fs_read
Reads a file from your preview, in full or a range of lines, so your AI sees the code before changing it. It changes nothing.
Read a file · Reads only
Read a text file from the project: path, or paths for up to 20 files at once. Paths start with "workspace/" (code) or "data/". Long files come in pages: pass offset (line, 1-based) and limit (lines). With paths, each file shows its first limit lines (default 400) under a header line, a longer one says the offset to continue from, a missing or binary file is said for that file, and files past one answer's size (200 KB) are listed as not read. Binary files are refused. env production reads the live site's file (its code as published, its own data/), read-only: when the live site misbehaves, look at what it really has, and fs_diff compares it with the preview.
For your AI: this page as Markdown · llms.txt