Nx releases Polygraph, a cross-repo agent meta-harness

Category: Agentic coding
Status: discussion
Sources: Nx blog
Summary: Nx announced Polygraph on 2026-06-26, an agent-agnostic meta-harness that connects multiple private and public repositories into one dependency graph without moving code, lets an agent read and write across them, and orchestrates the resulting PRs and CI as a single change. It records every session so agents can resume work and reuse decisions across machines and agent implementations, and ships a TUI supporting Ghostty, Kitty, Zellij, and tmux. The post frames the additions as removing spatial (single-repo) and temporal (no memory) limits on agent autonomy.
Why it matters: Cross-repository edits and persistent session memory target two recurring failure modes when agents work in real multi-repo codebases.