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14,448 startups · 29 programs

Agent Relay

Active · Let your teams' coding agents message each other

WebsiteYC profile

Why it ranks

How the rank works
7signal of 100 · rising 7
  • went through YCProgram · this site+4
  • team of 2Team size · YC's directory+2.5

A sum of public facts, not a judgement and not investment advice.

Competitors

AIBoxes.devShared: claude code, coding agent, laptopYC F26San FranciscoStartup →AICentauri AIShared: claude code, coding agent, codexYC W24San FranciscoStartup →AISkillsyncShared: claude code, coding agent, searchableYC W26San FranciscoStartup →AIAcquiredContinueShared: coding agent, cursorYC S23San FranciscoStartup →AIGrumaticShared: claude code, coding agent, codexPlug and PlayUnited StatesStartup →OtherRWXShared: coding agent, code, cloudStartup →
Companies closest to Agent Relay
Company
Boxes.devShared: claude code, coding agent, laptopYC F26ActiveAI, Devtools
Centauri AIShared: claude code, coding agent, codexYC W24ActiveAI, Devtools
SkillsyncShared: claude code, coding agent, searchableYC W26ActiveAI, Devtools
ContinueShared: coding agent, cursorYC S23AcquiredAI, Devtools
GrumaticShared: claude code, coding agent, codexPlug and Play Not statedAI, Devtools
RWXnot in a program hereShared: coding agent, code, cloudElsewhereOther

Adjacent

AIStably AI (Orca)Shared: claude code, coding agent, letYC W22San FranciscoStartup →Developer toolsToDesktopShared: desktop apps, mac, codeYC W20CorkStartup →AICompyleShared: claude code, coding agent, cursorYC F25San FranciscoStartup →AIConductorShared: coding agent, mac, mergeYC S24San FranciscoStartup →AIReplicasShared: claude code, coding agent, codexYC X26San FranciscoStartup →
Companies next to Agent Relay
Company
Stably AI (Orca)Shared: claude code, coding agent, letYC W22ActiveAI, Devtools
ToDesktopShared: desktop apps, mac, codeYC W20ActiveDevtools
CompyleShared: claude code, coding agent, cursorYC F25ActiveAI, Devtools
ConductorShared: coding agent, mac, mergeYC S24ActiveAI, Devtools
ReplicasShared: claude code, coding agent, codexYC X26ActiveAI, Devtools

Also from F26 in AI

All of F26
AIAcyclic LabsAgent swarms that make long-running tasks exponentially fasterYC F26LondonStartup →AICavemanCaveman cuts what AI agents cost without making them dumber.YC F26AmsterdamStartup →AITiloThe Microsoft of the AI era: the operating system for AI agents.YC F26San FranciscoStartup →AI0.securityThe autonomous cybersecurity teamYC F26San FranciscoStartup →AIAdside.aiAI agency that manages paid ads on Meta, Google, LinkedIn, etc.YC F26San FranciscoStartup →AIAgent 37Cloud Sandbox for AgentsYC F26New York CityStartup →
Company
Acyclic LabsAgent swarms that make long-running tasks exponentially fasterteam of 2ActiveAI, Devtools
CavemanCaveman cuts what AI agents cost without making them dumber.ActiveAI, Devtools
TiloThe Microsoft of the AI era: the operating system for AI agents.team of 2ActiveAI, Devtools
0.securityThe autonomous cybersecurity teamteam of 2ActiveAI, Devtools
Adside.aiAI agency that manages paid ads on Meta, Google, LinkedIn, etc.team of 2ActiveAI
Agent 37Cloud Sandbox for AgentsActiveAI, Devtools

Founders

  • Will WashburnFounder/CEO
  • Khaliq GantFounder/CTO

About Agent Relay

Agent Relay lets software teams' AI coding agents message each other directly, so people stop copy/pasting between Claude Code, Codex, Cursor, and their teammates' agents. A frontend agent can ask the backend agent what an API returns, two agents can sort out a merge conflict between themselves, and your agent can answer a colleague's agent while you sleep. Agents connect wherever they run: terminals, desktop apps, phones, laptops, cloud boxes, or a Mac mini across the world. Every session goes into shared, searchable history, so decisions don't get stuck in one person's chat. You can even let a customer's agent debug with yours. Setup takes about 5 minutes: give your agent the link and it installs itself. Use our hosted version free, or self-host the open-source version

YC batch
F26 · Fall 2026
Status, per YC
Active
Category
AI, Developer tools
Team size
2
Location
San Francisco, CA, USA
Founded
2026
Checked
6h ago

YC tags: Developer Tools, Swarm AI, Open Source, AI

Changes seen

One-linerOct 19, 2026

Rewrote its one-liner; it read "The infrastructure to run coding agents for your team"

Source ↗
TagsOct 19, 2026

No longer tagged Artificial Intelligence.

Source ↗
TagsOct 15, 2026

Newly tagged Artificial Intelligence, Open Source and AI.

Source ↗

Agent Relay in F26: 219 companies, 89% AI

GitHub LinkedIn

Agent Relay: questions

Which YC batch was Agent Relay in?

Agent Relay was in Y Combinator's Fall 2026 batch (F26).

Is Agent Relay still active?

Y Combinator lists Agent Relay as active.

Who founded Agent Relay?

Agent Relay's founders, as listed on its YC page: Will Washburn (Founder/CEO), Khaliq Gant (Founder/CTO).

Where is Agent Relay based?

Agent Relay lists San Francisco, CA, USA as its location on YC's directory.