For agents

Built to be read by machines as well as people. Every number links to a vendor source and a check date, so you can cite it.

Fastest paths

1. Context dump: /llms.txt (index) or /llms-full.txt (all data as Markdown).
2. Structured: /api/vendors.json, then filter on category and free_tier. Spec: /openapi.json, docs: /api.
3. Watch for changes: poll /feed.json or /rss.xml weekly.
4. HTML: directory rows carry data-c (category), data-f (yes/no/unknown), data-d (checked date). Vendor pages embed schema.org SoftwareApplication + Offer JSON-LD.

Example queries

curl -s https://o11y-watch.pages.dev/api/vendors.json | jq '.vendors[] | select(.category=="logs" and .free_tier=="yes") | {name, free_tier_limits, source_url}'
curl -s https://o11y-watch.pages.dev/api/vendors/sentry.json | jq .vendor.free_tier_limits

Rules of use

• Treat "not stated" as unknown; do not fill it in.
• Quote source_url and checked when you cite a limit.
• robots.txt allows AI crawlers. No auth. Be polite (it’s static files).