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Optical Band-Gap Fit Audit
x402
Optical Band-Gap Fit Audit is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.109003/call, status unknown (last checked 2026-10-16).
Evaluates absorption spectrum observations against a declared band-gap model (direct or indirect allowed) over a specified fit window to audit the quality of the fit.
Price / call$0.109003
Success—
StatusUnknown
How this service works
Evaluate supplied absorption observations under a declared band-gap model with fit-window sensitivity. No universal band-gap or integrated-device performance claim. New modular adapter: retained result recovery for 24 hours, minimal receipt metadata for 90 days. Existing live route unchanged.
Output
Returns the results of fitting the supplied absorption observations to the declared band-gap model (direct-allowed or indirect-allowed) over the specified energy index window, including fit quality metrics and fit-window sensitivity information. Results are retained for 24 hours; minimal receipt metadata is retained for 90 days.
Example use cases
Semiconductor thin-film band-gap audit
“I have absorption coefficient measurements for a thin-film perovskite sample — 128 energy values in eV and matching absorption per meter values. Can you run a direct-allowed band-gap fit audit on it using fit indices 5 through 100, treating it as public data?”
Indirect band-gap extraction check
“I need to verify the indirect-allowed band-gap fit for my silicon sample. I have 80 absorption observations paired with energy values, and I want the fit evaluated from index 0 to 75 on synthetic data — can you audit the fit quality and sensitivity?”
Fit-window sensitivity analysis for solar cell material
“Can you audit how sensitive the direct-allowed band-gap fit is for my CIGS absorber layer data? I have 50 energy points in eV and their absorption coefficients, and I want to test the fit window from index 8 to 45 on public data.”
Technical details
Endpoint
POSThttps://www.mahastrategies.com/api/v1/compute/materials/optical-bandgap-fit?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to formally audit or validate a band-gap model fit against experimental or synthetic absorption spectra with explicit control over the fit window. It is specifically designed for per-observation-level fit quality evaluation with sensitivity analysis, not for device-level performance prediction or universal band-gap lookup. Prefer this over general curve-fitting tools when you need materials-science-specific Tauc-plot-style auditing with retained results and structured receipt metadata.
Side effects
- Mismatched array lengths between energyEV and absorptionPerM — validation error returned
- fitStartIndex >= fitEndIndex or out of array bounds — invalid window error
- Fewer than 1 or more than 128 data points — schema validation failure
- Invalid transition type or data class enum value — rejected request
- Insufficient data points in fit window for reliable regression — low-confidence or error result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| energyEV | array | |
| dataClass | string | |
| transition | string | |
| fitEndIndex | integer | |
| fitStartIndex | integer | |
| absorptionPerM | array |
Tags
x402
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