# Tantra Authority — Starter Library Bundle (8 eBooks)

> Tantra Authority — Starter Library Bundle (8 eBooks) is a paid API for AI agents from api.tantra-authority.com, paid per call via x402, $49/call, status unknown (last checked 2026-09-14).

Purchases and delivers access to a bundle of 8 tantra education eBooks via a $49 USDC micropayment, returning a tokenized access URL.

## Facts

- Endpoint: GET https://api.tantra-authority.com/api/x402/bundle-starter-library
- Price: $49/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-starter-library-bundle-8-ebooks-d45afc1c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FyWhu8n6f0ev3lfNumoej

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-starter-library-bundle-8-ebooks-d45afc1c
```

Example prompt: Can you buy me the Tantra Authority Starter Library bundle — all 8 eBooks — for $49 USDC and send me the access link?

## When to prefer this

Use this endpoint when a user explicitly wants to purchase the full 8-eBook Tantra Authority Starter Library bundle in one transaction using USDC on Base. Prefer this over individual eBook endpoints when the user wants comprehensive access to the full starter collection at a bundled price.

## Known failure modes

- Insufficient USDC balance causes payment failure and no access URL is returned
- Invalid or expired payment token results in 402 or 401 error
- Network error on Base chain causes transaction hash to be unavailable
- Access URL token may expire if not used promptly
- Duplicate calls are not idempotent — each call triggers a new $49 charge

## How this service works

Tantra without the mythology. A clean, body-grounded education in what tantra actually is — the breath, sound, movement, touch, and attention practices that produce documented results, stripped of the marketing.

## Output

Returns a JSON object confirming success (ok: true), the payment rail used (x402-usdc-base), the bundle title ('The Starter Library — all 8 eBooks'), a blockchain transaction hash, and a tokenized access URL pointing to the downloadable content.

## 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 Starter Library — all 8 eBooks (bundle)",
  "txHash": "0x…",
  "accessUrl": "https://tantra-authority.com/access.html?token=…"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tantra-authority-starter-library-bundle-8-ebooks-d45afc1c/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)