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Jeremy Huang

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Jeremy Huang is founder and CEO of Jcode, an open-source coding-agent company in Y Combinator’s Summer 2026 batch. He focuses on running multiple agents in parallel with less memory overhead.[1]

Start with Jcode →
Jeremy Huang

Links

Jcode GitHub X · 1jehuang

Founder and CEO · Jcode

Contributions

Coordinating agents in a repository

Jcode manages sessions through a shared server. When one agent changes a file another has read, the server notifies the second agent so it can inspect the change and respond. Agents can message one another or coordinate a group of workers. The software supplies communication and awareness of changes; agents still need to reason about conflicts and the correctness of their combined work.[2]

Customizing the harness itself

The project’s self-development mode lets an agent modify, build and test Jcode’s own source, then reload its binary while continuing a session. This makes the harness another editable part of the workflow. Its demonstrations and reproducible benchmarks expose concrete behavior such as startup latency and incremental session memory.[2]

Ideas

Huang frames the number of agents a developer can run as a systems problem: each additional process consumes memory, so a heavy harness can constrain concurrency before the model service becomes the limit. Jcode’s design targets that overhead. His company’s launch demonstrates a workflow with many parallel agents; its comparative measurements are project-specific benchmarks rather than a general promise for every machine or task.[1]

Tools, writing & talks

Tools

  • Start here

    Jcodegithub.com

    A coding-agent harness with shared session management, agent messaging and a workflow for modifying its own implementation.

    Start with the demonstration and swarm explanation before configuring a model provider. Trying the tool requires a supported development machine and credentials or login for the chosen model service.

    Creator and company founder[1][2]Original source

Writing, research & talks

  • Jcode launchycombinator.com

    Huang’s first-person explanation and demonstration of the memory problem behind parallel coding agents.

    Founder and presenter[1]
References

Latest source check 2026-10-30

  1. [1] Jcode founder profile at Y Combinator

    www.ycombinator.com · Checked 2026-10-30

  2. [2] Jcode repository

    github.com · Checked 2026-10-30

  3. [3] Jeremy Huang GitHub profile

    github.com · Checked 2026-10-30

Jeremy Huang | VibeLeaderboard