# Telescope Calibrations Revision Delta Map

> Telescope Calibrations Revision Delta Map is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.02133/call, status unknown (last checked 2026-10-20).

Compares two revisions of telescope calibration records and returns a structured delta map of owner, subject, revision, content, and scope pin changes by stable record ID.

## Facts

- Endpoint: POST https://www.mahastrategies.com/api/v1/celestial/telescope-calibrations/revision-delta-map?utm_source=zero.xyz
- Price: $0.02133/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/telescope-calibrations-revision-delta-map-500aec2d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dwuiM-3J-POUPN-b9A379

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 telescope-calibrations-revision-delta-map-500aec2d -d '<json body>'
```

Example prompt: Compare my two sets of telescope calibration records — the before list has up to 32 entries and the after list has the updated versions — and give me a delta map showing what changed in owner, subject, content pins, and scope pins for each stable record ID, using public data class.

## When to prefer this

Use this endpoint when you need a precise, field-level delta between two known revisions of telescope calibration records identified by stable record IDs, particularly for instrument/detector/filter/binning/readout/pipeline-pinned calibrations. Prefer this over generic diff tools when working with structured astronomical calibration metadata where scope and content pin changes must be tracked separately from identity changes.

## Known failure modes

- Before or after arrays exceed 32 items — request rejected
- Invalid dataClass value (must be 'public' or 'synthetic') — validation error
- nonpersonalMetadata not set to true — request rejected
- Malformed record entries in before/after arrays — parsing error
- Empty arrays on both sides — empty delta returned
- Network or payment authorization failure — 402 or 5xx error

## How this service works

Enumerate owner, subject, revision, content and scope pin changes by stable record ID in two supplied revisions for instrument/detector/filter/binning/readout/pipeline-pinned calibration Supplied-record analysis, not independent certification. Full contract at the free describe URL.

## Output

Returns a structured delta map keyed by stable calibration record ID, enumerating field-level changes (owner, subject, revision, content pin, scope pin) between the supplied before and after record arrays. Does not independently certify calibrations — analysis is limited to the supplied records.

## 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/telescope-calibrations-revision-delta-map-500aec2d/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)