llms.txt

What it is

/llms.txt is the site's machine-readable index for agents: the allowed dataset ids, the not_available list (data deliberately not offered), the usage rules, and links to the OpenAPI spec.

curl "https://twmarketdata.com/llms.txt"

The two files

• /llms.txt — the compact index (dataset ids, rules, not_available, OpenAPI links).
• /llms-full.txt — the full bundle: every guide + endpoint page + coverage.
• Both live at the domain root (they are not localized); a /zh-TW/llms.txt request redirects to the root.

How an agent uses it

• Fetch it once at the start, then work only from the dataset ids it lists — do not guess ids.
• Treat not_available as authoritative: if data is listed there, tell the user it is intentionally not offered rather than inventing it.