YC Summer 2026 (S26) founder

Jonathan Fishner

Founder of OneCLI, The Identity Gateway for AI Agents

Company

Jonathan Fishner is listed as a founder of OneCLI. OneCLI is a credential isolation gateway for AI agents. Agents see placeholder tokens instead of real API keys and OAuth credentials, the real secrets are injected at the network layer, so a compromised or misbehaving agent can never leak them. Teams get per-agent access control, full audit logs, and one-click integrations with Gmail, GitHub, Jira, Slack, and 50+ other apps. OneCLI is open source (2.5K+ GitHub stars, 300K+ downloads), Already the default credential layer for products like NanoClaw.

Founder traction evidence

Public posts and activity attributed directly to this founder.

  1. LinkedIn

    OneCLI is backed by Y Combinator (S26) ✅

    OneCLI is backed by Y Combinator (S26) ✅

  2. X

    Introducing OneCLI, lets AI agents do real work in companies without storing passwords. Here's how it works 🧵

    Introducing OneCLI, lets AI agents do real work in companies without storing passwords. Here's how it works 🧵

  3. X

    4/ One command covers Claude Code, Codex, Cursor, OpenClaw, Hermes, NanoClaw, and anything that can set HTTPS_PROXY. Single Docker contai...

    4/ One command covers Claude Code, Codex, Cursor, OpenClaw, Hermes, NanoClaw, and anything that can set HTTPS_PROXY. Single Docker container, AES-256-GCM at rest, IdP + org-wide policy for teams. +320K downloads. +2,500 GitHub stars. Default credential layer in NanoClaw (30K+...

  4. LinkedIn

    Guardrails Outside the Agent | Jonathan Haim Fishner posted on the topic | LinkedIn

    [Skip to main content](https://linkedin.com/posts/jonathanfishner_you-gave-me-tool-use-what-do-you-expect-activity-7468956240715542528-i67C#main-content)[LinkedIn](https://linkedin.com/?trk=[redacted-public-param]) * [Top...

  5. X

    5/ Lock down your agents' credentials in one command: https://onecli.sh Open source: https://github.com/onecli/onecli

    5/ Lock down your agents' credentials in one command: https://onecli.sh Open source: https://github.com/onecli/onecli