SOLO · BUILDER OFF←2 / 2Exit

Schema drift under malformed inputs

http 500: 8.4%

This workspace is built for a wide screen. Everything works here, but the editor and the bench stack instead of sitting side by side.

README.mdmarkdown

New mobile client rollout.

8.4% of requests now return internal errors.

Model service itself remains healthy.

Objective

Strengthen the API contract so malformed inputs are rejected before feature preprocessing.

Requirements

Required model features must be rejected when absent; counts cannot be negative; amount must be positive; valid payload behavior must remain unchanged; do not silently invent missing values.

Readings

request success: 91.6%
http 500: 8.4%
model service: healthy
model version: fraud-v17

Solo training

This one is yours alone.

The Builder agent is switched off by design. This mission verifies that you can reason about an API contract without delegating the implementation.