Patterns for driving rate-limited IoT actuators from real-time producers: async debounced controller, target quantization for stability, and bottom-up progress-bar rendering.
96
96%
Does it follow best practices?
Impact
97%
1.25xAverage score across 9 eval scenarios
Passed
No known issues
{
"context": "Tests whether the agent understands the plugin's non-obvious control semantics: send-latest (not queue), stability as consecutive-tick-hold (not rate limiting), and exact-value matching that causes the quantisation trap. Specific numeric defaults are near-trivial and worth minimal points.",
"type": "weighted_checklist",
"checklist": [
{
"name": "Send-latest semantics: stale targets dropped not queued",
"description": "design_notes.md explains that during a throttle window stale targets are DROPPED/OVERWRITTEN — only the most recent value is sent when the window expires. This is send-latest semantics, NOT a FIFO queue and NOT simple rate-limiting that delays every call",
"max_score": 25
},
{
"name": "Stability filter is consecutive-tick hold NOT rate limiting",
"description": "design_notes.md explains that the stability filter requires the target to hold the SAME value for N consecutive ticks before committing. This is a conceptually different mechanism from rate limiting or simple debounce — it suppresses rapid alternation between values, not just high call frequency",
"max_score": 25
},
{
"name": "Exact value match required for stability (quantisation trap)",
"description": "Code or design_notes.md shows that the stability filter compares target == self._pending (exact equality). The new target must be IDENTICAL to the pending value to count as a consecutive tick. This is what causes the quantisation trap: float targets that drift by even 0.001 between ticks reset the stability counter",
"max_score": 25
},
{
"name": "Discrete target values not raw floats",
"description": "Targets passed to set_target() are discrete values (strings like 'focused', 'collaborative', etc. or integers) — NOT raw floats from the classifier. The target must be quantised to match device states",
"max_score": 10
},
{
"name": "Cloud min_interval default 1.2s",
"description": "The controller is instantiated with min_interval_sec=1.2 (or no override, using the 1.2s default) for the cloud API",
"max_score": 5
},
{
"name": "Stability ticks default 2",
"description": "The controller uses stability_ticks=2 (default) — target must hold for 2 consecutive ticks before committing",
"max_score": 5
},
{
"name": "Tick rate default 0.4s",
"description": "The controller uses tick_sec=0.4 (default) for the controller polling interval",
"max_score": 5
}
]
}