Free Stack Ledger

Quota Matrix

Provider	Primitive	Free Tier	Reset	Console	API	Quota Check	Status	Notes
GitHub Actions	Compute	2k–3k min/mo	monthly	github.com	REST	billing	track	Use cache + short jobs
GitHub Pages	Static hosting	Free	n/a	repo settings	docs	billing	stable	Use for public surfaces
Cloudflare Workers	Edge compute	100k req/day	daily	dashboard	API	usage	track	Use as gateway/auth
Cloudflare Pages	Static hosting	Free	n/a	dashboard	API	usage	stable	Preview builds
Cloudflare R2	Object storage	10GB + free egress	monthly	dashboard	API	usage	track	Artifacts + datasets
Supabase	Postgres	500MB + free auth	monthly	console	API	billing	track	Use for SQL surfaces
Fly.io	VMs	3 shared VMs	monthly	dashboard	API	usage	track	Stateful services
Hugging Face	Model storage	Free repos	n/a	hub	API	billing	stable	Model artifacts
Vercel	Edge + hosting	Hobby tier	monthly	dashboard	API	usage	track	Frontend previews
Netlify	Static hosting	Starter tier	monthly	dashboard	API	usage	track	Static + previews
Render	Compute	Free web services	monthly	dashboard	API	usage	track	Background tasks
Railway	Compute	Free credits	monthly	dashboard	API	usage	track	Compute fallback
Neon	Postgres	Free DB	monthly	console	API	usage	track	SQL fallback
Turso	SQLite edge	Free DB	monthly	console	API	usage	track	Edge SQL
Upstash	Redis/Queue	Free requests	monthly	console	API	usage	track	Queue + cache
Firebase	Auth/DB	Spark tier	monthly	console	API	usage	track	Auth fallback
Deno Deploy	Edge compute	Free tier	monthly	dashboard	docs	usage	track	Edge fallback
Cloudflare D1	SQL edge	Free tier	monthly	dashboard	docs	usage	track	Edge SQL layer
Cloudflare KV	KV store	Free tier	monthly	dashboard	docs	usage	track	Edge config
Oracle Cloud	VMs	Always free	monthly	console	API	usage	track	VM reserve
GCP Free Tier	Compute/Storage	Monthly credits	monthly	console	APIs	billing	track	Secondary cloud
Azure Free	Compute/Storage	Monthly credits	monthly	portal	APIs	billing	track	Secondary cloud
Cloudflare Queues	Queues	Free tier	monthly	dashboard	docs	usage	track	Async buffer
Cloudflare Durable Objects	Stateful edge	Free tier	monthly	dashboard	docs	usage	track	Consistency layer
Supabase Edge Functions	Edge compute	Free tier	monthly	console	docs	billing	track	Edge fallback
Fly Machines	Compute	Free tier	monthly	dashboard	docs	usage	track	Compute pool
Railway Cron	Scheduled jobs	Free credits	monthly	dashboard	docs	usage	track	Job schedule
Wasmer Edge	Edge compute	Free tier	monthly	console	docs	usage	track	Edge fallback
Koyeb	Compute	Free services	monthly	dashboard	docs	usage	track	Compute fallback
Zeabur	Compute	Free credits	monthly	dashboard	docs	usage	track	Compute fallback
Northflank	Compute	Free tier	monthly	dashboard	docs	usage	track	Compute fallback
Uptime Kuma	Health checks	Self-hosted	n/a	repo	docs	setup	note	Self-hosted monitor

Live Map (Compose → Deploy → Observe)

Interactive view of pipeline stages. Toggle a stage to simulate failover and budget pressure.

Compose

Registryhealthy

Artifactshealthy

Secretshealthy

Deploy

Statichealthy

Edgehealthy

DNShealthy

Observe

Healthhealthy

Budgethealthy

Alertshealthy

Compose

Registry + artifacts + secrets.

plates hub workbench architecture

Deploy

Static + edge + DNS pools.

deploy status commands dues gate

Observe

Health + budget + trace.

ledger trace observatory metaculus scrape

Last deploy: unknown · Last check: unknown

Registry View (Provider-Agnostic)

Rendered from a simple registry manifest so the UI stays provider-agnostic.

Diversify

Always maintain 2+ providers per primitive.
Keep a hot path for each (Actions + Workers + Fly).
Document failover and quotas.

Live Demo

Adjust usage to see threshold alerts. This is a local demo that models quota drift.

Provider: GitHub Actions

Quota: 3000 min/mo

Usage: 0

Status: track

Thresholds: 70% warn · 90% critical

Failover Architecture (DNS + L7)

Providers are abstracted behind capability contracts. DNS handles coarse failover; L7 routing handles per-route steering and retries.

DNS pool (coarse)
clients → primary DNS answer → edge A → static/API
    ↳ if unhealthy or over-budget → DNS promotes edge B/C

L7 pool (fine)
edge router → /static/** → cf-pages → gh-pages → netlify
    → /api/** → cf-workers → netlify-edge → vercel-edge
    → /assets/** → r2 → gh-releases → b2

Policies: health-first routing, single retry on 5xx/timeout, budget-aware shift at 70%/90% quota.

Provider Pools (3+ per Layer)

Layer	Primary	Secondary	Tertiary	Quaternary
DNS	Cloudflare	HE DNS	Porkbun	Dynu
Edge / L7	Cloudflare Workers	Netlify Edge	Vercel Edge	Fastly Edge
Static	Cloudflare Pages	GitHub Pages	Netlify	Vercel
Object	Cloudflare R2	GitHub Releases	Backblaze B2	Supabase Storage
CI / Build	GitHub Actions	GitLab CI	CircleCI	SourceHut
Health	UptimeRobot	Better Stack	Grafana Cloud	Sentry

Provider-Abstraction Contract

service-registry.yaml
services:
  plates:
    route: /plates/**
    capability: static
    dns_pool: [cf-dns, he-dns, porkbun-dns, dynu-dns]
    l7_pool: [cf-pages, gh-pages, netlify, vercel]
  api:
    route: /api/**
    capability: edge
    dns_pool: [cf-dns, he-dns, porkbun-dns, dynu-dns]
    l7_pool: [cf-workers, netlify-edge, vercel-edge, fastly-edge]

Adapters implement: provision, status, route, budget. Failover is driven by health checks and quota thresholds.

Policies

Weekly quota review
Budget alarms before 80%
Fallback surfaces for overruns

Next Actions

Fill actual usage values
Add provider alerts
Track API rate limits