# Protein Measurements Revision Delta Map

> Protein Measurements Revision Delta Map is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.021314/call, status unknown (last checked 2026-10-20).

Compares two revisions of protein/isoform/sequence-pinned measurement records to enumerate changes in owner, subject, revision, content, and scope pins by stable record ID.

## Facts

- Endpoint: POST https://www.mahastrategies.com/api/v1/compute/protein-measurements/revision-delta-map?utm_source=zero.xyz
- Price: $0.021314/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/protein-measurements-revision-delta-map-18f18731
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_m74M7Gl9Urtdg5vRxorSW

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 protein-measurements-revision-delta-map-18f18731 -d '<json body>'
```

Example prompt: Compare these two sets of protein measurement records — up to 32 entries each — and tell me what changed between the before and after revisions, covering owner, subject, content, and scope pin differences, using public data class.

## When to prefer this

Use this endpoint when you need a structured, field-level diff between two specific revisions of protein, isoform, or sequence-pinned measurement records and require enumeration of owner, subject, content, and scope pin changes by stable record ID. It is a supplied-record analysis tool, not an independent certification service, so it is best suited for auditing pipeline outputs, validating dataset updates, or tracking record drift across snapshots.

## Known failure modes

- Array exceeds maxItems of 32 — request rejected
- dataClass not one of 'public' or 'synthetic' — validation error
- nonpersonalMetadata not set to true — request rejected
- Malformed record entries in before/after arrays — parsing error
- Payment not supplied or insufficient USDC — x402 payment required error

## How this service works

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

## Output

A delta map keyed by stable record ID showing enumerated changes across owner, subject, revision, content, and scope pin fields between the supplied before and after record arrays, scoped to the declared dataClass.

## 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/protein-measurements-revision-delta-map-18f18731/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)