YC Summer 2026 (S26) founder

Rhys Sullivan

Founder of Executor, The open source tool gateway

Company

Rhys Sullivan is listed as a founder of Executor. Executor.sh is an MCP gateway that allows you to sign in once to all of your integrations and use them with any client. We enable you to connect your agents to anything (MCP, GraphQL, OpenAPI) so regardless of what you're trying to connect agents to you're able to. If you're trying to scale agents to access all of your production services, data, etc, you need Executor as a unified management layer.

Founder traction evidence

Public posts and activity attributed directly to this founder.

  1. X

    You’re absolutely right — that did kill your plants and that’s my mistake

    You’re absolutely right — that did kill your plants and that’s my mistake

  2. X

    Executor is joining the YC S26 batch! We're building an open source MCP gateway to connect any agent to any service Your team is constantly spinning up new agents, trying out new tools, wrangling multiple accounts.

    Executor is joining the YC S26 batch! We're building an open source MCP gateway to connect any agent to any service Your team is constantly spinning up new agents, trying out new tools, wrangling multiple accounts. You need one place to configure everything once, and use them

  3. X

    Have we tried telling human mathematicians “keep going” and “believe in yourself”?

    Have we tried telling human mathematicians “keep going” and “believe in yourself”?

  4. X

    typa shit you gotta tweet when you didn't buy compute

    typa shit you gotta tweet when you didn't buy compute

  5. X

    I really don’t think any of us have internalized just how much software development has changed in these few years, truly insane numbers

    I really don’t think any of us have internalized just how much software development has changed in these few years, truly insane numbers

  6. X

    anyone else getting capacity errors on gpt models?

    anyone else getting capacity errors on gpt models?

  7. X

    Feels like people won't appreciate how big of a deal this is, Effect gives you: - Schema - OpenAPI client / server - Open Telemetry - Database drivers - Dependency injection - Typed errors All with no dependencies at a time where supply chain attacks are rampant

    Feels like people won't appreciate how big of a deal this is, Effect gives you: - Schema - OpenAPI client / server - Open Telemetry - Database drivers - Dependency injection - Typed errors All with no dependencies at a time where supply chain attacks are rampant

  8. X

    Gendered language seems like linguistic tech debt Like why is a door in French feminine

    Gendered language seems like linguistic tech debt Like why is a door in French feminine