# Publication Records - Revision Delta Map

> Publication Records - Revision Delta Map is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.021332/call, status unknown (last checked 2026-11-04).

Compares two sets of publication record snapshots (before/after) to enumerate owner, subject, revision, content, and scope pin changes by stable record ID

## Facts

- Endpoint: POST https://www.mahastrategies.com/api/v1/intel/publication-records/revision-delta-map?utm_source=zero.xyz
- Price: $0.021332/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-04
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/publication-records-revision-delta-map-aef2e852
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eHMaGEeiBGBt49qnTs9oQ

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 publication-records-revision-delta-map-aef2e852 -d '<json body>'
```

Example prompt: Compare these two snapshots of our publication records — the before list and after list — using public data class, and tell me which record IDs had changes to their owner, subject, revision, content, or scope pins between the two revisions.

## When to prefer this

Use this endpoint when you need a structured field-level diff of publication records (owner, subject, revision, content, scope) between two discrete snapshots identified by stable record IDs, particularly for bibliographic, DOI-pinned, or publisher/edition-scoped records. Prefer this over general diff tools when working with the mahastrategies publication record schema and when you need per-field change enumeration rather than raw text diffs.

## Known failure modes

- Before or after array exceeds 32 items — returns validation error
- nonpersonalMetadata not set to true — required constant, returns error if omitted or false
- Invalid dataClass value outside 'public' or 'synthetic' enum — returns validation error
- Empty before and after arrays — may return empty delta with no changes
- Malformed record objects in the arrays — may cause parsing errors or partial results

## How this service works

Enumerate owner, subject, revision, content and scope pin changes by stable record ID in two supplied revisions for publisher/work/DOI/edition-pinned bibliographic Supplied-record analysis, not independent certification. Full contract at the free describe URL.

## Output

A delta map keyed by stable record ID listing which fields changed (owner, subject, revision, content, scope pin) between the before and after record sets. This is a supplied-record analysis, not independent certification — results reflect only the records provided, not an authoritative external source.

## 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/publication-records-revision-delta-map-aef2e852/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)