# Recovery Manifests Schema Directionality Checker

> Recovery Manifests Schema Directionality Checker is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.035085/call, status unknown (last checked 2026-10-15).

Compares closed recovery-manifest field contracts to detect directionality changes between before/after schema states, narrowing ingestion modes and identifying removed retained-result or receipt-only modes.

## Facts

- Endpoint: POST https://www.mahastrategies.com/api/v1/verify/recovery-manifests/schema-directionality?utm_source=zero.xyz
- Price: $0.035085/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/recovery-manifests-schema-directionality-checker-a57fa870
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DwWvkN-VHBYCKotMkX2np

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 recovery-manifests-schema-directionality-checker-a57fa870 -d '<json body>'
```

Example prompt: Compare my recovery manifest schema before and after a field update — the before list has fields ['manifest_id','status','receipt'] with modes ['retained-result','receipt-only'], and the after list has fields ['manifest_id','status'] with modes ['receipt-only'], using dataClass 'synthetic', to check if any ingestion narrowing or mode removal breaks field contracts.

## When to prefer this

Choose this endpoint when you need to audit whether a recovery manifest schema change introduces directional breaking changes — specifically removed ingestion modes (retained-result or receipt-only) or field contract narrowing — and you are working with offline, typed, nonpersonal metadata only. It is not a semantic equivalence prover and does not auto-correct schemas, making it suitable for strict, auditable pre-deployment checks.

## Known failure modes

- Missing required 'before' array or 'beforeModes' causes validation error
- 'nonpersonalMetadata' must be explicitly set to true or request is rejected
- 'dataClass' must be either 'public' or 'synthetic'; other values cause enum validation failure
- 'after' array exceeding 32 items or 'before' array exceeding 32 items returns schema error
- Payment of 0.035085 USDC not provided via x402 protocol results in 402 Payment Required
- Providing personal metadata (nonpersonalMetadata: false) is not supported and will be rejected

## How this service works

Compare closed recovery-manifest field contracts for ingestion narrowing and removed retained-result/receipt-only modes. An advertised mode is not an observation that output is recoverable. Offline typed nonpersonal metadata only. Result retention: 24 hours; minimal receipt metadata: 90 days.

## Output

Returns a structured comparison of before/after recovery-manifest field contracts, flagging ingestion narrowing events, removed modes (retained-result or receipt-only), and directional field contract breaks. Result data is retained for 24 hours; minimal receipt metadata is kept for 90 days. No automatic correction or semantic equivalence proof is provided.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "after": {
   "type": "array",
   "maxItems": 32,
   "minItems": 0
  },
  "before": {
   "type": "array",
   "maxItems": 32,
   "minItems": 1
  },
  "dataClass": {
   "enum": [
    "public",
    "synthetic"
   ],
   "type": "string"
  },
  "afterModes": {
   "type": "array",
   "maxItems": 2,
   "minItems": 0
  },
  "beforeModes": {
   "type": "array",
   "maxItems": 2,
   "minItems": 1
  },
  "nonpersonalMetadata": {
   "type": "boolean",
   "const": true
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/recovery-manifests-schema-directionality-checker-a57fa870/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)