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.
The SendUserFile tool description now includes a concrete example: Example: SendUserFile({ files: ["report.md"], caption: "Here's the report.", status: "normal" })
Evidence
Updated R5r string — search for "Example: SendUserFile({ files:"
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
