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M2M Trust SPC Audit – Statistical Process Control Analysis
x402
M2M Trust SPC Audit – Statistical Process Control Analysis is a paid API for AI agents from energybilltoolkit.co.uk, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Runs a deterministic Lean Six Sigma SPC audit comparing a current value against control limits and recent historical data to flag process violations.
Price / call$0.01
Success—
StatusUnknown
How this service works
M2M Trust deterministic analysis tool: Lean Six Sigma SPC audit for a current value against control limits and recent history.
Output
Returns a deterministic SPC audit report indicating whether the current value is within control limits, which (if any) SPC rules are breached, process stability status, and signals derived from the recent measurement history.
Example use cases
Example prompt
“Run an SPC audit on my latest boiler pressure reading of 4.7 bar — my recent history is [4.5, 4.6, 4.4, 4.7, 4.5, 4.6, 4.8] and my upper control limit is 5.0, lower control limit is 4.0. Tell me if it's in control and flag any rule violations.”
Technical details
Endpoint
POSThttps://energybilltoolkit.co.uk/m2m-trust/api/tools/spc-auditWhen to prefer
Use this endpoint when you need a fast, deterministic, reproducible SPC audit for a single current value against its control limits and recent history — especially in M2M or automated quality monitoring pipelines where LLM-based analysis would be non-deterministic. Prefer over generic statistics endpoints when you specifically need Lean Six Sigma SPC rule checking (e.g. Western Electric rules, Nelson rules).
Side effects
- Missing required current value returns 400 validation error
- Insufficient history data points may result in unreliable SPC signals
- Control limits not provided or malformed returns error
- Non-numeric values in history array cause parse failure
- Values outside plausible range may return warnings
Input
{
"buffer": [
4.5,
4.6,
4.4,
4.7,
4.5,
4.6,
4.8
],
"context": "boiler_pressure_bar",
"lower_limit": 4,
"upper_limit": 5,
"current_value": 4.7
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| buffer | array | Recent historical values, oldest to newest. |
| context | string | Short domain context for interpretation. |
| lower_limit | number | Lower control/specification limit. |
| upper_limit | number | Upper control/specification limit. |
| current_value | number | Latest measured process value. |
Output
{
"status": "Optimal",
"verdict": "Value is in spec and recent history does not show obvious instability.",
"metadata": {
"sigma": 0.12454,
"context": "boiler_pressure_bar",
"checks_run": [
"bounds",
"trend",
"shift",
"z_position"
],
"z_position": 0.917663,
"center_line": 4.585714,
"same_side_shift": false,
"trend_direction": null,
"insufficient_data": false
},
"confidence": 0.67
}Tags
x402
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