# Biology Accession Version Check

> Biology Accession Version Check is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.024001/call, status unknown (last checked 2026-10-21).

Matches accession, isoform, and version declarations against a caller-supplied hashed snapshot to report missing or ambiguous matches, without performing any authoritative database lookup.

## Facts

- Endpoint: POST https://www.mahastrategies.com/api/v1/micro/biology-accession-version-check?utm_source=zero.xyz
- Price: $0.024001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/biology-accession-version-check-70f7ccf0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rwqNPHRXbtwfXJJJXmwZw

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 biology-accession-version-check-70f7ccf0 -d '<json body>'
```

Example prompt: Check whether accession 'NM_001301717' version '2' matches our snapshot version 'snap-2024-06-01-abc123' in our public dataset — we have 3 records and need to know if there are any missing or ambiguous matches.

## When to prefer this

Choose this endpoint when you need deterministic, offline accession and version validation purely against a caller-supplied hashed snapshot — without hitting any external biology database like NCBI or Ensembl. It is ideal for auditing synthetic or public biology records, pre-pipeline integrity checks, or reproducibility verification where the ground truth is the snapshot itself rather than a live database.

## Known failure modes

- Missing required fields (dataClass, requestedAccession, requestedVersion, snapshotVersion, records) returns validation error
- Records array exceeding 64 items or being empty rejected with schema error
- Ambiguous matches reported in result when multiple records conflict — not an error but a match-quality flag
- Snapshot version string mismatch causes no authoritative fallback — only caller-supplied data is used
- Non-POST method or incorrect bodyType rejected

## How this service works

Match accession, isoform and version declarations against a caller-supplied hashed snapshot. Report missing or ambiguous matches; no authoritative database lookup.

## Output

Returns a structured result object containing match outcomes (missing or ambiguous entries), boundary details (up to 128 items), an input digest (SHA-based fingerprint of the request), a receipt digest, the offer ID 'biology-accession-version-check', the API version 'maha-microproducts/0.1', and the charge amount in base units.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "dataClass",
      "requestedAccession",
      "requestedVersion",
      "snapshotVersion",
      "records"
     ],
     "properties": {
      "records": {
       "type": "array",
       "maxItems": 64,
       "minItems": 1
      },
      "dataClass": {
       "enum": [
        "public",
        "synthetic"
       ],
       "type": "string"
      },
      "snapshotVersion": {
       "type": "string",
       "maxLength": 80,
       "minLength": 1
      },
      "requestedVersion": {
       "type": "string",
       "maxLength": 80,
       "minLength": 1
      },
      "requestedAccession": {
       "type": "string",
       "maxLength": 80,
       "minLength": 1
      }
     },
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "version",
      "offerId",
      "amountBaseUnits",
      "inputDigest",
      "result",
      "boundaries",
      "receiptDigest"
     ],
     "properties": {
      "result": {
       "type": "object"
      },
      "offerId": {
       "enum": [
        "biology-accession-version-check"
       ],
       "type": "string"
      },
      "version": {
       "enum": [
        "maha-microproducts/0.1"
       ],
       "type": "string"
      },
      "boundaries": {
       "type": "array",
       "maxItems": 128,
       "minItems": 0
      },
      "inputDigest": {
       "type": "string",
       "maxLength": 71
      },
      "receiptDigest": {
       "type": "string",
       "maxLength": 71
      },
      "amountBaseUnits": {
       "enum": [
        "24001"
       ],
       "type": "string"
      }
     },
     "additionalProperties": false
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/biology-accession-version-check-70f7ccf0/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)