Keep the Why vs. past.dev vs. Agent Memory Repo vs. agentmemory
Four tools called agent memory. Four different approaches to what should survive. One puts decision rationale next to the code.

Four tools called agent memory. Four different approaches to what should survive. One puts decision rationale next to the code.

Rationale, structured knowledge, or codebase intelligence for coding agents?

Keep the Why records why a codebase is the way it is. Decisions can cite decisions in other repositories. The Globe follows those citations outward, one wave at a time, without turning project memory into a centralized service.

Decisions that cite each other across repositories — no graph database, no central index, no account. Just Markdown and Git.

Four tools that get called project memory. Three questions sort them. One table, as of September 2026.

How a simple rationale-capture skill evolved into a repository-native knowledge lifecycle without a database, daemon, or dashboard.
