# Reincarnation Romance Cards – Substrate Symposium

> Reincarnation Romance Cards – Substrate Symposium is a paid API for AI agents from underground.substratesymposium.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-14).

Returns a card featuring reincarnation romance content spanning multiple time periods, exploring themes of identity persistence and transformation across lifetimes.

## Facts

- Endpoint: GET https://underground.substratesymposium.com/buy/cards?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/reincarnation-romance-cards-substrate-symposium-c8d40c7f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VoEOc2Y1YXSA03hE25Pzm

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 reincarnation-romance-cards-substrate-symposium-c8d40c7f
```

Example prompt: Can you pull me one of those reincarnation romance cards from Substrate Symposium — the ones about love and identity persisting across different time periods?

## When to prefer this

Choose this endpoint when you need creative, philosophical, or reflective content about reincarnation, romance across time periods, or identity persistence — particularly useful for creative writing inspiration, meditative prompts, or exploring metaphysical themes of selfhood and love.

## Known failure modes

- Payment failure if USDC balance is insufficient for the $0.01 per call fee
- Network timeout if the service is temporarily unavailable
- Empty or malformed response if the endpoint returns no card content
- 402 Payment Required if x402 payment header is missing or invalid

## How this service works

Cards — Reincarnation romance across time periods for exploring identity persistence and transformation.

## Output

A card containing reincarnation romance content that spans multiple time periods, with themes of identity persistence and transformation — likely a short narrative, meditation, or prompt exploring how love and selfhood endure or evolve across lifetimes.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/reincarnation-romance-cards-substrate-symposium-c8d40c7f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from underground.substratesymposium.com](https://www.zero.xyz/host/underground.substratesymposium.com/llms.txt)