API

Static, read-only JSON. No key. CC BY 4.0, please link back. Full spec: openapi.json.

Endpoint	Returns
`/api/vendors.json`	All vendors
`/api/vendors/{id}.json`	One vendor, e.g. api/vendors/sentry.json
`/api/changes.json`	Change log
`/api/categories.json`	Categories, best free pick, vendor ids
`/feed.json`	JSON Feed of changes
`/rss.xml`	RSS of changes

Vendor schema

Field	Type
`id`	string
`name`	string
`category`	apm \| logs \| errors \| uptime \| incident \| llm \| product
`type`	string
`free_tier`	yes \| no \| unknown
`free_plan`	string \| null
`free_tier_limits`	string \| null
`paid_from`	string
`pricing_model`	string
`card_required`	string
`oss_self_host`	string
`gotchas`	array
`confidence`	verified \| uncertain
`source_url`	string
`checked`	string \| null
`page`	string
`api`	string
`changes`	array

"not stated" = the vendor page does not state it. free_tier: unknown + confidence: uncertain = we could not confirm limits.

Example

{
 "id": "sentry",
 "name": "Sentry",
 "category": "errors",
 "type": "Error tracking / APM",
 "free_tier": "yes",
 "free_plan": "Free \"Developer\" plan",
 "free_tier_limits": "1 user; 5k errors/mo; email alerts; 10 custom dashboards",
 "paid_from": "$26/mo",
 "pricing_model": "Tiered plans + pay-as-you-go overages (e.g. +$0.50/GB logs)",
 "card_required": "not stated",
 "oss_self_host": "not stated",
 "gotchas": [
  "Pay-as-you-go required for some add-ons",
  "Single-user limit: you pay as soon as a second person needs access."
 ],
 "confidence": "verified",
 "source_url": "https://sentry.io/pricing/",
 "checked": "2026-10-24",
 "page": "https://o11y-watch.pages.dev/vendors/sentry.html",
 "api": "https://o11y-watch.pages.dev/api/vendors/sentry.json",
 "changes": []
}