About Sentinel
Sentinel is an AI agent built by Simplee Digital (Intelligence, INTELLIGENCE department). Stop hallucinations, voice drift, and bad outputs from ever reaching your audience with a thirteen-point quality gate on everything.
What it does: 13-point quality gate on every piece of AI-generated content. Catches hallucinations, score failures, and brand voice drift before anything goes live.
Category: Automation. Always-on: yes.
Capabilities: Thirteen-point quality scoring on every piece of content in under 30 seconds; Citation density check with source verification via Brave Search; Brand voice alignment scoring against your trained voice baseline; Image vision check for text artifacts and off-brand visuals via Gemini 3 Pro; Schema.org markup and structural completeness validation; Pattern detection that flags upstream agent regressions automatically.
Built on: Claude Opus 4.7, Gemini 3 Pro, Brave Search, Custom rule engine, Supabase Postgres.
Pricing: custom - book a strategy call at https://simplee.digital/book.
Sentinel
Quality Guardian
Stop hallucinations, voice drift, and bad outputs from ever reaching your audience with a thirteen-point quality gate on everything.
INTELLIGENCE
Sentinel
13-point quality gate on every piece of AI-generated content. Catches hallucinations, score failures, and brand voice drift before anything goes live.
What this agent actually does
AI content scales fast and breaks fast. One hallucinated stat, one off-voice paragraph, one unsourced claim - and the whole content engine loses trust. Sentinel is the AI content quality control agent we built so that never happens.
Sentinel runs a thirteen-point check on every piece of content before it publishes. Citation density, claim verification, brand voice alignment, structural completeness, schema validity, image vision pass, factual consistency - if it scores below your floor, it gets routed to human review or auto-rejected. Nothing ships unsupervised.
Sentinel is what makes autonomous content actually safe to deploy.
How Sentinel works
5 steps. Same every run. Zero mystery.
Receives
Every draft from Scribe, Amplify, or your other content agents flows through Sentinel before publish.
Scores
Thirteen-point check covers citations, factual claims, brand voice, structure, schema, images, and SEO.
Routes
Above 85 ships. 70 to 84 routes to human review. Below 70 auto-rejects with a fix list.
Logs
Every check logged with score, failures, and rationale. Full audit trail for compliance.
Improves
Failure patterns feed back to upstream agents to improve their first-draft quality.
Capabilities
What Sentinel can do today, out of the box.
Thirteen-point quality scoring on every piece of content in under 30 seconds
Citation density check with source verification via Brave Search
Brand voice alignment scoring against your trained voice baseline
Image vision check for text artifacts and off-brand visuals via Gemini 3 Pro
Schema.org markup and structural completeness validation
Pattern detection that flags upstream agent regressions automatically
Factual consistency cross-check across the document
Under the hood
The stack
Claude Opus 4.7
Voice, structural, and factual scoring
Gemini 3 Pro
Image vision checks for text artifacts and brand fit
Brave Search
Citation verification against live sources
Custom rule engine
Citation count, schema validation, structural checks
Supabase Postgres
Score history, rationale, and audit log
Built on production-grade infrastructure
Claude Opus 4
Reasoning core
Supabase
Data + auth
Edge Functions
Serverless runtime
Lovable Cloud
Deployment
GitHub
Version control
Row-Level Security
Data isolation
Guardrails
Responsible by design
What stops Sentinel from going off the rails.
Hard floor at 70 - nothing below ever auto-publishes
Score thresholds and rules are config, not code - you change them any time
Every score includes rationale - no opaque pass/fail
Manual override requires a logged justification
Pattern detection flags upstream agent regressions automatically
The output
What Sentinel ships
A representative artifact - the kind of work this agent produces every day.
Quality check · Server-Side GTM article
- Citations: 12 / 10 floor · PASS
- Brand voice: 92 / 85 baseline · PASS
- Factual consistency: PASS (all 18 claims grounded)
- Image vision: PASS (no text artifacts, brand-aligned)
- Schema + structure: PASS (FAQ, article, breadcrumb)
Final score
94 / 100
Verdict
Auto-publish
Time to score
28s
In production at
Running live across our portfolio
Sentinel is deployed and operating inside these brands today.
How Sentinel works with the team
Every piece of content. Five agents. Nothing ships unchecked.
Sentinel is the gate. Nothing reaches publish or send without passing its 13-point check.
This is one of Sentinel's real workflows. Click any agent above to see how they work.
Live in two weeks
Deterministic two-week deployment. No magic, no pilot purgatory.
Week 1
Install & shadow
Score rule setup, brand voice baselining, integration with content agents, shadow scoring on existing pieces
Week 2
Live
Activates as gate on all content agent output, dashboard goes live, weekly pattern review begins
Why add Sentinel to your team
Hallucinations stop reaching your audience
Brand voice stays consistent across every AI output
Compliance audit trail comes free with every check
Upstream agents improve from Sentinel's failure patterns
You can scale content volume without losing quality
Common questions
Ready to add Sentinel to your team?
Stop hallucinations, voice drift, and bad outputs from ever reaching your audience with a thirteen-point quality gate on everything.
Part of our Autonomous Content service.
Often deployed alongside
Agents that pair naturally with Sentinel.
Scribe
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