Fundraising Fox

Nicholas Aldridge

Founder

Co-Founder & CEO at MouseCat

New York City Metropolitan Area

FoundedMouseCat · YC

About

Nicholas Aldridge is Co-Founder and CEO of MouseCat and a maintainer of MCP. He previously served as Principal Engineer at AWS AI for 6.5 years, where he worked on Amazon Bedrock Knowledge Bases, Agents, and AgentCore, and participated on the A2A steering committee.

LinkedIn ↗X / Twitter ↗

Co-Founder & CEO at MouseCatYC W26

Intro paths

YC

Nicholas went through Y Combinator (Winter 2026) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Jared Friedman, General Partner at Y Combinator — the partner who ran MouseCat's batch and knows the company first-hand. YC profile ↗

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In turn, Nicholas can intro founders to MouseCat's investors below.

MouseCat's investors · 2

Imagination CapitalY Combinator

Co-founders at MouseCat

JMJoseph McAllister
Joseph McAllisterCo-Founder & CTO

Experience

  1. MouseCat (YC W26)Co-Founder & CEOcurrent2026 — present
  2. Model Context ProtocolCore Maintainercurrent2025 — present
  3. Amazon Web Services (AWS)Principal Engineer2025 — 2026Seattle, WA
  4. Amazon Web Services (AWS)Senior Software Engineer2022 — 2025
  5. Amazon Web Services (AWS)Software Engineer II2020 — 2022
  6. Amazon Web Services (AWS)Software Engineer2019 — 2020
  7. Agent2AgentTechnical Steering Committee Member2025
  8. CroweData Science Intern2019
  9. fuseCEO / Co-Founder2018 — 2019
  10. XLP CapitalSoftware Engineer2017 — 2018
  11. XLP CapitalSummer Analyst2017Greater New York City Area
  12. Becker Friedman InstituteResearch Assistant2016 — 2017Greater Chicago Area
  13. Marathon Strategies LLCResearch Intern2016Greater New York City Area
  14. United States SenateIntern2014 — 2015Washington, D.C.

Education

  1. University of ChicagoMaster's degree, Computer Science2018 — 2019
  2. University of ChicagoBachelor's degree, Mathematics2015 — 2019
  3. The Loomis Chaffee SchoolHigh School Diploma2010 — 2014

Skills & more

Machine Learning2Public Policy2Python (Programming Language)Public Relations4Algorithms

Languages English · French

From Nicholas's professional profile.

Same school

Also attended University of Chicago273

Mark SusterManaging Partner at Upfront VenturesShardul ShahInvestor at Index VenturesSam BlackmanEntrepreneur in Residence at GV (Google Ventures)Clay FisherInvestor at Spark CapitalJonas CiplickasPrincipal at Scale Venture PartnersJulia Gonzalez SandersPartner and General Counsel at Crosslink Capital

+ 267 more

Also attended The Loomis Chaffee School10

Carley PhillipsPrincipal at GreycroftJason MorrisVice President, Investor Relations at Sapphire VenturesJay H. KimPartner at Black Jays VenturesAdrienne HendersonSenior Investment Associate at Quona CapitalDrew PelletierVice President at Upper90Jonathan PerlGeneral Partner at Boulder Ventures

+ 4 more

Shared employers

Also worked at United States Senate70

Matt GersonInvestor at RevolutionMichelle FangResident at Lux CapitalNick GasbarroChief of Staff at QED InvestorsLuc Ryan-SchreiberPrincipal at AlleyCorpDominique LittleGovernment Affairs Lead at ParadigmTidal McCoyChairman at IronGate Capital Advisors

+ 64 more