Check whether a price makes sense before you commit

You can now submit a price alongside its context and get back a verdict: reasonable, high, low, or unknown when the evidence cannot support a judgement, with the evidence behind it. The public variant of the endpoint works without an API key, so agents can sanity-check prices before signing up.

• Verdict with real reference: the endpoint compares against an actual reference price rather than a placeholder, and discloses when the supporting evidence is not independent.
• No key required for a first check: agents and prospects can call the public verify endpoint without credentials.
• Open band bounds reported correctly: a price band that is open on one side now reports that bound explicitly rather than serialising an unrepresentable value.
• Confidence and weight guardrails: attempts that produce a confidence or weight that cannot be computed are refused at the boundary rather than silently passed through.
• Unknown is a real answer: when no evidence can support a judgement, the verdict says so instead of defaulting to reasonable.
• Fallback on unusable output: a pricing function that returns a value that cannot be used is now treated as a failed attempt, so the fallback chain takes over instead of the request failing.