + audit logs

Get alerted only when the signal is real.

Join the waitlist for early access. Sentinel is built for teams that need trusted, source-backed alerts with role-specific briefings and a clear record of why the call happened.

Free early access · No credit card required