Sentinet

Shared-defense agent for small firms: one member's confirmed fraud warns the whole network.

Sentinet connects in an afternoon to an SMB's mailbox, accounting system and bank feed, and runs an agent that screens invoices, vendor bank-detail changes and unusual logins.

AI agent as a service
Small business
$1-10B market
Network effects, winner takes most
US first

4/5

venture judge

similar startups, last 2 years (2 all-time)

97%

of 3 nearest real companies still alive

sector

73 public grants in this sector, none matching the idea's terms

Scorecard

One score that balances how trendy the idea is, the demand for it and its potential for 100x, with competition measured relative to every other idea in the catalog. Recent startup trends first, government priorities second.

Idea Score, 0-100 · raw 54.4 x 1.64

Warm

competition: more crowded than 20% of ideas · headwind x0.90

+0.0

government priorities, secondary (0 matching grants)

Trend

Is the wave forming now? 2025-26 entrants vs 2023-24, rounds since 2025, the sector's live-batch direction, the 2026 trend analyst.

Entrants 2025-26 vs 2023-24 (similar companies)70
Rounds announced 2025+ in the sector25
Sector direction (live batch)100
2026 trend analyst50

Demand

Does anyone want it? YC's current RFS, companies already paid for something similar, the operator judge, founders' yes-rate in decks, readers who would run the test.

YC asks for it (current RFS: idea / sector)60
Someone already pays (similar companies, recent / all-time)17
Operator judge: real pain75

100x potential

Can it return a fund? The venture judge (double weight), market-size and moat axes, neighbours still alive, the technologist judge.

Venture judge75
Market size axis33
Moat axis100
Technologist judge75

Score = 100 x cbrt(Trend x Demand x 100x) x (1 - 0.5 x crowding) + government bonus (max 5), calibrated so the 95th-percentile idea scores 90 (order never changes). A geometric mean: a weak pillar cannot be papered over. Percentiles are among the 272 ideas in the catalog; the terms matched were shared-defense, firms, member, confirmed, fraud, connects, afternoon, smb.

The idea in full

What: Sentinet connects in an afternoon to an SMB's mailbox, accounting system and bank feed, and runs an agent that screens invoices, vendor bank-detail changes and unusual logins. What makes it different is the pooled layer: when any member confirms a fraudulent invoice, spoofed domain or mule account number, a signed warning reaches every other member that touches that vendor, domain or account within minutes. Self-serve at $99 to $399 a month, with a small verification desk that confirms escalations before they hit the network.
Why now: The SBA's 'MANUFACTURING AND SMALL BUSINESS CYBERSECURITY RESILIENCE PROGRAM 2026' closes 2026-09-04 and is pushing money at exactly this buyer, and Inforcer raised $50M on 2026-07-30 to help smaller businesses handle AI and security risk. The radar shows Strongkeep (500global) selling affordability to the same segment and MouseCat (yc W26) and Incandor (yc X26) selling fraud intelligence to financial institutions, but nothing pooling signal between the small businesses themselves.
Wedge: first customer and entry point: Trade suppliers in one metro: construction, HVAC and equipment distributors, who share the same vendors and payment habits. Fifty of them in one city creates enough vendor overlap for the pooled warnings to fire in week one, and each one refers its own suppliers.
Path to 100x: Small-business payment fraud and security tooling in the US is a $1-10B budget line, and the mechanism is a real network: warning value scales with how many members share a vendor, so the largest network is strictly the most useful and a second network is worth less per member. That produces winner-takes-most economics in a segment normally condemned to fragmented resellers.
Ceiling: SMBs treat this as a $99 nice-to-have and cancel after a quiet quarter, holding revenue per member too low to fund the verification desk.
Closest real companies, as the generator saw them: Strongkeep and Inforcer deliver single-tenant security tooling per business, so nothing one customer learns helps another. MouseCat and Incandor build fraud intelligence for banks and fintechs; Sentinet owns the small-business side of the same transaction, where the invoice is actually approved.
Main risk: Small-business churn outruns network density, and the pooled warnings never get frequent enough to be the reason anyone stays.

Five judges

Each judge scores every idea in the catalog with a named rubric; the venture judge decides whether a card is shown at all (4-5 is venture-grade).

Venture investor
4/5
Pooled fraud signal is a real compounding network where the largest graph is strictly most useful, though $99-399 per month ACV limits how big the outcome gets.
Bootstrapper
5/5
$99-$399 self-serve to HVAC and construction suppliers who already lose money to invoice fraud, live in an afternoon, revenue within a year.
Operator
4/5
Invoice and vendor-change fraud is frequent and expensive, the SMB owner controls the budget, and it plugs into the existing mailbox and accounting stack.
Technologist
4/5
The pooled vendor-fraud graph compounds with every confirmed invoice, and mailbox-plus-bank-feed plumbing across 50 trade suppliers is buildable today, not a wrapper.
Risk
4/5
Self-serve $99-$399 across many independent SMBs means no key-customer concentration, though the mailbox, accounting and bank-feed connections are borrowed pipes.
trends
3/5
The SBA cybersecurity program closing 2026-09-04 adds the secondary grant point to Inforcer's raise, but pooled fraud warnings were buildable in 2023.

Similar startups in the directory

Companies whose pitch matches most of the idea's terms (shared-defense, firms, member, confirmed, fraud, connects, afternoon, smb): 2 all-time, 1 from the last two years. Same matching as Idea Check.

FLX Networksplugandplay PnP 2025 · 2025 · Fintechalive
FLX Networks is a B2B community modernizing and simplifying the engagement experience between asset management and wealth management
Affinitypearalive
The CRM for private capital

Run this as an Idea Check →

The generator's reference companies

Real companies the model named as closest when it wrote the card, with their fate. A check mark is a company the radar could verify in its directory.

Public money in this direction

US federal grants, SBIR/STTR awards and open opportunities from the radar's public-money feed, matched to the idea's terms; the sector totals give the context.

grants and programs matching the idea

startup-relevant grants in Security and compliance

$18M

awarded in the sector, tracked

opportunities open now in the sector

All public money by sector →

Market signal

What the radar sees in Security and compliance: new companies by cohort year, the forming YC batch, and outcomes since the February snapshot.

Security and compliance · 42 → 45 → 83 → 75 → 32 new companies 2022 → 2026 · 94% aliveYC S26: 7 in this cluster, 3% of the batch (was 3% in X26) (F26 is still forming: 21 listed)Since February, of 171 YC companies here: 0 acquired, 2 shut down, 24 rewrote their pitch

Security and compliance: companies, trend and grants →

Design attributes

The card is one cell of a designed set: every axis below was chosen before the text was written, and the text had to realize it.

Buyer: Small business
Business model: AI agent as a service
Path to 100x: Network effects, winner takes most
Market size: $1-10B market
Capital intensity: Capital-medium (ops, field teams)
Speed to revenue: Revenue within a year
Technical depth: Real engineering
Go-to-market: Self-serve
Moat: Network effects
Geography: US first
Regulation: Some regulation
Vibe: Boring business