# Catalyst Measurements Revision Delta Map

> Catalyst Measurements Revision Delta Map is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.021318/call, status unknown (last checked 2026-10-20).

Enumerates owner, subject, revision, content, and scope pin changes between two supplied revisions of a public material-lot/method-pinned catalyst measurement record by stable record ID.

## Facts

- Endpoint: POST https://www.mahastrategies.com/api/v1/compute/catalyst-measurements/revision-delta-map?utm_source=zero.xyz
- Price: $0.021318/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/catalyst-measurements-revision-delta-map-e3375801
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XZkfSzZFsCg-NMxcoNfEc

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 catalyst-measurements-revision-delta-map-e3375801 -d '<json body>'
```

Example prompt: Compare these two sets of catalyst measurement records — the before snapshot has records [A1, B2] and the after snapshot has [A1v2, B2v3] — and tell me what changed in owner, subject, content, and scope pins across both revisions using public data only.

## When to prefer this

Use this endpoint when you need to programmatically diff two specific snapshots of public or synthetic catalyst measurement records by stable ID and require a structured enumeration of owner, subject, revision, content, and scope pin changes. Prefer this over general-purpose diff tools when working within the material-lot/method-pinned catalyst measurement domain and needing audit-grade field-level change tracking.

## Known failure modes

- Mismatch between before/after array lengths may produce incomplete delta maps
- Records not found by stable ID will be omitted or flagged as missing
- Invalid dataClass enum value returns a validation error
- nonpersonalMetadata not set to true (const) causes rejection
- Arrays exceeding 32 items are rejected with a size error
- Synthetic records submitted as public or vice versa may yield inaccurate deltas

## How this service works

Enumerate owner, subject, revision, content and scope pin changes by stable record ID in two supplied revisions for public material-lot/method-pinned catalyst measurement Supplied-record analysis, not independent certification. Full contract at the free describe URL.

## Output

Returns a structured delta map enumerating field-level changes (owner, subject, revision, content, and scope pin) between the before and after arrays of catalyst measurement records, keyed by stable record ID. Covers only supplied records; this is a record analysis, not independent certification.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/catalyst-measurements-revision-delta-map-e3375801/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)