RQM Trajectory Instability Diagnosis

Use this endpoint when you have a bounded, ordered, timestamped sequence of 3D positions and need to programmatically detect instability — oscillation, divergence, or kinematic limit violations — against your own defined thresholds. Prefer this over generic validation endpoints when you need trajectory-specific diagnostics (direction reversals, step distance, speed and acceleration analysis) rather than just schema or limit checking. Not suitable for physical safety certification, causal fault attribution, or unmodeled dynamics.

• Fewer than 3 samples provided — minimum sample count not met
• Timestamps out of order or non-monotonic — samples must be ordered by timestamp
• Unknown or unsupported length_unit value
• Threshold values at or below zero — all rule thresholds must be strictly positive
• maximum_direction_reversals exceeds 10000 — out of allowed range
• frame_id missing or exceeds 64 characters
• More than 10000 samples submitted — exceeds maximum payload size
• Malformed position array — each sample must have exactly 3 numeric coordinates