Pi 1.0
Today Earendil is shipping Pi 1.0, a hardened, minimal, extensible agent harness, alongside Pi Durable, a new experimental substrate for long-running agentic applications.
Topic
Earendil
Pi Durable
Pi Durable is a new experimental package for long-running, durable, and malleable agents that can run anywhere. A tour of what Earendil built…
You said no MCP
Pi now supports MCP. Why Earendil changed Earendil’s minds, what changed in MCP and in Pi, and what Codemode is.
What Is a Harness?
An agent harness is a piece of software that provides an environment for an AI model to operate within.