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Condition −40 °C +70 °C 4000 m IP66 5 yr outdoors 40 W every number carries the condition it was computed at

Trust

Projects stay yours.

We don’t train on your threads. Sources sit under every value. When the data ends, the answer ends.

No training on your work

Your threads, files and revisions are not training data. Project isolation is the default, not a tier.

A source under every number

Numeric results carry units, a source and an as‑of date. A value with no provenance does not ship.

Refusal over invention

Interpolation needs two bracketing points from the same source at the same condition. Otherwise Howard refuses.

How we treat sources

Raw downloads never feed a tool. Publication runs through a source registry, typed normalization, validation, and an atomic snapshot that tool processes read only after release.

Public climate and air properties
library / API
embedded
OEM datasheet grades, reviewed and typed
80 grades
normalized
Architecture pattern cards
first‑party
reviewed
MatWeb, CAMPUS, Granta
cite only
never embedded
Human‑only and prohibited‑bulk sources
excluded
registry

Citation‑only sources are looked up, not ingested. That boundary is enforced in the pipeline, not promised in a policy page.

Howard is decision support.

It does not certify, approve, or release a design — and it is not a PE license or a test lab. You stamp. You test. You make the call.