solutions · workloads
Model calls that survive their upstreams.
Your code calls one endpoint; behind it, an ordered chain of upstreams with fallback. An upstream outage becomes a routing decision, not a war room.
the situation
Where it hurts.
Your product calls a model on every request. When that upstream has a bad day, your product has a worse one — unless the switch to a backup is a routing change instead of an incident.
And when the invoice arrives, the spend should answer to a key, not to a mystery.
on quark
How it runs here.
Expose each model behind an alias on the gateway, backed by an ordered chain of upstreams. The gateway tries the chain in fallback order and verifies models are genuinely serving — checked from the data path, not assumed from a config entry.
Attach per-key limits, and every completion is attributed to the key that made it — so the upstream switch is silent and the spend stays legible.
pieces used
What does the work.
Every scenario maps to products that exist in the catalog — follow any piece through to its page.
Routes, ordered upstream chains, fallback, limits, and usage attribution.
Upstream credentials as sealed references, never plaintext in config.
Per-key rollups that make every completion answer for itself.
Exactly 3 products do the work — the Foundation is always on underneath.
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