DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
Agent-scoped configuration is now recognized as a distinct source type, showing "Agent config (from agent frontmatter)" in configuration source displays. This supports agent-scoped MCP servers and other per-agent customization.