Security

MouseCat

Website
Founded 2026Origin source ↗Checked 2026-09-15

Overview

MouseCat enables companies to detect suspicious activity, automate investigations, and act before the money leaves.

We work with Fortune 500 companies and startups to deploy real-time models and AI agents that reduce fraud, compliance incidents, and friction for good customers.

Company description As recorded 2026-11-08
LinkedIn About
SecurityAI agentBusinessesEnterpriseSubscription

Customers & use cases

MouseCat customers include public and Fortune 500 companies, and businesses across a variety of industries including: banks, credit unions, crypto exchanges, e-commerce sites, i-gaming, and marketplaces.

Source-reported As recorded 2026-10-06

Founders & team

Previously Agnostic

Company history As recorded 2026-11-08

Nicholas Aldridge

Founder/CEO

Nicholas Aldridge is the Co-Founder and CEO of MouseCat, and a core maintainer of MCP. He spent 6.5 years as a Principal Engineer at AWS AI, where he helped launch and lead Amazon Bedrock Knowledge Bases, Agents, and AgentCore. He also represented Amazon on the A2A steering committee. Nicholas has helped some of the largest and most security and privacy sensitive organizations in the world to plan and implement their AI strategies.

LinkedIn X
Founder profile As recorded 2026-09-15

Joseph McAllister

Founder/CTO

Joseph McAllister is the Co-Founder and CTO of MouseCat. Before MouseCat, Joseph spent 4 years building systems that power every risk decision at Coinbase. He focused on streaming pipelines, large-scale data processing workloads, and improving ACH and ATO risk models. While studying Computer Science at Cornell University, he founded Roo Storage, which was acquired in 2020 by Handled (now UniGroup).

LinkedIn
Founder profile As recorded 2026-09-15
6team members reported
Source-reported As recorded 2026-09-15

Founded 2026 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthenriched profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedNew York City, NY, USA
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 3 of 6 areas documented

Source-based assessment · automated evidence rules

The retained text does not establish product availability or customer use.

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
independent websitesource corroborationreachable websitedescriptive evidenceclassified market and modelsourced peoplesourced founding yearrecent publishing observed
startup.observe Directory coverage · Sources & method