# Materials Thermal Stack Resistance Calculator

> Materials Thermal Stack Resistance Calculator is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.043001/call, status unknown (last checked 2026-10-26).

Calculates one-dimensional thermal resistance for a stack of material layers and interfaces given supplied geometry, material, and interface resistance inputs.

## Facts

- Endpoint: POST https://www.mahastrategies.com/api/v1/micro/materials-thermal-stack-resistance?utm_source=zero.xyz
- Price: $0.043001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-26
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/materials-thermal-stack-resistance-calculator-20776f89
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9R_g4LgUCQfhlyMiI4ZhK

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability materials-thermal-stack-resistance-calculator-20776f89 -d '<json body>'
```

Example prompt: Calculate the 1D thermal stack resistance for a 3-layer structure — copper (2mm), TIM (0.1mm), alumina (1mm) — with two interface resistances of 1e-4 and 2e-4 m²·K/W, over an area of 0.0004 m², using public data class.

## When to prefer this

Choose this endpoint when you need a fast, deterministic, 1D conduction thermal resistance calculation for a known layer stack — e.g. during materials selection, packaging design, or quick feasibility checks. It is not suitable for convective, transient, or 3D spreading analyses, or for certified safety compliance claims. It is best when you have explicit layer geometry, material thermal conductivities, interface resistance values, and area, and want a reproducible per-call result at low cost.

## Known failure modes

- Missing required fields (dataClass, layers, interfaceResistanceM2KPerW, areaM2) returns validation error
- Layer count exceeds 32 or interface array exceeds 31 items returns schema error
- Area outside allowed range (0 to 1e12 m²) returns validation error
- Interface resistance array length does not match layers-minus-one returns computation error
- Invalid dataClass enum value returns validation error
- Payment failure returns HTTP 402 with x402 payment-required response

## How this service works

Calculate a one-dimensional layer and interface thermal-resistance scenario from supplied inputs. No hotspot, convection, transient or validated package-safety claim.

## Output

Returns a structured result object with total and per-layer thermal resistance values, boundary temperature conditions, an offer ID, version, input digest, receipt digest, and the amount charged in base units. Does not include hotspot analysis, convection effects, transient behavior, or validated package safety claims.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "dataClass",
      "layers",
      "interfaceResistanceM2KPerW",
      "areaM2"
     ],
     "properties": {
      "areaM2": {
       "type": "number",
       "maximum": 1000000000000,
       "minimum": 0
      },
      "layers": {
       "type": "array",
       "maxItems": 32,
       "minItems": 1
      },
      "dataClass": {
       "enum": [
        "public",
        "synthetic"
       ],
       "type": "string"
      },
      "interfaceResistanceM2KPerW": {
       "type": "array",
       "maxItems": 31,
       "minItems": 0
      }
     },
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "version",
      "offerId",
      "amountBaseUnits",
      "inputDigest",
      "result",
      "boundaries",
      "receiptDigest"
     ],
     "properties": {
      "result": {
       "type": "object"
      },
      "offerId": {
       "enum": [
        "materials-thermal-stack-resistance"
       ],
       "type": "string"
      },
      "version": {
       "enum": [
        "maha-microproducts/0.1"
       ],
       "type": "string"
      },
      "boundaries": {
       "type": "array",
       "maxItems": 128,
       "minItems": 0
      },
      "inputDigest": {
       "type": "string",
       "maxLength": 71
      },
      "receiptDigest": {
       "type": "string",
       "maxLength": 71
      },
      "amountBaseUnits": {
       "enum": [
        "43001"
       ],
       "type": "string"
      }
     },
     "additionalProperties": false
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/materials-thermal-stack-resistance-calculator-20776f89/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.mahastrategies.com](https://www.zero.xyz/host/www.mahastrategies.com/llms.txt)