# Grant Records - Revision Delta Map

> Grant Records - Revision Delta Map is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.021334/call, status unknown (last checked 2026-10-22).

Compares two revisions of a grant record and returns a structured delta of changes to owner, subject, revision, content, and scope pins by stable record ID.

## Facts

- Endpoint: POST https://www.mahastrategies.com/api/v1/intel/grant-records/revision-delta-map?utm_source=zero.xyz
- Price: $0.021334/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/grant-records-revision-delta-map-3a2938f3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__L6iT_gtQbN_dcw13Qyt2

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 grant-records-revision-delta-map-3a2938f3 -d '<json body>'
```

Example prompt: Compare these two sets of grant records — a 'before' batch and an 'after' batch (up to 32 each, public data class) — and give me a detailed delta map showing exactly what changed in owner, subject, revision, content, and scope pins for each stable record ID.

## When to prefer this

Choose this endpoint when you need a structured, field-level diff between two specific revisions of grant records (agency, opportunity, program, or jurisdiction) and require changes enumerated by stable record ID. Prefer this over generic diffing tools when working with pinned grant record schemas that include owner, subject, revision, content, and scope dimensions. Best suited for audit, compliance, and change-tracking workflows where record identity must be stable across revisions.

## Known failure modes

- Array exceeds maxItems limit of 32 — request rejected
- dataClass not one of 'public' or 'synthetic' — validation error
- nonpersonalMetadata not set to true — request rejected
- Malformed or missing pins in input records — partial or empty delta returned
- Records not matched by stable ID — no delta reported for unmatched items
- Payment not provided or insufficient USDC — 402 Payment Required

## How this service works

Enumerate owner, subject, revision, content and scope pin changes by stable record ID in two supplied revisions for agency/opportunity/program/jurisdiction/revision-pinned grant Supplied-record analysis, not independent certification. Full contract at the free describe URL.

## Output

A structured delta map keyed by stable record ID, listing changes to owner, subject, revision, content, and scope pins between the supplied 'before' and 'after' revision arrays. The response is an analysis of the supplied records only and does not constitute 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/grant-records-revision-delta-map-3a2938f3/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)