# Evidence Frame Compatibility Checker

> Evidence Frame Compatibility Checker is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.0105/call, status unknown (last checked 2026-09-14).

Validates up to ten claim-evidence pair relationships against a versioned rule set, reporting unsupported frame transfers and missing information without interpreting prose or certifying truth.

## Facts

- Endpoint: POST https://www.mahastrategies.com/api/v1/micro/evidence-frame-compatibility
- Price: $0.0105/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/evidence-frame-compatibility-checker-ab843592
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pD94tyXzgkMukt-6QgJpJ

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 evidence-frame-compatibility-checker-ab843592 -d '<json body>'
```

Example prompt: Check these eight claim-evidence pairs using the 'public' data class — I need to know which ones have unsupported frame transfers or missing information according to the versioned rule set.

## When to prefer this

Choose this endpoint when you need deterministic, rule-based compatibility checking of structured claim-evidence relationships — especially when you want auditable receipts, versioned rule application, and explicit reporting of frame transfer violations rather than probabilistic or LLM-based judgment. Prefer it over general-purpose reasoning endpoints when you need reproducible results against a pinned rule set and do not require prose interpretation or external source verification.

## Known failure modes

- Submitting more than 10 pairs returns a validation error
- Invalid dataClass enum value (must be 'public' or 'synthetic') causes rejection
- Malformed pair structure results in schema validation failure
- Unknown claim-evidence combinations are returned as 'unresolved' rather than errors
- Payment failure via x402 prevents the check from being executed
- Missing required 'pairs' or 'dataClass' fields causes a 400-level error

## How this service works

Check up to ten declared claim-evidence relationships against a finite, versioned rule set. Reports unsupported frame transfers and missing information. Unknown combinations remain unresolved. No prose interpretation, source inspection or truth certification.

## Output

Returns a versioned result object containing: a compatibility result for each submitted pair (supported, unsupported, or unresolved), an array of boundary violations (up to 128 entries), flagged unsupported frame transfers, missing information indicators, an input digest, a receipt digest, the offer ID ('evidence-frame-compatibility'), and the amount charged in base units (10500). Unknown combinations are reported as unresolved rather than failing hard.

## 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",
      "pairs"
     ],
     "properties": {
      "pairs": {
       "type": "array",
       "maxItems": 10,
       "minItems": 1
      },
      "dataClass": {
       "enum": [
        "public",
        "synthetic"
       ],
       "type": "string"
      }
     },
     "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": [
        "evidence-frame-compatibility"
       ],
       "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": [
        "10500"
       ],
       "type": "string"
      }
     },
     "additionalProperties": false
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/evidence-frame-compatibility-checker-ab843592/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)