Tag

#documentation

3 posts tagged.

Claude's token-efficient tools header has no page left to check (2026)

Anthropic tells you to remove token-efficient-tools-2025-02-19 because it has no effect. The page that defined it now 307s to a migration guide index that mentions neither the feature nor beta headers. Measured October 2026: 0 occurrences across a 760-URL documentation index, and the whole surviving description is one sentence on one of four model migration guides.

October 11, 202612 min read137

Claude's PDF page limit keys off a number you cannot see

The PDF support page states its page ceiling with a condition you cannot evaluate from that page. Three other statements of the same limit key it off the model instead. Measured on October 9, 2026, plus the arithmetic that makes 600 unreachable on a dense document.

October 9, 202613 min read219

AI dev workflow

llms.txt in 2026: I measured who actually reads it

Eleven of fifteen documentation sites serve a real llms.txt. Zero of the five major AI crawler operators document reading yours. Measured on 8 September 2026 with a plain HTTP client, including the commands, plus the one part of the file that does pay off.

September 8, 20269 min read207