# Maha Strategies Biology Protein Sequence Descriptors

> Maha Strategies Biology Protein Sequence Descriptors is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.013001/call, status unknown (last checked 2026-10-13).

Calculates composition, molecular mass, and model-based charge descriptors from a supplied protein amino acid sequence for dataset analysis.

## Facts

- Endpoint: POST https://www.mahastrategies.com/api/v1/micro/biology-protein-sequence-descriptors?utm_source=zero.xyz
- Price: $0.013001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/maha-strategies-biology-protein-sequence-descriptors-97f8a8d5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DeHp8VWzFs4yoT_FjGvYV

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 maha-strategies-biology-protein-sequence-descriptors-97f8a8d5 -d '<json body>'
```

Example prompt: Can you compute the composition, molecular mass, and charge descriptors for this protein sequence: MKTAYIAKQRQISFVKSHFSRQLEERLGLIEVQAPILSRVGDGTQDNLSGAEKAVQVKVKALPDAQFEVVHSLAKWKRQTLGQHDFSAGEGLYTHMKALRPDEDRLSPLHSVYVDQWDWERVMGDGERQFSTLKSTVEAIWAGIKATEAAVSEEFGLAPFLPDQIHFVHSQELLSRYPDLDAKGRERAIAKDLGAVFLVGIGGKLSDGHRHDVRAPDYDDWSTPSELGHAGLNGDILVWNPSVKFEGR — please treat this as public data

## When to prefer this

Choose this endpoint when you need fast, deterministic physicochemical descriptors (composition, molecular mass, charge) from a raw protein sequence string for downstream dataset analysis or ML feature engineering — not when you need 3D structure prediction, functional annotation, homology search, or folding simulation.

## Known failure modes

- Invalid or non-standard amino acid characters in sequence causing rejection
- Sequence exceeding 4000-character maximum length limit
- Missing required fields (sequence or dataClass) returning validation error
- Invalid dataClass value (not 'public' or 'synthetic') causing schema error
- Payment or x402 protocol failure preventing processing
- Empty sequence string returning computation error

## How this service works

Calculate composition, molecular mass and model-based charge descriptors from supplied protein sequences. For dataset analysis; not a folding or function prediction.

## Output

Returns a structured result object containing amino acid composition percentages, calculated molecular mass, and model-based charge descriptors derived from the input protein sequence, along with offer metadata, input/receipt digests, and versioning information.

## 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",
      "sequence"
     ],
     "properties": {
      "sequence": {
       "type": "string",
       "maxLength": 4000
      },
      "dataClass": {
       "enum": [
        "public",
        "synthetic"
       ],
       "type": "string"
      }
     },
     "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-protein-sequence-descriptors"
       ],
       "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": [
        "13001"
       ],
       "type": "string"
      }
     },
     "additionalProperties": false
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/maha-strategies-biology-protein-sequence-descriptors-97f8a8d5/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)