# Tantra Authority — Symbolic Mind eBook Purchase

> Tantra Authority — Symbolic Mind eBook Purchase is a paid API for AI agents from api.tantra-authority.com, paid per call via x402, $6.99/call, status unknown (last checked 2026-09-14).

Purchases and delivers access to 'The Symbolic Mind: Essential' eBook on tantra practices via a $6.99 USDC micropayment.

## Facts

- Endpoint: GET https://api.tantra-authority.com/api/x402/symbolic-mind-book
- Price: $6.99/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tantra-authority-symbolic-mind-ebook-purchase-9f481cce
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__FGB9z21ODFFmRxWkOm9o

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 tantra-authority-symbolic-mind-ebook-purchase-9f481cce
```

Example prompt: Can you buy me access to The Symbolic Mind: Essential ebook from Tantra Authority — it's $6.99 USDC and covers breath, movement, and attention practices from a no-mythology angle?

## When to prefer this

Use this endpoint when a user specifically wants to purchase and access 'The Symbolic Mind: Essential' ebook from Tantra Authority using USDC on Base. Prefer this over general ebook retailers when the user wants secular, body-grounded tantra education content and is comfortable with crypto micropayments via x402.

## Known failure modes

- Insufficient USDC balance — payment fails and no access URL is issued
- Payment authorization missing or malformed x402 header — returns 402 Payment Required
- Access URL may be time-limited and expire if not used promptly
- Network or blockchain congestion causing delayed transaction confirmation
- Duplicate payment attempt may not yield a new access token

## How this service works

The Symbolic Mind: Essential (eBook) — Tantra Authority

## Output

Returns a JSON object confirming the purchase with: ok (boolean success flag), the payment rail used (x402-usdc-base), the book title ('The Symbolic Mind: Essential (eBook)'), a blockchain transaction hash (txHash), and a time-limited access URL to retrieve the ebook.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "schema": {
     "type": "object"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "rail": "x402-usdc-base",
  "title": "The Symbolic Mind: Essential (eBook)",
  "txHash": "0x…",
  "accessUrl": "https://tantra-authority.com/access.html?token=…"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tantra-authority-symbolic-mind-ebook-purchase-9f481cce/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.tantra-authority.com](https://www.zero.xyz/host/api.tantra-authority.com/llms.txt)