# CABEZON Buyer-Brief Pack

> CABEZON Buyer-Brief Pack is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $20/call, status unknown (last checked 2026-10-11).

Delivers a versioned, inspectable buyer-brief archive for the CABEZON acceptance exercise, including approval-change checks, omission checks, incident/recovery runbooks, and dated public-source snapshots.

## Facts

- Endpoint: POST https://www.mahastrategies.com/api/v1/cabezon/buyer-brief?utm_source=zero.xyz
- Price: $20/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cabezon-buyer-brief-pack-7b66ed92
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iDdAhgJlT51FauhCJenw9

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 cabezon-buyer-brief-pack-7b66ed92 -d '<json body>'
```

Example prompt: Generate a CABEZON buyer-brief pack for my acceptance review using bundle hash 'abc123def456', my recovery secret 'mysecret42', and client request ID 'req-2024-001' — I need the full archive with approval-change checks and the incident runbook delivered inline.

## When to prefer this

Use this endpoint when a buyer needs a versioned, structured acceptance briefing pack for the CABEZON exercise, specifically requiring approval-change checks, omission checks, an incident/recovery runbook, and dated public-source snapshots, all delivered as a single inspectable archive. Prefer this over generic document delivery APIs when the CABEZON product schema, version binding, and secret-bound recovery workflow are required.

## Known failure modes

- Missing or incorrect termsHash causes rejection — must match sha256:be78c3b480493b4d4347e9417644cbd8c4f84fdafd844fa4123b6e2fc8a0d122
- Invalid or missing recoverySecret prevents archive decryption or delivery
- bundleHash not recognized or not on file results in a 404 or validation error
- version not set to '2.0.0' fails schema const validation
- clientRequestId missing causes request rejection
- Payment not completed (x402) results in 402 Payment Required
- Terms not agreed or deployment not verified blocks activation

## How this service works

Prepared CABEZON Buyer-Brief Pack: new CABEZON acceptance exercise, approval-change and omission checks, incident/recovery runbook, dated public-source snapshots and acceptance report. Assisted seller-authored pilot for one service; not independent endorsement. Version-bound archive delivery with secret-bound recovery without repayment. Activation requires agreed terms and verified deployment.

## Output

Returns a base64-encoded inline archive (productId: cabezon-buyer-brief-pack, version 2.0.0) containing the acceptance exercise report, approval-change and omission checks, incident/recovery runbook, and dated public-source snapshots, along with an orderId, transaction reference, delivery type (inline_base64_archive), and acceptance status (buyer_review_required).

## 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": [
      "clientRequestId",
      "version",
      "bundleHash",
      "termsHash",
      "recoverySecret"
     ],
     "properties": {
      "version": {
       "const": "2.0.0"
      },
      "termsHash": {
       "const": "sha256:be78c3b480493b4d4347e9417644cbd8c4f84fdafd844fa4123b6e2fc8a0d122"
      },
      "bundleHash": {
       "type": "string"
      },
      "recoverySecret": {
       "type": "string"
      },
      "clientRequestId": {
       "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": [
      "productId",
      "version",
      "delivery",
      "archive",
      "orderId",
      "transaction",
      "acceptance"
     ],
     "properties": {
      "archive": {
       "type": "object"
      },
      "orderId": {
       "type": "string"
      },
      "version": {
       "const": "2.0.0"
      },
      "delivery": {
       "const": "inline_base64_archive"
      },
      "productId": {
       "const": "cabezon-buyer-brief-pack"
      },
      "acceptance": {
       "const": "buyer_review_required"
      },
      "transaction": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cabezon-buyer-brief-pack-7b66ed92/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)