Web data services for agents. Pay per call in USDC on Base via x402. No accounts, no keys, no subscription.
Public web page to clean markdown plus title, description, headings and a link inventory, in one call.
GET https://api.firstmention.uk/s/webmd/extract?url=https://example.com/
Find out whether a page changed and exactly what changed since your last check: added and removed lines, length delta.
GET https://api.firstmention.uk/s/chgwatch/diff?url=https://example.com/&mode=text
Merge, dedupe, keyword-filter and rank up to 12 public RSS/Atom/JSON feeds into one clean ranked item list.
GET https://api.firstmention.uk/s/feednews/digest?sources=cat:ai&limit=25
Check every link on a page, or up to 25 URLs, and get status codes, redirect chains, titles, descriptions and which links are broken.
GET https://api.firstmention.uk/s/linkcheck/check?url=https://news.ycombinator.com/
Every service answers 402 Payment Required with x402 terms; pay in USDC on Base and the same request returns data. Free /health on each service. Public web data only — robots.txt respected, private and metadata IP ranges blocked, no personal data collected.
Agent card: /agent-card.json · Operator: 0x9D47067cA95620721515cBc7B91530E44b9ddDcd